New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2023 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: at24c.c |
| | | * Description: This file is AT24Cxx EEPROM code |
| | | * |
| | | * Version: 1.0.0(10/08/23) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "10/08/23 17:52:00" |
| | | * |
| | | * Pin connection: |
| | | * AT24Cxx Raspberry Pi 40Pin |
| | | * VCC <-----> #Pin1(3.3V) |
| | | * SDA <-----> #Pin3(SDA, BCM GPIO2) |
| | | * SCL <-----> #Pin5(SCL, BCM GPIO3) |
| | | * GND <-----> GND |
| | | * |
| | | * /boot/config.txt: |
| | | * dtoverlay=i2c1,pins_2_3 |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <stdint.h> |
| | | #include <string.h> |
| | | #include <unistd.h> |
| | | #include <libgen.h> |
| | | #include <getopt.h> |
| | | #include <time.h> |
| | | #include <errno.h> |
| | | #include <fcntl.h> |
| | | #include <sys/ioctl.h> |
| | | #include <sys/types.h> |
| | | #include <sys/stat.h> |
| | | #include <linux/types.h> |
| | | #include <linux/i2c.h> |
| | | #include <linux/i2c-dev.h> |
| | | |
| | | /*+----------------------+ |
| | | *| EEPROM Information | |
| | | *+----------------------+*/ |
| | | |
| | | /* AT24Cxx 7-bit I2C slave address */ |
| | | #define AT24C_CHIPADDR 0x50 |
| | | |
| | | enum |
| | | { |
| | | AT24C01 = 1, |
| | | AT24C02 = 2, |
| | | AT24C04 = 4, |
| | | AT24C08 = 8, |
| | | AT24C16 = 16, |
| | | AT24C32 = 32, |
| | | AT24C64 = 64, |
| | | AT24C128 = 128, |
| | | AT24C256 = 256, |
| | | AT24C512 = 512, |
| | | } chipid_t; |
| | | |
| | | typedef struct i2c_s |
| | | { |
| | | char *dev; /* I2C master device, /dev/i2c-N */ |
| | | int addr; /* 7-bits slave address */ |
| | | int fd; /* File description */ |
| | | } i2c_t; |
| | | |
| | | typedef struct eeprom_s |
| | | { |
| | | int chip; /* Chip ID */ |
| | | uint32_t capacity; /* Chip size in bytes */ |
| | | int pagesize; /* Page size in bytes */ |
| | | } eeprom_t; |
| | | |
| | | #define EEP_INFO(_chip, _capacity, _pagesize) \ |
| | | .chip = _chip, \ |
| | | .capacity = _capacity, \ |
| | | .pagesize = _pagesize, \ |
| | | |
| | | static eeprom_t at24c_ids[] = { |
| | | { EEP_INFO(AT24C01, 128, 8) }, |
| | | { EEP_INFO(AT24C02, 256, 8) }, |
| | | { EEP_INFO(AT24C04, 512, 16) }, |
| | | { EEP_INFO(AT24C08, 1024, 16) }, |
| | | { EEP_INFO(AT24C16, 2048, 16) }, |
| | | { EEP_INFO(AT24C32, 4096, 32) }, |
| | | { EEP_INFO(AT24C64, 8192, 32) }, |
| | | { EEP_INFO(AT24C128, 16384, 64) }, |
| | | { EEP_INFO(AT24C256, 32768, 64) }, |
| | | { EEP_INFO(AT24C512, 65536, 128) }, |
| | | }; |
| | | |
| | | typedef struct at24c_s |
| | | { |
| | | i2c_t i2c; |
| | | eeprom_t *eeprom; |
| | | } at24c_t; |
| | | |
| | | int at24c_init(at24c_t *at24c, int chip); |
| | | int at24c_read(at24c_t *at24c, int offset, uint8_t *buf, int size); |
| | | int at24c_write(at24c_t *at24c, int offset, uint8_t *data, int len); |
| | | int at24c_test(at24c_t *at24c); |
| | | |
| | | int i2c_init(i2c_t *i2c, char *i2cdev, int addr); |
| | | int i2c_write(i2c_t *i2c, uint8_t *data, int len); |
| | | int i2c_read(i2c_t *i2c, uint8_t *buf, int size); |
| | | void i2c_term(i2c_t *i2c); |
| | | |
| | | static inline void msleep(unsigned long ms); |
| | | void dump_buf(const char *prompt, char *buf, size_t len); |
| | | |
| | | static inline void banner(const char *progname) |
| | | { |
| | | printf("%s program Version v1.0.0\n", progname); |
| | | printf("Copyright (C) 2023 Avnet.\n"); |
| | | } |
| | | |
| | | static void program_usage(const char *progname) |
| | | { |
| | | printf("Usage: %s [OPTION]...\n", progname); |
| | | printf(" %s is AT24Cxx EEPROM test program. \n", progname); |
| | | |
| | | printf(" -c[chipid ] Specify EEPROM chipID: 1,2,4,8...512 \n"); |
| | | printf(" -d[device ] Specify I2C device, such as /dev/i2c-1\n"); |
| | | printf(" -h[help ] Display this help information\n"); |
| | | printf(" -v[version ] Display the program version\n"); |
| | | |
| | | printf("\n"); |
| | | banner(progname); |
| | | return; |
| | | } |
| | | |
| | | int main(int argc, char **argv) |
| | | { |
| | | char *progname=NULL; |
| | | char *dev="/dev/i2c-1"; |
| | | int chipid = AT24C256; /* default */ |
| | | at24c_t at24c; |
| | | int rv; |
| | | |
| | | struct option long_options[] = { |
| | | {"chip", required_argument, NULL, 'c'}, |
| | | {"device", required_argument, NULL, 'd'}, |
| | | {"version", no_argument, NULL, 'v'}, |
| | | {"help", no_argument, NULL, 'h'}, |
| | | {NULL, 0, NULL, 0} |
| | | }; |
| | | |
| | | progname = basename(argv[0]); |
| | | |
| | | /* Parser the command line parameters */ |
| | | while ((rv = getopt_long(argc, argv, "c:d:vh", long_options, NULL)) != -1) |
| | | { |
| | | switch (rv) |
| | | { |
| | | case 'c': /* Set chip ID: 1,2,4,8...512 */ |
| | | chipid = atoi(optarg); |
| | | break; |
| | | |
| | | case 'd': /* Set I2C device path: /dev/i2c-1 */ |
| | | dev = optarg; |
| | | break; |
| | | |
| | | case 'v': /* Get software version */ |
| | | banner(progname); |
| | | return EXIT_SUCCESS; |
| | | |
| | | case 'h': /* Get help information */ |
| | | program_usage(progname); |
| | | return 0; |
| | | |
| | | default: |
| | | break; |
| | | } |
| | | } |
| | | |
| | | if( at24c_init(&at24c, chipid) < 0 ) |
| | | { |
| | | printf("at24c initial failed!\n"); |
| | | return 1; |
| | | } |
| | | |
| | | if( i2c_init(&at24c.i2c, dev, AT24C_CHIPADDR) < 0 ) |
| | | { |
| | | printf("i2c initial failed!\n"); |
| | | return 2; |
| | | } |
| | | |
| | | if( at24c_test(&at24c) < 0 ) |
| | | { |
| | | return 3; |
| | | } |
| | | |
| | | i2c_term(&at24c.i2c); |
| | | return 0; |
| | | } |
| | | |
| | | /*+----------------------+ |
| | | *| EEPROM API functions | |
| | | *+----------------------+*/ |
| | | |
| | | int at24c_init(at24c_t *at24c, int chip) |
| | | { |
| | | int i; |
| | | |
| | | if( !at24c ) |
| | | return -1; |
| | | |
| | | for(i=0; i<sizeof(at24c_ids)/sizeof(at24c_ids[0]); i++) |
| | | { |
| | | if( at24c_ids[i].chip == chip ) |
| | | { |
| | | at24c->eeprom = &at24c_ids[i]; |
| | | printf("Detect EEPROM AT24C%02d capacity %d bytes, pagesize %d bytes.\r\n", |
| | | chip, at24c->eeprom->capacity, at24c->eeprom->pagesize); |
| | | return 0; |
| | | } |
| | | } |
| | | |
| | | printf("EEPROM: Can not found EEPROM by chip ID[%d]\r\n", chip); |
| | | return -2; |
| | | } |
| | | |
| | | int at24c_test(at24c_t *at24c) |
| | | { |
| | | eeprom_t *eeprom; |
| | | uint8_t buf[128]; |
| | | int i; |
| | | int addr = 0; |
| | | |
| | | if( !at24c ) |
| | | return -1; |
| | | |
| | | eeprom = at24c->eeprom; |
| | | |
| | | /* Read data before write */ |
| | | memset(buf, 0, sizeof(buf)); |
| | | if( at24c_read(at24c, addr, buf, sizeof(buf)) < 0 ) |
| | | { |
| | | return -2; |
| | | } |
| | | dump_buf("<<<EEPROM read data:\n", (char *)buf, sizeof(buf)); |
| | | |
| | | /* fill a page data */ |
| | | for(i=0; i<eeprom->pagesize; i++) |
| | | { |
| | | buf[i] = i; |
| | | } |
| | | |
| | | /* write a page data from the address not page alignment */ |
| | | if( at24c_write(at24c, addr+8, buf, eeprom->pagesize) < 0 ) |
| | | { |
| | | return -3; |
| | | } |
| | | |
| | | /* Read data after write */ |
| | | memset(buf, 0, sizeof(buf)); |
| | | if( at24c_read(at24c, addr, buf, sizeof(buf)) < 0 ) |
| | | { |
| | | return -2; |
| | | } |
| | | dump_buf("<<<EEPROM read data:\n", (char *)buf, sizeof(buf)); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* Figure 9. Page Write */ |
| | | int at24c_write_page(at24c_t *at24c, int offset, uint8_t *data, int len) |
| | | { |
| | | uint8_t buf[256]; |
| | | int bytes, rv; |
| | | int addrlen; |
| | | eeprom_t *eeprom; |
| | | |
| | | if(!at24c || offset<0 || !data || !len) |
| | | return -1; |
| | | |
| | | eeprom = at24c->eeprom; |
| | | |
| | | /* exceeding EEPROM size */ |
| | | if( offset+len > eeprom->capacity ) |
| | | return -1; |
| | | |
| | | if( len > eeprom->pagesize ) |
| | | len = eeprom->pagesize; |
| | | |
| | | /* |
| | | * A temporary write buffer must be used which contains both the address |
| | | * and the data to be written, put the address in first based upon the |
| | | * size of the address for the EEPROM. |
| | | */ |
| | | if( eeprom->chip >= AT24C16) |
| | | { |
| | | buf[0]=(uint8_t)(offset>>8); |
| | | buf[1]=(uint8_t)(offset); |
| | | addrlen = 2; |
| | | } |
| | | else |
| | | { |
| | | buf[0]=(uint8_t)(offset); |
| | | addrlen = 1; |
| | | } |
| | | |
| | | /* Put the data in the write buffer following the address */ |
| | | memcpy(&buf[addrlen], data, len); |
| | | |
| | | /* Write a page of data at the specified address to the EEPROM. */ |
| | | rv = i2c_write(&at24c->i2c, buf, len+addrlen); |
| | | if( rv < 0 ) |
| | | printf("%s() write data failed\n", __func__); |
| | | |
| | | /* Must give a delay here to wait page write finish */ |
| | | msleep(5); |
| | | |
| | | return rv; |
| | | } |
| | | |
| | | int at24c_write(at24c_t *at24c, int offset, uint8_t *data, int len) |
| | | { |
| | | int bytes; |
| | | eeprom_t *eeprom; |
| | | |
| | | if(!at24c || offset<0 || !data || len<0) |
| | | return -1; |
| | | |
| | | eeprom = at24c->eeprom; |
| | | |
| | | /* exceeding EEPROM size */ |
| | | if( offset+len > eeprom->capacity ) |
| | | return -1; |
| | | |
| | | /* The offset + write bytes shouldn't overflow that page, |
| | | * or it will over write the start bytes of this page */ |
| | | if( offset%eeprom->pagesize ) |
| | | bytes = eeprom->pagesize - offset%eeprom->pagesize; |
| | | else |
| | | bytes = len>eeprom->pagesize? eeprom->pagesize : len; |
| | | |
| | | /* Write max one page at a time */ |
| | | while(len > 0) |
| | | { |
| | | if( at24c_write_page(at24c, offset, data, bytes) ) |
| | | { |
| | | return -2; |
| | | } |
| | | |
| | | len -= bytes; |
| | | data += bytes; |
| | | offset += bytes; |
| | | |
| | | bytes = len>eeprom->pagesize? eeprom->pagesize : len; |
| | | } |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* Figure 12. Sequential Read */ |
| | | int at24c_read(at24c_t *at24c, int offset, uint8_t *buf, int size) |
| | | { |
| | | struct i2c_rdwr_ioctl_data tr; |
| | | eeprom_t *eeprom; |
| | | uint8_t addr[2]; |
| | | int addrlen; |
| | | int bytes; |
| | | int rv = 0; |
| | | |
| | | if(!at24c || offset<0 || !buf || size<=0) |
| | | return -1; |
| | | |
| | | eeprom = at24c->eeprom; |
| | | |
| | | /* exceeding EEPROM size */ |
| | | if( offset+size > eeprom->capacity ) |
| | | return -1; |
| | | |
| | | memset(buf, 0, size); |
| | | |
| | | if( eeprom->chip >= AT24C16) |
| | | { |
| | | addr[0]=(uint8_t)(offset>>8); |
| | | addr[1]=(uint8_t)(offset); |
| | | addrlen = 2; |
| | | } |
| | | else |
| | | { |
| | | addr[0]=(uint8_t)(offset); |
| | | addrlen = 1; |
| | | } |
| | | |
| | | /* We can't call i2c_write() and i2c_read() because it will generate a |
| | | * stop condition after send the offset address, it doesn't compatible |
| | | * with EEPROM sequential read sequence; |
| | | */ |
| | | |
| | | |
| | | /* use I2C userspace API to send two message without stop condition */ |
| | | |
| | | tr.nmsgs = 2; |
| | | tr.msgs = malloc( sizeof(struct i2c_msg)*tr.nmsgs ); |
| | | if ( !tr.msgs ) |
| | | { |
| | | printf("%s() msgs malloc failed!\n", __func__); |
| | | return -2; |
| | | } |
| | | |
| | | /* Create the I2C message for writing the EEPROM offset address */ |
| | | tr.msgs[0].addr = at24c->i2c.addr; |
| | | tr.msgs[0].flags = 0; //write |
| | | tr.msgs[0].len = addrlen; |
| | | tr.msgs[0].buf = addr; |
| | | |
| | | /* Create the I2C message for reading data from EEPROM */ |
| | | memset(buf, 0, size); |
| | | tr.msgs[1].addr = at24c->i2c.addr; |
| | | tr.msgs[1].flags = I2C_M_RD; //read |
| | | tr.msgs[1].len = size; |
| | | tr.msgs[1].buf = buf; |
| | | |
| | | if( ioctl(at24c->i2c.fd, I2C_RDWR, &tr)<0 ) |
| | | { |
| | | printf("%s() ioctl failure: %s\n", __func__, strerror(errno)); |
| | | rv = -4; |
| | | } |
| | | |
| | | free( tr.msgs ); |
| | | return rv; |
| | | } |
| | | |
| | | |
| | | /*+----------------------+ |
| | | *| I2C API functions | |
| | | *+----------------------+*/ |
| | | |
| | | int i2c_init(i2c_t *i2c, char *i2cdev, int addr) |
| | | { |
| | | if( !i2c || !i2cdev || !addr ) |
| | | return -1; |
| | | |
| | | memset(i2c, 0, sizeof(*i2c)); |
| | | i2c->addr = addr; |
| | | i2c->dev = i2cdev; |
| | | |
| | | if( (i2c->fd=open(i2cdev, O_RDWR)) < 0) |
| | | { |
| | | printf("open i2c device %s failed: %s\n", i2cdev, strerror(errno)); |
| | | return -1; |
| | | } |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | void i2c_term(i2c_t *i2c) |
| | | { |
| | | if( !i2c ) |
| | | return; |
| | | |
| | | if( i2c->fd > 0) |
| | | close(i2c->fd); |
| | | |
| | | return ; |
| | | } |
| | | |
| | | int i2c_write(i2c_t *i2c, uint8_t *data, int len) |
| | | { |
| | | struct i2c_rdwr_ioctl_data tr; |
| | | int rv = 0; |
| | | |
| | | if( !data || len<= 0) |
| | | { |
| | | printf("%s() invalid input arguments!\n", __func__); |
| | | return -1; |
| | | } |
| | | |
| | | /* I2C device program API: ioctl() */ |
| | | tr.nmsgs = 1; |
| | | tr.msgs = malloc( sizeof(struct i2c_msg)*tr.nmsgs ); |
| | | if ( !tr.msgs ) |
| | | { |
| | | printf("%s() msgs malloc failed!\n", __func__); |
| | | return -2; |
| | | } |
| | | |
| | | tr.msgs[0].addr = i2c->addr; |
| | | tr.msgs[0].flags = 0; //write |
| | | tr.msgs[0].len = len; |
| | | tr.msgs[0].buf = malloc(len); |
| | | if( !tr.msgs[0].buf ) |
| | | { |
| | | printf("%s() msgs malloc failed!\n", __func__); |
| | | rv = -3; |
| | | goto cleanup; |
| | | } |
| | | memcpy(tr.msgs[0].buf, data, len); |
| | | |
| | | |
| | | if( ioctl(i2c->fd, I2C_RDWR, &tr)<0 ) |
| | | { |
| | | printf("%s() ioctl failure: %s\n", __func__, strerror(errno)); |
| | | rv = -4; |
| | | goto cleanup; |
| | | } |
| | | |
| | | cleanup: |
| | | if( tr.msgs[0].buf ) |
| | | free(tr.msgs[0].buf); |
| | | |
| | | if( tr.msgs ) |
| | | free(tr.msgs); |
| | | |
| | | return rv; |
| | | } |
| | | |
| | | int i2c_read(i2c_t *i2c, uint8_t *buf, int size) |
| | | { |
| | | struct i2c_rdwr_ioctl_data tr; |
| | | int rv = 0; |
| | | |
| | | if( !buf || size<= 0) |
| | | { |
| | | printf("%s() invalid input arguments!\n", __func__); |
| | | return -1; |
| | | } |
| | | |
| | | tr.nmsgs = 1; |
| | | tr.msgs = malloc( sizeof(struct i2c_msg)*tr.nmsgs ); |
| | | if ( !tr.msgs ) |
| | | { |
| | | printf("%s() msgs malloc failed!\n", __func__); |
| | | return -2; |
| | | } |
| | | |
| | | tr.msgs[0].addr = i2c->addr; |
| | | tr.msgs[0].flags = I2C_M_RD; //read |
| | | tr.msgs[0].len = size; |
| | | tr.msgs[0].buf = buf; |
| | | memset(buf, 0, size); |
| | | |
| | | if( ioctl(i2c->fd, I2C_RDWR, &tr)<0 ) |
| | | { |
| | | printf("%s() ioctl failure: %s\n", __func__, strerror(errno)); |
| | | rv = -4; |
| | | } |
| | | |
| | | free( tr.msgs ); |
| | | return rv; |
| | | } |
| | | |
| | | /*+----------------------+ |
| | | *| Misc functions | |
| | | *+----------------------+*/ |
| | | |
| | | static inline void msleep(unsigned long ms) |
| | | { |
| | | struct timespec cSleep; |
| | | unsigned long ulTmp; |
| | | |
| | | cSleep.tv_sec = ms / 1000; |
| | | if (cSleep.tv_sec == 0) |
| | | { |
| | | ulTmp = ms * 10000; |
| | | cSleep.tv_nsec = ulTmp * 100; |
| | | } |
| | | else |
| | | { |
| | | cSleep.tv_nsec = 0; |
| | | } |
| | | |
| | | nanosleep(&cSleep, 0); |
| | | } |
| | | |
| | | void dump_buf(const char *prompt, char *buf, size_t len) |
| | | { |
| | | char line[256]; |
| | | size_t i, j; |
| | | int offset; |
| | | |
| | | if( prompt ) |
| | | { |
| | | printf("%s", prompt); |
| | | } |
| | | |
| | | for(i = 0; i < len; i += 16) |
| | | { |
| | | offset = snprintf(line, sizeof(line), "%08zx: ", i); |
| | | |
| | | /* Print hex representation */ |
| | | for (j = 0; j < 16; j++) |
| | | { |
| | | if (i + j < len) |
| | | offset += snprintf(line + offset, sizeof(line) - offset, "%02x ", buf[i + j]); |
| | | else |
| | | offset += snprintf(line + offset, sizeof(line) - offset, " "); |
| | | } |
| | | |
| | | offset += snprintf(line + offset, sizeof(line) - offset, " "); |
| | | |
| | | /* Print ASCII representation */ |
| | | for (j = 0; j < 16; j++) |
| | | { |
| | | if (i + j < len) |
| | | { |
| | | unsigned char c = buf[i + j]; |
| | | offset += snprintf(line + offset, sizeof(line) - offset, "%c", (c >= 32 && c <= 126) ? c : '.'); |
| | | } |
| | | else |
| | | { |
| | | offset += snprintf(line + offset, sizeof(line) - offset, " "); |
| | | } |
| | | } |
| | | |
| | | /* Print the line */ |
| | | printf("%s\n", line); |
| | | } |
| | | } |
New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2023 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: ds18b20.c |
| | | * Description: This file is temperature sensor DS18B20 code |
| | | * |
| | | * Version: 1.0.0(2023/8/10) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "2023/8/10 12:13:26" |
| | | * |
| | | * Pin connection: |
| | | * |
| | | * DS18B20 Module Raspberry Pi Board |
| | | * VCC <-----> #Pin1(3.3V) |
| | | * DQ <-----> #Pin7(BCM GPIO4) |
| | | * GND <-----> GND |
| | | * |
| | | * /boot/config.txt: |
| | | * |
| | | * dtoverlay=w1-gpio-pullup,gpiopin=4 |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <unistd.h> |
| | | #include <fcntl.h> |
| | | #include <dirent.h> |
| | | #include <string.h> |
| | | #include <time.h> |
| | | #include <errno.h> |
| | | |
| | | int ds18b20_get_temperature(float *temp); |
| | | |
| | | int main(int argc, char *argv[]) |
| | | { |
| | | float temp; |
| | | |
| | | if( ds18b20_get_temperature(&temp) < 0 ) |
| | | { |
| | | printf("ERROR: ds18b20 get temprature failure\n"); |
| | | return 1; |
| | | } |
| | | |
| | | printf("DS18B20 get temperature: %f ℃\n", temp); |
| | | return 0; |
| | | } |
| | | |
| | | |
| | | /* File Content: |
| | | pi@raspberrypi:~/guowenxue $ cat /sys/bus/w1/devices/28-041731f7c0ff/w1_slave |
| | | 3a 01 4b 46 7f ff 0c 10 a5 : crc=a5 YES |
| | | 3a 01 4b 46 7f ff 0c 10 a5 t=19625 |
| | | */ |
| | | |
| | | int ds18b20_get_temperature(float *temp) |
| | | { |
| | | char w1_path[50] = "/sys/bus/w1/devices/"; |
| | | char chip[20]; |
| | | char buf[128]; |
| | | DIR *dirp; |
| | | struct dirent *direntp; |
| | | int fd =-1; |
| | | char *ptr; |
| | | float value; |
| | | int found = 0; |
| | | |
| | | if( !temp ) |
| | | { |
| | | return -1; |
| | | } |
| | | |
| | | /*+-------------------------------------------------------------------+ |
| | | *| open dierectory /sys/bus/w1/devices to get chipset Serial Number | |
| | | *+-------------------------------------------------------------------+*/ |
| | | if((dirp = opendir(w1_path)) == NULL) |
| | | { |
| | | printf("opendir error: %s\n", strerror(errno)); |
| | | return -2; |
| | | } |
| | | |
| | | while((direntp = readdir(dirp)) != NULL) |
| | | { |
| | | if(strstr(direntp->d_name,"28-")) |
| | | { |
| | | /* find and get the chipset SN filename */ |
| | | strcpy(chip,direntp->d_name); |
| | | found = 1; |
| | | break; |
| | | } |
| | | } |
| | | closedir(dirp); |
| | | |
| | | if( !found ) |
| | | { |
| | | printf("Can not find ds18b20 in %s\n", w1_path); |
| | | return -3; |
| | | } |
| | | |
| | | /* get DS18B20 sample file full path: /sys/bus/w1/devices/28-xxxx/w1_slave */ |
| | | strncat(w1_path, chip, sizeof(w1_path)-strlen(w1_path)); |
| | | strncat(w1_path, "/w1_slave", sizeof(w1_path)-strlen(w1_path)); |
| | | |
| | | /* open file /sys/bus/w1/devices/28-xxxx/w1_slave to get temperature */ |
| | | if( (fd=open(w1_path, O_RDONLY)) < 0 ) |
| | | { |
| | | printf("open %s error: %s\n", w1_path, strerror(errno)); |
| | | return -4; |
| | | } |
| | | |
| | | if(read(fd, buf, sizeof(buf)) < 0) |
| | | { |
| | | printf("read %s error: %s\n", w1_path, strerror(errno)); |
| | | return -5; |
| | | } |
| | | |
| | | ptr = strstr(buf, "t="); |
| | | if( !ptr ) |
| | | { |
| | | printf("ERROR: Can not get temperature\n"); |
| | | return -6; |
| | | } |
| | | |
| | | ptr+=2; |
| | | |
| | | /* convert string value to float value */ |
| | | *temp = atof(ptr)/1000; |
| | | |
| | | close(fd); |
| | | |
| | | return 0; |
| | | } |
New file |
| | |
| | | #******************************************************************************** |
| | | # Copyright: (C) 2023 LingYun IoT System Studio |
| | | # All rights reserved. |
| | | # |
| | | # Filename: Makefile |
| | | # Description: This file used to compile all the C file to respective binary, |
| | | # and it will auto detect cross compile or local compile. |
| | | # |
| | | # Version: 1.0.0(11/08/23) |
| | | # Author: Guo Wenxue <guowenxue@gmail.com> |
| | | # ChangeLog: 1, Release initial version on "11/08/23 16:18:43" |
| | | # |
| | | #******************************************************************************* |
| | | |
| | | PWD=$(shell pwd) |
| | | INSTPATH=/tftp |
| | | |
| | | CROSS_COMPILE=arm-linux-gnueabihf- |
| | | CC=${CROSS_COMPILE}gcc |
| | | |
| | | LDFLAGS += -lm |
| | | |
| | | SRCS = $(wildcard ${VPATH}/*.c) |
| | | OBJS = $(patsubst %.c,%.o,$(SRCS)) |
| | | |
| | | SRCFILES = $(wildcard *.c) |
| | | BINARIES=$(SRCFILES:%.c=%) |
| | | |
| | | all: binaries install |
| | | |
| | | binaries: ${BINARIES} |
| | | |
| | | %: %.c |
| | | $(CC) $(CFLAGS) -o $@ $< $(LDFLAGS) |
| | | |
| | | install: |
| | | cp $(BINARIES) ${INSTPATH} |
| | | |
| | | clean: |
| | | @rm -f *.o *.lo $(BINARIES) |
| | | |
| | | distclean: clean |
| | | @rm -f tags cscope* |
| | | |
| | | .PHONY: clean entry |
New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2023 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: sht20.c |
| | | * Description: This file is temperature and relative humidity sensor SHT20 code |
| | | * |
| | | * Version: 1.0.0(10/08/23) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "10/08/23 17:52:00" |
| | | * |
| | | * Pin connection: |
| | | * SHT20 Raspberry Pi 40Pin |
| | | * VCC <-----> #Pin1(3.3V) |
| | | * SDA <-----> #Pin3(SDA, BCM GPIO2) |
| | | * SCL <-----> #Pin5(SCL, BCM GPIO3) |
| | | * GND <-----> GND |
| | | * |
| | | * /boot/config.txt: |
| | | * dtoverlay=i2c1,pins_2_3 |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <stdint.h> |
| | | #include <string.h> |
| | | #include <unistd.h> |
| | | #include <libgen.h> |
| | | #include <getopt.h> |
| | | #include <time.h> |
| | | #include <errno.h> |
| | | #include <fcntl.h> |
| | | #include <sys/ioctl.h> |
| | | #include <sys/types.h> |
| | | #include <sys/stat.h> |
| | | #include <linux/types.h> |
| | | #include <linux/i2c.h> |
| | | #include <linux/i2c-dev.h> |
| | | |
| | | /* SHT2X 7-bit I2C slave address */ |
| | | #define SHT2X_CHIPADDR 0x40 |
| | | |
| | | /* SHT2X trigger command */ |
| | | #define SOFTRESET 0xFE |
| | | #define TRIGGER_TEMPERATURE_NO_HOLD 0xF3 |
| | | #define TRIGGER_HUMIDITY_NO_HOLD 0xF5 |
| | | |
| | | /* Linux /dev/i2c-x device program API mode */ |
| | | enum |
| | | { |
| | | MODE_IOCTL, /* I2C device API use ioctl() */ |
| | | MODE_RDWR, /* I2C device API use read()/write() */ |
| | | }; |
| | | |
| | | typedef struct i2c_s |
| | | { |
| | | char *dev; /* I2C master device, /dev/i2c-N */ |
| | | int addr; /* 7-bits slave address */ |
| | | int fd; /* File description */ |
| | | int mode; /* I2C device API use read/write or ioctl mode */ |
| | | } i2c_t; |
| | | |
| | | int sht2x_softreset(i2c_t *i2c); |
| | | int sht2x_get_serialnumber(i2c_t *i2c, uint8_t *serialnumber, int size); |
| | | int sht2x_get_temp_humidity(i2c_t *i2c, float *temp, float *rh); |
| | | |
| | | int i2c_init(i2c_t *i2c, int mode, char *i2cdev, int addr); |
| | | int i2c_write(i2c_t *i2c, uint8_t *data, int len); |
| | | int i2c_read(i2c_t *i2c, uint8_t *buf, int size); |
| | | void i2c_term(i2c_t *i2c); |
| | | |
| | | static inline void msleep(unsigned long ms); |
| | | void print_buf(const char *prompt, uint8_t *buf, int size); |
| | | void dump_buf(const char *prompt, char *buf, size_t len); |
| | | |
| | | static inline void banner(const char *progname) |
| | | { |
| | | printf("%s program Version v1.0.0\n", progname); |
| | | printf("Copyright (C) 2023 Avnet.\n"); |
| | | } |
| | | |
| | | static void program_usage(const char *progname) |
| | | { |
| | | |
| | | printf("Usage: %s [OPTION]...\n", progname); |
| | | printf(" %s is SHT20 temperature and humidity sensor program. \n", progname); |
| | | |
| | | printf(" -d[device ] Specify I2C device, such as /dev/i2c-1\n"); |
| | | printf(" -m[mode ] Specify API mode, 0 for ioctl and 1 for read()/write()\n"); |
| | | printf(" -h[help ] Display this help information\n"); |
| | | printf(" -v[version ] Display the program version\n"); |
| | | |
| | | printf("\n"); |
| | | banner(progname); |
| | | return; |
| | | } |
| | | |
| | | int main(int argc, char **argv) |
| | | { |
| | | char *dev="/dev/i2c-1"; |
| | | char *progname=NULL; |
| | | int mode = MODE_IOCTL; |
| | | int rv; |
| | | float temp, rh; |
| | | uint8_t serialnumber[8]; |
| | | i2c_t i2c; |
| | | |
| | | struct option long_options[] = { |
| | | {"device", required_argument, NULL, 'd'}, |
| | | {"mode", required_argument, NULL, 'm'}, |
| | | {"version", no_argument, NULL, 'v'}, |
| | | {"help", no_argument, NULL, 'h'}, |
| | | {NULL, 0, NULL, 0} |
| | | }; |
| | | |
| | | progname = basename(argv[0]); |
| | | |
| | | /* Parser the command line parameters */ |
| | | while ((rv = getopt_long(argc, argv, "d:m:vh", long_options, NULL)) != -1) |
| | | { |
| | | switch (rv) |
| | | { |
| | | case 'd': /* Set I2C device path: /dev/i2c-1 */ |
| | | dev = optarg; |
| | | break; |
| | | |
| | | case 'm': /* Set I2C API mode: 0,1 */ |
| | | mode = atoi(optarg) ? MODE_RDWR : MODE_IOCTL; |
| | | break; |
| | | |
| | | case 'v': /* Get software version */ |
| | | banner(progname); |
| | | return EXIT_SUCCESS; |
| | | |
| | | case 'h': /* Get help information */ |
| | | program_usage(progname); |
| | | return 0; |
| | | |
| | | default: |
| | | break; |
| | | } |
| | | } |
| | | |
| | | if( i2c_init(&i2c, mode, dev, SHT2X_CHIPADDR) < 0 ) |
| | | { |
| | | printf("I2C master device initial failed.\n"); |
| | | return 1; |
| | | } |
| | | |
| | | if( sht2x_softreset(&i2c) < 0 ) |
| | | { |
| | | printf("SHT2x initialize failure, maybe device not present!\n"); |
| | | return 1; |
| | | } |
| | | |
| | | if( sht2x_get_serialnumber(&i2c, serialnumber, 8) < 0) |
| | | { |
| | | printf("SHT2x get serial number failure\n"); |
| | | return 3; |
| | | } |
| | | |
| | | if( sht2x_get_temp_humidity(&i2c, &temp, &rh) < 0 ) |
| | | { |
| | | printf("SHT2x get get temperature and relative humidity failure\n"); |
| | | return 3; |
| | | } |
| | | |
| | | printf("Temperature=%lf ℃ relative humidity=%lf.\n", temp, rh); |
| | | |
| | | i2c_term(&i2c); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | int sht2x_softreset(i2c_t *i2c) |
| | | { |
| | | uint8_t buf[1]; |
| | | |
| | | if( !i2c || i2c->fd<0 ) |
| | | { |
| | | printf("%s line [%d] %s() get invalid input arguments\n", __FILE__, __LINE__, __func__ ); |
| | | return -1; |
| | | } |
| | | |
| | | /* software reset SHT2x */ |
| | | buf[0] = SOFTRESET; |
| | | if( i2c_write(i2c, buf, 1) < 0 ) |
| | | { |
| | | return -2; |
| | | } |
| | | |
| | | msleep(50); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | int sht2x_get_temp_humidity(i2c_t *i2c, float *temp, float *rh) |
| | | { |
| | | uint8_t buf[4]; |
| | | |
| | | if( !i2c || !temp || !rh || i2c->fd<0 ) |
| | | { |
| | | printf("%s line [%d] %s() get invalid input arguments\n", __FILE__, __LINE__, __func__ ); |
| | | return -1; |
| | | } |
| | | |
| | | /* send trigger temperature measure command and read the data */ |
| | | memset(buf, 0, sizeof(buf)); |
| | | buf[0]=TRIGGER_TEMPERATURE_NO_HOLD; |
| | | i2c_write(i2c, buf, 1); |
| | | |
| | | msleep(85); /* datasheet: typ=66, max=85 */ |
| | | |
| | | memset(buf, 0, sizeof(buf)); |
| | | i2c_read(i2c, buf, 3); |
| | | print_buf("Temperature sample data: ", buf, 3); |
| | | *temp = 175.72 * (((((int) buf[0]) << 8) + buf[1]) / 65536.0) - 46.85; |
| | | |
| | | /* send trigger humidity measure command and read the data */ |
| | | memset(buf, 0, sizeof(buf)); |
| | | buf[0] = TRIGGER_HUMIDITY_NO_HOLD; |
| | | i2c_write(i2c, buf, 1); |
| | | |
| | | msleep(29); /* datasheet: typ=22, max=29 */ |
| | | memset(buf, 0, sizeof(buf)); |
| | | |
| | | i2c_read(i2c, buf, 3); |
| | | print_buf("Relative humidity sample data: ", buf, 3); |
| | | *rh = 125 * (((((int) buf[0]) << 8) + buf[1]) / 65536.0) - 6; |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | int sht2x_get_serialnumber(i2c_t *i2c, uint8_t *serialnumber, int size) |
| | | { |
| | | uint8_t buf[4]={0x0}; |
| | | |
| | | if( !i2c || i2c->fd<0 || !serialnumber || size!=8 ) |
| | | { |
| | | printf("%s line [%d] %s() get invalid input arguments\n", __FILE__, __LINE__, __func__ ); |
| | | return -1; |
| | | } |
| | | |
| | | /* Read SerialNumber from Location 1 */ |
| | | memset(buf, 0, sizeof(buf)); |
| | | buf[0] = 0xfa; /* command for readout on-chip memory */ |
| | | buf[1] = 0x0f; /* on-chip memory address */ |
| | | i2c_write(i2c, buf, 2); |
| | | |
| | | memset(buf, 0, sizeof(buf)); |
| | | i2c_read(i2c, buf, 4); |
| | | |
| | | if( !buf[0] && !buf[1] && !buf[2] && !buf[3] ) |
| | | { |
| | | printf("ERROR: SHT2X device not detected!\n"); |
| | | return -2; |
| | | } |
| | | |
| | | serialnumber[5]=buf[0]; /* Read SNB_3 */ |
| | | serialnumber[4]=buf[1]; /* Read SNB_2 */ |
| | | serialnumber[3]=buf[2]; /* Read SNB_1 */ |
| | | serialnumber[2]=buf[3]; /* Read SNB_0 */ |
| | | |
| | | /* Read SerialNumber from Location 2 */ |
| | | memset(buf, 0, sizeof(buf) ); |
| | | buf[0]=0xfc; /* command for readout on-chip memory */ |
| | | buf[1]=0xc9; /* on-chip memory address */ |
| | | i2c_write(i2c, buf, 2); |
| | | |
| | | memset(buf, 0, sizeof(buf) ); |
| | | i2c_read(i2c, buf, 4); |
| | | |
| | | serialnumber[1]=buf[0]; /* Read SNC_1 */ |
| | | serialnumber[0]=buf[1]; /* Read SNC_0 */ |
| | | serialnumber[7]=buf[2]; /* Read SNA_1 */ |
| | | serialnumber[6]=buf[3]; /* Read SNA_0 */ |
| | | |
| | | print_buf("SHT2x Serial number: ", serialnumber, 8); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /*+----------------------+ |
| | | *| I2C API functions | |
| | | *+----------------------+*/ |
| | | |
| | | int i2c_init(i2c_t *i2c, int mode, char *i2cdev, int addr) |
| | | { |
| | | if( !i2c || !i2cdev || !addr ) |
| | | return -1; |
| | | |
| | | memset(i2c, 0, sizeof(*i2c)); |
| | | i2c->addr = addr; |
| | | i2c->dev = i2cdev; |
| | | i2c->mode = mode; |
| | | |
| | | if( (i2c->fd=open(i2cdev, O_RDWR)) < 0) |
| | | { |
| | | printf("open i2c device %s failed: %s\n", i2cdev, strerror(errno)); |
| | | return -1; |
| | | } |
| | | |
| | | if( MODE_RDWR == i2c->mode ) |
| | | { |
| | | /* set I2C mode and SHT2x slave address */ |
| | | ioctl(i2c->fd, I2C_TENBIT, 0); /* Not 10-bit but 7-bit mode */ |
| | | ioctl(i2c->fd, I2C_SLAVE, i2c->addr); /* set SHT2x slave address */ |
| | | } |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | void i2c_term(i2c_t *i2c) |
| | | { |
| | | if( !i2c ) |
| | | return; |
| | | |
| | | if( i2c->fd > 0) |
| | | close(i2c->fd); |
| | | |
| | | return ; |
| | | } |
| | | |
| | | int i2c_write(i2c_t *i2c, uint8_t *data, int len) |
| | | { |
| | | struct i2c_rdwr_ioctl_data tr; |
| | | int rv = 0; |
| | | |
| | | if( !data || len<= 0) |
| | | { |
| | | printf("%s() invalid input arguments!\n", __func__); |
| | | return -1; |
| | | } |
| | | |
| | | /* I2C device program API: read()/write() */ |
| | | if( MODE_RDWR == i2c->mode ) |
| | | { |
| | | write(i2c->fd, data, len); |
| | | return 0; |
| | | } |
| | | |
| | | /* I2C device program API: ioctl() */ |
| | | tr.nmsgs = 1; |
| | | tr.msgs = malloc( sizeof(struct i2c_msg)*tr.nmsgs ); |
| | | if ( !tr.msgs ) |
| | | { |
| | | printf("%s() msgs malloc failed!\n", __func__); |
| | | return -2; |
| | | } |
| | | |
| | | tr.msgs[0].addr = i2c->addr; |
| | | tr.msgs[0].flags = 0; //write |
| | | tr.msgs[0].len = len; |
| | | tr.msgs[0].buf = malloc(len); |
| | | if( !tr.msgs[0].buf ) |
| | | { |
| | | printf("%s() msgs malloc failed!\n", __func__); |
| | | rv = -3; |
| | | goto cleanup; |
| | | } |
| | | memcpy(tr.msgs[0].buf, data, len); |
| | | |
| | | |
| | | if( ioctl(i2c->fd, I2C_RDWR, &tr)<0 ) |
| | | { |
| | | printf("%s() ioctl failure: %s\n", __func__, strerror(errno)); |
| | | rv = -4; |
| | | goto cleanup; |
| | | } |
| | | |
| | | cleanup: |
| | | if( tr.msgs[0].buf ) |
| | | free(tr.msgs[0].buf); |
| | | |
| | | if( tr.msgs ) |
| | | free(tr.msgs); |
| | | |
| | | return rv; |
| | | } |
| | | |
| | | int i2c_read(i2c_t *i2c, uint8_t *buf, int size) |
| | | { |
| | | struct i2c_rdwr_ioctl_data tr; |
| | | int rv = 0; |
| | | |
| | | if( !buf || size<= 0) |
| | | { |
| | | printf("%s() invalid input arguments!\n", __func__); |
| | | return -1; |
| | | } |
| | | |
| | | /* I2C device program API: read()/write() */ |
| | | if( MODE_RDWR == i2c->mode ) |
| | | { |
| | | read(i2c->fd, buf, size); |
| | | return 0; |
| | | } |
| | | |
| | | /* I2C device program API: ioctl() */ |
| | | tr.nmsgs = 1; |
| | | tr.msgs = malloc( sizeof(struct i2c_msg)*tr.nmsgs ); |
| | | if ( !tr.msgs ) |
| | | { |
| | | printf("%s() msgs malloc failed!\n", __func__); |
| | | return -2; |
| | | } |
| | | |
| | | tr.msgs[0].addr = i2c->addr; |
| | | tr.msgs[0].flags = I2C_M_RD; //read |
| | | tr.msgs[0].len = size; |
| | | tr.msgs[0].buf = buf; |
| | | memset(buf, 0, size); |
| | | |
| | | if( ioctl(i2c->fd, I2C_RDWR, &tr)<0 ) |
| | | { |
| | | printf("%s() ioctl failure: %s\n", __func__, strerror(errno)); |
| | | rv = -4; |
| | | } |
| | | |
| | | free( tr.msgs ); |
| | | return rv; |
| | | } |
| | | |
| | | /*+----------------------+ |
| | | *| Misc functions | |
| | | *+----------------------+*/ |
| | | |
| | | static inline void msleep(unsigned long ms) |
| | | { |
| | | struct timespec cSleep; |
| | | unsigned long ulTmp; |
| | | |
| | | cSleep.tv_sec = ms / 1000; |
| | | if (cSleep.tv_sec == 0) |
| | | { |
| | | ulTmp = ms * 10000; |
| | | cSleep.tv_nsec = ulTmp * 100; |
| | | } |
| | | else |
| | | { |
| | | cSleep.tv_nsec = 0; |
| | | } |
| | | |
| | | nanosleep(&cSleep, 0); |
| | | } |
| | | |
| | | void print_buf(const char *prompt, uint8_t *buf, int size) |
| | | { |
| | | int i; |
| | | |
| | | if( !buf ) |
| | | { |
| | | return ; |
| | | } |
| | | |
| | | if( prompt ) |
| | | { |
| | | printf("%s ", prompt); |
| | | } |
| | | |
| | | for(i=0; i<size; i++) |
| | | { |
| | | printf("%02x ", buf[i]); |
| | | } |
| | | printf("\n"); |
| | | |
| | | return ; |
| | | } |
| | | |
| | | void dump_buf(const char *prompt, char *buf, size_t len) |
| | | { |
| | | char line[256]; |
| | | size_t i, j; |
| | | int offset; |
| | | |
| | | if( prompt ) |
| | | { |
| | | printf("%s\n", prompt); |
| | | } |
| | | |
| | | for(i = 0; i < len; i += 16) |
| | | { |
| | | offset = snprintf(line, sizeof(line), "%08zx: ", i); |
| | | |
| | | /* Print hex representation */ |
| | | for (j = 0; j < 16; j++) |
| | | { |
| | | if (i + j < len) |
| | | offset += snprintf(line + offset, sizeof(line) - offset, "%02x ", buf[i + j]); |
| | | else |
| | | offset += snprintf(line + offset, sizeof(line) - offset, " "); |
| | | } |
| | | |
| | | offset += snprintf(line + offset, sizeof(line) - offset, " "); |
| | | |
| | | /* Print ASCII representation */ |
| | | for (j = 0; j < 16; j++) |
| | | { |
| | | if (i + j < len) |
| | | { |
| | | unsigned char c = buf[i + j]; |
| | | offset += snprintf(line + offset, sizeof(line) - offset, "%c", (c >= 32 && c <= 126) ? c : '.'); |
| | | } |
| | | else |
| | | { |
| | | offset += snprintf(line + offset, sizeof(line) - offset, " "); |
| | | } |
| | | } |
| | | |
| | | /* Print the line */ |
| | | printf("%s\n", line); |
| | | } |
| | | } |
| | | |
New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2023 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: sht20.c |
| | | * Description: This file is the Lux sensor TSL2561 code |
| | | * |
| | | * Version: 1.0.0(10/08/23) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "10/08/23 17:52:00" |
| | | * |
| | | * Pin connection: |
| | | * STH20 Module Raspberry Pi Board |
| | | * VCC <-----> #Pin1(3.3V) |
| | | * SDA <-----> #Pin27(SDA, BCM GPIO0) |
| | | * SCL <-----> #Pin28(SCL, BCM GPIO1) |
| | | * GND <-----> GND |
| | | * |
| | | * /boot/config.txt: |
| | | * dtoverlay=i2c0,pins_0_1 |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | |
| | | #include <string.h> |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <unistd.h> |
| | | #include <math.h> |
| | | #include <time.h> |
| | | #include <errno.h> |
| | | #include <libgen.h> |
| | | #include <getopt.h> |
| | | #include <fcntl.h> |
| | | #include <sys/ioctl.h> |
| | | #include <linux/i2c.h> |
| | | #include <linux/i2c-dev.h> |
| | | #include <sys/types.h> |
| | | #include <sys/stat.h> |
| | | |
| | | #define TSL2561_I2C_ADDR 0x39 |
| | | |
| | | #define CONTROL_REG 0x80 |
| | | #define REG_COUNT 4 |
| | | |
| | | #define POWER_UP 0x03 |
| | | #define POWER_DOWN 0x00 |
| | | |
| | | #define OFF 0 |
| | | #define ON 1 |
| | | |
| | | /* Register Address */ |
| | | enum |
| | | { |
| | | /* Channel_0 = DATA0HIGH<<8 + DATA0LOW */ |
| | | DATA0LOW = 0x8C, |
| | | DATA0HIGH, |
| | | |
| | | /* Channel_1 = DATA1HIGH<<8 + DATA1LOW */ |
| | | DATA1LOW, |
| | | DATA1HIGH, |
| | | }; |
| | | |
| | | static const int regs_addr[REG_COUNT]={DATA0LOW, DATA0HIGH, DATA1LOW, DATA1HIGH}; |
| | | |
| | | float tsl2561_get_lux(int fd); |
| | | static inline void print_datime(void); |
| | | |
| | | static inline void banner(const char *progname) |
| | | { |
| | | printf("%s program Version v1.0.0\n", progname); |
| | | printf("Copyright (C) 2023 LingYun IoT System Studio.\n"); |
| | | } |
| | | |
| | | static void program_usage(const char *progname) |
| | | { |
| | | |
| | | printf("Usage: %s [OPTION]...\n", progname); |
| | | printf(" %s is TSL2561 Lux sensor program.\n", progname); |
| | | |
| | | printf(" -d[device ] Specify I2C device, such as /dev/i2c-0\n"); |
| | | printf(" -h[help ] Display this help information\n"); |
| | | printf(" -v[version ] Display the program version\n"); |
| | | |
| | | printf("\n"); |
| | | banner(progname); |
| | | return; |
| | | } |
| | | |
| | | int main(int argc, char **argv) |
| | | { |
| | | int fd, rv; |
| | | float lux; |
| | | char *dev = "/dev/i2c-0"; |
| | | char *progname=NULL; |
| | | |
| | | struct option long_options[] = { |
| | | {"device", required_argument, NULL, 'd'}, |
| | | {"version", no_argument, NULL, 'v'}, |
| | | {"help", no_argument, NULL, 'h'}, |
| | | {NULL, 0, NULL, 0} |
| | | }; |
| | | |
| | | progname = basename(argv[0]); |
| | | |
| | | /* Parser the command line parameters */ |
| | | while ((rv = getopt_long(argc, argv, "d:vh", long_options, NULL)) != -1) |
| | | { |
| | | switch (rv) |
| | | { |
| | | case 'd': /* Set I2C device path: /dev/i2c-1 */ |
| | | dev = optarg; |
| | | break; |
| | | |
| | | case 'v': /* Get software version */ |
| | | banner(progname); |
| | | return EXIT_SUCCESS; |
| | | |
| | | case 'h': /* Get help information */ |
| | | program_usage(progname); |
| | | return 0; |
| | | |
| | | default: |
| | | break; |
| | | } |
| | | } |
| | | |
| | | /*+--------------------------------+ |
| | | *| open /dev/i2c-x device | |
| | | *+--------------------------------+*/ |
| | | if( (fd=open(dev, O_RDWR)) < 0) |
| | | { |
| | | printf("i2c device '%s' open failed: %s\n", dev, strerror(errno)); |
| | | return -1; |
| | | } |
| | | |
| | | while(1) |
| | | { |
| | | lux = tsl2561_get_lux(fd); |
| | | |
| | | print_datime(); |
| | | printf("TSLl2561 get lux: %.3f\n", lux); |
| | | |
| | | sleep(1); |
| | | } |
| | | |
| | | close(fd); |
| | | return 0; |
| | | } |
| | | |
| | | static inline void print_datime(void) |
| | | { |
| | | time_t tmp; |
| | | struct tm *p; |
| | | |
| | | time(&tmp); |
| | | |
| | | p=localtime(&tmp); |
| | | |
| | | |
| | | printf("%d-%02d-%02d %02d:%02d:%02d\t", (p->tm_year+1900),(p->tm_mon+1), |
| | | p->tm_mday, p->tm_hour, p->tm_min, p->tm_sec); |
| | | |
| | | } |
| | | |
| | | static inline void msleep(unsigned long ms) |
| | | { |
| | | struct timespec cSleep; |
| | | unsigned long ulTmp; |
| | | |
| | | cSleep.tv_sec = ms / 1000; |
| | | if (cSleep.tv_sec == 0) |
| | | { |
| | | ulTmp = ms * 10000; |
| | | cSleep.tv_nsec = ulTmp * 100; |
| | | } |
| | | else |
| | | { |
| | | cSleep.tv_nsec = 0; |
| | | } |
| | | |
| | | nanosleep(&cSleep, 0); |
| | | return ; |
| | | } |
| | | |
| | | void tsl2561_power(int fd, int cmd) |
| | | { |
| | | struct i2c_msg msg; |
| | | struct i2c_rdwr_ioctl_data data; |
| | | unsigned char buf[2]; |
| | | |
| | | msg.addr= TSL2561_I2C_ADDR; |
| | | msg.flags=0; /* write */ |
| | | msg.len= 1; |
| | | msg.buf= buf; |
| | | |
| | | data.nmsgs= 1; |
| | | data.msgs= &msg; |
| | | |
| | | msg.buf[0]=CONTROL_REG; |
| | | if( ioctl(fd, I2C_RDWR, &data) < 0 ) |
| | | { |
| | | printf("%s() ioctl failure: %s\n", __func__, strerror(errno)); |
| | | return ; |
| | | } |
| | | |
| | | |
| | | if( cmd ) |
| | | msg.buf[0]=POWER_UP; |
| | | else |
| | | msg.buf[0]=POWER_DOWN; |
| | | |
| | | if( ioctl(fd, I2C_RDWR, &data) < 0 ) |
| | | { |
| | | printf("%s() ioctl failure: %s\n", __func__, strerror(errno)); |
| | | return ; |
| | | } |
| | | |
| | | return ; |
| | | } |
| | | |
| | | int tsl2561_readreg(int fd, unsigned char regaddr, unsigned char *regval) |
| | | { |
| | | struct i2c_msg msg; |
| | | struct i2c_rdwr_ioctl_data data; |
| | | unsigned char buf[2]; |
| | | |
| | | msg.addr= TSL2561_I2C_ADDR; |
| | | msg.flags=0; /* write */ |
| | | msg.len= 1; |
| | | msg.buf= buf; |
| | | msg.buf[0] = regaddr; |
| | | |
| | | data.nmsgs= 1; |
| | | data.msgs= &msg; |
| | | |
| | | if( ioctl(fd, I2C_RDWR, &data) < 0 ) |
| | | { |
| | | printf("%s() ioctl failure: %s\n", __func__, strerror(errno)); |
| | | return -1; |
| | | } |
| | | |
| | | memset(buf, 0, sizeof(buf)); |
| | | |
| | | msg.addr= TSL2561_I2C_ADDR; |
| | | msg.flags=I2C_M_RD; /* read */ |
| | | msg.len= 1; |
| | | msg.buf= buf; |
| | | |
| | | data.nmsgs= 1; |
| | | data.msgs= &msg; |
| | | |
| | | if( ioctl(fd, I2C_RDWR, &data) < 0 ) |
| | | { |
| | | printf("%s() ioctl failure: %s\n", __func__, strerror(errno)); |
| | | return -1; |
| | | } |
| | | |
| | | *regval = msg.buf[0]; |
| | | return 0; |
| | | } |
| | | |
| | | float tsl2561_get_lux(int fd) |
| | | { |
| | | int i; |
| | | unsigned char reg_data[REG_COUNT]; |
| | | unsigned char buf; |
| | | |
| | | int chn0_data = 0; |
| | | int chn1_data = 0; |
| | | |
| | | float div = 0.0; |
| | | float lux = 0.0; |
| | | |
| | | tsl2561_power(fd, ON); |
| | | |
| | | msleep(410); /* t(CONV) MAX 400ms */ |
| | | |
| | | /* Read register Channel0 and channel1 data from register */ |
| | | for(i=0; i<REG_COUNT; i++) |
| | | { |
| | | tsl2561_readreg(fd, regs_addr[i], ®_data[i]); |
| | | } |
| | | |
| | | chn0_data = reg_data[1]*256 + reg_data[0]; /* Channel0 = DATA0HIGH<<8 + DATA0LOW */ |
| | | chn1_data = reg_data[3]*256 + reg_data[2]; /* channel1 = DATA1HIGH<<8 + DATA1LOW */ |
| | | |
| | | if( chn0_data<=0 || chn1_data<0 ) |
| | | { |
| | | lux = 0.0; |
| | | goto OUT; |
| | | } |
| | | |
| | | div = (float)chn1_data / (float)chn0_data; |
| | | |
| | | if( div>0 && div<=0.5 ) |
| | | lux = 0.304*chn0_data-0.062*chn0_data*pow(div,1.4); |
| | | |
| | | else if( div>0.5 && div<=0.61 ) |
| | | lux = 0.0224*chn0_data-0.031*chn1_data; |
| | | |
| | | else if( div>0.61 && div<=0.8 ) |
| | | lux = 0.0128*chn0_data-0.0153*chn1_data; |
| | | |
| | | else if( div>0.8 && div<=1.3 ) |
| | | lux = 0.00146*chn0_data-0.00112*chn1_data; |
| | | |
| | | else if( div>1.3 ) |
| | | lux = 0.0; |
| | | |
| | | OUT: |
| | | tsl2561_power(fd, OFF); |
| | | return lux; |
| | | } |
| | | |
| | | static inline void dump_buf(const char *prompt, char *buf, int size) |
| | | { |
| | | int i; |
| | | |
| | | if( !buf ) |
| | | { |
| | | return ; |
| | | } |
| | | |
| | | if( prompt ) |
| | | { |
| | | printf("%-32s ", prompt); |
| | | } |
| | | |
| | | for(i=0; i<size; i++) |
| | | { |
| | | printf("%02x ", buf[i]); |
| | | } |
| | | printf("\n"); |
| | | |
| | | return ; |
| | | } |
New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2023 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: at24c.c |
| | | * Description: This file is AT24Cxx EEPROM code |
| | | * |
| | | * Version: 1.0.0(10/08/23) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "10/08/23 17:52:00" |
| | | * |
| | | * Pin connection: |
| | | * W25QXX Raspberry Pi 40Pin |
| | | * VCC <---> Pin#1 (3.3V) |
| | | * CS <---> Pin#24(CS) |
| | | * DO <---> Pin#21(MISO) |
| | | * GND <---> Pin#9 (GND) |
| | | * CLK <---> Pin#23(SCLK) |
| | | * DI <---> Pin#19(MOSI) |
| | | * |
| | | * /boot/config.txt: |
| | | * dtparam=spi=on |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | |
| | | |
| | | #include <stdint.h> |
| | | #include <unistd.h> |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <errno.h> |
| | | #include <getopt.h> |
| | | #include <fcntl.h> |
| | | #include <time.h> |
| | | #include <sys/ioctl.h> |
| | | #include <linux/ioctl.h> |
| | | #include <sys/stat.h> |
| | | #include <linux/types.h> |
| | | #include <linux/spi/spidev.h> |
| | | |
| | | #include "w25qflash.h" |
| | | |
| | | #ifdef _W25QXX_DEBUG |
| | | #define spinor_print(format,args...) printf(format, ##args) |
| | | #else |
| | | #define spinor_print(format,args...) do{} while(0) |
| | | #endif |
| | | |
| | | #define spinor_Delay(delay) usleep(delay*1000) |
| | | |
| | | /*+-----------------------+ |
| | | *| Entry Functions | |
| | | *+-----------------------+*/ |
| | | |
| | | void dump_buf(const char *prompt, char *buf, size_t len); |
| | | |
| | | int main (int argc, char **argv) |
| | | { |
| | | spinor_test(); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | |
| | | /*+-----------------------+ |
| | | *| SPI API Functions | |
| | | *+-----------------------+*/ |
| | | |
| | | #define SPI_DEV "/dev/spidev0" /* SPI device 0 */ |
| | | #define SPI_CS0 0 /* SPI CS0 */ |
| | | #define SPI_CS1 1 /* SPI CS1 */ |
| | | #define SPI_BITS 8 |
| | | #define SPI_MODE 0 /* (SPI_CPHA|SPI_CPOL) */ |
| | | #define SPI_SPEED 500000 |
| | | |
| | | #define SPI_DUMMY_BYTE 0xA5 |
| | | |
| | | int spi_lowlevel_init(spi_bus_t *spi) |
| | | { |
| | | uint8_t bits = SPI_BITS; |
| | | uint32_t speed = SPI_SPEED; |
| | | uint32_t mode = SPI_MODE; |
| | | uint32_t request; |
| | | char dev[32]; |
| | | int rv = 0; |
| | | |
| | | snprintf(dev, sizeof(dev), "%s.%d", SPI_DEV, spi->cs); |
| | | |
| | | spi->hspi = open(dev, O_RDWR); |
| | | if (spi->hspi < 0) |
| | | { |
| | | printf("ERROR: open device %s failure: %s\r\n", dev, strerror(errno)); |
| | | return -2; |
| | | } |
| | | printf("Open '%s' for W25Q SPI norflash\n", dev); |
| | | |
| | | /* |
| | | * spi mode |
| | | */ |
| | | request = mode; |
| | | if( ioctl(spi->hspi, SPI_IOC_WR_MODE32, &mode) < 0 ) |
| | | { |
| | | printf("ERROR: can't set spi mode\n"); |
| | | rv = -3; |
| | | goto cleanup; |
| | | } |
| | | |
| | | if( ioctl(spi->hspi, SPI_IOC_RD_MODE32, &mode) < 0 ) |
| | | { |
| | | printf("ERROR: can't get spi mode\n"); |
| | | rv = -3; |
| | | goto cleanup; |
| | | } |
| | | |
| | | if (request != mode) |
| | | { |
| | | printf("WARNING: device does not support requested mode 0x%x\n", request); |
| | | } |
| | | |
| | | /* |
| | | * bits per word |
| | | */ |
| | | if( ioctl(spi->hspi, SPI_IOC_WR_BITS_PER_WORD, &bits) < 0 ) |
| | | { |
| | | printf("ERROR: can't set bits per word\n"); |
| | | rv = -3; |
| | | goto cleanup; |
| | | } |
| | | |
| | | if( ioctl(spi->hspi, SPI_IOC_RD_BITS_PER_WORD, &bits) < 0 ) |
| | | { |
| | | printf("ERROR: can't get bits per word\n"); |
| | | rv = -3; |
| | | goto cleanup; |
| | | } |
| | | |
| | | /* |
| | | * max speed hz |
| | | */ |
| | | if( ioctl(spi->hspi, SPI_IOC_WR_MAX_SPEED_HZ, &speed) < 0 ) |
| | | { |
| | | printf("ERROR: can't set max speed hz\n"); |
| | | rv = -3; |
| | | goto cleanup; |
| | | } |
| | | |
| | | if( ioctl(spi->hspi, SPI_IOC_RD_MAX_SPEED_HZ, &speed) < 0 ) |
| | | { |
| | | printf("ERROR: can't get max speed hz\n"); |
| | | rv = -3; |
| | | goto cleanup; |
| | | } |
| | | |
| | | printf("spi mode: 0x%x\n", mode); |
| | | printf("bits per word: %u\n", bits); |
| | | printf("max speed: %u Hz (%u kHz)\n", speed, speed/1000); |
| | | |
| | | cleanup: |
| | | if( rv < 0 ) |
| | | { |
| | | close(spi->hspi); |
| | | spi->hspi = -1; |
| | | } |
| | | |
| | | return rv; |
| | | } |
| | | |
| | | void spi_cs_enable(spi_bus_t *spi) |
| | | { |
| | | /* |
| | | * No need set CS in Linux because the device name /dev/spi0.0 |
| | | * will choose the first slave device, second slave is spi0.1 |
| | | */ |
| | | (void)0; |
| | | } |
| | | |
| | | void spi_cs_disable(spi_bus_t *spi) |
| | | { |
| | | (void)0; |
| | | } |
| | | |
| | | void spi_xcmd(spi_bus_t *spi, uint8_t command) |
| | | { |
| | | uint8_t rxbyte; |
| | | struct spi_ioc_transfer tr = { |
| | | .tx_buf = (unsigned long)&command, |
| | | .rx_buf = (unsigned long)&rxbyte, |
| | | .len = 1, |
| | | .delay_usecs = 0, |
| | | .speed_hz = SPI_SPEED, |
| | | .bits_per_word = SPI_BITS, |
| | | }; |
| | | |
| | | if( ioctl(spi->hspi, SPI_IOC_MESSAGE(1), &tr) < 0 ) |
| | | { |
| | | printf("ERROR: can't send spi message:%s\n", strerror(errno)); |
| | | } |
| | | |
| | | return; |
| | | } |
| | | |
| | | void spi_xfer(spi_bus_t *spi, uint8_t *send_buf, uint8_t *recv_buf, int bytes) |
| | | { |
| | | struct spi_ioc_transfer tr = { |
| | | .tx_buf = (unsigned long)send_buf, |
| | | .rx_buf = (unsigned long)recv_buf, |
| | | .len = bytes, |
| | | .delay_usecs = 0, |
| | | .speed_hz = SPI_SPEED, |
| | | .bits_per_word = SPI_BITS, |
| | | }; |
| | | |
| | | if( ioctl(spi->hspi, SPI_IOC_MESSAGE(1), &tr) < 0 ) |
| | | { |
| | | printf("ERROR: can't send spi message:%s\n", strerror(errno)); |
| | | } |
| | | |
| | | return; |
| | | } |
| | | |
| | | #define SPI_INFO(_hspi, _cs) {\ |
| | | .hspi = _hspi, \ |
| | | .hspi = _cs, \ |
| | | .select = spi_cs_enable, \ |
| | | .deselect = spi_cs_disable, \ |
| | | .xcmd = spi_xcmd, \ |
| | | .xfer = spi_xfer, \ |
| | | } |
| | | |
| | | static spi_bus_t spinor_spi = SPI_INFO(-1, SPI_CS0); |
| | | |
| | | |
| | | /*+-----------------------+ |
| | | *| W25Q SPI Norflash ID | |
| | | *+-----------------------+*/ |
| | | |
| | | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
| | | |
| | | /* JEDEC ID the 3rd bytes is the storage capacity */ |
| | | #pragma GCC diagnostic ignored "-Wshift-count-overflow" |
| | | #define CAPCITY_ID(id) (1UL<<(id&0xFF)) |
| | | #define NOR_INFO(_name, _jedec_id) \ |
| | | .name = _name, \ |
| | | .jedec_id = _jedec_id, \ |
| | | .block_size = W25Q_BLKSIZE, \ |
| | | .sector_size= W25Q_SECSIZE, \ |
| | | .page_size = W25Q_PAGSIZE, \ |
| | | .capacity = CAPCITY_ID(_jedec_id), \ |
| | | .n_blocks = CAPCITY_ID(_jedec_id)/W25Q_BLKSIZE, \ |
| | | .n_sectors = CAPCITY_ID(_jedec_id)/W25Q_SECSIZE, \ |
| | | .n_pages = CAPCITY_ID(_jedec_id)/W25Q_PAGSIZE, \ |
| | | |
| | | static flash_t flash_ids[] = { |
| | | { NOR_INFO("W25Q512", 0xef4020) }, |
| | | { NOR_INFO("W25Q256", 0xef4019) }, |
| | | { NOR_INFO("W25Q128", 0xef4018) }, |
| | | { NOR_INFO("W25Q64", 0xef4017) }, |
| | | { NOR_INFO("W25Q32", 0xef4016) }, |
| | | { NOR_INFO("W25Q16", 0xef4015) }, |
| | | { NOR_INFO("W25Q80", 0xef4014) }, |
| | | { NOR_INFO("W25Q40", 0xef4013) }, |
| | | { NOR_INFO("W25Q20", 0xef4012) }, |
| | | { NOR_INFO("W25Q10", 0xef4011) }, |
| | | }; |
| | | |
| | | /*+-------------------------------+ |
| | | *| SPI Norflash HighLevel API | |
| | | *+-------------------------------+*/ |
| | | |
| | | /* SPI Norflash API test function */ |
| | | void spinor_test(void) |
| | | { |
| | | spinor_t spinor; |
| | | int i; |
| | | uint8_t buf[W25Q_PAGSIZE*2]; |
| | | |
| | | if( spinor_init(&spinor) < 0 ) |
| | | return ; |
| | | |
| | | //spinor_erase_chip(&spinor); |
| | | //spinor_erase_block(&spinor, 1, W25Q_BLKSIZE); |
| | | spinor_erase_sector(&spinor, 1, W25Q_SECSIZE); |
| | | |
| | | memset(buf, 0, sizeof(buf)); |
| | | spinor_read(&spinor, 0, buf, sizeof(buf)); |
| | | dump_buf("<<<Read data after erase:\n", (char *)buf, sizeof(buf)); |
| | | |
| | | /* Read/Write data test on address not page align */ |
| | | for(i=0; i<sizeof(buf); i++) |
| | | buf[i] = i; |
| | | spinor_write(&spinor, 16, buf, W25Q_PAGSIZE); |
| | | |
| | | memset(buf, 0, sizeof(buf)); |
| | | spinor_read(&spinor, 0, buf, W25Q_PAGSIZE*2); |
| | | dump_buf("<<<Read data after write:\n", (char *)buf, sizeof(buf)); |
| | | |
| | | return ; |
| | | } |
| | | |
| | | /* Initial SPI and detect the flash chip */ |
| | | int spinor_init(spinor_t *spinor) |
| | | { |
| | | int i, found = 0; |
| | | uint32_t jedec_id; |
| | | |
| | | spinor->lock = 0; |
| | | spinor->spi = &spinor_spi; |
| | | |
| | | /* Initial SPI bus */ |
| | | if( spi_lowlevel_init(spinor->spi) < 0 ) |
| | | { |
| | | printf("ERROR: SPI lowlevel init failed\r\n"); |
| | | return -2; |
| | | } |
| | | |
| | | /* Read JEDEC ID to find the flash */ |
| | | jedec_id = spinor_read_jedecid(spinor->spi); |
| | | for(i=0; i<ARRAY_SIZE(flash_ids); i++) |
| | | { |
| | | if(flash_ids[i].jedec_id == jedec_id) |
| | | { |
| | | found = 1; |
| | | spinor->flash = &flash_ids[i]; |
| | | break; |
| | | } |
| | | } |
| | | |
| | | if( !found ) |
| | | { |
| | | printf("ERROR: W25Q Norflash JEDEC ID detect failed!\r\n"); |
| | | return -3; |
| | | } |
| | | |
| | | printf("Norflash %s ID[0x%x] detected, capacity %llu KB, %u blocks, %u pages.\r\n", |
| | | spinor->flash->name, jedec_id, spinor->flash->capacity>>10, |
| | | spinor->flash->n_blocks, spinor->flash->n_pages); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* Description: Erase whole flash chip. |
| | | * Reference : P60, 8.2.32 Chip Erase (C7h / 60h) |
| | | */ |
| | | int spinor_erase_chip(spinor_t *spinor) |
| | | { |
| | | spi_bus_t *spi = spinor->spi; |
| | | uint32_t timeout; |
| | | uint8_t regval; |
| | | |
| | | while (spinor->lock == 1) |
| | | spinor_Delay(1); |
| | | |
| | | spinor->lock = 1; |
| | | spi->select(spi); |
| | | |
| | | spinor_print("Norflash EraseChip Begin...\r\n"); |
| | | |
| | | /* Wait for flash ready */ |
| | | spinor_WaitForReady(spi); |
| | | |
| | | /* Write Enable */ |
| | | spinor_write_enable(spi); |
| | | |
| | | /* Entire flash erase */ |
| | | spi->xcmd(spi, SPINOR_OP_CHIP_ERASE); |
| | | |
| | | /* Wait for erase finish */ |
| | | timeout = 0; |
| | | while (1) |
| | | { |
| | | if (timeout == 300) |
| | | { |
| | | spinor_print("\r\nErase entire flash timeout\r\n"); |
| | | break; |
| | | } |
| | | |
| | | regval = spinor_read_status_reg(spi, SPINOR_OP_RDSR1); |
| | | if( !(regval&0x1) ) |
| | | { |
| | | spinor_print("\r\nNorflash EraseChip done.\r\n"); |
| | | break; |
| | | } |
| | | |
| | | #ifdef _W25QXX_DEBUG |
| | | printf("."); |
| | | spinor_Delay(1000); |
| | | #endif |
| | | } |
| | | |
| | | printf("\n"); |
| | | |
| | | spi->deselect(spi); |
| | | spinor->lock = 0; |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* Description: Erase blocks by 64KiB, |
| | | * Reference : P59, 8.2.31 64KB Block Erase with 4-Byte Address (DCh) |
| | | * @address is the erase start physical address, which can be not block alignment such as 0x10001. |
| | | * @size is the erase size, which can be larger than a block such as 4097, and it will erase 2 blocks; |
| | | */ |
| | | int spinor_erase_block(spinor_t *spinor, uint32_t address, uint32_t size) |
| | | { |
| | | spi_bus_t *spi = spinor->spi; |
| | | flash_t *flash = spinor->flash; |
| | | uint32_t block, first, last; |
| | | uint32_t addr; |
| | | uint8_t buf[5]; |
| | | int bytes = 0; |
| | | |
| | | while (spinor->lock == 1) |
| | | spinor_Delay(1); |
| | | |
| | | spinor->lock = 1; |
| | | spi->select(spi); |
| | | |
| | | spinor_print("Norflash Erase %d Bytes Block@0x%x Begin...\r\n", size, address); |
| | | |
| | | /* find first and last erase block */ |
| | | first = address / flash->block_size; |
| | | last = (address+size-1) / flash->block_size; |
| | | |
| | | /* start erase all the blocks */ |
| | | for( block=first; block<=last; block++) |
| | | { |
| | | addr = block * flash->sector_size; |
| | | spinor_print("Norflash Erase Block@%x ...\r\n", addr); |
| | | |
| | | spinor_WaitForReady(spi); |
| | | spinor_write_enable(spi); |
| | | |
| | | if (spinor->flash->n_blocks >= 512 ) /* larger than W25Q256 */ |
| | | { |
| | | buf[bytes++] = SPINOR_OP_BE_4K_4B; |
| | | buf[bytes++] = (addr & 0xFF000000) >> 24; |
| | | } |
| | | else |
| | | { |
| | | buf[bytes++] = SPINOR_OP_BE_4K; |
| | | } |
| | | buf[bytes++] = (addr & 0xFF0000) >> 16 ; |
| | | buf[bytes++] = (addr & 0xFF00) >> 8 ; |
| | | buf[bytes++] = (addr & 0xFF); |
| | | |
| | | spi->xfer(spi, buf, NULL, bytes); |
| | | |
| | | spinor_WaitForReady(spi); |
| | | } |
| | | |
| | | spinor_print("Norflash EraseBlock@0x%x done.\r\n", address); |
| | | |
| | | spi->deselect(spi); |
| | | spinor->lock = 0; |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* Description: Erase sectors by 4KiB |
| | | * Reference : P56, 8.2.28 Sector Erase with 4-Byte Address (21h) |
| | | * @address is the erase start physical address, which can be not sector alignment such as 0x1001. |
| | | * @size is the erase size, which can be larger than a sector such as 4097, and it will erase 2 sectors; |
| | | */ |
| | | int spinor_erase_sector(spinor_t *spinor, uint32_t address, uint32_t size) |
| | | { |
| | | spi_bus_t *spi = spinor->spi; |
| | | flash_t *flash = spinor->flash; |
| | | uint32_t sector, first, last; |
| | | uint32_t addr; |
| | | uint8_t buf[5]; |
| | | int bytes = 0; |
| | | |
| | | while (spinor->lock == 1) |
| | | spinor_Delay(1); |
| | | |
| | | spinor->lock = 1; |
| | | spi->select(spi); |
| | | |
| | | spinor_print("Norflash Erase %d Bytes Sector@0x%x Begin...\r\n", size, address); |
| | | |
| | | /* find first and last erase sector */ |
| | | first = address / flash->sector_size; |
| | | last = (address+size-1) / flash->sector_size; |
| | | |
| | | /* start erase all the sectors */ |
| | | for( sector=first; sector<=last; sector++) |
| | | { |
| | | addr = sector * flash->sector_size; |
| | | spinor_print("Norflash Erase Sector@%x ...\r\n", addr); |
| | | |
| | | spinor_WaitForReady(spi); |
| | | spinor_write_enable(spi); |
| | | |
| | | if (spinor->flash->n_blocks >= 512 ) /* larger than W25Q256 */ |
| | | { |
| | | buf[bytes++] = SPINOR_OP_SE_4B; |
| | | buf[bytes++] = (addr & 0xFF000000) >> 24; |
| | | } |
| | | else |
| | | { |
| | | buf[bytes++] = SPINOR_OP_SE; |
| | | } |
| | | buf[bytes++] = (addr & 0xFF0000) >> 16 ; |
| | | buf[bytes++] = (addr & 0xFF00) >> 8 ; |
| | | buf[bytes++] = (addr & 0xFF); |
| | | |
| | | spi->xfer(spi, buf, NULL, bytes); |
| | | |
| | | spinor_WaitForReady(spi); |
| | | } |
| | | |
| | | spinor_print("Norflash EraseSector@0x%x done.\r\n", address); |
| | | |
| | | spi->deselect(spi); |
| | | spinor->lock = 0; |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* Description: Page random write by 256B |
| | | * @addr is the write start physical address, which can be not page alignment such as 0x101. |
| | | * @size is the write size, which can be larger than a page such as 257, and it will write 2 pages; |
| | | */ |
| | | int spinor_write(spinor_t *spinor, uint32_t address, uint8_t *data, uint32_t size) |
| | | { |
| | | spi_bus_t *spi = spinor->spi; |
| | | flash_t *flash = spinor->flash; |
| | | uint32_t page, first, last; |
| | | uint32_t addr, ofset, len; |
| | | uint8_t buf[W25Q_PAGSIZE+OVERHEAD_SIZE]; |
| | | int bytes = 0; |
| | | |
| | | if( address+size > spinor->flash->capacity ) |
| | | return -1; |
| | | |
| | | while (spinor->lock == 1) |
| | | spinor_Delay(1); |
| | | |
| | | spinor->lock = 1; |
| | | spi->select(spi); |
| | | |
| | | spinor_print("Norflash Write %d Bytes to addr@0x%x Begin...\r\n", size, address); |
| | | |
| | | /* find first and last write page */ |
| | | first = address / flash->page_size; |
| | | last = (address+size-1) / flash->page_size; |
| | | |
| | | /* address in page and offset in buffer */ |
| | | addr = address; |
| | | ofset = 0; |
| | | |
| | | /* start write all the pages */ |
| | | for( page=first; page<=last; page++) |
| | | { |
| | | len = flash->page_size - (addr%flash->page_size); |
| | | len = len > size ? size : len; |
| | | |
| | | spinor_print("Norflash write addr@0x%x, %u bytes\r\n", addr, len); |
| | | |
| | | spinor_WaitForReady(spi); |
| | | spinor_write_enable(spi); |
| | | |
| | | bytes = 0; |
| | | if (spinor->flash->n_blocks >= 512 ) |
| | | { |
| | | buf[bytes++] = SPINOR_OP_PP_4B; |
| | | buf[bytes++] = (addr & 0xFF000000) >> 24; |
| | | } |
| | | else |
| | | { |
| | | buf[bytes++] = SPINOR_OP_PP; |
| | | } |
| | | buf[bytes++] = (addr & 0xFF0000) >> 16 ; |
| | | buf[bytes++] = (addr & 0xFF00) >> 8 ; |
| | | buf[bytes++] = (addr & 0xFF); |
| | | |
| | | /* send command and data */ |
| | | memcpy(&buf[bytes], data+ofset, len); |
| | | bytes += len; |
| | | |
| | | spi->xfer(spi, buf, NULL, bytes); |
| | | |
| | | spinor_WaitForReady(spi); |
| | | |
| | | addr += len; |
| | | ofset += len; |
| | | size -= len; |
| | | } |
| | | |
| | | spinor_print("Norflash WriteByte@0x%x done.\r\n", address); |
| | | |
| | | spi->deselect(spi); |
| | | spinor->lock = 0; |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* Description: The Fast Read instruction can read the entire memory chip. |
| | | * Reference : P41, 8.2.13 Fast Read with 4-Byte Address (0Ch) |
| | | * @address is the read start physical address, which can be not page alignment such as 0x101. |
| | | * @size is the read size, which can be larger than a page such as 257, and it will read 2 pages; |
| | | */ |
| | | int spinor_read(spinor_t *spinor, uint32_t address, uint8_t *data, uint32_t size) |
| | | { |
| | | spi_bus_t *spi = spinor->spi; |
| | | uint8_t buf[W25Q_PAGSIZE+OVERHEAD_SIZE]; |
| | | int bytes = 0; |
| | | int ofset; |
| | | uint32_t addr = address; |
| | | |
| | | if( address+size > spinor->flash->capacity ) |
| | | return -1; |
| | | |
| | | while (spinor->lock == 1) |
| | | spinor_Delay(1); |
| | | |
| | | spinor->lock = 1; |
| | | spi->select(spi); |
| | | |
| | | spinor_print("Norflash Read %d Bytes from addr@0x%x Begin...\r\n", size, address); |
| | | |
| | | while( size > 0 ) |
| | | { |
| | | bytes = size>W25Q_PAGSIZE ? W25Q_PAGSIZE : size; |
| | | memset(buf, SPI_DUMMY_BYTE, sizeof(buf)); |
| | | |
| | | spinor_print("Norflash read addr@0x%x, %d bytes\r\n", addr, bytes); |
| | | |
| | | /* send instruction and address */ |
| | | ofset = 0; |
| | | if (spinor->flash->n_blocks >= 512 ) |
| | | { |
| | | buf[ofset++] = SPINOR_OP_READ_FAST_4B; |
| | | buf[ofset++] = (addr & 0xFF000000) >> 24; |
| | | } |
| | | else |
| | | { |
| | | buf[ofset++] = SPINOR_OP_READ_FAST; |
| | | } |
| | | buf[ofset++] = (addr & 0xFF0000) >> 16 ; |
| | | buf[ofset++] = (addr & 0xFF00) >> 8 ; |
| | | buf[ofset++] = (addr & 0xFF); |
| | | |
| | | ofset += 1; /* Skip first dummy byte */ |
| | | |
| | | /* Send command and read data out */ |
| | | spi->xfer(spi, buf, buf, ofset+bytes); |
| | | |
| | | memcpy(data, &buf[ofset], bytes); |
| | | size -= bytes; |
| | | addr += bytes; |
| | | data += bytes; |
| | | } |
| | | |
| | | spinor_print("Norflash ReadBytes@0x%x done.\r\n", address); |
| | | |
| | | spi->deselect(spi); |
| | | spinor->lock = 0; |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /*+-------------------------------+ |
| | | *| SPI Norflash LowLevel API | |
| | | *+-------------------------------+*/ |
| | | |
| | | /* Description: Read the chipset UNIQUE ID. |
| | | * Reference : P68, 8.2.40 Read Unique ID Number (4Bh) |
| | | */ |
| | | int spinor_read_uniqid(spi_bus_t *spi, uint8_t *uniq_id) |
| | | { |
| | | uint8_t i; |
| | | uint8_t buf[13]; /* Instruction(1B) + Dummy(4B) + UID(8B)*/ |
| | | |
| | | if( !uniq_id ) |
| | | return -1; |
| | | |
| | | /* Enable SPI chip select */ |
| | | spi->select(spi); |
| | | |
| | | /* Wait for flash ready */ |
| | | spinor_WaitForReady(spi); |
| | | |
| | | buf[0] = SPINOR_OP_RDUID; |
| | | spi->xfer(spi, buf, buf, sizeof(buf)); |
| | | |
| | | /* Skip 4 bytes dummy bytes */ |
| | | for (i=0; i<8; i++) |
| | | { |
| | | uniq_id[i] = buf[5+i]; |
| | | } |
| | | |
| | | /* Disable SPI chip select */ |
| | | spi->deselect(spi); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* Description: Read the chipset JEDEC ID. |
| | | * Reference : P69, 8.2.41 Read JEDEC ID (9Fh) |
| | | */ |
| | | uint32_t spinor_read_jedecid(spi_bus_t *spi) |
| | | { |
| | | uint32_t jedec_id = 0x0; |
| | | uint8_t buf[4]; |
| | | |
| | | /* Enable SPI chip select */ |
| | | spi->select(spi); |
| | | |
| | | /* Wait for flash ready */ |
| | | spinor_WaitForReady(spi); |
| | | |
| | | /* Send Read JEDEC ID command 0x9F */ |
| | | buf[0] = SPINOR_OP_RDID; |
| | | spi->xfer(spi, buf, buf, sizeof(buf)); |
| | | jedec_id = (buf[1] << 16) | (buf[2] << 8) | buf[3]; |
| | | |
| | | /* Disable SPI chip select */ |
| | | spi->deselect(spi); |
| | | |
| | | return jedec_id; |
| | | } |
| | | |
| | | /* Description: Write Enable |
| | | * Reference : P31, 8.2.1 Write Enable (06h) |
| | | */ |
| | | void spinor_write_enable(spi_bus_t *spi) |
| | | { |
| | | spi->xcmd(spi, SPINOR_OP_WREN); |
| | | |
| | | spinor_WaitForReady(spi); |
| | | } |
| | | |
| | | /* Description: Write Disable |
| | | * Reference : P32, 8.2.3 Write Disable (04h) |
| | | */ |
| | | void spinor_write_disable(spi_bus_t *spi) |
| | | { |
| | | spi->xcmd(spi, SPINOR_OP_WRDI); |
| | | |
| | | spinor_WaitForReady(spi); |
| | | } |
| | | |
| | | /* Description: Read Status Register |
| | | * Reference : P32, 8.2.4 Read Status Register-1 (05h), Status Register-2 (35h) & Status Register-3 (15h) |
| | | */ |
| | | uint8_t spinor_read_status_reg(spi_bus_t *spi, uint8_t reg) |
| | | { |
| | | uint8_t buf[2]; |
| | | |
| | | buf[0] = reg; |
| | | spi->xfer(spi, buf, buf, sizeof(buf)); |
| | | |
| | | return buf[1]; |
| | | } |
| | | |
| | | /* Description: Write Status Register |
| | | * Reference : P33, 8.2.5 Write Status Register-1 (01h), Status Register-2 (31h) & Status Register-3 (11h) |
| | | */ |
| | | void spinor_write_status_reg(spi_bus_t *spi, uint8_t reg, uint8_t value) |
| | | { |
| | | uint8_t buf[2]; |
| | | |
| | | buf[0] = reg; |
| | | buf[1] = value; |
| | | spi->xfer(spi, buf, buf, sizeof(buf)); |
| | | } |
| | | |
| | | /* Description: Wait flash program/erase finished by read Status Register for BUSY bit |
| | | * Reference : P15, 7.1 Status Registers |
| | | */ |
| | | void spinor_WaitForReady(spi_bus_t *spi) |
| | | { |
| | | uint8_t regval; |
| | | |
| | | do |
| | | { |
| | | regval = spinor_read_status_reg(spi, SPINOR_OP_RDSR1); |
| | | } while ((regval & 0x01) == 0x01); |
| | | } |
| | | |
| | | /*+----------------------+ |
| | | *| Misc functions | |
| | | *+----------------------+*/ |
| | | |
| | | void dump_buf(const char *prompt, char *buf, size_t len) |
| | | { |
| | | char line[256]; |
| | | size_t i, j; |
| | | int offset; |
| | | |
| | | if( prompt ) |
| | | { |
| | | printf("%s", prompt); |
| | | } |
| | | |
| | | for(i = 0; i < len; i += 16) |
| | | { |
| | | offset = snprintf(line, sizeof(line), "%08zx: ", i); |
| | | |
| | | /* Print hex representation */ |
| | | for (j = 0; j < 16; j++) |
| | | { |
| | | if (i + j < len) |
| | | offset += snprintf(line + offset, sizeof(line) - offset, "%02x ", buf[i + j]); |
| | | else |
| | | offset += snprintf(line + offset, sizeof(line) - offset, " "); |
| | | } |
| | | |
| | | offset += snprintf(line + offset, sizeof(line) - offset, " "); |
| | | |
| | | /* Print ASCII representation */ |
| | | for (j = 0; j < 16; j++) |
| | | { |
| | | if (i + j < len) |
| | | { |
| | | unsigned char c = buf[i + j]; |
| | | offset += snprintf(line + offset, sizeof(line) - offset, "%c", (c >= 32 && c <= 126) ? c : '.'); |
| | | } |
| | | else |
| | | { |
| | | offset += snprintf(line + offset, sizeof(line) - offset, " "); |
| | | } |
| | | } |
| | | |
| | | /* Print the line */ |
| | | printf("%s\n", line); |
| | | } |
| | | } |
New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2023 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: at24c.c |
| | | * Description: This file is AT24Cxx EEPROM code |
| | | * |
| | | * Version: 1.0.0(10/08/23) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "10/08/23 17:52:00" |
| | | * |
| | | * Pin connection: |
| | | * W25QXX Raspberry Pi 40Pin |
| | | * VCC <---> Pin#1 (3.3V) |
| | | * CS <---> Pin#24(CS) |
| | | * DO <---> Pin#21(MISO) |
| | | * GND <---> Pin#9 (GND) |
| | | * CLK <---> Pin#23(SCLK) |
| | | * DI <---> Pin#19(MOSI) |
| | | * |
| | | * /boot/config.txt: |
| | | * dtparam=spi=on |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #ifndef _W25QFLASH_H |
| | | #define _W25QFLASH_H |
| | | |
| | | #include <stdbool.h> |
| | | |
| | | #define _W25QXX_DEBUG 1 |
| | | |
| | | /* W25Q SPI Norflash page/sector/block size */ |
| | | #define W25Q_PAGSIZE 256 /* 1Page=256B */ |
| | | #define W25Q_SECSIZE 4096 /* 1Sector=16Pages=4KB */ |
| | | #define W25Q_BLKSIZE 65536 /* 1Block=16Sector=64KB */ |
| | | |
| | | /* Flash opcodes. Refer to <<W25Q256JV.pdf>> P26 Table 8.1.2 Instruction Set Table */ |
| | | #define SPINOR_OP_RDID 0x9f /* Read JEDEC ID */ |
| | | #define SPINOR_OP_RDUID 0x4b /* Read unique ID */ |
| | | #define SPINOR_OP_WRSR1 0x01 /* Write status register-1 */ |
| | | #define SPINOR_OP_WRSR2 0x31 /* Write status register-2 */ |
| | | #define SPINOR_OP_WRSR3 0x11 /* Write status register-3 */ |
| | | #define SPINOR_OP_BP 0x02 /* Byte program */ |
| | | #define SPINOR_OP_READ 0x03 /* Read data bytes (low frequency) */ |
| | | #define SPINOR_OP_WRDI 0x04 /* Write disable */ |
| | | #define SPINOR_OP_RDSR1 0x05 /* Read status register-1 */ |
| | | #define SPINOR_OP_RDSR2 0x35 /* Read status register-2 */ |
| | | #define SPINOR_OP_RDSR3 0x15 /* Read status register-3 */ |
| | | #define SPINOR_OP_WREN 0x06 /* Write enable */ |
| | | #define SPINOR_OP_READ_FAST 0x0b /* Read data bytes (high frequency) */ |
| | | #define SPINOR_OP_READ_FAST_4B 0x0c /* Read data bytes (high frequency) */ |
| | | |
| | | #define SPINOR_OP_CHIP_ERASE 0xc7 /* Erase whole flash chip */ |
| | | #define SPINOR_OP_BE_4K_4B 0xdc /* Block erase (64KiB) with 4-Byte Address */ |
| | | #define SPINOR_OP_BE_4K 0xd8 /* Block erase (64KiB) */ |
| | | #define SPINOR_OP_SE_4B 0x21 /* Sector erase (4KiB) with 4-Byte Address */ |
| | | #define SPINOR_OP_SE 0x20 /* Sector erase (4KiB) */ |
| | | #define SPINOR_OP_PP_4B 0x12 /* Page Program (up to 256 bytes) with 4-Byte Address */ |
| | | #define SPINOR_OP_PP 0x02 /* Page program (up to 256 bytes) */ |
| | | #define SPINOR_OP_SRSTEN 0x66 /* Software Reset Enable */ |
| | | #define SPINOR_OP_SRST 0x99 /* Software Reset */ |
| | | |
| | | /* All the above command default work as 4 bytes mode */ |
| | | #define OVERHEAD_SIZE 6 |
| | | |
| | | typedef struct spi_bus |
| | | { |
| | | int hspi; /* SPI bus handler */ |
| | | int cs; /* SPI cs pin number */ |
| | | |
| | | void (*select)(struct spi_bus *spi); /* CS enable function */ |
| | | void (*deselect)(struct spi_bus *spi); /* CS disable function */ |
| | | void (*xcmd)(struct spi_bus *spi, uint8_t command); /* Send a byte command */ |
| | | void (*xfer)(struct spi_bus *spi, uint8_t *send_buf, uint8_t *recv_buf, int bytes); /* Transmit and Receive N byte */ |
| | | } spi_bus_t; |
| | | |
| | | typedef struct flash_s |
| | | { |
| | | char *name; /* Chip name */ |
| | | uint32_t jedec_id; /* JEDEC ID, 3 bytes */ |
| | | uint64_t capacity; /* Chip size in bytes */ |
| | | uint32_t block_size; /* Block size in bytes */ |
| | | uint32_t sector_size; /* Sector size in bytes */ |
| | | uint32_t page_size; /* Page size in bytes */ |
| | | uint32_t n_blocks; /* Number of blocks */ |
| | | uint32_t n_sectors; /* Number of sectors */ |
| | | uint32_t n_pages; /* Number of pages */ |
| | | } flash_t; |
| | | |
| | | |
| | | typedef struct spinor_s |
| | | { |
| | | spi_bus_t *spi; |
| | | flash_t *flash; |
| | | uint8_t lock; |
| | | } spinor_t; |
| | | |
| | | |
| | | /*+-------------------------------+ |
| | | *| SPI Norflash HighLevel API | |
| | | *+-------------------------------+*/ |
| | | |
| | | /* SPI Norflash API test function */ |
| | | extern void spinor_test(void); |
| | | |
| | | /* Initial SPI and detect the flash chip */ |
| | | extern int spinor_init(spinor_t *spinor); |
| | | |
| | | /* Description: Erase whole flash chip. |
| | | * Reference : P60, 8.2.32 Chip Erase (C7h / 60h) |
| | | */ |
| | | extern int spinor_erase_chip(spinor_t *spinor); |
| | | |
| | | /* Description: Erase blocks by 64KiB, |
| | | * Reference : P59, 8.2.31 64KB Block Erase with 4-Byte Address (DCh) |
| | | * @address is the erase start physical address, which can be not block alignment such as 0x10001. |
| | | * @size is the erase size, which can be larger than a block such as 4097, and it will erase 2 blocks; |
| | | */ |
| | | extern int spinor_erase_block(spinor_t *spinor, uint32_t address, uint32_t size); |
| | | |
| | | /* Description: Erase sectors by 4KiB |
| | | * Reference : P56, 8.2.28 Sector Erase with 4-Byte Address (21h) |
| | | * @address is the erase start physical address, which can be not sector alignment such as 0x1001. |
| | | * @size is the erase size, which can be larger than a sector such as 4097, and it will erase 2 sectors; |
| | | */ |
| | | extern int spinor_erase_sector(spinor_t *spinor, uint32_t address, uint32_t size); |
| | | |
| | | /* Description: Page random write by 256B |
| | | * @addr is the write start physical address, which can be not page alignment such as 0x101. |
| | | * @size is the write size, which can be larger than a page such as 257, and it will write 2 pages; |
| | | */ |
| | | extern int spinor_write(spinor_t *spinor, uint32_t address, uint8_t *data, uint32_t bytes); |
| | | |
| | | /* Description: The Fast Read instruction can read the entire memory chip. |
| | | * Reference : P41, 8.2.13 Fast Read with 4-Byte Address (0Ch) |
| | | * @address is the read start physical address, which can be not page alignment such as 0x101. |
| | | * @size is the read size, which can be larger than a page such as 257, and it will read 2 pages; |
| | | */ |
| | | extern int spinor_read(spinor_t *spinor, uint32_t address, uint8_t *buf, uint32_t bytes); |
| | | |
| | | /*+-------------------------------+ |
| | | *| SPI Norflash LowLevel API | |
| | | *+-------------------------------+*/ |
| | | |
| | | /* Description: Read the chipset UNIQUE ID. |
| | | * Reference : P68, 8.2.40 Read Unique ID Number (4Bh) |
| | | */ |
| | | int spinor_read_uniqid(spi_bus_t *spi, uint8_t *uniq_id); |
| | | |
| | | /* Description: Read the chipset JEDEC ID. |
| | | * Reference : P69, 8.2.41 Read JEDEC ID (9Fh) |
| | | */ |
| | | uint32_t spinor_read_jedecid(spi_bus_t *spi); |
| | | |
| | | /* Description: Write Enable |
| | | * Reference : P31, 8.2.1 Write Enable (06h) |
| | | */ |
| | | void spinor_write_enable(spi_bus_t *spi); |
| | | |
| | | /* Description: Write Disable |
| | | * Reference : P32, 8.2.3 Write Disable (04h) |
| | | */ |
| | | void spinor_write_disable(spi_bus_t *spi); |
| | | |
| | | /* Description: Read Status Register |
| | | * Reference : P32, 8.2.4 Read Status Register-1 (05h), Status Register-2 (35h) & Status Register-3 (15h) |
| | | */ |
| | | uint8_t spinor_read_status_reg(spi_bus_t *spi, uint8_t reg); |
| | | |
| | | /* Description: Write Status Register |
| | | * Reference : P33, 8.2.5 Write Status Register-1 (01h), Status Register-2 (31h) & Status Register-3 (11h) |
| | | */ |
| | | void spinor_write_status_reg(spi_bus_t *spi, uint8_t reg, uint8_t value); |
| | | |
| | | /* Description: Wait flash program/erase finished by read Status Register for BUSY bit |
| | | * Reference : P15, 7.1 Status Registers |
| | | */ |
| | | void spinor_WaitForReady(spi_bus_t *spi); |
| | | |
| | | #endif |