add i2c_sht20.c spidev_test.c
1 files modified
2 files added
New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2022 Guo Wenxue <guowenxue@gmail.com> |
| | | * All rights reserved. |
| | | * |
| | | * Filename: sht20.c |
| | | * Description: This file is temperature and relative humidity sensor SHT20 code |
| | | * |
| | | * Version: 1.0.0(2022/4/14) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "2022/04/14 12:13:26" |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | /* |
| | | * Hardware connection: |
| | | * |
| | | * Sht20 Module RaspberryPi/IGKBoard |
| | | * VCC <-----> 3.3V |
| | | * SDA <-----> SDA |
| | | * SCL <-----> SCL |
| | | * GND <-----> GND |
| | | */ |
| | | |
| | | #include <stdio.h> |
| | | #include <fcntl.h> |
| | | #include <unistd.h> |
| | | #include <sys/ioctl.h> |
| | | #include <linux/types.h> |
| | | #include <sys/stat.h> |
| | | #include <linux/i2c-dev.h> |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <sys/types.h> |
| | | #include <string.h> |
| | | #include <stdint.h> |
| | | #include <time.h> |
| | | #include <errno.h> |
| | | #include <string.h> |
| | | |
| | | |
| | | #define SOFTRESET 0xFE |
| | | #define TRIGGER_TEMPERATURE_NO_HOLD 0xF3 |
| | | #define TRIGGER_HUMIDITY_NO_HOLD 0xF5 |
| | | |
| | | static inline void msleep(unsigned long ms); |
| | | static inline void dump_buf(const char *prompt, uint8_t *buf, int size); |
| | | int sht2x_init(char *i2c_dev); |
| | | int sht2x_get_serialnumber(int fd, uint8_t *serialnumber, int size); |
| | | int sht2x_get_temp_humidity(int fd, float *temp, float *rh); |
| | | |
| | | int main(int argc, char **argv) |
| | | { |
| | | int fd; |
| | | float temp; |
| | | float rh; |
| | | uint8_t serialnumber[8]; |
| | | |
| | | if( argc != 2) |
| | | { |
| | | printf("This program used to do I2C test by sht20 temperature & humidity module.\n"); |
| | | printf("Usage: %s /dev/i2c-x\n", argv[0]); |
| | | return 0; |
| | | } |
| | | |
| | | fd = sht2x_init(argv[1]); |
| | | if(fd < 0) |
| | | { |
| | | printf("SHT2x initialize failure\n"); |
| | | return 1; |
| | | } |
| | | |
| | | if( sht2x_get_serialnumber(fd, serialnumber, 8) < 0) |
| | | { |
| | | printf("SHT2x get serial number failure\n"); |
| | | return 3; |
| | | } |
| | | |
| | | if( sht2x_get_temp_humidity(fd, &temp, &rh) < 0 ) |
| | | { |
| | | printf("SHT2x get get temperature and relative humidity failure\n"); |
| | | return 3; |
| | | } |
| | | |
| | | printf("Temperature=%lf ℃ relative humidity=%lf.\n", temp, rh); |
| | | |
| | | close(fd); |
| | | } |
| | | |
| | | |
| | | 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); |
| | | } |
| | | |
| | | static inline void dump_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 ; |
| | | } |
| | | |
| | | |
| | | int sht2x_softreset(int fd) |
| | | { |
| | | uint8_t buf[4]; |
| | | |
| | | if( fd<0 ) |
| | | { |
| | | printf("%s line [%d] %s() get invalid input arguments\n", __FILE__, __LINE__, __func__ ); |
| | | return -1; |
| | | } |
| | | |
| | | /* software reset SHT2x */ |
| | | memset(buf, 0, sizeof(buf)); |
| | | |
| | | buf[0] = SOFTRESET; |
| | | write(fd, buf, 1); |
| | | |
| | | msleep(50); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | int sht2x_init(char *i2c_dev) |
| | | { |
| | | int fd; |
| | | |
| | | if( (fd=open(i2c_dev, O_RDWR)) < 0) |
| | | { |
| | | printf("i2c device open failed: %s\n", strerror(errno)); |
| | | return -1; |
| | | } |
| | | |
| | | /* set I2C mode and SHT2x slave address */ |
| | | ioctl(fd, I2C_TENBIT, 0); /* Not 10-bit but 7-bit mode */ |
| | | ioctl(fd, I2C_SLAVE, 0x40); /* set SHT2x slava address 0x40*/ |
| | | |
| | | if( sht2x_softreset(fd) < 0 ) |
| | | { |
| | | printf("SHT2x softreset failure\n"); |
| | | return -2; |
| | | } |
| | | |
| | | return fd; |
| | | } |
| | | |
| | | int sht2x_get_temp_humidity(int fd, float *temp, float *rh) |
| | | { |
| | | uint8_t buf[4]; |
| | | |
| | | if( fd<0 || !temp || !rh ) |
| | | { |
| | | 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; |
| | | write(fd, buf, 1); |
| | | |
| | | msleep(85); /* datasheet: typ=66, max=85 */ |
| | | |
| | | memset(buf, 0, sizeof(buf)); |
| | | read(fd, buf, 3); |
| | | dump_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; |
| | | write(fd, buf, 1); |
| | | |
| | | msleep(29); /* datasheet: typ=22, max=29 */ |
| | | memset(buf, 0, sizeof(buf)); |
| | | |
| | | read(fd, buf, 3); |
| | | dump_buf("Relative humidity sample data: ", buf, 3); |
| | | *rh = 125 * (((((int) buf[0]) << 8) + buf[1]) / 65536.0) - 6; |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | int sht2x_get_serialnumber(int fd, uint8_t *serialnumber, int size) |
| | | { |
| | | uint8_t buf[4]; |
| | | |
| | | if( 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 */ |
| | | write(fd, buf, 2); |
| | | |
| | | memset(buf, 0, sizeof(buf)); |
| | | read(fd, buf, 4); |
| | | |
| | | 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 */ |
| | | write(fd, buf, 2); |
| | | |
| | | memset(buf, 0, sizeof(buf) ); |
| | | read(fd, 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 */ |
| | | |
| | | dump_buf("SHT2x Serial number: ", serialnumber, 8); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | |
| | |
| | | LIB_NAME=$(shell basename ${LIB_PATH} ) |
| | | |
| | | CFLAGS+=-I${LIB_PATH} |
| | | LDFLAGS+=-L${LIB_PATH} -l${LIB_NAME} |
| | | LDFLAGS+=-L${LIB_PATH} -l${LIB_NAME} -lpthread |
| | | |
| | | SRCFILES = $(wildcard *.c) |
| | | BINARIES=$(SRCFILES:%.c=%) |
| | |
| | | libs: |
| | | make -C ${LIB_PATH} |
| | | |
| | | binaries: ${BINARIES} |
| | | binaries: ${BINARIES} |
| | | @echo " Compile over" |
| | | |
| | | %: %.c |
| | | %: %.c |
| | | $(CC) $(CFLAGS) -o $@ $< $(LDFLAGS) |
| | | |
| | | clean: |
| | | @rm -f ${BINARIES} |
| | | @rm -f ${BINARIES} |
| | | @rm -f *.log |
| | | |
| | | distclean: |
New file |
| | |
| | | // SPDX-License-Identifier: GPL-2.0-only |
| | | /* |
| | | * SPI testing utility (using spidev driver) |
| | | * |
| | | * Copyright (c) 2007 MontaVista Software, Inc. |
| | | * Copyright (c) 2007 Anton Vorontsov <avorontsov@ru.mvista.com> |
| | | * |
| | | * Cross-compile with cross-gcc -I/path/to/cross-kernel/include |
| | | * |
| | | * |
| | | * SPI loop test usage: |
| | | * |
| | | * 1. Shortcut MOSI and MISO: |
| | | * |
| | | * root@igkboard:~# spidev_test -D /dev/spidev0.0 -v |
| | | * spi mode: 0x4 |
| | | * bits per word: 8 |
| | | * max speed: 500000 Hz (500 kHz) |
| | | * TX | FF FF FF FF FF FF 40 00 00 00 00 95 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF F0 0D |
| | | * RX | FF FF FF FF FF FF 40 00 00 00 00 95 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF F0 0D |
| | | * |
| | | * 2. Not shortcut MOSI and MISO: |
| | | * |
| | | * root@igkboard:~# spidev_test -D /dev/spidev0.0 -v |
| | | * spi mode: 0x4 |
| | | * bits per word: 8 |
| | | * max speed: 500000 Hz (500 kHz) |
| | | * TX | FF FF FF FF FF FF 40 00 00 00 00 95 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF F0 0D |
| | | * RX | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| | | * |
| | | */ |
| | | |
| | | #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> |
| | | |
| | | #define SPI_TX_OCTAL 0x2000 |
| | | #define SPI_RX_OCTAL 0x4000 |
| | | |
| | | #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) |
| | | |
| | | static void pabort(const char *s) |
| | | { |
| | | if (errno != 0) |
| | | perror(s); |
| | | else |
| | | printf("%s\n", s); |
| | | |
| | | abort(); |
| | | } |
| | | |
| | | static const char *device = "/dev/spidev1.1"; |
| | | static uint32_t mode; |
| | | static uint8_t bits = 8; |
| | | static char *input_file; |
| | | static char *output_file; |
| | | static uint32_t speed = 500000; |
| | | static uint16_t delay; |
| | | static int verbose; |
| | | static int transfer_size; |
| | | static int iterations; |
| | | static int interval = 5; /* interval in seconds for showing transfer rate */ |
| | | |
| | | static uint8_t default_tx[] = { |
| | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | | 0x40, 0x00, 0x00, 0x00, 0x00, 0x95, |
| | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| | | 0xF0, 0x0D, |
| | | }; |
| | | |
| | | static uint8_t default_rx[ARRAY_SIZE(default_tx)] = {0, }; |
| | | static char *input_tx; |
| | | |
| | | static void hex_dump(const void *src, size_t length, size_t line_size, |
| | | char *prefix) |
| | | { |
| | | int i = 0; |
| | | const unsigned char *address = src; |
| | | const unsigned char *line = address; |
| | | unsigned char c; |
| | | |
| | | printf("%s | ", prefix); |
| | | while (length-- > 0) { |
| | | printf("%02X ", *address++); |
| | | if (!(++i % line_size) || (length == 0 && i % line_size)) { |
| | | if (length == 0) { |
| | | while (i++ % line_size) |
| | | printf("__ "); |
| | | } |
| | | printf(" |"); |
| | | while (line < address) { |
| | | c = *line++; |
| | | printf("%c", (c < 32 || c > 126) ? '.' : c); |
| | | } |
| | | printf("|\n"); |
| | | if (length > 0) |
| | | printf("%s | ", prefix); |
| | | } |
| | | } |
| | | } |
| | | |
| | | /* |
| | | * Unescape - process hexadecimal escape character |
| | | * converts shell input "\x23" -> 0x23 |
| | | */ |
| | | static int unescape(char *_dst, char *_src, size_t len) |
| | | { |
| | | int ret = 0; |
| | | int match; |
| | | char *src = _src; |
| | | char *dst = _dst; |
| | | unsigned int ch; |
| | | |
| | | while (*src) { |
| | | if (*src == '\\' && *(src+1) == 'x') { |
| | | match = sscanf(src + 2, "%2x", &ch); |
| | | if (!match) |
| | | pabort("malformed input string"); |
| | | |
| | | src += 4; |
| | | *dst++ = (unsigned char)ch; |
| | | } else { |
| | | *dst++ = *src++; |
| | | } |
| | | ret++; |
| | | } |
| | | return ret; |
| | | } |
| | | |
| | | static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len) |
| | | { |
| | | int ret; |
| | | int out_fd; |
| | | struct spi_ioc_transfer tr = { |
| | | .tx_buf = (unsigned long)tx, |
| | | .rx_buf = (unsigned long)rx, |
| | | .len = len, |
| | | .delay_usecs = delay, |
| | | .speed_hz = speed, |
| | | .bits_per_word = bits, |
| | | }; |
| | | |
| | | if (mode & SPI_TX_OCTAL) |
| | | tr.tx_nbits = 8; |
| | | else if (mode & SPI_TX_QUAD) |
| | | tr.tx_nbits = 4; |
| | | else if (mode & SPI_TX_DUAL) |
| | | tr.tx_nbits = 2; |
| | | if (mode & SPI_RX_OCTAL) |
| | | tr.rx_nbits = 8; |
| | | else if (mode & SPI_RX_QUAD) |
| | | tr.rx_nbits = 4; |
| | | else if (mode & SPI_RX_DUAL) |
| | | tr.rx_nbits = 2; |
| | | if (!(mode & SPI_LOOP)) { |
| | | if (mode & (SPI_TX_OCTAL | SPI_TX_QUAD | SPI_TX_DUAL)) |
| | | tr.rx_buf = 0; |
| | | else if (mode & (SPI_RX_OCTAL | SPI_RX_QUAD | SPI_RX_DUAL)) |
| | | tr.tx_buf = 0; |
| | | } |
| | | |
| | | ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); |
| | | if (ret < 1) |
| | | pabort("can't send spi message"); |
| | | |
| | | if (verbose) |
| | | hex_dump(tx, len, 32, "TX"); |
| | | |
| | | if (output_file) { |
| | | out_fd = open(output_file, O_WRONLY | O_CREAT | O_TRUNC, 0666); |
| | | if (out_fd < 0) |
| | | pabort("could not open output file"); |
| | | |
| | | ret = write(out_fd, rx, len); |
| | | if (ret != len) |
| | | pabort("not all bytes written to output file"); |
| | | |
| | | close(out_fd); |
| | | } |
| | | |
| | | if (verbose) |
| | | hex_dump(rx, len, 32, "RX"); |
| | | } |
| | | |
| | | static void print_usage(const char *prog) |
| | | { |
| | | printf("Usage: %s [-DsbdlHOLC3vpNR24SI]\n", prog); |
| | | puts(" -D --device device to use (default /dev/spidev1.1)\n" |
| | | " -s --speed max speed (Hz)\n" |
| | | " -d --delay delay (usec)\n" |
| | | " -b --bpw bits per word\n" |
| | | " -i --input input data from a file (e.g. \"test.bin\")\n" |
| | | " -o --output output data to a file (e.g. \"results.bin\")\n" |
| | | " -l --loop loopback\n" |
| | | " -H --cpha clock phase\n" |
| | | " -O --cpol clock polarity\n" |
| | | " -L --lsb least significant bit first\n" |
| | | " -C --cs-high chip select active high\n" |
| | | " -3 --3wire SI/SO signals shared\n" |
| | | " -v --verbose Verbose (show tx buffer)\n" |
| | | " -p Send data (e.g. \"1234\\xde\\xad\")\n" |
| | | " -N --no-cs no chip select\n" |
| | | " -R --ready slave pulls low to pause\n" |
| | | " -2 --dual dual transfer\n" |
| | | " -4 --quad quad transfer\n" |
| | | " -8 --octal octal transfer\n" |
| | | " -S --size transfer size\n" |
| | | " -I --iter iterations\n"); |
| | | exit(1); |
| | | } |
| | | |
| | | static void parse_opts(int argc, char *argv[]) |
| | | { |
| | | while (1) { |
| | | static const struct option lopts[] = { |
| | | { "device", 1, 0, 'D' }, |
| | | { "speed", 1, 0, 's' }, |
| | | { "delay", 1, 0, 'd' }, |
| | | { "bpw", 1, 0, 'b' }, |
| | | { "input", 1, 0, 'i' }, |
| | | { "output", 1, 0, 'o' }, |
| | | { "loop", 0, 0, 'l' }, |
| | | { "cpha", 0, 0, 'H' }, |
| | | { "cpol", 0, 0, 'O' }, |
| | | { "lsb", 0, 0, 'L' }, |
| | | { "cs-high", 0, 0, 'C' }, |
| | | { "3wire", 0, 0, '3' }, |
| | | { "no-cs", 0, 0, 'N' }, |
| | | { "ready", 0, 0, 'R' }, |
| | | { "dual", 0, 0, '2' }, |
| | | { "verbose", 0, 0, 'v' }, |
| | | { "quad", 0, 0, '4' }, |
| | | { "octal", 0, 0, '8' }, |
| | | { "size", 1, 0, 'S' }, |
| | | { "iter", 1, 0, 'I' }, |
| | | { NULL, 0, 0, 0 }, |
| | | }; |
| | | int c; |
| | | |
| | | c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3NR248p:vS:I:", |
| | | lopts, NULL); |
| | | |
| | | if (c == -1) |
| | | break; |
| | | |
| | | switch (c) { |
| | | case 'D': |
| | | device = optarg; |
| | | break; |
| | | case 's': |
| | | speed = atoi(optarg); |
| | | break; |
| | | case 'd': |
| | | delay = atoi(optarg); |
| | | break; |
| | | case 'b': |
| | | bits = atoi(optarg); |
| | | break; |
| | | case 'i': |
| | | input_file = optarg; |
| | | break; |
| | | case 'o': |
| | | output_file = optarg; |
| | | break; |
| | | case 'l': |
| | | mode |= SPI_LOOP; |
| | | break; |
| | | case 'H': |
| | | mode |= SPI_CPHA; |
| | | break; |
| | | case 'O': |
| | | mode |= SPI_CPOL; |
| | | break; |
| | | case 'L': |
| | | mode |= SPI_LSB_FIRST; |
| | | break; |
| | | case 'C': |
| | | mode |= SPI_CS_HIGH; |
| | | break; |
| | | case '3': |
| | | mode |= SPI_3WIRE; |
| | | break; |
| | | case 'N': |
| | | mode |= SPI_NO_CS; |
| | | break; |
| | | case 'v': |
| | | verbose = 1; |
| | | break; |
| | | case 'R': |
| | | mode |= SPI_READY; |
| | | break; |
| | | case 'p': |
| | | input_tx = optarg; |
| | | break; |
| | | case '2': |
| | | mode |= SPI_TX_DUAL; |
| | | break; |
| | | case '4': |
| | | mode |= SPI_TX_QUAD; |
| | | break; |
| | | case '8': |
| | | mode |= SPI_TX_OCTAL; |
| | | break; |
| | | case 'S': |
| | | transfer_size = atoi(optarg); |
| | | break; |
| | | case 'I': |
| | | iterations = atoi(optarg); |
| | | break; |
| | | default: |
| | | print_usage(argv[0]); |
| | | } |
| | | } |
| | | if (mode & SPI_LOOP) { |
| | | if (mode & SPI_TX_DUAL) |
| | | mode |= SPI_RX_DUAL; |
| | | if (mode & SPI_TX_QUAD) |
| | | mode |= SPI_RX_QUAD; |
| | | if (mode & SPI_TX_OCTAL) |
| | | mode |= SPI_RX_OCTAL; |
| | | } |
| | | } |
| | | |
| | | static void transfer_escaped_string(int fd, char *str) |
| | | { |
| | | size_t size = strlen(str); |
| | | uint8_t *tx; |
| | | uint8_t *rx; |
| | | |
| | | tx = malloc(size); |
| | | if (!tx) |
| | | pabort("can't allocate tx buffer"); |
| | | |
| | | rx = malloc(size); |
| | | if (!rx) |
| | | pabort("can't allocate rx buffer"); |
| | | |
| | | size = unescape((char *)tx, str, size); |
| | | transfer(fd, tx, rx, size); |
| | | free(rx); |
| | | free(tx); |
| | | } |
| | | |
| | | static void transfer_file(int fd, char *filename) |
| | | { |
| | | ssize_t bytes; |
| | | struct stat sb; |
| | | int tx_fd; |
| | | uint8_t *tx; |
| | | uint8_t *rx; |
| | | |
| | | if (stat(filename, &sb) == -1) |
| | | pabort("can't stat input file"); |
| | | |
| | | tx_fd = open(filename, O_RDONLY); |
| | | if (tx_fd < 0) |
| | | pabort("can't open input file"); |
| | | |
| | | tx = malloc(sb.st_size); |
| | | if (!tx) |
| | | pabort("can't allocate tx buffer"); |
| | | |
| | | rx = malloc(sb.st_size); |
| | | if (!rx) |
| | | pabort("can't allocate rx buffer"); |
| | | |
| | | bytes = read(tx_fd, tx, sb.st_size); |
| | | if (bytes != sb.st_size) |
| | | pabort("failed to read input file"); |
| | | |
| | | transfer(fd, tx, rx, sb.st_size); |
| | | free(rx); |
| | | free(tx); |
| | | close(tx_fd); |
| | | } |
| | | |
| | | static uint64_t _read_count; |
| | | static uint64_t _write_count; |
| | | |
| | | static void show_transfer_rate(void) |
| | | { |
| | | static uint64_t prev_read_count, prev_write_count; |
| | | double rx_rate, tx_rate; |
| | | |
| | | rx_rate = ((_read_count - prev_read_count) * 8) / (interval*1000.0); |
| | | tx_rate = ((_write_count - prev_write_count) * 8) / (interval*1000.0); |
| | | |
| | | printf("rate: tx %.1fkbps, rx %.1fkbps\n", rx_rate, tx_rate); |
| | | |
| | | prev_read_count = _read_count; |
| | | prev_write_count = _write_count; |
| | | } |
| | | |
| | | static void transfer_buf(int fd, int len) |
| | | { |
| | | uint8_t *tx; |
| | | uint8_t *rx; |
| | | int i; |
| | | |
| | | tx = malloc(len); |
| | | if (!tx) |
| | | pabort("can't allocate tx buffer"); |
| | | for (i = 0; i < len; i++) |
| | | tx[i] = random(); |
| | | |
| | | rx = malloc(len); |
| | | if (!rx) |
| | | pabort("can't allocate rx buffer"); |
| | | |
| | | transfer(fd, tx, rx, len); |
| | | |
| | | _write_count += len; |
| | | _read_count += len; |
| | | |
| | | if (mode & SPI_LOOP) { |
| | | if (memcmp(tx, rx, len)) { |
| | | fprintf(stderr, "transfer error !\n"); |
| | | hex_dump(tx, len, 32, "TX"); |
| | | hex_dump(rx, len, 32, "RX"); |
| | | exit(1); |
| | | } |
| | | } |
| | | |
| | | free(rx); |
| | | free(tx); |
| | | } |
| | | |
| | | int main(int argc, char *argv[]) |
| | | { |
| | | int ret = 0; |
| | | int fd; |
| | | |
| | | parse_opts(argc, argv); |
| | | |
| | | if (input_tx && input_file) |
| | | pabort("only one of -p and --input may be selected"); |
| | | |
| | | fd = open(device, O_RDWR); |
| | | if (fd < 0) |
| | | pabort("can't open device"); |
| | | |
| | | /* |
| | | * spi mode |
| | | */ |
| | | ret = ioctl(fd, SPI_IOC_WR_MODE32, &mode); |
| | | if (ret == -1) |
| | | pabort("can't set spi mode"); |
| | | |
| | | ret = ioctl(fd, SPI_IOC_RD_MODE32, &mode); |
| | | if (ret == -1) |
| | | pabort("can't get spi mode"); |
| | | |
| | | /* |
| | | * bits per word |
| | | */ |
| | | ret = ioctl(fd, SPI_IOC_WR_BITS_PER_WORD, &bits); |
| | | if (ret == -1) |
| | | pabort("can't set bits per word"); |
| | | |
| | | ret = ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits); |
| | | if (ret == -1) |
| | | pabort("can't get bits per word"); |
| | | |
| | | /* |
| | | * max speed hz |
| | | */ |
| | | ret = ioctl(fd, SPI_IOC_WR_MAX_SPEED_HZ, &speed); |
| | | if (ret == -1) |
| | | pabort("can't set max speed hz"); |
| | | |
| | | ret = ioctl(fd, SPI_IOC_RD_MAX_SPEED_HZ, &speed); |
| | | if (ret == -1) |
| | | pabort("can't get max speed hz"); |
| | | |
| | | 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); |
| | | |
| | | if (input_tx) |
| | | transfer_escaped_string(fd, input_tx); |
| | | else if (input_file) |
| | | transfer_file(fd, input_file); |
| | | else if (transfer_size) { |
| | | struct timespec last_stat; |
| | | |
| | | clock_gettime(CLOCK_MONOTONIC, &last_stat); |
| | | |
| | | while (iterations-- > 0) { |
| | | struct timespec current; |
| | | |
| | | transfer_buf(fd, transfer_size); |
| | | |
| | | clock_gettime(CLOCK_MONOTONIC, ¤t); |
| | | if (current.tv_sec - last_stat.tv_sec > interval) { |
| | | show_transfer_rate(); |
| | | last_stat = current; |
| | | } |
| | | } |
| | | printf("total: tx %.1fKB, rx %.1fKB\n", |
| | | _write_count/1024.0, _read_count/1024.0); |
| | | } else |
| | | transfer(fd, default_tx, default_rx, sizeof(default_tx)); |
| | | |
| | | close(fd); |
| | | |
| | | return ret; |
| | | } |