From e0160dee003a049267e58975b8c2585a63199d4a Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Thu, 14 Apr 2022 11:21:28 +0800
Subject: [PATCH] add i2c_sht20.c spidev_test.c
---
booster/test/makefile | 8
booster/test/i2c_sht20.c | 257 ++++++++++++++++++
booster/test/spidev_test.c | 520 +++++++++++++++++++++++++++++++++++++
3 files changed, 781 insertions(+), 4 deletions(-)
diff --git a/booster/test/i2c_sht20.c b/booster/test/i2c_sht20.c
new file mode 100644
index 0000000..b87c0cb
--- /dev/null
+++ b/booster/test/i2c_sht20.c
@@ -0,0 +1,257 @@
+/*********************************************************************************
+ * 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;
+}
+
+
diff --git a/booster/test/makefile b/booster/test/makefile
index 1a3718f..28a476f 100644
--- a/booster/test/makefile
+++ b/booster/test/makefile
@@ -5,7 +5,7 @@
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=%)
@@ -15,14 +15,14 @@
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:
diff --git a/booster/test/spidev_test.c b/booster/test/spidev_test.c
new file mode 100644
index 0000000..481b414
--- /dev/null
+++ b/booster/test/spidev_test.c
@@ -0,0 +1,520 @@
+// 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;
+}
--
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