spi: spidev_test: accept input from a file
Add input file support to facilitate testing larger data. Signed-off-by: Joshua Clayton <stillcompiling@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Родитель
5c437a401b
Коммит
7af475a5b5
|
@ -19,6 +19,7 @@
|
|||
#include <getopt.h>
|
||||
#include <fcntl.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/stat.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/spi/spidev.h>
|
||||
|
||||
|
@ -33,6 +34,7 @@ static void pabort(const char *s)
|
|||
static const char *device = "/dev/spidev1.1";
|
||||
static uint32_t mode;
|
||||
static uint8_t bits = 8;
|
||||
static char *input_file;
|
||||
static uint32_t speed = 500000;
|
||||
static uint16_t delay;
|
||||
static int verbose;
|
||||
|
@ -144,6 +146,7 @@ static void print_usage(const char *prog)
|
|||
" -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"
|
||||
" -l --loop loopback\n"
|
||||
" -H --cpha clock phase\n"
|
||||
" -O --cpol clock polarity\n"
|
||||
|
@ -167,6 +170,7 @@ static void parse_opts(int argc, char *argv[])
|
|||
{ "speed", 1, 0, 's' },
|
||||
{ "delay", 1, 0, 'd' },
|
||||
{ "bpw", 1, 0, 'b' },
|
||||
{ "input", 1, 0, 'i' },
|
||||
{ "loop", 0, 0, 'l' },
|
||||
{ "cpha", 0, 0, 'H' },
|
||||
{ "cpol", 0, 0, 'O' },
|
||||
|
@ -182,7 +186,8 @@ static void parse_opts(int argc, char *argv[])
|
|||
};
|
||||
int c;
|
||||
|
||||
c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR24p:v", lopts, NULL);
|
||||
c = getopt_long(argc, argv, "D:s:d:b:i:lHOLC3NR24p:v",
|
||||
lopts, NULL);
|
||||
|
||||
if (c == -1)
|
||||
break;
|
||||
|
@ -200,6 +205,9 @@ static void parse_opts(int argc, char *argv[])
|
|||
case 'b':
|
||||
bits = atoi(optarg);
|
||||
break;
|
||||
case 'i':
|
||||
input_file = optarg;
|
||||
break;
|
||||
case 'l':
|
||||
mode |= SPI_LOOP;
|
||||
break;
|
||||
|
@ -269,6 +277,39 @@ static void transfer_escaped_string(int fd, char *str)
|
|||
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 (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);
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
int ret = 0;
|
||||
|
@ -317,8 +358,13 @@ int main(int argc, char *argv[])
|
|||
printf("bits per word: %d\n", bits);
|
||||
printf("max speed: %d Hz (%d KHz)\n", speed, speed/1000);
|
||||
|
||||
if (input_tx && input_file)
|
||||
pabort("only one of -p and --input may be selected");
|
||||
|
||||
if (input_tx)
|
||||
transfer_escaped_string(fd, input_tx);
|
||||
else if (input_file)
|
||||
transfer_file(fd, input_file);
|
||||
else
|
||||
transfer(fd, default_tx, default_rx, sizeof(default_tx));
|
||||
|
||||
|
|
Загрузка…
Ссылка в новой задаче