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Commit 983b2788 authored by Joshua Clayton's avatar Joshua Clayton Committed by Mark Brown
Browse files

spi: spidev_test: output to a file 



For testing of larger data transfers, output unmodified data
directly to a file.

Signed-off-by: default avatarJoshua Clayton <stillcompiling@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 7af475a5

tools/spi/spidev_test.c

+23 −3
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ 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;
@@ -105,7 +106,7 @@ static int unescape(char *_dst, char *_src, size_t len) 
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,
@@ -136,6 +137,20 @@ static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len) 


	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 utput file");



		close(out_fd);

	}



	if (verbose || !output_file)

		hex_dump(rx, len, 32, "RX");

}
@@ -147,6 +162,7 @@ static void print_usage(const char *prog) 
	     "  -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"
@@ -171,6 +187,7 @@ static void parse_opts(int argc, char *argv[]) 
			{ "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' },
@@ -186,7 +203,7 @@ static void parse_opts(int argc, char *argv[]) 
		};

		int c;



		c = getopt_long(argc, argv, "D:s:d:b:i:lHOLC3NR24p:v",

		c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3NR24p:v",

				lopts, NULL);



		if (c == -1)
@@ -208,6 +225,9 @@ static void parse_opts(int argc, char *argv[]) 
		case 'i':

			input_file = optarg;

			break;

		case 'o':

			output_file = optarg;

			break;

		case 'l':

			mode |= SPI_LOOP;

			break;