spi: spidev_test: add option to continuously transfer data
Add option to send+recv <size> bytes with <iter> iterations and show the transfer rate every 5 seconds. Example: rate: tx 4235.2kbps, rx 4235.2kbps total: tx 4882.8KB, rx 4882.8KB Signed-off-by: Frode Isaksen <fisaksen@baylibre.com> Signed-off-by: Mark Brown <broonie@kernel.org>zero-colors
Frode Isaksen
Mark Brown
parent
fafd679407
commit
9006a7b322
|
|
@ -18,6 +18,7 @@
|
|||
#include <string.h>
|
||||
#include <getopt.h>
|
||||
#include <fcntl.h>
|
||||
#include <time.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <linux/ioctl.h>
|
||||
#include <sys/stat.h>
|
||||
|
|
@ -40,6 +41,9 @@ 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 */
|
||||
|
||||
uint8_t default_tx[] = {
|
||||
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
||||
|
|
@ -156,13 +160,13 @@ static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len)
|
|||
close(out_fd);
|
||||
}
|
||||
|
||||
if (verbose || !output_file)
|
||||
if (verbose)
|
||||
hex_dump(rx, len, 32, "RX");
|
||||
}
|
||||
|
||||
static void print_usage(const char *prog)
|
||||
{
|
||||
printf("Usage: %s [-DsbdlHOLC3]\n", 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"
|
||||
|
|
@ -180,7 +184,9 @@ static void print_usage(const char *prog)
|
|||
" -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");
|
||||
" -4 --quad quad transfer\n"
|
||||
" -S --size transfer size\n"
|
||||
" -I --iter iterations\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
|
|
@ -205,11 +211,13 @@ static void parse_opts(int argc, char *argv[])
|
|||
{ "dual", 0, 0, '2' },
|
||||
{ "verbose", 0, 0, 'v' },
|
||||
{ "quad", 0, 0, '4' },
|
||||
{ "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:lHOLC3NR24p:v",
|
||||
c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3NR24p:vS:I:",
|
||||
lopts, NULL);
|
||||
|
||||
if (c == -1)
|
||||
|
|
@ -270,6 +278,12 @@ static void parse_opts(int argc, char *argv[])
|
|||
case '4':
|
||||
mode |= SPI_TX_QUAD;
|
||||
break;
|
||||
case 'S':
|
||||
transfer_size = atoi(optarg);
|
||||
break;
|
||||
case 'I':
|
||||
iterations = atoi(optarg);
|
||||
break;
|
||||
default:
|
||||
print_usage(argv[0]);
|
||||
break;
|
||||
|
|
@ -336,6 +350,57 @@ static void transfer_file(int fd, char *filename)
|
|||
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;
|
||||
|
|
@ -391,7 +456,25 @@ int main(int argc, char *argv[])
|
|||
transfer_escaped_string(fd, input_tx);
|
||||
else if (input_file)
|
||||
transfer_file(fd, input_file);
|
||||
else
|
||||
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);
|
||||
|
|
|
|||
Loading…
Reference in New Issue