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testing smi device

bug_fixes_integration_tx
meexmachina 2021-08-10 16:06:39 +03:00
rodzic 6079cd4855
commit 31958d6a5c
1 zmienionych plików z 77 dodań i 60 usunięć
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137
software/kernel/test.c
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@ -8,12 +8,8 @@
#include <sys/stat.h>
#include <unistd.h>
static void fail(const char *msg) {
perror(msg);
exit(1);
}
static void print_smi_settings(struct smi_settings *settings) {
static void print_smi_settings(struct smi_settings *settings)
{
printf("width: %d\n", settings->data_width);
printf("pack: %c\n", settings->pack_data ? 'Y' : 'N');
printf("read setup: %d, strobe: %d, hold: %d, pace: %d\n", settings->read_setup_time, settings->read_strobe_time, settings->read_hold_time, settings->read_pace_time);
@ -23,65 +19,86 @@ static void print_smi_settings(struct smi_settings *settings) {
printf("dma panic threshold read: %d, write: %d\n", settings->dma_panic_read_thresh, settings->dma_panic_write_thresh);
}
int main(int argc, char **argv) {
int count = 8;
int opt;
int fd = open("/dev/smi", O_RDWR);
if (fd < 0) fail("cant open");
struct smi_settings settings;
int ret = ioctl(fd, BCM2835_SMI_IOC_GET_SETTINGS, &settings);
if (ret != 0) fail("ioctl 1");
settings.read_setup_time = 10;
settings.read_strobe_time = 20;
settings.read_hold_time = 40;
settings.read_pace_time = 80;
bool writeMode = false;
static void setup_settings (struct smi_settings *settings)
{
settings->read_setup_time = 1;
settings->read_strobe_time = 1;
settings->read_hold_time = 1;
settings->read_pace_time = 1;
settings->write_setup_time = 1;
settings->write_hold_time = 1;
settings->write_pace_time = 1;
settings->write_strobe_time = 1;
settings->data_width = SMI_WIDTH_8BIT;
settings->dma_enable = 1;
settings->pack_data = 1;
settings->dma_passthrough_enable = 1;
}
while ((opt = getopt(argc, argv, "b:e:s:h:p:wE:S:H:P:")) != -1) {
switch (opt) {
case 'b':
count = atoi(optarg);
break;
case 'e':
settings.read_setup_time = atoi(optarg);
break;
case 's':
settings.read_strobe_time = atoi(optarg);
break;
case 'h':
settings.read_hold_time = atoi(optarg);
break;
case 'p':
settings.read_pace_time = atoi(optarg);
break;
case 'E':
settings.write_setup_time = atoi(optarg);
break;
case 'S':
settings.write_strobe_time = atoi(optarg);
break;
case 'H':
settings.write_hold_time = atoi(optarg);
break;
case 'P':
settings.write_pace_time = atoi(optarg);
break;
case 'w':
writeMode = true;
break;
}
int main(int argc, char **argv)
{
int fd = open("/dev/smi", O_RDWR);
if (fd < 0)
{
perror("cant open");
exit(1);
}
struct smi_settings settings;
int ret = ioctl(fd, BCM2835_SMI_IOC_GET_SETTINGS, &settings);
if (ret != 0)
{
perror("ioctl 1");
close (fd);
exit(1);
}
printf("Current settings:\n");
print_smi_settings(&settings);
setup_settings(&settings);
ret = ioctl(fd, BCM2835_SMI_IOC_WRITE_SETTINGS, &settings);
if (ret != 0) fail("ioctl 2");
if (ret != 0)
{
perror("ioctl 1");
close (fd);
exit(1);
}
printf("\n\nNEW settings:\n");
print_smi_settings(&settings);
uint16_t buffer[count];
if (writeMode) {
for (int i=0; i<count; i++) buffer[i] = i;
write(fd, buffer, count*2);
} else {
read(fd, buffer, count*2);
for (int i=0; i<count; i++) printf("%02x ", buffer[i]);
bool writeMode = false;
// writeMode = true;
int count = 512;
uint32_t buffer[512]; // 512 samples
if (writeMode)
{
for (int i=0; i<count; i++)
{
buffer[i] = i;
}
write(fd, buffer, count*sizeof(uint32_t));
}
else
{
read(fd, buffer, count*sizeof(uint32_t));
printf("\n\nread words:\n");
for (int i=0; i<count; i++)
{
printf("%02x ", buffer[i]);
}
puts("\n");
}
close (fd);
return 0;
}