bool RCTest::dsmTest(const char *filepath, unsigned expected_chancount, unsigned expected_dropcount, unsigned chan0)
{
FILE *fp;
fp = fopen(filepath, "rt");
ut_test(fp != nullptr);
//PX4_INFO("loading data from: %s", filepath);
float f;
unsigned x;
int ret;
// Trash the first 20 lines
for (unsigned i = 0; i < 20; i++) {
char buf[200];
(void)fgets(buf, sizeof(buf), fp);
}
// Init the parser
uint8_t frame[30];
uint16_t rc_values[18];
uint16_t num_values;
bool dsm_11_bit;
unsigned dsm_frame_drops = 0;
uint16_t max_channels = sizeof(rc_values) / sizeof(rc_values[0]);
int rate_limiter = 0;
unsigned last_drop = 0;
dsm_proto_init();
while (EOF != (ret = fscanf(fp, "%f,%x,,", &f, &x))) {
if (ret <= 0) {
fclose(fp);
ut_test(ret > 0);
}
frame[0] = x;
unsigned len = 1;
// Pipe the data into the parser
bool result = dsm_parse(f * 1e6f, &frame[0], len, rc_values, &num_values,
&dsm_11_bit, &dsm_frame_drops, max_channels);
if (result) {
ut_test(num_values == expected_chancount);
ut_test(abs((int)chan0 - (int)rc_values[0]) < 30);
//PX4_INFO("decoded packet with %d channels and %s encoding:", num_values, (dsm_11_bit) ? "11 bit" : "10 bit");
for (unsigned i = 0; i < num_values; i++) {
//PX4_INFO("chan #%u:\t%d", i, (int)rc_values[i]);
}
}
if (last_drop != (dsm_frame_drops)) {
PX4_INFO("frame dropped, now #%d", (dsm_frame_drops));
last_drop = dsm_frame_drops;
}
rate_limiter++;
}
fclose(fp);
ut_test(ret == EOF);
PX4_INFO("drop: %d", (int)last_drop);
ut_test(last_drop == expected_dropcount);
return true;
}
bool RCTest::dsmTest(void)
{
const char *filepath = TEST_DATA_PATH "dsm_x_data.txt";
FILE *fp;
fp = fopen(filepath, "rt");
ut_test(fp != nullptr);
//warnx("loading data from: %s", filepath);
float f;
unsigned x;
int ret;
// Trash the first 20 lines
for (unsigned i = 0; i < 20; i++) {
char buf[200];
(void)fgets(buf, sizeof(buf), fp);
}
// Init the parser
uint8_t frame[20];
uint16_t rc_values[18];
uint16_t num_values;
bool dsm_11_bit;
unsigned dsm_frame_drops = 0;
uint16_t max_channels = sizeof(rc_values) / sizeof(rc_values[0]);
int rate_limiter = 0;
unsigned last_drop = 0;
while (EOF != (ret = fscanf(fp, "%f,%x,,", &f, &x))) {
ut_test(ret > 0);
frame[0] = x;
unsigned len = 1;
// Pipe the data into the parser
bool result = dsm_parse(f * 1e6f, &frame[0], len, rc_values, &num_values,
&dsm_11_bit, &dsm_frame_drops, max_channels);
if (result) {
//warnx("decoded packet with %d channels and %s encoding:", num_values, (dsm_11_bit) ? "11 bit" : "10 bit");
for (unsigned i = 0; i < num_values; i++) {
//printf("chan #%u:\t%d\n", i, (int)rc_values[i]);
}
}
if (last_drop != (dsm_frame_drops)) {
//warnx("frame dropped, now #%d", (dsm_frame_drops));
last_drop = dsm_frame_drops;
}
rate_limiter++;
}
ut_test(ret == EOF);
return true;
}
