RIOT-OS/RIOT
RIOT-OS/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-01-18 12:52:44 +01:00
Code Releases Activity

tests/driver_dac_dds: Report underruns

Browse Source
This commit is contained in:
chrysn 2020-12-11 10:13:36 +01:00
parent 057de665f1
commit 2bfb40c2ae
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
tests/driver_dac_dds/main.c
View File

@ -178,6 +178,9 @@ static void play_function(uint16_t period, uint32_t samples, sample_gen_t fun)
/* only work with whole wave periods */
uint16_t len_aligned = DAC_BUF_SIZE - DAC_BUF_SIZE % period;
/* One underrun indication is expected (for the first sample) */
int underruns = -1;
/* 16 bit samples doubles data rate */
if (res_16b) {
samples *= 2;
@ -193,11 +196,15 @@ static void play_function(uint16_t period, uint32_t samples, sample_gen_t fun)
size_t len = min(samples, len_aligned);
samples -= len;
dac_dds_play(DAC_DDS_CHAN, buf, len);
underruns += !dac_dds_play(DAC_DDS_CHAN, buf, len);
/* wait for buffer flip */
mutex_lock(&lock);
}
if (underruns != 0) {
printf("During playback, %d underruns occurred.\n", underruns);
}
}
#if IS_USED(ENABLE_GREETING)