djsundog/circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

samd: audio dma: enable/disable supervisor tick as needed

Browse Source
This commit is contained in:
Jeff Epler 2020-05-13 10:29:36 -05:00
parent 23ba58bbf5
commit adef45403b
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
ports/atmel-samd/audio_dma.c
View File

@ -31,6 +31,7 @@
#include "shared-bindings/audiocore/RawSample.h"
#include "shared-bindings/audiocore/WaveFile.h"
#include "supervisor/shared/tick.h"
#include "py/mpstate.h"
#include "py/runtime.h"
@ -60,6 +61,7 @@ void audio_dma_free_channel(uint8_t channel) {
assert(audio_dma_allocated[channel]);
audio_dma_disable_channel(channel);
audio_dma_allocated[channel] = false;
supervisor_disable_tick();
}
void audio_dma_disable_channel(uint8_t channel) {
@ -71,6 +73,7 @@ void audio_dma_disable_channel(uint8_t channel) {
void audio_dma_enable_channel(uint8_t channel) {
if (channel >= AUDIO_DMA_CHANNEL_COUNT)
return;
supervisor_enable_tick();
dma_enable_channel(channel);
}
@ -318,6 +321,9 @@ void audio_dma_reset(void) {
for (uint8_t i = 0; i < AUDIO_DMA_CHANNEL_COUNT; i++) {
audio_dma_state[i] = NULL;
audio_dma_pending[i] = false;
if (audio_dma_allocated[i]) {
supervisor_disable_tick();
}
audio_dma_allocated[i] = false;
audio_dma_disable_channel(i);
dma_descriptor(i)->BTCTRL.bit.VALID = false;