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adc_mic: add nr of samples argument

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This commit is contained in:
Thomas Farstrike
2026-02-16 14:20:12 +01:00
parent d256c54394
commit 1b82fb2d09
1 changed files with 8 additions and 5 deletions
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c_mpos/src/adc_mic.c
+8 -5
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@@ -12,7 +12,10 @@
#define ADC_MIC_DEBUG_PRINT(...) mp_printf(&mp_plat_print, __VA_ARGS__)
static mp_obj_t adc_mic_read(void) {
static mp_obj_t adc_mic_read(mp_obj_t chunk_samples_obj) {
// Extract chunk_samples from argument
size_t chunk_samples = mp_obj_get_int(chunk_samples_obj);
ADC_MIC_DEBUG_PRINT("Starting adc_mic_read...\n");
ADC_MIC_DEBUG_PRINT("CONFIG_ADC_MIC_TASK_CORE: %d\n", CONFIG_ADC_MIC_TASK_CORE);
@@ -66,7 +69,6 @@ static mp_obj_t adc_mic_read(void) {
// ────────────────────────────────────────────────
// Small reusable buffer + tracking variables
// ────────────────────────────────────────────────
const size_t chunk_samples = 10240;
const size_t buf_size = chunk_samples * sizeof(int16_t);
int16_t *audio_buffer = heap_caps_malloc(buf_size, MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
//int16_t *audio_buffer = heap_caps_thread.start_new_thread(testit, ())_malloc_prefer(buf_size, MALLOC_CAP_DEFAULT | MALLOC_CAP_SPIRAM, MALLOC_CAP_DEFAULT);
@@ -78,7 +80,8 @@ static mp_obj_t adc_mic_read(void) {
}
// How many chunks to read (adjust as needed)
const int N = 5; // e.g. 5 × 10240 = ~3.2 seconds @ 16 kHz
const int N = 1; // e.g. 5 × 10240 = ~3.2 seconds @ 16 kHz
const int chunks_to_print = 0;
int16_t global_min = 32767;
int16_t global_max = -32768;
@@ -109,7 +112,7 @@ static mp_obj_t adc_mic_read(void) {
}
// Optional: print first few chunks for debug (comment out after testing)
if (chunk < 3) {
if (chunk < chunks_to_print) {
ADC_MIC_DEBUG_PRINT("Chunk %d first 16 samples:\n", chunk);
for (size_t i = 0; i < 16; i++) {
int16_t sample = audio_buffer[i];
@@ -143,7 +146,7 @@ static mp_obj_t adc_mic_read(void) {
return last_buf_obj ? last_buf_obj : mp_obj_new_bytes(NULL, 0);
}
MP_DEFINE_CONST_FUN_OBJ_0(adc_mic_read_obj, adc_mic_read);
MP_DEFINE_CONST_FUN_OBJ_1(adc_mic_read_obj, adc_mic_read);
static const mp_rom_map_elem_t adc_mic_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_adc_mic) },