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esp32_eurorack_generic
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Refactor: move read loop to its own task function 

Refs: #4
adc-init
rkcf 2023-02-21 07:15:46 -06:00
parent 63033f73f4
commit 0aa43c5f5b
1 changed files with 34 additions and 22 deletions
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56
src/main/esp32_eurorack_generic.c
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@ -31,6 +31,38 @@ static TaskHandle_t adc_task_handle;
static const char *TAG = "EERG";
/* ADC continuous read task */
static void adc_read_task(void *pvParameter)
{
ESP_LOGI(TAG, "Starting adc read task");
esp_err_t adc_ret;
uint32_t ret_num = 0;
uint8_t result[ADC_READ_LEN] = {0};
/* Fill result with 0xcc */
memset(result, 0xcc, ADC_READ_LEN);
/* Wait here until notified that the conversion is done */
ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
while (1) {
/* Perform a read */
adc_ret = adc_continuous_read(adc_handle, result, ADC_READ_LEN, &ret_num, 0);
if (adc_ret == ESP_OK) {
for (int i = 0; i < ret_num; i+= SOC_ADC_DIGI_RESULT_BYTES) {
/* Grab the data and channel number */
adc_digi_output_data_t *p_data = (void*)&result[i];
uint32_t chan = ((p_data)->type2.channel);
uint32_t data = ((p_data)->type2.data);
/* Check channel number to see if data is bogus */
if (chan < SOC_ADC_CHANNEL_NUM(ADC_UNIT_1)) {
ESP_LOGI("adc", "ADC_1_%"PRIu32" value: %"PRIx32, chan, data);
} else {
ESP_LOGW("adc", "Invalid data from ADC_1_%"PRIu32, chan);
}
}
}
}
}
/* ADC conversion finished callback */
static bool IRAM_ATTR adc_conv_cb(adc_continuous_handle_t handle, const adc_continuous_evt_data_t *edata, void *user_data)
@ -109,32 +141,12 @@ void app_main(void)
/* Initialize continuous driver */
adc_cont_init();
/* Start the continuous driver */
adc_task_handle = xTaskGetCurrentTaskHandle();
ESP_ERROR_CHECK(adc_continuous_start(adc_handle));
esp_err_t adc_ret;
uint32_t ret_num = 0;
uint8_t result[ADC_READ_LEN] = {0};
/* Fill result with 0xcc */
memset(result, 0xcc, ADC_READ_LEN);
xTaskCreate(adc_read_task, "adc read", 2048, NULL, 0, &adc_task_handle);
while (1) {
/* Perform a read */
adc_ret = adc_continuous_read(adc_handle, result, ADC_READ_LEN, &ret_num, 0);
if (adc_ret == ESP_OK) {
for (int i = 0; i < ret_num; i+= SOC_ADC_DIGI_RESULT_BYTES) {
/* Grab the data and channel number */
adc_digi_output_data_t *p_data = (void*)&result[i];
uint32_t chan = ((p_data)->type2.channel);
uint32_t data = ((p_data)->type2.data);
/* Check channel number to see if data is bogus */
if (chan < SOC_ADC_CHANNEL_NUM(ADC_UNIT_1)) {
ESP_LOGI("adc", "ADC_1_%"PRIu32" value: %"PRIx32, chan, data);
} else {
ESP_LOGW("adc", "Invalid data from ADC_1_%"PRIu32, chan);
}
}
}
}
/* Cleanup ADC */