alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-08-09 04:25:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

feature(I2S-ADC): add ADC mode for I2S.

Browse Source 
1. Support built-in ADC for I2S.
2. Modify code of ADC, made no change to the original APIs.
3. Add APIs in I2S:
esp_err_t i2s_set_adc_mode(adc_unit_t adc_unit, adc1_channel_t adc_channel);
4. Add I2S ADC/DAC example code.
5. add old-fashion definition to make it more compatible
6. replase spi_flash_ APIs with esp_partition_ APIs
7. add example of generating audio table from wav
8. change example sound
This commit is contained in:
Wangjialin
2017-08-23 23:12:56 +08:00
parent b2adaf2a4c
commit 2fceec4d85
24 changed files with 6242 additions and 162 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
examples/peripherals/adc/main/adc1_example_main.c
View File

@@ -28,9 +28,9 @@ void app_main(void)
#ifndef V_REF_TO_GPIO
//Init ADC and Characteristics
esp_adc_cal_characteristics_t characteristics;
adc1_config_width(ADC_WIDTH_12Bit);
adc1_config_channel_atten(ADC1_TEST_CHANNEL, ADC_ATTEN_0db);
esp_adc_cal_get_characteristics(V_REF, ADC_ATTEN_0db, ADC_WIDTH_12Bit, &characteristics);
adc1_config_width(ADC_WIDTH_BIT_12);
adc1_config_channel_atten(ADC1_TEST_CHANNEL, ADC_ATTEN_DB_0);
esp_adc_cal_get_characteristics(V_REF, ADC_ATTEN_DB_0, ADC_WIDTH_BIT_12, &characteristics);
uint32_t voltage;
while(1){
voltage = adc1_to_voltage(ADC1_TEST_CHANNEL, &characteristics);