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

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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
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4
examples/system/ulp_adc/main/ulp_adc_example_main.c
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@@ -63,8 +63,8 @@ static void init_ulp_program()
/* Configure ADC channel */
/* Note: when changing channel here, also change 'adc_channel' constant
in adc.S */
adc1_config_channel_atten(ADC1_CHANNEL_6, ADC_ATTEN_11db);
adc1_config_width(ADC_WIDTH_12Bit);
adc1_config_channel_atten(ADC1_CHANNEL_6, ADC_ATTEN_DB_11);
adc1_config_width(ADC_WIDTH_BIT_12);
adc1_ulp_enable();
/* Set low and high thresholds, approx. 1.35V - 1.75V*/