esp-idf

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Commit Graph

Author	SHA1	Message	Date
Darian Leung	0c9e2c0fba	esp_adc_cal/Remove lookup table This commit removes the lookup table mode due to inferior performance when compared to linear mode under attenuation 0, 1 and 2. However small portions of the lookup table are kept for the higher voltages of atten 3 (above ADC reading 2880). That voltage range in atten 3 has non linear characteristics making the LUT performan better than linear mode.	2018-02-22 20:01:41 +08:00
Wangjialin	451f69cc2e	driver(i2s): fix broken i2s adc mode 1. Move i2s reset code from i2s_stop to i2s_start. 2. add RTC API to set sw mode for ADC 3. add description for adc_power_always_on() 4. add lock for i2s dma and RTC ADC functions. 5. add ADC read task in example reported from bbs: https://esp32.com/viewtopic.php?f=13&t=3490&p=17522#p17522 reported from github: https://github.com/espressif/esp-idf/issues/1333	2018-02-07 17:17:20 +08:00
Wangjialin	2fceec4d85	feature(I2S-ADC): add ADC mode for I2S. 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	2017-09-14 13:24:08 +08:00

Author

SHA1

Message

Date

Darian Leung

0c9e2c0fba

esp_adc_cal/Remove lookup table

This commit removes the lookup table mode due to inferior performance when compared
to linear mode under attenuation 0, 1 and 2. However small portions of the lookup table
are kept for the higher voltages of atten 3 (above ADC reading 2880). That voltage range
in atten 3 has non linear characteristics making the LUT performan better than linear mode.

2018-02-22 20:01:41 +08:00

Wangjialin

451f69cc2e

driver(i2s): fix broken i2s adc mode

1. Move i2s reset code from i2s_stop to i2s_start.
2. add RTC API to set sw mode for ADC
3. add description for adc_power_always_on()
4. add lock for i2s dma and RTC ADC functions.
5. add ADC read task in example

reported from bbs:  https://esp32.com/viewtopic.php?f=13&t=3490&p=17522#p17522
reported from github: https://github.com/espressif/esp-idf/issues/1333

2018-02-07 17:17:20 +08:00

Wangjialin

2fceec4d85

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

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

2017-09-14 13:24:08 +08:00

3 Commits