Commit Graph

8 Commits

Author SHA1 Message Date
Ivan Grokhotkov
af6cfc5552 docs, examples: use rtc_gpio_isolate to disconnect GPIO12
This is needed to reduce deep sleep current on ESP32-WROVER modules.

Ref TW18165.
2018-02-11 13:28:47 +08:00
Ivan Grokhotkov
ca751648fa ulp: document the need to wait for RTC to be ready for wakeup 2017-12-11 12:11:46 +08:00
Ivan Grokhotkov
dec4a868d0 examples/ulp: disable pullup on GPIO15 to reduce current
Also increase sampling frequency in ulp_adc example and update READMEs.

Fixes https://github.com/espressif/esp-idf/issues/1108
2017-11-03 18:56:31 +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
Ivan Grokhotkov
d2acf1ce77 sleep: add light sleep, factor out APIs common for deep/light sleep 2017-09-01 10:36:14 +08:00
Ivan Grokhotkov
7abd9bc023 ULP: remove deprecated cycle_sel field from ADC instruction
Cycle_sel field was never used in binutils and was always set to zero.
This change removes it from documentation and examples.

Needs ULP binutils with this change:
https://github.com/espressif/binutils-esp32ulp/commit/af79434
2017-05-31 18:22:48 +08:00
Ivan Grokhotkov
3c583a7655 sdkconfig: set CONFIG_ESP32_DEEP_SLEEP_WAKEUP_DELAY=2000 by default
To increase the chances that the examples work out of the box, this
change is raising the default deep sleep wakeup delay to 1ms.
If GPIO15 is low at startup, ROM code takes less time to execute
(because no logging is performed), so more time may be needed to allow
flash chip to become ready.
2017-05-25 10:51:39 +08:00
Ivan Grokhotkov
98e15df7f6 examples: add ULP ADC example 2017-05-16 13:15:02 +08:00