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ESP32: Fix xtal 32k not oscillate or oscillate too slowly issue

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ESP32 in revision0 and revision1 uses touchpad to provide
current to oscillate xtal 32k. But revision2 and revision3
do not need to do that.
Note: touchpad can not work and toupad/ULP wakeup sources
are not available when toupad provides current to xtal 32k
This commit is contained in:
chaijie
2020-09-18 17:23:28 +08:00
committed by Michael (XIAO Xufeng)
parent 23e8233506
commit 9100cd558e
10 changed files with 99 additions and 33 deletions
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2
examples/system/deep_sleep/main/deep_sleep_example_main.c
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@@ -155,7 +155,7 @@ void app_main(void)
#if CONFIG_IDF_TARGET_ESP32
// Initialize touch pad peripheral.
// The default fsm mode is software trigger mode.
touch_pad_init();
ESP_ERROR_CHECK(touch_pad_init());
// If use touch pad wake up, should set touch sensor FSM mode at 'TOUCH_FSM_MODE_TIMER'.
touch_pad_set_fsm_mode(TOUCH_FSM_MODE_TIMER);
// Set reference voltage for charging/discharging