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Merge branch 'bugfix/fix_touch_sensor_power_source_v4.2' into 'release/v4.2'

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touch_sensor: fix esp32s2 touch sensor default power source (Backport v4.2)

See merge request espressif/esp-idf!13485
This commit is contained in:
Michael (XIAO Xufeng)
2021-05-25 03:13:32 +00:00
parent d9ec7df393 2515cd72c1
commit d2715324e5
1 changed files with 4 additions and 3 deletions
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7
components/soc/src/esp32s2/touch_sensor_hal.c
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@ -26,6 +26,10 @@ void touch_hal_init(void)
touch_ll_clear_trigger_status_mask();
touch_ll_set_meas_times(TOUCH_PAD_MEASURE_CYCLE_DEFAULT);
touch_ll_set_sleep_time(TOUCH_PAD_SLEEP_CYCLE_DEFAULT);
/* Configure the touch-sensor power domain into self-bias since bandgap-bias
* level is different under sleep-mode compared to running-mode. self-bias is
* always on after chip startup. */
touch_ll_sleep_low_power(true);
touch_ll_set_voltage_high(TOUCH_PAD_HIGH_VOLTAGE_THRESHOLD);
touch_ll_set_voltage_low(TOUCH_PAD_LOW_VOLTAGE_THRESHOLD);
touch_ll_set_voltage_attenuation(TOUCH_PAD_ATTEN_VOLTAGE_THRESHOLD);
@ -142,9 +146,6 @@ void touch_hal_sleep_channel_enable(touch_pad_t pad_num, bool enable)
if (enable) {
touch_ll_sleep_set_channel_num(pad_num);
touch_ll_sleep_set_threshold(SOC_TOUCH_PAD_THRESHOLD_MAX);
/* Default change touch dbias to self-dbias to save power.
Measuring the sleep pad threshold after `sleep_channel_set_config`. */
touch_ll_sleep_low_power(true);
touch_ll_sleep_reset_benchmark();
} else {
touch_ll_sleep_set_channel_num(TOUCH_PAD_NUM0);