components/hal/esp32/touch_sensor_hal.c (ESP-IDF)

/* * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ // The HAL layer for Touch sensor (common part) #include "hal/touch_sensor_hal.h" #include "hal/touch_sensor_types.h" void touch_hal_init(void) { touch_ll_stop_fsm(); touch_ll_intr_disable(); touch_ll_intr_clear(); touch_ll_clear_channel_mask(TOUCH_PAD_BIT_MASK_ALL); touch_ll_clear_group_mask(TOUCH_PAD_BIT_MASK_ALL, TOUCH_PAD_BIT_MASK_ALL); touch_ll_set_trigger_mode(TOUCH_TRIGGER_MODE_DEFAULT); touch_ll_set_trigger_source(TOUCH_TRIGGER_SOURCE_DEFAULT); touch_ll_clear_trigger_status_mask(); touch_ll_set_meas_time(TOUCH_PAD_MEASURE_CYCLE_DEFAULT); touch_ll_set_sleep_time(TOUCH_PAD_SLEEP_CYCLE_DEFAULT); touch_ll_set_fsm_mode(TOUCH_FSM_MODE_DEFAULT); touch_ll_start_fsm(); } void touch_hal_deinit(void) { touch_ll_stop_fsm(); touch_ll_clear_trigger_status_mask(); touch_ll_intr_disable(); } void touch_hal_get_wakeup_status(touch_pad_t *pad_num) { uint32_t touch_mask = 0; touch_ll_read_trigger_status_mask(&touch_mask); if (touch_mask == 0) { *pad_num = -1; } else { *pad_num = (touch_pad_t)(__builtin_ffs(touch_mask) - 1); } }