1 /*
2  * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  */
6 
7 // The HAL layer for Touch sensor (common part)
8 
9 #include "hal/touch_sensor_hal.h"
10 #include "hal/touch_sensor_types.h"
11 
touch_hal_init(void)12 void touch_hal_init(void)
13 {
14     touch_ll_stop_fsm();
15     touch_ll_intr_disable();
16     touch_ll_intr_clear();
17     touch_ll_clear_channel_mask(TOUCH_PAD_BIT_MASK_ALL);
18     touch_ll_clear_group_mask(TOUCH_PAD_BIT_MASK_ALL, TOUCH_PAD_BIT_MASK_ALL);
19     touch_ll_set_trigger_mode(TOUCH_TRIGGER_MODE_DEFAULT);
20     touch_ll_set_trigger_source(TOUCH_TRIGGER_SOURCE_DEFAULT);
21     touch_ll_clear_trigger_status_mask();
22     touch_ll_set_meas_time(TOUCH_PAD_MEASURE_CYCLE_DEFAULT);
23     touch_ll_set_sleep_time(TOUCH_PAD_SLEEP_CYCLE_DEFAULT);
24     touch_ll_set_fsm_mode(TOUCH_FSM_MODE_DEFAULT);
25     touch_ll_start_fsm();
26 }
27 
touch_hal_deinit(void)28 void touch_hal_deinit(void)
29 {
30     touch_ll_stop_fsm();
31     touch_ll_clear_trigger_status_mask();
32     touch_ll_intr_disable();
33 }
34 
touch_hal_get_wakeup_status(touch_pad_t * pad_num)35 void touch_hal_get_wakeup_status(touch_pad_t *pad_num)
36 {
37     uint32_t touch_mask = 0;
38     touch_ll_read_trigger_status_mask(&touch_mask);
39     if (touch_mask == 0) {
40         *pad_num = -1;
41     } else {
42         *pad_num = (touch_pad_t)(__builtin_ffs(touch_mask) - 1);
43     }
44 }
45