1 // Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // The HAL layer for Touch sensor (common part) 16 17 #include "hal/touch_sensor_hal.h" 18 #include "hal/touch_sensor_types.h" 19 touch_hal_init(void)20void touch_hal_init(void) 21 { 22 touch_ll_stop_fsm(); 23 touch_ll_intr_disable(); 24 touch_ll_intr_clear(); 25 touch_ll_clear_channel_mask(TOUCH_PAD_BIT_MASK_ALL); 26 touch_ll_clear_group_mask(TOUCH_PAD_BIT_MASK_ALL, TOUCH_PAD_BIT_MASK_ALL); 27 touch_ll_set_trigger_mode(TOUCH_TRIGGER_MODE_DEFAULT); 28 touch_ll_set_trigger_source(TOUCH_TRIGGER_SOURCE_DEFAULT); 29 touch_ll_clear_trigger_status_mask(); 30 touch_ll_set_meas_time(TOUCH_PAD_MEASURE_CYCLE_DEFAULT); 31 touch_ll_set_sleep_time(TOUCH_PAD_SLEEP_CYCLE_DEFAULT); 32 touch_ll_set_fsm_mode(TOUCH_FSM_MODE_DEFAULT); 33 touch_ll_start_fsm(); 34 } 35 touch_hal_deinit(void)36void touch_hal_deinit(void) 37 { 38 touch_ll_stop_fsm(); 39 touch_ll_clear_trigger_status_mask(); 40 touch_ll_intr_disable(); 41 } 42 touch_hal_get_wakeup_status(touch_pad_t * pad_num)43void touch_hal_get_wakeup_status(touch_pad_t *pad_num) 44 { 45 uint32_t touch_mask = 0; 46 touch_ll_read_trigger_status_mask(&touch_mask); 47 if (touch_mask == 0) { 48 *pad_num = -1; 49 } 50 *pad_num = (touch_pad_t)(__builtin_ffs(touch_mask) - 1); 51 } 52