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172 lines
6.1 KiB
C
172 lines
6.1 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Nick Moore
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "modmachine.h"
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#include "driver/gpio.h"
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#if SOC_TOUCH_SENSOR_SUPPORTED
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#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 3, 0)
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#if SOC_TOUCH_VERSION_1
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#define SOC_TOUCH_SENSOR_VERSION (1)
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#elif SOC_TOUCH_VERSION_2
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#define SOC_TOUCH_SENSOR_VERSION (2)
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#endif
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#endif
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#if SOC_TOUCH_SENSOR_VERSION == 1 // ESP32 only
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#include "driver/touch_pad.h"
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#elif SOC_TOUCH_SENSOR_VERSION == 2 // All other SoCs with touch, to date
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#include "driver/touch_sensor.h"
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#else
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#error "Unknown touch hardware version"
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#endif
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typedef struct _mtp_obj_t {
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mp_obj_base_t base;
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gpio_num_t gpio_id;
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touch_pad_t touchpad_id;
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} mtp_obj_t;
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static const mtp_obj_t touchpad_obj[] = {
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#if CONFIG_IDF_TARGET_ESP32
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{{&machine_touchpad_type}, GPIO_NUM_4, TOUCH_PAD_NUM0},
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{{&machine_touchpad_type}, GPIO_NUM_0, TOUCH_PAD_NUM1},
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{{&machine_touchpad_type}, GPIO_NUM_2, TOUCH_PAD_NUM2},
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{{&machine_touchpad_type}, GPIO_NUM_15, TOUCH_PAD_NUM3},
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{{&machine_touchpad_type}, GPIO_NUM_13, TOUCH_PAD_NUM4},
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{{&machine_touchpad_type}, GPIO_NUM_12, TOUCH_PAD_NUM5},
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{{&machine_touchpad_type}, GPIO_NUM_14, TOUCH_PAD_NUM6},
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{{&machine_touchpad_type}, GPIO_NUM_27, TOUCH_PAD_NUM7},
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{{&machine_touchpad_type}, GPIO_NUM_33, TOUCH_PAD_NUM8},
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{{&machine_touchpad_type}, GPIO_NUM_32, TOUCH_PAD_NUM9},
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#elif CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
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{{&machine_touchpad_type}, GPIO_NUM_1, TOUCH_PAD_NUM1},
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{{&machine_touchpad_type}, GPIO_NUM_2, TOUCH_PAD_NUM2},
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{{&machine_touchpad_type}, GPIO_NUM_3, TOUCH_PAD_NUM3},
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{{&machine_touchpad_type}, GPIO_NUM_4, TOUCH_PAD_NUM4},
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{{&machine_touchpad_type}, GPIO_NUM_5, TOUCH_PAD_NUM5},
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{{&machine_touchpad_type}, GPIO_NUM_6, TOUCH_PAD_NUM6},
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{{&machine_touchpad_type}, GPIO_NUM_7, TOUCH_PAD_NUM7},
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{{&machine_touchpad_type}, GPIO_NUM_8, TOUCH_PAD_NUM8},
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{{&machine_touchpad_type}, GPIO_NUM_9, TOUCH_PAD_NUM9},
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{{&machine_touchpad_type}, GPIO_NUM_10, TOUCH_PAD_NUM10},
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{{&machine_touchpad_type}, GPIO_NUM_11, TOUCH_PAD_NUM11},
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{{&machine_touchpad_type}, GPIO_NUM_12, TOUCH_PAD_NUM12},
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{{&machine_touchpad_type}, GPIO_NUM_13, TOUCH_PAD_NUM13},
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{{&machine_touchpad_type}, GPIO_NUM_14, TOUCH_PAD_NUM14},
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#else
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#error "Please add GPIO mapping for this SoC"
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#endif
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};
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static mp_obj_t mtp_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw,
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const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 1, 1, true);
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gpio_num_t pin_id = machine_pin_get_id(args[0]);
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const mtp_obj_t *self = NULL;
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for (int i = 0; i < MP_ARRAY_SIZE(touchpad_obj); i++) {
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if (pin_id == touchpad_obj[i].gpio_id) {
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self = &touchpad_obj[i];
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break;
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}
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}
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if (!self) {
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mp_raise_ValueError(MP_ERROR_TEXT("invalid pin for touchpad"));
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}
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static int initialized = 0;
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if (!initialized) {
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touch_pad_init();
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touch_pad_set_fsm_mode(TOUCH_FSM_MODE_TIMER);
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initialized = 1;
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}
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#if SOC_TOUCH_SENSOR_VERSION == 1
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esp_err_t err = touch_pad_config(self->touchpad_id, 0);
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#elif SOC_TOUCH_SENSOR_VERSION == 2
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esp_err_t err = touch_pad_config(self->touchpad_id);
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#endif
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if (err == ESP_OK) {
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#if SOC_TOUCH_SENSOR_VERSION == 2
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touch_pad_fsm_start();
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#endif
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return MP_OBJ_FROM_PTR(self);
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}
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mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
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}
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static mp_obj_t mtp_config(mp_obj_t self_in, mp_obj_t value_in) {
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mtp_obj_t *self = self_in;
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#if SOC_TOUCH_SENSOR_VERSION == 1
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uint16_t value = mp_obj_get_int(value_in);
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esp_err_t err = touch_pad_config(self->touchpad_id, value);
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#elif SOC_TOUCH_SENSOR_VERSION == 2
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esp_err_t err = touch_pad_config(self->touchpad_id);
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#endif
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if (err == ESP_OK) {
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return mp_const_none;
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}
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mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
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}
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MP_DEFINE_CONST_FUN_OBJ_2(mtp_config_obj, mtp_config);
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static mp_obj_t mtp_read(mp_obj_t self_in) {
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mtp_obj_t *self = self_in;
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#if SOC_TOUCH_SENSOR_VERSION == 1
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uint16_t value;
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esp_err_t err = touch_pad_read(self->touchpad_id, &value);
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#elif SOC_TOUCH_SENSOR_VERSION == 2
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uint32_t value;
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esp_err_t err = touch_pad_read_raw_data(self->touchpad_id, &value);
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#endif
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if (err == ESP_OK) {
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return MP_OBJ_NEW_SMALL_INT(value);
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}
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mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(mtp_read_obj, mtp_read);
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static const mp_rom_map_elem_t mtp_locals_dict_table[] = {
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// instance methods
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{ MP_ROM_QSTR(MP_QSTR_config), MP_ROM_PTR(&mtp_config_obj) },
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{ MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mtp_read_obj) },
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};
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static MP_DEFINE_CONST_DICT(mtp_locals_dict, mtp_locals_dict_table);
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MP_DEFINE_CONST_OBJ_TYPE(
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machine_touchpad_type,
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MP_QSTR_TouchPad,
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MP_TYPE_FLAG_NONE,
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make_new, mtp_make_new,
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locals_dict, &mtp_locals_dict
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);
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#endif // SOC_TOUCH_SENSOR_SUPPORTED
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