1 /*
2  * This file is part of the MicroPython project, http://micropython.org/
3  *
4  * The MIT License (MIT)
5  *
6  * Copyright (c) 2017 Nick Moore
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a copy
9  * of this software and associated documentation files (the "Software"), to deal
10  * in the Software without restriction, including without limitation the rights
11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12  * copies of the Software, and to permit persons to whom the Software is
13  * furnished to do so, subject to the following conditions:
14  *
15  * The above copyright notice and this permission notice shall be included in
16  * all copies or substantial portions of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24  * THE SOFTWARE.
25  */
26 
27 #include "py/runtime.h"
28 #include "py/mphal.h"
29 #include "modmachine.h"
30 
31 #if 0
32 
33 #include "driver/gpio.h"
34 #include "driver/touch_pad.h"
35 
36 typedef struct _mtp_obj_t {
37     mp_obj_base_t base;
38     gpio_num_t gpio_id;
39     touch_pad_t touchpad_id;
40 } mtp_obj_t;
41 
42 STATIC const mtp_obj_t touchpad_obj[] = {
43     {{&machine_touchpad_type}, GPIO_NUM_4, TOUCH_PAD_NUM0},
44     {{&machine_touchpad_type}, GPIO_NUM_0, TOUCH_PAD_NUM1},
45     {{&machine_touchpad_type}, GPIO_NUM_2, TOUCH_PAD_NUM2},
46     {{&machine_touchpad_type}, GPIO_NUM_15, TOUCH_PAD_NUM3},
47     {{&machine_touchpad_type}, GPIO_NUM_13, TOUCH_PAD_NUM4},
48     {{&machine_touchpad_type}, GPIO_NUM_12, TOUCH_PAD_NUM5},
49     {{&machine_touchpad_type}, GPIO_NUM_14, TOUCH_PAD_NUM6},
50     {{&machine_touchpad_type}, GPIO_NUM_27, TOUCH_PAD_NUM7},
51     {{&machine_touchpad_type}, GPIO_NUM_33, TOUCH_PAD_NUM8},
52     {{&machine_touchpad_type}, GPIO_NUM_32, TOUCH_PAD_NUM9},
53 };
54 
55 STATIC mp_obj_t mtp_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw,
56     const mp_obj_t *args) {
57 
58     mp_arg_check_num(n_args, n_kw, 1, 1, true);
59     gpio_num_t pin_id = machine_pin_get_id(args[0]);
60     const mtp_obj_t *self = NULL;
61     for (int i = 0; i < MP_ARRAY_SIZE(touchpad_obj); i++) {
62         if (pin_id == touchpad_obj[i].gpio_id) {
63             self = &touchpad_obj[i];
64             break;
65         }
66     }
67     if (!self) {
68         mp_raise_ValueError(MP_ERROR_TEXT("invalid pin for touchpad"));
69     }
70 
71     static int initialized = 0;
72     if (!initialized) {
73         touch_pad_init();
74         touch_pad_set_fsm_mode(TOUCH_FSM_MODE_TIMER);
75         initialized = 1;
76     }
77     esp_err_t err = touch_pad_config(self->touchpad_id, 0);
78     if (err == ESP_OK) {
79         return MP_OBJ_FROM_PTR(self);
80     }
81     mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
82 }
83 
84 STATIC mp_obj_t mtp_config(mp_obj_t self_in, mp_obj_t value_in) {
85     mtp_obj_t *self = self_in;
86     uint16_t value = mp_obj_get_int(value_in);
87     esp_err_t err = touch_pad_config(self->touchpad_id, value);
88     if (err == ESP_OK) {
89         return mp_const_none;
90     }
91     mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
92 }
93 MP_DEFINE_CONST_FUN_OBJ_2(mtp_config_obj, mtp_config);
94 
95 STATIC mp_obj_t mtp_read(mp_obj_t self_in) {
96     mtp_obj_t *self = self_in;
97     uint16_t value;
98     esp_err_t err = touch_pad_read(self->touchpad_id, &value);
99     if (err == ESP_OK) {
100         return MP_OBJ_NEW_SMALL_INT(value);
101     }
102     mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
103 }
104 MP_DEFINE_CONST_FUN_OBJ_1(mtp_read_obj, mtp_read);
105 
106 STATIC const mp_rom_map_elem_t mtp_locals_dict_table[] = {
107     // instance methods
108     { MP_ROM_QSTR(MP_QSTR_config), MP_ROM_PTR(&mtp_config_obj) },
109     { MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mtp_read_obj) },
110 };
111 
112 STATIC MP_DEFINE_CONST_DICT(mtp_locals_dict, mtp_locals_dict_table);
113 
114 const mp_obj_type_t machine_touchpad_type = {
115     { &mp_type_type },
116     .name = MP_QSTR_TouchPad,
117     .make_new = mtp_make_new,
118     .locals_dict = (mp_obj_t)&mtp_locals_dict,
119 };
120 
121 #endif
122