1 /*
2  * Copyright (C) 2015-2021 Alibaba Group Holding Limited
3  */
4 
5 #include "modmachine.h"
6 #include "py/mphal.h"
7 #include "py/runtime.h"
8 
9 #if 0
10 
11 #include "driver/gpio.h"
12 #include "driver/touch_pad.h"
13 
14 typedef struct _mtp_obj_t {
15     mp_obj_base_t base;
16     gpio_num_t gpio_id;
17     touch_pad_t touchpad_id;
18 } mtp_obj_t;
19 
20 STATIC const mtp_obj_t touchpad_obj[] = {
21     {{&machine_touchpad_type}, GPIO_NUM_4, TOUCH_PAD_NUM0},
22     {{&machine_touchpad_type}, GPIO_NUM_0, TOUCH_PAD_NUM1},
23     {{&machine_touchpad_type}, GPIO_NUM_2, TOUCH_PAD_NUM2},
24     {{&machine_touchpad_type}, GPIO_NUM_15, TOUCH_PAD_NUM3},
25     {{&machine_touchpad_type}, GPIO_NUM_13, TOUCH_PAD_NUM4},
26     {{&machine_touchpad_type}, GPIO_NUM_12, TOUCH_PAD_NUM5},
27     {{&machine_touchpad_type}, GPIO_NUM_14, TOUCH_PAD_NUM6},
28     {{&machine_touchpad_type}, GPIO_NUM_27, TOUCH_PAD_NUM7},
29     {{&machine_touchpad_type}, GPIO_NUM_33, TOUCH_PAD_NUM8},
30     {{&machine_touchpad_type}, GPIO_NUM_32, TOUCH_PAD_NUM9},
31 };
32 
33 STATIC mp_obj_t mtp_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw,
34     const mp_obj_t *args) {
35 
36     mp_arg_check_num(n_args, n_kw, 1, 1, true);
37     gpio_num_t pin_id = machine_pin_get_id(args[0]);
38     const mtp_obj_t *self = NULL;
39     for (int i = 0; i < MP_ARRAY_SIZE(touchpad_obj); i++) {
40         if (pin_id == touchpad_obj[i].gpio_id) {
41             self = &touchpad_obj[i];
42             break;
43         }
44     }
45     if (!self) {
46         mp_raise_ValueError(MP_ERROR_TEXT("invalid pin for touchpad"));
47     }
48 
49     static int initialized = 0;
50     if (!initialized) {
51         touch_pad_init();
52         touch_pad_set_fsm_mode(TOUCH_FSM_MODE_TIMER);
53         initialized = 1;
54     }
55     esp_err_t err = touch_pad_config(self->touchpad_id, 0);
56     if (err == ESP_OK) {
57         return MP_OBJ_FROM_PTR(self);
58     }
59     mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
60 }
61 
62 STATIC mp_obj_t mtp_config(mp_obj_t self_in, mp_obj_t value_in) {
63     mtp_obj_t *self = self_in;
64     uint16_t value = mp_obj_get_int(value_in);
65     esp_err_t err = touch_pad_config(self->touchpad_id, value);
66     if (err == ESP_OK) {
67         return mp_const_none;
68     }
69     mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
70 }
71 MP_DEFINE_CONST_FUN_OBJ_2(mtp_config_obj, mtp_config);
72 
73 STATIC mp_obj_t mtp_read(mp_obj_t self_in) {
74     mtp_obj_t *self = self_in;
75     uint16_t value;
76     esp_err_t err = touch_pad_read(self->touchpad_id, &value);
77     if (err == ESP_OK) {
78         return MP_OBJ_NEW_SMALL_INT(value);
79     }
80     mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
81 }
82 MP_DEFINE_CONST_FUN_OBJ_1(mtp_read_obj, mtp_read);
83 
84 STATIC const mp_rom_map_elem_t mtp_locals_dict_table[] = {
85     // instance methods
86     { MP_ROM_QSTR(MP_QSTR_config), MP_ROM_PTR(&mtp_config_obj) },
87     { MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mtp_read_obj) },
88 };
89 
90 STATIC MP_DEFINE_CONST_DICT(mtp_locals_dict, mtp_locals_dict_table);
91 
92 const mp_obj_type_t machine_touchpad_type = {
93     { &mp_type_type },
94     .name = MP_QSTR_TouchPad,
95     .make_new = mtp_make_new,
96     .locals_dict = (mp_obj_t)&mtp_locals_dict,
97 };
98 
99 #endif
100