145 lines
4.8 KiB
C
145 lines
4.8 KiB
C
/*
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* This file is part of the Micro Python 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 Glenn Ruben Bakke
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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 <stdio.h>
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#include <string.h>
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#include "py/nlr.h"
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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "adc.h"
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#include "hal_adc.h"
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#if MICROPY_PY_MACHINE_ADC
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typedef struct _machine_adc_obj_t {
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mp_obj_base_t base;
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ADC_HandleTypeDef *adc;
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} machine_adc_obj_t;
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ADC_HandleTypeDef ADCHandle0 = {.config.channel = 0};
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ADC_HandleTypeDef ADCHandle1 = {.config.channel = 1};
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ADC_HandleTypeDef ADCHandle2 = {.config.channel = 2};
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ADC_HandleTypeDef ADCHandle3 = {.config.channel = 3};
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ADC_HandleTypeDef ADCHandle4 = {.config.channel = 4};
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ADC_HandleTypeDef ADCHandle5 = {.config.channel = 5};
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ADC_HandleTypeDef ADCHandle6 = {.config.channel = 6};
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ADC_HandleTypeDef ADCHandle7 = {.config.channel = 7};
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STATIC const machine_adc_obj_t machine_adc_obj[] = {
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{{&machine_adc_type}, &ADCHandle0},
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{{&machine_adc_type}, &ADCHandle1},
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{{&machine_adc_type}, &ADCHandle2},
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{{&machine_adc_type}, &ADCHandle3},
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{{&machine_adc_type}, &ADCHandle4},
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{{&machine_adc_type}, &ADCHandle5},
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{{&machine_adc_type}, &ADCHandle6},
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{{&machine_adc_type}, &ADCHandle7},
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};
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STATIC int adc_find(mp_obj_t id) {
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// given an integer id
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int adc_id = mp_obj_get_int(id);
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int adc_idx = adc_id;
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if (adc_idx >= 0 && adc_idx <= MP_ARRAY_SIZE(machine_adc_obj)
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&& machine_adc_obj[adc_idx].adc != NULL) {
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return adc_idx;
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}
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
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"ADC(%d) does not exist", adc_id));
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}
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/// \method __str__()
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/// Return a string describing the ADC object.
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STATIC void machine_adc_print(const mp_print_t *print, mp_obj_t o, mp_print_kind_t kind) {
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machine_adc_obj_t *self = o;
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(void)self;
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mp_printf(print, "ADC()");
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}
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/******************************************************************************/
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/* MicroPython bindings for machine API */
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// for make_new
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enum {
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ARG_NEW_PIN,
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};
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STATIC mp_obj_t machine_adc_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
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static const mp_arg_t allowed_args[] = {
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{ ARG_NEW_PIN, MP_ARG_OBJ, {.u_obj = MP_OBJ_NEW_SMALL_INT(-1) } },
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};
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// parse args
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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int adc_id = adc_find(args[ARG_NEW_PIN].u_obj);
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const machine_adc_obj_t *self = &machine_adc_obj[adc_id];
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return MP_OBJ_FROM_PTR(self);
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}
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/// \method value()
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/// Read adc level.
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mp_obj_t machine_adc_value(mp_obj_t self_in) {
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machine_adc_obj_t *self = self_in;
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return MP_OBJ_NEW_SMALL_INT(hal_adc_channel_value(&self->adc->config));
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_machine_adc_value_obj, machine_adc_value);
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/// \method battery_level()
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/// Get battery level in percentage.
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mp_obj_t machine_adc_battery_level(void) {
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return MP_OBJ_NEW_SMALL_INT(hal_adc_battery_level());
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(mp_machine_adc_battery_level_obj, machine_adc_battery_level);
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STATIC const mp_rom_map_elem_t machine_adc_locals_dict_table[] = {
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// instance methods
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{ MP_ROM_QSTR(MP_QSTR_value), MP_ROM_PTR(&mp_machine_adc_value_obj) },
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// class methods
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{ MP_ROM_QSTR(MP_QSTR_battery_level), MP_ROM_PTR(&mp_machine_adc_battery_level_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(machine_adc_locals_dict, machine_adc_locals_dict_table);
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const mp_obj_type_t machine_adc_type = {
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{ &mp_type_type },
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.name = MP_QSTR_ADC,
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.make_new = machine_adc_make_new,
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.locals_dict = (mp_obj_dict_t*)&machine_adc_locals_dict,
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.print = machine_adc_print,
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};
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#endif // MICROPY_PY_MACHINE_ADC
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