kopia lustrzana https://github.com/micropython/micropython
81 wiersze
2.8 KiB
C
81 wiersze
2.8 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) 2015 Josef Gajdusek
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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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// This file is never compiled standalone, it's included directly from
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// extmod/machine_adc.c via MICROPY_PY_MACHINE_ADC_INCLUDEFILE.
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#include "user_interface.h"
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// The ADC class doesn't have any constants for this port.
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#define MICROPY_PY_MACHINE_ADC_CLASS_CONSTANTS
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typedef struct _machine_adc_obj_t {
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mp_obj_base_t base;
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bool isvdd;
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} machine_adc_obj_t;
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static machine_adc_obj_t machine_adc_vdd3 = {{&machine_adc_type}, true};
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static machine_adc_obj_t machine_adc_adc = {{&machine_adc_type}, false};
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static uint16_t adc_read(machine_adc_obj_t *self) {
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if (self->isvdd) {
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return system_get_vdd33();
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} else {
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return system_adc_read();
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}
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}
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static void mp_machine_adc_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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machine_adc_obj_t *self = MP_OBJ_TO_PTR(self_in);
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mp_printf(print, "ADC(%u)", self->isvdd);
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}
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static mp_obj_t mp_machine_adc_make_new(const mp_obj_type_t *type_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 1, 1, false);
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mp_int_t chn = mp_obj_get_int(args[0]);
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switch (chn) {
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case 0:
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return &machine_adc_adc;
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case 1:
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return &machine_adc_vdd3;
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default:
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mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("ADC(%d) doesn't exist"), chn);
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}
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}
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// read_u16()
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static mp_int_t mp_machine_adc_read_u16(machine_adc_obj_t *self) {
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uint32_t value = adc_read(self);
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return value * 65535 / 1024;
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}
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// Legacy method
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static mp_int_t mp_machine_adc_read(machine_adc_obj_t *self) {
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return adc_read(self);
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}
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