81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2015 Josef Gajdusek
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
// This file is never compiled standalone, it's included directly from
|
|
// extmod/machine_adc.c via MICROPY_PY_MACHINE_ADC_INCLUDEFILE.
|
|
|
|
#include "user_interface.h"
|
|
|
|
// The ADC class doesn't have any constants for this port.
|
|
#define MICROPY_PY_MACHINE_ADC_CLASS_CONSTANTS
|
|
|
|
typedef struct _machine_adc_obj_t {
|
|
mp_obj_base_t base;
|
|
bool isvdd;
|
|
} machine_adc_obj_t;
|
|
|
|
STATIC machine_adc_obj_t machine_adc_vdd3 = {{&machine_adc_type}, true};
|
|
STATIC machine_adc_obj_t machine_adc_adc = {{&machine_adc_type}, false};
|
|
|
|
STATIC uint16_t adc_read(machine_adc_obj_t *self) {
|
|
if (self->isvdd) {
|
|
return system_get_vdd33();
|
|
} else {
|
|
return system_adc_read();
|
|
}
|
|
}
|
|
|
|
STATIC void mp_machine_adc_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
|
|
machine_adc_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
|
mp_printf(print, "ADC(%u)", self->isvdd);
|
|
}
|
|
|
|
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) {
|
|
mp_arg_check_num(n_args, n_kw, 1, 1, false);
|
|
|
|
mp_int_t chn = mp_obj_get_int(args[0]);
|
|
|
|
switch (chn) {
|
|
case 0:
|
|
return &machine_adc_adc;
|
|
case 1:
|
|
return &machine_adc_vdd3;
|
|
default:
|
|
mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("ADC(%d) doesn't exist"), chn);
|
|
}
|
|
}
|
|
|
|
// read_u16()
|
|
STATIC mp_int_t mp_machine_adc_read_u16(machine_adc_obj_t *self) {
|
|
uint32_t value = adc_read(self);
|
|
return value * 65535 / 1024;
|
|
}
|
|
|
|
// Legacy method
|
|
STATIC mp_int_t mp_machine_adc_read(machine_adc_obj_t *self) {
|
|
return adc_read(self);
|
|
}
|