122 lines
4.1 KiB
C
122 lines
4.1 KiB
C
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/*
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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 "temp.h"
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#include "hal_temp.h"
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#if MICROPY_PY_MACHINE_TEMP
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typedef struct _machine_temp_obj_t {
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mp_obj_base_t base;
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TEMP_HandleTypeDef *temp;
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} machine_temp_obj_t;
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TEMP_HandleTypeDef TEMPHandle0 = {.instance = NULL };
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STATIC const machine_temp_obj_t machine_temp_obj = {
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{&machine_temp_type}, &TEMPHandle0
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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_temp_print(const mp_print_t *print, mp_obj_t o, mp_print_kind_t kind) {
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machine_temp_obj_t *self = o;
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(void)self;
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mp_printf(print, "TEMP");
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}
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/******************************************************************************/
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/* MicroPython bindings for machine API */
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STATIC mp_obj_t machine_temp_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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{ },
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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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memset(&TEMPHandle0, 0, sizeof(TEMP_HandleTypeDef));
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TEMPHandle0.instance = TEMP_BASE;
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const machine_temp_obj_t *self = &machine_temp_obj;
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return MP_OBJ_FROM_PTR(self);
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}
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/// \method read()
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/// Get temperature.
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mp_obj_t machine_temp_read(void) {
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int32_t volatile temp;
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NRF_TEMP->TASKS_START = 1; /** Start the temperature measurement. */
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/* Busy wait while temperature measurement is not finished, you can skip waiting if you enable interrupt for DATARDY event and read the result in the interrupt. */
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/*lint -e{845} // A zero has been given as right argument to operator '|'" */
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while (NRF_TEMP->EVENTS_DATARDY == 0)
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{
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// Do nothing.
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}
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NRF_TEMP->EVENTS_DATARDY = 0;
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/**@note Workaround for PAN_028 rev2.0A anomaly 29 - TEMP: Stop task clears the TEMP register. */
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temp = (hal_temp_read() / 4);
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/**@note Workaround for PAN_028 rev2.0A anomaly 30 - TEMP: Temp module analog front end does not power down when DATARDY event occurs. */
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NRF_TEMP->TASKS_STOP = 1; /** Stop the temperature measurement. */
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return MP_OBJ_NEW_SMALL_INT(temp);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(mp_machine_temp_read_obj, machine_temp_read);
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STATIC const mp_map_elem_t machine_temp_locals_dict_table[] = {
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// instance methods
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// class methods
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{ MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&mp_machine_temp_read_obj },
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};
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STATIC MP_DEFINE_CONST_DICT(machine_temp_locals_dict, machine_temp_locals_dict_table);
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const mp_obj_type_t machine_temp_type = {
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{ &mp_type_type },
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.name = MP_QSTR_TEMP,
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.make_new = machine_temp_make_new,
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.locals_dict = (mp_obj_t)&machine_temp_locals_dict,
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.print = machine_temp_print,
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};
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#endif // MICROPY_PY_MACHINE_TEMP
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