121 lines
4.3 KiB
C
121 lines
4.3 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) 2019 Lucian Copeland for Adafruit Industries
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* Uses code from Micropython, Copyright (c) 2013-2016 Damien P. George
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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 "common-hal/pulseio/PWMOut.h"
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#include "shared-bindings/pulseio/PWMOut.h"
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#include "py/runtime.h"
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#include "driver/ledc.h"
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#define LEDC_LS_TIMER LEDC_TIMER_1
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#define LEDC_LS_MODE LEDC_LOW_SPEED_MODE
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#define LEDC_LS_CH0_GPIO (18)
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#define LEDC_LS_CH0_CHANNEL LEDC_CHANNEL_0
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#define LEDC_LS_CH1_GPIO (19)
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#define LEDC_LS_CH1_CHANNEL LEDC_CHANNEL_1
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#define LEDC_LS_CH2_GPIO (4)
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#define LEDC_LS_CH2_CHANNEL LEDC_CHANNEL_2
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#define LEDC_LS_CH3_GPIO (5)
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#define LEDC_LS_CH3_CHANNEL LEDC_CHANNEL_3
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#define LEDC_TEST_CH_NUM (4)
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#define LEDC_TEST_DUTY (4000)
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#define LEDC_TEST_FADE_TIME (3000)
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void pwmout_reset(void) {
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}
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pwmout_result_t common_hal_pulseio_pwmout_construct(pulseio_pwmout_obj_t* self,
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const mcu_pin_obj_t* pin,
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uint16_t duty,
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uint32_t frequency,
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bool variable_frequency) {
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ledc_timer_config_t ledc_timer = {
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.duty_resolution = LEDC_TIMER_16_BIT, // resolution of PWM duty
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.freq_hz = frequency, // frequency of PWM signal
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.speed_mode = LEDC_LS_MODE, // timer mode
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.timer_num = LEDC_LS_TIMER, // timer index
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.clk_cfg = LEDC_AUTO_CLK, // Auto select the source clock
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};
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// Set configuration of timer0 for high speed channels
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ledc_timer_config(&ledc_timer);
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ledc_channel_config_t pwm_channel = {
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.channel = LEDC_LS_CH0_CHANNEL,
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.duty = 0,
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.gpio_num = pin->number,
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.speed_mode = LEDC_LS_MODE,
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.hpoint = 0,
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.timer_sel = LEDC_LS_TIMER
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};
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// Set LED Controller with previously prepared configuration
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for (ch = 0; ch < LEDC_TEST_CH_NUM; ch++) {
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ledc_channel_config(&ledc_channel[ch]);
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}
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for (ch = 0; ch < LEDC_TEST_CH_NUM; ch++) {
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ledc_set_duty(ledc_channel[ch].speed_mode, ledc_channel[ch].channel, duty*2);
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ledc_update_duty(ledc_channel[ch].speed_mode, ledc_channel[ch].channel);
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}
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return PWMOUT_OK;
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}
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void common_hal_pulseio_pwmout_never_reset(pulseio_pwmout_obj_t *self) {
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}
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void common_hal_pulseio_pwmout_reset_ok(pulseio_pwmout_obj_t *self) {
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}
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bool common_hal_pulseio_pwmout_deinited(pulseio_pwmout_obj_t* self) {
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return false;
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}
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void common_hal_pulseio_pwmout_deinit(pulseio_pwmout_obj_t* self) {
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}
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void common_hal_pulseio_pwmout_set_duty_cycle(pulseio_pwmout_obj_t* self, uint16_t duty) {
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}
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uint16_t common_hal_pulseio_pwmout_get_duty_cycle(pulseio_pwmout_obj_t* self) {
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return false;
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}
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void common_hal_pulseio_pwmout_set_frequency(pulseio_pwmout_obj_t* self, uint32_t frequency) {
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}
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uint32_t common_hal_pulseio_pwmout_get_frequency(pulseio_pwmout_obj_t* self) {
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return false;
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}
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bool common_hal_pulseio_pwmout_get_variable_frequency(pulseio_pwmout_obj_t* self) {
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return false;
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}
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