98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
/*
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* main.c
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*
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* Created on: Aug 2, 2016
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* Author: tkl
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*/
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#include <stdbool.h>
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#include "driver.h"
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#include "board.h"
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#include "stack.h"
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#include "queue.h"
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#include "kernel.h"
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#include "driver.h"
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#include "list.h"
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#include "shell.h"
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#include "stm32f4xx.h"
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#include "pwm.h"
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#include "stm32f4_pwm.h"
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/* apb1 clock = 84MHz */
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/* period_reg = src_clk / presc / cnt_clk */
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/* 4199 = 84MHZ / (0 + 1) / 20kHz - 1 */
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static const TIM_TimeBaseInitTypeDef timer_4_cfg = {
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.TIM_RepetitionCounter = 0x0000,
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.TIM_Prescaler = 0,
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.TIM_ClockDivision = TIM_CKD_DIV1,
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.TIM_CounterMode = TIM_CounterMode_Up,
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.TIM_Period = 4199
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};
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static const TIM_OCInitTypeDef t4_output_compare_cfg = {
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.TIM_OutputNState = TIM_OutputNState_Disable,
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.TIM_OCNPolarity = TIM_OCPolarity_High,
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.TIM_OCIdleState = TIM_OCIdleState_Reset,
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.TIM_OCNIdleState = TIM_OCNIdleState_Set,
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.TIM_OCMode = TIM_OCMode_PWM1,
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.TIM_OCPolarity = TIM_OCPolarity_High,
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.TIM_OutputState = TIM_OutputState_Enable,
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.TIM_Pulse = 0 // Initiale Pulsweite in Millisekunden
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};
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static const GPIO_InitTypeDef port_cfg = {
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.GPIO_Pin = GPIO_Pin_15,
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.GPIO_Mode = GPIO_Mode_AF,
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.GPIO_OType = GPIO_OType_PP,
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.GPIO_PuPd = GPIO_PuPd_UP,
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.GPIO_Speed = GPIO_Speed_100MHz,
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};
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static struct stm32f4_pwm str32f4_pwm = {
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.timer = TIM4,
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.timer_cfg = &timer_4_cfg,
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.output_compare_cfg = &t4_output_compare_cfg,
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.port = GPIOD,
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.pin_src = GPIO_PinSource15,
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.port_cfg = &port_cfg,
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.channel = channel_4,
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};
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static const struct pwm pwm_ch4 = {
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.arch_dep_device = &str32f4_pwm,
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.fp = &stm32f4_pwm_fp,
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};
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#define TH_STACK_SIZE 256
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stack_t th_stack[TH_STACK_SIZE];
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struct thread_context th_ctx;
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static void th_func(void *arg)
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{
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unsigned int duty = 0;
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pwm_open(&pwm_ch4);
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while(1) {
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while(duty < 100) {
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pwm_set_duty_cycle(&pwm_ch4, duty);
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sleep_ms(10);
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duty++;
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}
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while(duty > 0) {
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pwm_set_duty_cycle(&pwm_ch4, duty);
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sleep_ms(10);
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duty--;
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}
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}
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}
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int main(void)
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{
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thread_create(&th_ctx, th_stack, TH_STACK_SIZE, th_func, NULL, THREAD_PRIO_LOW);
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schedule_start();
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return 0;
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}
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