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This commit is contained in:
tkl 2016-08-09 12:35:56 +02:00
parent 461f219b08
commit 2f13f30b3d
2 changed files with 50 additions and 50 deletions
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50
source/firmware/arch/stm32f4xx/board/stm32f4-discovery/include/stm32f4-discovery.h
View File

@ -13,15 +13,18 @@
#include "driver.h"
#include "gpio.h"
#include "pwm.h"
#include "timer.h"
#include "uart.h"
#include "ringbuffer.h"
#include "sys_tick.h"
#include "stm32f4xx.h"
#include "stm32f4_gpio.h"
#include "stm32f4_pwm.h"
#include "stm32f4_uart.h"
#include "stm32_sys_tick.h"
// SYSTEM TICK
static const enum stm32_sys_tick_time_base stm23_sys_tick_time_base =
STM32_SYS_TICK_TIME_BASE_MS;
@ -36,6 +39,53 @@ static const struct loki_timer timer_1 = {
&timer_fp
};
// PWM CHANNEL 4
/* apb1 clock = 84MHz */
/* period_reg = src_clk / presc / cnt_clk */
/* 4199 = 84MHZ / (0 + 1) / 20kHz - 1 */
static const TIM_TimeBaseInitTypeDef timer_4_cfg = {
.TIM_RepetitionCounter = 0x0000,
.TIM_Prescaler = 0,
.TIM_ClockDivision = TIM_CKD_DIV1,
.TIM_CounterMode = TIM_CounterMode_Up,
.TIM_Period = 4199
};
static const TIM_OCInitTypeDef t4_output_compare_cfg = {
.TIM_OutputNState = TIM_OutputNState_Disable,
.TIM_OCNPolarity = TIM_OCPolarity_High,
.TIM_OCIdleState = TIM_OCIdleState_Reset,
.TIM_OCNIdleState = TIM_OCNIdleState_Set,
.TIM_OCMode = TIM_OCMode_PWM1,
.TIM_OCPolarity = TIM_OCPolarity_High,
.TIM_OutputState = TIM_OutputState_Enable,
.TIM_Pulse = 0 // Initiale Pulsweite in Millisekunden
};
static const GPIO_InitTypeDef port_cfg = {
.GPIO_Pin = GPIO_Pin_15,
.GPIO_Mode = GPIO_Mode_AF,
.GPIO_OType = GPIO_OType_PP,
.GPIO_PuPd = GPIO_PuPd_UP,
.GPIO_Speed = GPIO_Speed_100MHz,
};
static struct stm32f4_pwm str32f4_pwm = {
.timer = TIM4,
.timer_cfg = &timer_4_cfg,
.output_compare_cfg = &t4_output_compare_cfg,
.port = GPIOD,
.pin_src = GPIO_PinSource15,
.port_cfg = &port_cfg,
.channel = channel_4,
};
static const struct pwm pwm_ch4 = {
.arch_dep_device = &str32f4_pwm,
.fp = &stm32f4_pwm_fp,
};
// UART 1
static char console_linear_buffer[80];
static struct ringbuffer console_buffer = {
console_linear_buffer,

50
source/test/pwm/main.c
View File

@ -16,55 +16,6 @@
#include "list.h"
#include "shell.h"
#include "stm32f4xx.h"
#include "pwm.h"
#include "stm32f4_pwm.h"
/* apb1 clock = 84MHz */
/* period_reg = src_clk / presc / cnt_clk */
/* 4199 = 84MHZ / (0 + 1) / 20kHz - 1 */
static const TIM_TimeBaseInitTypeDef timer_4_cfg = {
.TIM_RepetitionCounter = 0x0000,
.TIM_Prescaler = 0,
.TIM_ClockDivision = TIM_CKD_DIV1,
.TIM_CounterMode = TIM_CounterMode_Up,
.TIM_Period = 4199
};
static const TIM_OCInitTypeDef t4_output_compare_cfg = {
.TIM_OutputNState = TIM_OutputNState_Disable,
.TIM_OCNPolarity = TIM_OCPolarity_High,
.TIM_OCIdleState = TIM_OCIdleState_Reset,
.TIM_OCNIdleState = TIM_OCNIdleState_Set,
.TIM_OCMode = TIM_OCMode_PWM1,
.TIM_OCPolarity = TIM_OCPolarity_High,
.TIM_OutputState = TIM_OutputState_Enable,
.TIM_Pulse = 0 // Initiale Pulsweite in Millisekunden
};
static const GPIO_InitTypeDef port_cfg = {
.GPIO_Pin = GPIO_Pin_15,
.GPIO_Mode = GPIO_Mode_AF,
.GPIO_OType = GPIO_OType_PP,
.GPIO_PuPd = GPIO_PuPd_UP,
.GPIO_Speed = GPIO_Speed_100MHz,
};
static struct stm32f4_pwm str32f4_pwm = {
.timer = TIM4,
.timer_cfg = &timer_4_cfg,
.output_compare_cfg = &t4_output_compare_cfg,
.port = GPIOD,
.pin_src = GPIO_PinSource15,
.port_cfg = &port_cfg,
.channel = channel_4,
};
static const struct pwm pwm_ch4 = {
.arch_dep_device = &str32f4_pwm,
.fp = &stm32f4_pwm_fp,
};
#define TH_STACK_SIZE 256
stack_t th_stack[TH_STACK_SIZE];
@ -90,7 +41,6 @@ static void th_func(void *arg)
int main(void)
{
thread_create(&th_ctx, th_stack, TH_STACK_SIZE, th_func, NULL, THREAD_PRIO_LOW);
schedule_start();
return 0;