stm32f103c8t6产生互补的pwm波，spwm(滤波后50hz正弦波)

spwm需要代码关注私发

stm32f103c8t6产生互补的pwm波

main.c
#include "stm32f10x.h"                  // Device header
#include "Delay.h"
#include "OLED.h"
#include "Timer.h"





void bspTIMInit(void)
{
	GPIOConfig();
	TIM1Config();
}

/************************************************************************
* 接线：
* PA8 CH1 | PB13 CH1N | PB12 BKIN
* 功能：
* 通过 PA8 和 PB13 输出互补的 PWM 波形；当 PB12 为高时，停止 PWM 输出
* 描述：
* PWM 周期 100ms；死区时间 12.8ms
*/

int main(void)
{
	bspTIMInit();
	
	while (1);
}

Timer.c
#include "stm32f10x.h"                  // Device header

 void GPIOConfig(void)
{
	GPIO_InitTypeDef		GPIOInitStruct;	

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE);	/*使能GPIOA，GPIOB时钟*/
	
	GPIOInitStruct.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIOInitStruct.GPIO_Speed = GPIO_Speed_50MHz;
	
	GPIOInitStruct.GPIO_Pin = GPIO_Pin_8;											/*PA8:CH1*/
	GPIO_Init(GPIOA, &GPIOInitStruct);
	
	GPIOInitStruct.GPIO_Pin = GPIO_Pin_13;											/*PB13:CH1N*/
	GPIO_Init(GPIOB, &GPIOInitStruct);
	
	GPIOInitStruct.GPIO_Mode = GPIO_Mode_IN_FLOATING;				
	GPIOInitStruct.GPIO_Pin = GPIO_Pin_12;											/*PB12:BKIN*/
	GPIO_Init(GPIOB, &GPIOInitStruct);

	GPIO_ResetBits(GPIOB, GPIO_Pin_12);												/*设置PB12*/
}

 void TIM1Config(void)
{
	TIM_TimeBaseInitTypeDef		TIMTimeBaseStruct;
	TIM_OCInitTypeDef			TIMOCInitStruct;
	TIM_BDTRInitTypeDef			TIMBDTRInitStruct;
 
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); 							/*使能TIM1时钟*/
 
	/*时基结构体配置*/
	TIMTimeBaseStruct.TIM_Period = 1000 - 1;										/*从0开始 一个信号周期计数1000次*/ 
	/*定时器时钟：72MHz / 7200 = 10kHz；周期：(1 / 10kHz) * 1000 = 100us*/
	TIMTimeBaseStruct.TIM_Prescaler = 72 - 1;										/*计数器频率10kHz，每计数一次花费 100us*/
	/*一个信号周期花费时间：1000 * 100us = 100ms*/
	TIMTimeBaseStruct.TIM_ClockDivision = TIM_CKD_DIV1; 							/*时钟分频因子 = 1，tDTS=tCKINT*/
	TIMTimeBaseStruct.TIM_CounterMode = TIM_CounterMode_Up; 						/*向上计数*/
	TIMTimeBaseStruct.TIM_RepetitionCounter = 0; 									/*禁用重复计数器*/
	TIM_TimeBaseInit(TIM1, &TIMTimeBaseStruct); 
 
	/*输出比较结构体配置*/
	TIMOCInitStruct.TIM_OCMode = TIM_OCMode_PWM1;									/*PWM1模式*/
	TIMOCInitStruct.TIM_OutputState = TIM_OutputState_Enable;						/*输出使能*/
	TIMOCInitStruct.TIM_OutputNState = TIM_OutputNState_Enable;						/*互补输出使能*/
	TIMOCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;							/*输出有效电平为高电平*/
	TIMOCInitStruct.TIM_OCNPolarity = TIM_OCNPolarity_High;							/*互补输出有效电平为高电平*/
	TIMOCInitStruct.TIM_OCIdleState = TIM_OCIdleState_Set;							/*输出空闲时为高电平*/
	TIMOCInitStruct.TIM_OCNIdleState = TIM_OCNIdleState_Reset;						/*互补输出空闲时为低电平*/
 
	/*初始化TIM1的通道1*/
	TIMOCInitStruct.TIM_Pulse = 500 ; 											/*占空比 = 250 / 1000 = 25%*/
	TIM_OC1Init(TIM1,&TIMOCInitStruct);
	TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);								/*开启预装载，在更新时间后才会重新装载数值*/		
 
	/*刹车和死区结构体配置*/
	TIMBDTRInitStruct.TIM_OSSRState = TIM_OSSRState_Enable;							/*运行模式下“关闭模式”选择 = 1*/
	TIMBDTRInitStruct.TIM_OSSIState = TIM_OSSIState_Enable;							/*空闲模式下“关闭模式”选择 = 1*/
	TIMBDTRInitStruct.TIM_LOCKLevel = TIM_LOCKLevel_1;								/*锁定级别1，见参考手册*/
	TIMBDTRInitStruct.TIM_DeadTime = 0x80;											/*死区时间：12.8ms*/
	TIMBDTRInitStruct.TIM_Break = TIM_Break_Enable;									/*开启刹车功能*/
	TIMBDTRInitStruct.TIM_BreakPolarity = TIM_BreakPolarity_Low;					/*刹车输入低电平有效，如果引脚检测到高电平则会停止PWM的输出，不会产生任何波形*/
	TIMBDTRInitStruct.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;				/*开启自动输出*/
	TIM_BDTRConfig(TIM1, &TIMBDTRInitStruct);
 
	TIM_Cmd(TIM1, ENABLE);  														/*使能定时器，计数器开始计数*/
	
	TIM_CtrlPWMOutputs(TIM1, ENABLE);												/*开启主输出*/
}

Timer.h
#ifndef _TIMER_H
#define _TIMER_H

 void GPIOConfig(void);
 void TIM1Config(void);
#endif

 spwm波

滤波效果不好，实际只需要一阶低通电路即可（10k,0.33uf）产生50HZ正弦波

 实际效果