#include "pwm.h"
#include "led.h"
//void TIM3_Int_Init(u16 arr,u16 psc)
//{
//TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
//NVIC_InitTypeDef NVIC_InitStructure;
//RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //①時鐘 TIM3 使能
////定時器 TIM3 初始化
//TIM_TimeBaseStructure.TIM_Period = arr; //設置自動重裝載寄存器周期的值
//TIM_TimeBaseStructure.TIM_Prescaler =psc; //設置時鐘頻率除數的預分頻值
//TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //設置時鐘分割
//TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM 向上計數
// TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //②初始化 TIM3
//TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //③允許更新中斷
////中斷優先級 NVIC 設置
//NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //TIM3 上升中斷
//NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占優先級 0 級
//NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //從優先級 3 級
//NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ 通道被使能
//NVIC_Init(&NVIC_InitStructure); //④初始化 NVIC 寄存器
//TIM_Cmd(TIM3, ENABLE); //⑤使能 TIM3
//}
//定時器 3 中斷服務程序⑥
//void TIM3_IRQHandler(void) //TIM3 中斷
//{
//if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //檢查 TIM3 更新中斷發生與否
//{
//TIM_ClearITPendingBit(TIM3, TIM_IT_Update ); //清除 TIM3 更新中斷標志
//LED1=!LED1;
//}
//}
void TIM3_PWM_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitSture;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //①使能 TIM3時鐘
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO,ENABLE);//①使能 GPIO 和 AFIO 復用功能時鐘
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8|GPIO_Pin_9;//端口配置 led0=PC8 led1=PC9
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;//復用推挽
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;//
GPIO_Init(GPIOC,&GPIO_InitStructure);//初始化GPIO
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Pin= GPIO_Pin_6|GPIO_Pin_5;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOC,&GPIO_InitStructure);
//映射
GPIO_PinRemapConfig( GPIO_FullRemap_TIM3 ,ENABLE);//映射
//定時器TIM3初始化
TIM_TimeBaseStructure.TIM_Period = arr; //設置自動重裝載寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //設置時鐘頻率除數的預分頻值
TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1; //設置時鐘分割
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM 向上計數
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);//初始化 TIN3
//初始化TIM3 PWM模式
TIM_OCInitSture.TIM_OCMode=TIM_OCMode_PWM1;//選擇 PWM 模式 1
TIM_OCInitSture.TIM_OutputState=TIM_OutputState_Enable;//比較輸出使能
TIM_OCInitSture.TIM_OCPolarity=TIM_OCPolarity_High;//輸出極性高
TIM_OC3Init(TIM3,&TIM_OCInitSture);//④初始化外設 TIM3 OC3
TIM_OCInitSture.TIM_OCMode=TIM_OCMode_PWM1;
TIM_OCInitSture.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitSture.TIM_OCPolarity= TIM_OCPolarity_High;
TIM_OC4Init(TIM3,&TIM_OCInitSture);//④初始化外設 TIM3 OC4
TIM_OC3PreloadConfig( TIM3,TIM_OCPreload_Enable);//使能預裝載寄存器
TIM_OC4PreloadConfig( TIM3,TIM_OCPreload_Enable);
TIM_Cmd(TIM3, ENABLE); //⑤使能 TIM3
}
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