include "stm32f10x.h"
BitAction bbt=0; //定義一個位變數 bbt,並清0
u16 i;
int main(void){
u16
InitValue,Pre_Divide,ZKB;
SystemInit(); //系統時鐘初始化，調用該函數後，系統時鐘為72M，函數原形在system_stm32f10x.c中
GPIO_init();
//****TIM1_PWM波1通道設置******************************************
InitValue=7200; //初值1000
Pre_Divide=1;
//預分頻1
ZKB=1200; //占空比
TIM1_PWM_1_init(InitValue,Pre_Divide,ZKB);
TIM1->CCR1=2400; //修改占空比
//*************************************************************************//
while(1)
{ //
}
}
//這是sysinit.c 系統程式
#include "stm32f10x.h"
void GPIO_init()
{
GPIO_InitTypeDef GPIO_InitStructure; //聲明埠結構，需要放在前面
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB,ENABLE);
// 開啟相對應的clock
source Port A and PortB
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
//**************埠A8,A9,A10是TIM1_PWM波的輸出端***************************
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode =
GPIO_Mode_AF_PP; //PWM波設為複用推挽輸出
GPIO_InitStructure.GPIO_Speed =
GPIO_Speed_50MHz; //埠頻率可設為2，10，50
GPIO_Init(GPIOA,
&GPIO_InitStructure); //啟動A埠
//*************埠B13,B14,B15是TIM1_PWM波的互補輸出端**********************
GPIO_InitStructure.GPIO_Pin =
GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; //埠頻率可設為2，10，50
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP; //PWM波的複用推挽輸出
GPIO_Init(GPIOB,&GPIO_InitStructure);
//啟動B埠
}
//***TIM1_PWM 1通道初始化******************************************
void TIM1_PWM_1_init(u16 InitValue, u16 Pre_Divide,
u16 CCR1_Val){
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,
ENABLE);
TIM_TimeBaseStructure.TIM_Period =InitValue;
TIM_TimeBaseStructure.TIM_Prescaler
=Pre_Divide-1;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode =
TIM_CounterMode_Down;
TIM_TimeBaseStructure.TIM_RepetitionCounter=0;
TIM_TimeBaseInit(TIM1,
&TIM_TimeBaseStructure);
TIM_ARRPreloadConfig(TIM1,ENABLE); //使能TIM1在ARR上的預裝載寄存器
TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;// 選擇計時器模式 TI脈衝寬度調製模式1
TIM_OCInitStructure.TIM_OutputState =
TIM_OutputState_Enable; //選擇輸出比較狀
TIM_OCInitStructure.TIM_OutputNState =
TIM_OutputNState_Enable;//選擇互補輸出比較狀態
TIM_OCInitStructure.TIM_OCPolarity
= TIM_OCPolarity_High; //選擇輸出極性
TIM_OCInitStructure.TIM_OCNPolarity
= TIM_OCNPolarity_High;//選擇互補輸出極性
TIM_OCInitStructure.TIM_Pulse = CCR1_Val; //設置待裝入捕獲比較寄存器的脈衝值
TIM_OC1Init(TIM1, &TIM_OCInitStructure);//捕獲比較匹配器結構1通道賦值
TIM_OC1PreloadConfig(TIM1,
TIM_OCPreload_Enable); //使能TIM1在CCR1上的預裝載寄存器
//死區設置
TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable；
//TIM1_OSSRState設置在運行模式下非工作狀態選項
TIM_BDTRInitStructure.TIM_OSSIState =
TIM_OSSIState_Enable;
//TIM1_OSSIState設置在空閒模式下非工作狀態選項(使能TIM1 OSSI狀態)
TIM_BDTRInitStructure.TIM_LOCKLevel =
TIM_LOCKLevel_OFF;
//TIM1_LOCKLevel設置了鎖電平參數(不鎖任何位)
TIM_BDTRInitStructure.TIM_DeadTime = 0x90;
//這裡調整死區大小0-0xff,TIM1_DeadTIM1指定了輸出打開和關閉狀態之間的延時
TIM_BDTRInitStructure.TIM_Break=TIM_Break_Disable;
//TIM1_Break使能或者失能TIM1刹車輸入(失能TIM1刹車輸入)
TIM_BDTRInitStructure.TIM_BreakPolarity =
TIM_BreakPolarity_High;
//TIM1_BreakPolarity設置TIM1刹車輸入管腳極性（TIM1刹車輸入管腳極性高）
TIM_BDTRInitStructure.TIM_AutomaticOutput=TIM_AutomaticOutput_Enable;
//TIM1_AutomaticOutput使能或者失能自動輸出功能（自動輸出功能使能）
TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);
//(設置刹車特性，死區時間，鎖電平，OSSI，OSSR狀態和AOE（自動輸出使能）
TIM_Cmd(TIM1, ENABLE); //使能或者失能指定的
TIM_CtrlPWMOutputs(TIM1, ENABLE); //使能或者失能TIM1外設的主輸出
}
