實(shí)驗(yàn)現(xiàn)象：輸出頻率為10K

/****************************************************************************************
*函 數(shù) 名:bsp_InitTimer1GPIO
*函數(shù)功能:初始化定時(shí)器1相關(guān)IO
*形    參:無
*返 回 值:無
*****************************************************************************************/


void bsp_InitTimer1GPIO(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOE,ENABLE);/*使能GPIOE的時(shí)鐘*/

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;/*復(fù)用*/
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;/*推挽輸出*/
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;/**/
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;/**/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14;
GPIO_Init(GPIOE,&GPIO_InitStructure);/*初始化IO*/

GPIO_PinAFConfig(GPIOE,GPIO_PinSource8,GPIO_AF_TIM1);/*復(fù)用*/
GPIO_PinAFConfig(GPIOE,GPIO_PinSource9,GPIO_AF_TIM1);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource10,GPIO_AF_TIM1);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource11,GPIO_AF_TIM1);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource12,GPIO_AF_TIM1);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource13,GPIO_AF_TIM1);
GPIO_PinAFConfig(GPIOE,GPIO_PinSource14,GPIO_AF_TIM1);
}


/****************************************************************************************
*函 數(shù) 名:
*函數(shù)功能:
*形    參:
*返 回 值:
*****************************************************************************************/
void bsp_Inittimer1(void)
{
uint16_t arr,ccr1,ccr2,ccr3,ccr4;
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStrecture;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);/*使能定時(shí)器1的時(shí)鐘*/


arr = SystemCoreClock/10000;/*10K*/
ccr1 = arr/5;/*占空比20%*/
ccr2 = arr/4;/*占空比25%*/
ccr3 = arr/3;/*占空比33%*/
ccr4 = arr/2;/*占空比50%*/

bsp_InitTimer1GPIO();/*初始化IO口*/

TIM_TimeBaseInitStrecture.TIM_Period = arr;/*設(shè)置自動重裝*/
TIM_TimeBaseInitStrecture.TIM_Prescaler = 0;/*不分頻*/
TIM_TimeBaseInitStrecture.TIM_ClockDivision = TIM_CKD_DIV1;/**/
TIM_TimeBaseInitStrecture.TIM_CounterMode = TIM_CounterMode_Up;/*向上計(jì)數(shù)*/
TIM_TimeBaseInitStrecture.TIM_RepetitionCounter = 0;/**/
TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStrecture);/*初始化*/



TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;/*設(shè)置PWM模式*/
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;/*起始輸出為低*/
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;/*互補(bǔ)通道使能*/
TIM_OCInitStructure.TIM_OutputNState  = TIM_OutputNState_Enable;/*互補(bǔ)通道使能*/
TIM_OCInitStructure.TIM_Pulse = ccr1;/*比較寄存器設(shè)置*/
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;/**/
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;/*輸出空閑狀態(tài)1*/
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;/**/

TIM_OC1Init(TIM1,&TIM_OCInitStructure);/*初始化通道1*/

TIM_OCInitStructure.TIM_Pulse = ccr2;/*設(shè)置比較寄存器*/
TIM_OC2Init(TIM1,&TIM_OCInitStructure);/*初始化通道2*/

TIM_OCInitStructure.TIM_Pulse = ccr3;/*設(shè)置比較寄存器*/
TIM_OC3Init(TIM1,&TIM_OCInitStructure);/*初始化通道3*/

TIM_OCInitStructure.TIM_Pulse = ccr4;/*設(shè)置比較寄存器*/
TIM_OC4Init(TIM1,&TIM_OCInitStructure);/*初始化通道4*/

TIM_Cmd(TIM1,ENABLE);/*計(jì)數(shù)使能*/
TIM_CtrlPWMOutputs(TIM1,ENABLE);/*輸出使能*/

}

/*
*********************************************************************************************************
* 函 數(shù) 名: main
* 功能說明: c程序入口
* 形    參：無
* 返 回 值: 錯(cuò)誤代碼(無需處理)
*********************************************************************************************************
*/
int main(void)
{
/*
ST固件庫中的啟動文件已經(jīng)執(zhí)行了 SystemInit() 函數(shù)，該函數(shù)在 system_stm32f4xx.c 文件，主要功能是
配置CPU系統(tǒng)的時(shí)鐘，內(nèi)部Flash訪問時(shí)序，配置FSMC用于外部SRAM
*/
bsp_Init();//初始化定時(shí)器
/* 進(jìn)入主程序循環(huán)體 */
while (1)
{

}
}