定时器模块_timer1设置PWM模式

Timer1属于高级定时器，在设置PWM模式的时候，必须加这一句话：使能PWM输出
TIM_CtrlPWMOutputs(TIM_1, ENABLE);

/*****************************************************************************
 * Function      : timer_GpioInit
 * Description   : gpio initialize for timer module.
*                       A8, A9  - TIM1_CH1, TIM1_CH2
                         A6, A7 -  TIM3_CH1, TIM3_CH2
                         B0, B1 -  TIM3_CH3, TIM3_CH4
 
 * Input         : void  
 * Output        : None
 * Return        :
 * Others        :
 * Record
 * 1.Date        : 20170307
 *   Author      : grant.hu
 *   Modification: Created function

*****************************************************************************/
static void timer_GpioInit(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    /* Enable clock for timer1, timer3 module */
    //RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

    /* GPIOB clock enable, Enable AFIO function */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);

    GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;   /* enable alternative function of GPIO */
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    
    GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 |GPIO_Pin_9;
    GPIO_Init(GPIOA, &GPIO_InitStructure);    
    
    GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_0 | GPIO_Pin_1;
    GPIO_Init(GPIOB, &GPIO_InitStructure);     
}


/*****************************************************************************
 * Function      : timer_SetFreDty
 * Description   : set input frequency and dutycycle for different channel
                            of different timer module.
 * Input         : TIM_TypeDef *TIM_TYPE  
                        uint16_t * pu16HZ      
                        uint8_t *u8Dty          
 * Output        : None
 * Return        :
 * Others        :
 * Record
 * 1.Date        : 20170307
 *   Author      : grant.hu
 *   Modification: Created function

*****************************************************************************/
static int timer_SetFreDty(TIM_TypeDef *TIM_TYPE, PT_tmrOper ptTmrOper)
{
    uint16_t u16HzTemp;
    uint16_t u16Period;
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    TIM_OCInitTypeDef        TIM_OCInitStructure;

    if(TIM_TYPE != TIM1 && TIM_TYPE != TIM3)
        return -1;
        
    u16HzTemp = (TIM_TYPE == TIM1)? (ptTmrOper->u16Fre[0]) : (ptTmrOper->u16Fre[1]);
    printf("timer HZ: %d\n", u16HzTemp);

    TIM_InternalClockConfig(TIM_TYPE);  
    /* TIMxCLK = 72MHZ,  timer module input clock = 72 MHZ/ (71 + 1) =  1Mhz */
    TIM_TimeBaseStructure.TIM_Prescaler = 71;    

    /* set timer frequency */
    u16Period = (uint16_t)((long)1000000 / u16HzTemp - 1);
    
    TIM_TimeBaseStructure.TIM_Period = u16Period;  
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1 ;   
    TIM_TimeBaseStructure.TIM_CounterMode   = TIM_CounterMode_Up;  
    TIM_TimeBaseInit(TIM_TYPE, &TIM_TimeBaseStructure);

    /* timer mode setting. */
    TIM_OCInitStructure.TIM_OCMode      = TIM_OCMode_PWM1;       
    TIM_OCInitStructure.TIM_OCPolarity  = TIM_OCPolarity_High;  
    
    if(TIM_TYPE == TIM1)
    {       
        /* TIM1, channel1 */
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
        TIM_OCInitStructure.TIM_Pulse = (ptTmrOper->u8Dty[0] * u16Period )/100;
        TIM_OC1Init(TIM_TYPE, &TIM_OCInitStructure);                       
        TIM_OC1PreloadConfig(TIM_TYPE, TIM_OCPreload_Enable);  

        /* TIM1, channel2 */
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
        TIM_OCInitStructure.TIM_Pulse = (ptTmrOper->u8Dty[1] * u16Period )/100;
        TIM_OC2Init(TIM_TYPE, &TIM_OCInitStructure);                       
        TIM_OC2PreloadConfig(TIM_TYPE, TIM_OCPreload_Enable);   

        // TODO:  this code must be add when config TIM1, TIM8, different with configure general timer
        TIM_CtrlPWMOutputs(TIM_TYPE, ENABLE);
    }
    else
    {
        /* TIM3, channel1 */
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
        TIM_OCInitStructure.TIM_Pulse = (ptTmrOper->u8Dty[2] * u16Period )/100;
        TIM_OC1Init(TIM_TYPE, &TIM_OCInitStructure);                       
        TIM_OC1PreloadConfig(TIM_TYPE, TIM_OCPreload_Enable);  

        /* TIM3, channel2 */
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
        TIM_OCInitStructure.TIM_Pulse = (ptTmrOper->u8Dty[3] * u16Period )/100;
        TIM_OC2Init(TIM_TYPE, &TIM_OCInitStructure);                       
        TIM_OC2PreloadConfig(TIM_TYPE, TIM_OCPreload_Enable);  

        /* TIM3, channel3 */
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
        TIM_OCInitStructure.TIM_Pulse = (ptTmrOper->u8Dty[4] * u16Period )/100;
        TIM_OC3Init(TIM_TYPE, &TIM_OCInitStructure);                       
        TIM_OC3PreloadConfig(TIM_TYPE, TIM_OCPreload_Enable);  
        
        /* TIM3, channel4 */
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
        TIM_OCInitStructure.TIM_Pulse = (ptTmrOper->u8Dty[5] * u16Period )/100;
        TIM_OC4Init(TIM_TYPE, &TIM_OCInitStructure);                       
        TIM_OC4PreloadConfig(TIM_TYPE, TIM_OCPreload_Enable);  
    }
                     
    TIM_ARRPreloadConfig(TIM_TYPE, ENABLE);                              
    TIM_Cmd(TIM_TYPE, ENABLE);   /* TIM4 enable counter */  

    return 0; }