eMiniBoard之PWM驱动无源蜂鸣器+ADC调整LED亮度

void BSP_LED_Configure(void);

void BSP_KEY_Configure(void);





void led2on()

{

    TIM_SelectOCxM  (TIM2, TIM_Channel_2, TIM_OCMode_PWM1);

    TIM_CCxCmd      (TIM2, TIM_Channel_2, TIM_CCx_Enable);

}

void led2off()

{

    TIM_SelectOCxM  (TIM2, TIM_Channel_2, TIM_OCMode_Inactive);

    TIM_CCxCmd      (TIM2, TIM_Channel_2, TIM_CCx_Enable);

}

void led3on()

{

    TIM_SelectOCxM  (TIM3, TIM_Channel_1, TIM_OCMode_PWM1);

    TIM_CCxCmd      (TIM3, TIM_Channel_1, TIM_CCx_Enable);

}

void led3off()

{

    TIM_SelectOCxM  (TIM3, TIM_Channel_1, TIM_OCMode_Inactive);

    TIM_CCxCmd      (TIM3, TIM_Channel_1, TIM_CCx_Enable);

}

void led4on()

{

    TIM_SelectOCxM  (TIM3, TIM_Channel_2, TIM_OCMode_PWM1);

    TIM_CCxCmd      (TIM3, TIM_Channel_2, TIM_CCx_Enable);

}

void led4off()

{

    TIM_SelectOCxM  (TIM3, TIM_Channel_2, TIM_OCMode_Inactive);

    TIM_CCxCmd      (TIM3, TIM_Channel_2, TIM_CCx_Enable);

}





void closeLED()

{

    LD6_off();

    led2off();

    led3off();

    led4off();

}





void initLEDPWM(u16 psc, u16 arr)

{

    GPIO_InitTypeDef        GPIO_InitStructure;

    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

    TIM_OCInitTypeDef       TIM_OCInitStructInit;

    

    COMMON_EnableIpClock(emCLOCK_GPIOB);

    COMMON_EnableIpClock(emCLOCK_TIM2);

    COMMON_EnableIpClock(emCLOCK_TIM3);

    

    GPIO_Mode_AF_PP_20MHz_Init(GPIOB, GPIO_Pin_3, EXTI_MAPR_TIM2_PARTIAL1, GPIO_AF_2);

    GPIO_Mode_AF_PP_20MHz_Init(GPIOB, GPIO_Pin_4, EXTI_MAPR_TIM3_PARTIAL, GPIO_AF_1);

    GPIO_Mode_AF_PP_20MHz_Init(GPIOB, GPIO_Pin_5, EXTI_MAPR_TIM3_PARTIAL, GPIO_AF_1);

    GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP; 

    GPIO_Init(GPIOB, &GPIO_InitStructure);

    

    TIM_TimeBaseStructure.TIM_Period = arr; 

    TIM_TimeBaseStructure.TIM_Prescaler = psc; 

    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; 

    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 

    TIM_TimeBaseStructure.TIM_RepetitionCounter=0;

    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); 

    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

    

    TIM_OCStructInit(&TIM_OCInitStructInit);

    TIM_OCInitStructInit.TIM_OCMode = TIM_OCMode_PWM1; 

    TIM_OCInitStructInit.TIM_OutputState = TIM_OutputState_Enable;

    TIM_OCInitStructInit.TIM_Pulse = arr >> 1;

    TIM_OCInitStructInit.TIM_OCPolarity = TIM_OCPolarity_Low;

    TIM_OC2Init(TIM2, &TIM_OCInitStructInit);

    TIM_OC1Init(TIM3, &TIM_OCInitStructInit);

    TIM_OC2Init(TIM3, &TIM_OCInitStructInit);

    

    TIM_Cmd(TIM2, ENABLE);

    TIM_Cmd(TIM3, ENABLE);

}

void initBuzzer(u16 prescaler)

{

    GPIO_InitTypeDef        GPIO_InitStructure;

    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

    TIM_OCInitTypeDef       TIM_OCInitStructInit;

    

    COMMON_EnableIpClock(emCLOCK_GPIOA);

    COMMON_EnableIpClock(emCLOCK_TIM1);

    

    GPIO_Mode_AF_PP_20MHz_Init(GPIOA, GPIO_Pin_8, NO_REMAP, GPIO_AF_2);

    GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_8;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP; 

    GPIO_Init(GPIOA, &GPIO_InitStructure);

    

    TIM_TimeBaseStructure.TIM_Period = 999; 

    TIM_TimeBaseStructure.TIM_Prescaler = prescaler; 

    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; 

    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 

    TIM_TimeBaseStructure.TIM_RepetitionCounter=0;

    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); 

    

    TIM_OCStructInit(&TIM_OCInitStructInit);

    TIM_OCInitStructInit.TIM_OCMode = TIM_OCMode_PWM2; 

    TIM_OCInitStructInit.TIM_OutputState = TIM_OutputState_Enable;

    TIM_OCInitStructInit.TIM_Pulse = 0;

    TIM_OCInitStructInit.TIM_OCPolarity = TIM_OCPolarity_Low;

    TIM_OC1Init(TIM1, &TIM_OCInitStructInit);

    TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable); 

    

    TIM_CtrlPWMOutputs(TIM1, ENABLE);

}

RCC_ClocksTypeDef rcc_clocks;





void main()

{

        RCC_GetClocksFreq(&rcc_clocks);

        initBuzzer(rcc_clocks.SYSCLK_Frequency / 2000000 - 1);        

        //...........

}

void initGPIO_ADC()

{

    GPIO_InitTypeDef GPIO_InitStructure;

    

    COMMON_EnableIpClock(emCLOCK_GPIOA);

    

    GPIO_InitStructure.GPIO_Pin  =  GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;

    GPIO_Init(GPIOA, &GPIO_InitStructure);

}





void initADC()

{

    ADC_InitTypeDef ADC_InitStructure;

    DMA_InitTypeDef DMA_InitStructure;

    

    COMMON_EnableIpClock(emCLOCK_ADC1);

    COMMON_EnableIpClock(emCLOCK_DMA1);

    

    initGPIO_ADC();

    

    DMA_DeInit(DMA1_ch1);

    DMA_InitStructure.PeripheralBaseAddr = (u32)&(ADC1->DR);

    DMA_InitStructure.MemoryBaseAddr = (u32)&ADCtemp[0];

    DMA_InitStructure.DIR = DMA_DIR_PeripheralSRC;

    DMA_InitStructure.BufferSize = 3;

    DMA_InitStructure.PeripheralInc = DMA_PeripheralInc_Disable;

    DMA_InitStructure.MemoryInc = DMA_MemoryInc_Enable;

    DMA_InitStructure.PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;

    DMA_InitStructure.MemoryDataSize = DMA_MemoryDataSize_Word;

    DMA_InitStructure.Mode = DMA_Mode_Circular;

    DMA_InitStructure.Priority = DMA_Priority_High;

    DMA_InitStructure.M2M = DMA_M2M_Disable;

    DMA_Init(DMA1_ch1, &DMA_InitStructure);

    DMA_Cmd(DMA1_ch1, ENABLE);

    

    ADC_InitStructure.ADC_Mode = ADC_CR_CONTINUE;

    ADC_InitStructure.ADC_PRESCARE = ADC_PCLK2_PRESCARE_16;

    ADC_InitStructure.ADC_ExternalTrigConv = ADC1_ExternalTrigConv_T1_CC1;

    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

    ADC_Init(ADC1, &ADC_InitStructure);

    

    ADC_RegularChannelConfig(ADC1, ADC_Channel_1,  1, ADC_Samctl_1_5);

    ADC_RegularChannelConfig(ADC1, ADC_Channel_4,  2, ADC_Samctl_1_5);

    ADC_RegularChannelConfig(ADC1, ADC_Channel_5,  3, ADC_Samctl_1_5);

    

    ADC_ITConfig(ADC1, ADC_IT_EOC, DISABLE);

    ADC_Cmd(ADC1, ENABLE);

    ADC_DMACmd(ADC1, ENABLE);

    ADC1->CFGR |= 0x04;

    

    ADC_SoftwareStartConvCmd(ADC1, ENABLE);

}