【试用】F207ZE+ADC+DMA+USART+DAC加上DS18B20

#include "gd32f20x.h"

#include <stdlib.h>

#include <stdio.h>



/* Private define ------------------------------------------------------------*/

#define ADC1_DR_Address ((uint32_t)0x4001244C)

/* Private variables ---------------------------------------------------------*/

float ADC_Value;

int i;

float vu16Temperature;

__IO uint16_t ADCConvertedValue;



ADC_InitPara ADC_InitStructure;

DAC_InitPara DAC_InitStructure;

DMA_InitPara DMA_InitStructure;

/* Private function ----------------------------------------------------------*/

void RCC_Configuration(void);

void GPIO_Configuration(void);

void USART_Configuration(void);

void ADC_Configuration(void);

void Dac1_Init(void);

void Dac1_Set_Vol(u16 vol);



#ifdef __GNUC__

  /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf

     set to 'Yes') calls __io_putchar() */

  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)

#else

  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)

#endif

/* __GNUC__ */



/**

  * [url=home.php?mod=space&uid=247401]@brief[/url]  Main program.

  * @param  None

  * @retval None

  */

int main(void)

{

    /* Config System clocks --------------------------------------------------*/

    RCC_Configuration();

    /* Config GPIO ports -----------------------------------------------------*/

    GPIO_Configuration();

    USART_Configuration();

    ADC_Configuration();

          Dac1_Set_Vol(1500);

    //while(ADC_GetBitState(ADC1,ADC_FLAG_EOC) != SET);

    //ADC_Value = ADC_GetConversionValue(ADC1);

    vu16Temperature = ADCConvertedValue*3.3/4096;

    printf("\n\rTemperature %f\n\r",vu16Temperature);

    while (1);

}



/**

  * [url=home.php?mod=space&uid=247401]@brief[/url]  Configure system clocks.

  * @param  None

  * @retval None

  */

void RCC_Configuration(void)

{

    /* ADCCLK = PCLK2/6 */

    RCC_ADCCLKConfig(RCC_ADCCLK_APB2_DIV6);



    /* Enable DMA1 and GPIOC clock */

    RCC_APB2PeriphClock_Enable( RCC_APB2PERIPH_GPIOA|RCC_APB2PERIPH_AF , ENABLE);

    /* Enable USART1 APB clock */

    RCC_APB2PeriphClock_Enable( RCC_APB2PERIPH_USART1 , ENABLE );

    /* Enable ADC1 clock */

    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_ADC1, ENABLE);

          RCC_AHBPeriphClock_Enable(RCC_AHBPERIPH_DMA1, ENABLE);

}



/**

  * [url=home.php?mod=space&uid=247401]@brief[/url]  Configure GPIO ports.

  * @param  None

  * @retval None

  */

void GPIO_Configuration(void)

{

    GPIO_InitPara GPIO_InitStructure;



    GPIO_InitStructure.GPIO_Pin = GPIO_PIN_3;

    GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AIN;

    GPIO_InitStructure.GPIO_Speed = GPIO_SPEED_50MHZ;

    GPIO_Init(GPIOC, &GPIO_InitStructure);

}



/**

  * [url=home.php?mod=space&uid=247401]@brief[/url]  Configure ADC Configuration.

  * @param  None

  * @retval None

  */

void ADC_Configuration(void)

{

          DMA_DeInit(DMA1_CHANNEL1);

    DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;

    DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADCConvertedValue;

    DMA_InitStructure.DMA_DIR = DMA_DIR_PERIPHERALSRC;

    DMA_InitStructure.DMA_BufferSize = 1;

    DMA_InitStructure.DMA_PeripheralInc = DMA_PERIPHERALINC_DISABLE;

    DMA_InitStructure.DMA_MemoryInc = DMA_MEMORYINC_DISABLE;

    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PERIPHERALDATASIZE_HALFWORD;

    DMA_InitStructure.DMA_MemoryDataSize = DMA_MEMORYDATASIZE_HALFWORD;

    DMA_InitStructure.DMA_Mode = DMA_MODE_CIRCULAR;

    DMA_InitStructure.DMA_Priority = DMA_PRIORITY_HIGH;

    DMA_InitStructure.DMA_MTOM = DMA_MEMTOMEM_DISABLE;

    DMA_Init(DMA1_CHANNEL1, &DMA_InitStructure);

    /* Enable DMA1 channel1 */

    DMA_Enable(DMA1_CHANNEL1, ENABLE);

    /* Config ADC1 --------------------------------------------------------------*/

    ADC_InitStructure.ADC_Mode_Scan = DISABLE;

    ADC_InitStructure.ADC_Mode_Continuous = DISABLE;

    ADC_InitStructure.ADC_Trig_External = ADC_EXTERNAL_TRIGGER_MODE_NONE;

    ADC_InitStructure.ADC_Data_Align = ADC_DATAALIGN_RIGHT;

    ADC_InitStructure.ADC_Mode = ADC_MODE_INDEPENDENT;

    ADC_InitStructure.ADC_Channel_Number = 1;

    ADC_Init(ADC1,&ADC_InitStructure);



    /* ADC1 regular channels configuration */

    ADC_RegularChannel_Config(ADC1,ADC_CHANNEL_13, 1, ADC_SAMPLETIME_239POINT5);



    ADC_ExternalTrigConv_Enable(ADC1,ENABLE);

    ADC_TempSensorVrefint_Enable(ENABLE);

    /* Enable ADC1 DMA */

    ADC_DMA_Enable(ADC1, ENABLE);

    /* Enable ADC1 */

    ADC_Enable(ADC1,ENABLE);

    ADC_Calibration(ADC1);



    /* Start ADC1 Software Conversion */

    ADC_SoftwareStartConv_Enable(ADC1,ENABLE);

}





/**

  * @brief  Configure USART parameter.

  * @param  None

  * @retval None

  */

void USART_Configuration(void)

{

    USART_InitPara USART_InitStructure;

          GPIO_InitPara  GPIO_InitStructure;

    RCC_APB2PeriphClock_Enable( RCC_APB2PERIPH_GPIOB, ENABLE );

    /* Enable USART1 APB clock */

    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_USART1, ENABLE );

    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_AF, ENABLE);

    GPIO_InitStructure.GPIO_Pin     = GPIO_PIN_6 ;

    GPIO_InitStructure.GPIO_Mode    = GPIO_MODE_AF_PP;

    GPIO_InitStructure.GPIO_Speed   = GPIO_SPEED_50MHZ;

    GPIO_Init( GPIOB , &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin     = GPIO_PIN_7;

    GPIO_InitStructure.GPIO_Mode    = GPIO_MODE_IN_FLOATING;;

    GPIO_Init( GPIOB , &GPIO_InitStructure);



    GPIO_PinRemapConfig(GPIO_REMAP_USART1, ENABLE);

    USART_DeInit( USART1 );

    USART_InitStructure.USART_BRR = 115200;

    USART_InitStructure.USART_WL = USART_WL_8B;

    USART_InitStructure.USART_STBits = USART_STBITS_1;

    USART_InitStructure.USART_Parity = USART_PARITY_RESET;

    USART_InitStructure.USART_HardwareFlowControl = USART_HARDWAREFLOWCONTROL_NONE;

    USART_InitStructure.USART_RxorTx = USART_RXORTX_RX | USART_RXORTX_TX;

    USART_Init(USART1, &USART_InitStructure);

    /* USART enable */

    USART_Enable(USART1, ENABLE);

}



void Dac1_Init(void)

{  

  GPIO_InitPara  GPIO_InitStructure;

        DAC_InitPara DAC_InitType;

        

  RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_GPIOA, ENABLE);//??GPIOA??

  RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_DAC, ENABLE);//??DAC??

           

  GPIO_InitStructure.GPIO_Pin = GPIO_PIN_5;

  GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AIN;//????

  //GPIO_InitStructure.GPIO_PuPd = GPIO_MODE_OUT_PP;//??

  GPIO_Init(GPIOA, &GPIO_InitStructure);//???



        DAC_InitStructure.DAC_Trigger=DAC_TRIGGER_NONE;        //??????? TEN1=0

        DAC_InitType.DAC_WaveType=DAC_WAVEGENE_NONE;//???????

        DAC_InitType. DAC_LFSRNoise_AmplitudeTriangle=DAC_LFSR_BIT0 ;//???????

        DAC_InitType.DAC_OutputBuffer=DAC_OUTPUTBUFFER_DISABLE  ;        //DAC1?????? BOFF1=1

  DAC_Init(DAC_CHANNEL_2,&DAC_InitType);         //???DAC??1



        DAC_DMA_Enable(DAC_CHANNEL_2, ENABLE);  //??DAC??1

  

  DAC_SetChannel1Data(DAC_ALIGN_12B_R, 0);  //12??????????DAC?

}

//????1????

//vol:0~3300,??0~3.3V

void Dac1_Set_Vol(u16 vol)

{

        double temp=vol;

        temp/=1000;

        temp=temp*4096/3.3;

        DAC_SetChannel1Data(DAC_ALIGN_12B_R,temp);//12??????????DAC?

}





/**

  * @brief  Retarget the C library printf function to the USART.

  * @param  None

  * @retval None

  */

PUTCHAR_PROTOTYPE

{

    /* Loop until transmit data register is empty */

    while (USART_GetBitState( USART1 , USART_FLAG_TBE) == RESET)

    {

    }

    /* Place your implementation of fputc here */

    USART_DataSend( USART1 , (uint8_t) ch );

    return ch;

}