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#include "stm32f10x.h"
#include "usart.h"
#include "stm32f10x_it.h"
#include "adc.h"
#include "dma.h"
#include <stdlib.h>

u16 adcx,temp;
u8  table[5];
extern u16 cmar[16];

/*发送字符串*/

void USART1_Puts(unsigned char *str)
{
    while(*str)
    {
        USART_SendData(USART1, *str++);
       
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
    }
}

/*延时函数*/

void Delay(__IO u32 nCount)
{
 for(; nCount != 0; nCount--);
}

/*设置中断组*/
void NVIC_Configuration(void)
{

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2:2位抢占优先级，2位响应优先级

}

int main(void)
{

  SystemInit(); 
  NVIC_Configuration();
  USART1_Config();
  Adc_Init();
  dma_config(DMA1_Channel4);
  while(1)
  {
      Delay(1000000);
  adcx=DigitFilter(cmar,16);
  dma_start();
  adcx=(1.42 - adcx*3.3/4096)*1000/4.35 + 25;
  temp=adcx*330/4096;                      
  adcx = temp;
  table[0]=adcx / 100 + 0x30;
  table[1]='.';
  table[2]=adcx % 100/10 + 0x30;
  table[3]= adcx %10 + 0x30;
  table[4]='V';
  Delay(100000);
  USART1_Puts(table);
    Delay(1000000);

}
}