在主程序中调用一段DMA发送程序后led无法正确显示

2019-07-14 14:33发布

我把程序贴上了  各位大神帮我看看怎么回事现在的问题是  dma无法正常发送，我没调用send函数时，led能正常显示一旦调用了led都无法正确显示

#include "misc.h"
#include "stdio.h"
#include "math.h"
#include "STM32l1xx_adc.h"
#include "stm32l1xx_lcd.h"
#include "stm32l1xx_rcc.h"
#include "stm32l1xx_rtc.h"
#include "stm32l1xx_exti.h"
#include "stm32l1xx_pwr.h"
#include "stm32l1xx_syscfg.h"
#include "stm32l1xx_dbgmcu.h"
#include "stm32_tsl_api.h"
#include "stm32l15x_tsl_ct_acquisition.h"
#include "led.h"
#include "ClockConfig.h"
#include "IIC_Communication.h"
#include "afe4400.h"
#include "coef_filter.h"
#include "Usart.h"
#define N 50
#define sample_rate 250
#define Divided_Fre 2
#define High_pass_Orders 667
#define Low_pass_Orders 128
unsigned char Disp_Flag,readDataFlag;
int send(void);
long AFE44xx_SPO2_Data_buf[6],test,coef_IR[High_pass_Orders],coef_Red[High_pass_Orders],coef_low_IR[Low_pass_Orders],coef_low_Red[Low_pass_Orders];
float XRed[sample_rate],YIRed[sample_rate];
//uint32_t ;
//void delay_ms(uint32_t ms);
//******main*******//
int main(void)
{
                     unsigned char i,k,Tmax,x,z,Win_Num,Str_Voltage[9]={0},spo2_value[9]={0};
   //unsigned int Fs;
                     unsigned int Freq_Dvider4;
   int T_data;
                     float Ynt=0.0,Ynt_Red,Fs,Lmax,Lmax_pre,Lmax_bac,Ynt_Disp,XRed_Sum,YIRed_Sum,XRed_Avg,YRed_Avg,R;//XRed[sample_rate],YIRed[sample_rate];
   double Lxy,Lxx,Lyy;
                     uint32_t j,T_pre,T_bac=1;
   uint16_t n;
   n=0;readDataFlag=0;
   Freq_Dvider4=1;
   x=0;k=0;z=0;
                     ClockConfig();
                     Led_Init();                         //³õÊ¼»¯ÓëLEDÁ¬½ÓµÄÓ²¼þ½Ó¿Ú
                     I2C_Configuration();
                     OLED_Init();
                     OLED_CLS();//ÇåÆÁ
                     AFE44xx_PowerOn_Init();
                     for(i=0;i<5;i++)
                     {
                     OLED_ShowCN_12x12(2+i*12,0,i);//??????
                     }
                     for(i=5;i<10;i++)
                     {
                     OLED_ShowCN_12x12(2+(i-5)*12,2,i);//??????
                     }
                     while(1)
                     {
                              if(readDataFlag)
                     {
                              readDataFlag = 0;
                              AFE44xx_SPO2_Data_buf[0] = AFE44xx_Reg_Read(0x2A);  //read RED data
                              AFE44xx_SPO2_Data_buf[1] = AFE44xx_Reg_Read(43);  //read Ambient data
                              AFE44xx_SPO2_Data_buf[2] = AFE44xx_Reg_Read(44);  //read IR Data
                              AFE44xx_SPO2_Data_buf[3] = AFE44xx_Reg_Read(45);  //read Ambient Data
                              AFE44xx_SPO2_Data_buf[4] = AFE44xx_Reg_Read(0x2E);  //read RED - Ambient Data
                              AFE44xx_SPO2_Data_buf[5] = AFE44xx_Reg_Read(47);  //read IR - Ambient Data3
      /**************************************high pass filter*****************************************/
                              coef_IR[0]=AFE44xx_SPO2_Data_buf[5];
                              coef_Red[0]=AFE44xx_SPO2_Data_buf[4];
                              for(j=0;j<High_pass_Orders;j++)
                              {
                              Ynt=Ynt+B[j]*coef_IR[j];//IR
                              Ynt_Red=Ynt_Red+B[j]*coef_Red[j];//Red
                              }
                              // AFE44xx_SPO2_Data_buf[5]=Ynt;
                              for(j=0;j<High_pass_Orders-1;j++)
                              {
                              coef_IR[High_pass_Orders-1-j]=coef_IR[High_pass_Orders-1-j-1];//IR High_pass_Orders-1=933-1
                              coef_Red[High_pass_Orders-1-j]=coef_Red[High_pass_Orders-1-j-1];//Red
                              }
                              // Ynt_Disp=Ynt_Red+3000;
                              //Ynt_Disp=Ynt+200;
                              //Ynt_Disp=AFE44xx_SPO2_Data_buf[5];
                              Ynt_Disp=Ynt+3000;
            /**************************************low pass filter*****************************************/
                                    coef_low_IR[0]=(long)Ynt;
                              coef_low_Red[0]=(long)Ynt_Red;
                                    for(j=0;j<Low_pass_Orders;j++)
                              {
                                    Ynt=Ynt+coef_low_IR[j]*B_low[j];//IR
                                    Ynt_Red=Ynt_Red+coef_low_Red[j]*B_low[j]; //Red
                              }
                                    for(j=0;j<Low_pass_Orders-1;j++)
         {
                                    coef_low_IR[Low_pass_Orders-1-j]=coef_low_IR[Low_pass_Orders-1-j-1];
                                    coef_low_Red[Low_pass_Orders-1-j]=coef_low_Red[Low_pass_Orders-1-j-1];
                                       }

//                               Ynt=Ynt-3000;
//                               Ynt_Red=Ynt_Red-3000;
      /**************************************compute Heart rate*****************************************/
                              if(k<N)
                              {
                                       k++;
                                       if(Lmax<Ynt){Lmax=Ynt;Tmax=k;}//get the max value
                              }
                              else
                              {
                                       Win_Num++;
                                       if(Tmax>4&&Tmax<N-4)//¶Ô·åÖµ»®¶¨Çø¼ä
                                       {
            z++;
                                             if(z==1)
                                             { T_pre=Win_Num*N-N+Tmax;Lmax_pre=Lmax;}
                                             else if(z==2)
                                             { Lmax_bac=Lmax;
                                                      T_bac=Win_Num*N-N+Tmax;
                                                      T_data=T_bac-T_pre;
                                             if(T_data>125)
                                             {
                                                      z=0;
                                                      Win_Num=0;
                                                      if(fabs(Lmax_pre-Lmax_bac)<150)
                                                      {
                                                      Fs=((250.0/(T_bac-T_pre))*60.0);
      //******************ÏÔÊ¾ÐÄÂÊ**************/
                              Hex_to_dex_to_string((uint16_t)Fs,Str_Voltage,2);
                              OLED_ShowStr(60,2,Str_Voltage,3);                               //²âÊÔ6*12×Ö·û
                                                      }
                                             }
                                             else z=1;
         }
         }
      k=0;
                                    Lmax=0;
      }
//  //********************************************computer the spo2%***************************************************/
//

                              if(n<sample_rate)
                              {
                                       XRed[n]=Ynt;
                                       YIRed[n]=Ynt_Red;
         n++;
      XRed_Sum+=Ynt;
                                    YIRed_Sum+= Ynt_Red;
      }
                              else
                              {

                              n=0;
                              XRed_Avg=XRed_Sum/sample_rate*1.0;
                              YRed_Avg=YIRed_Sum/sample_rate*1.0;
                              for(j=0;j<sample_rate;j++)//
      {
                              Lxy=(XRed[j]-XRed_Avg)*(YIRed[j]-YRed_Avg)*1.0+Lxy;
                              Lxx=(XRed[j]-XRed_Avg)*(XRed[j]-XRed_Avg)*1.0+Lxx;
                              Lyy=(YIRed[j]-YRed_Avg)*(YIRed[j]-YRed_Avg)*1.0+Lyy;
      }
                              R=Lxy/sqrt(Lxx*Lyy)*100.0;
                              send（）；//我在此处调用
//**************ÏÔÊ¾ÑªÑõÖµ%************/
                              Hex_to_dex_to_string((uint16_t)R,spo2_value,5);
                              OLED_ShowStr(60,0,spo2_value,3);
                              Lxy=0.0;
                              Lxx=0.0;
                              Lyy=0.0;
                              XRed_Sum=0;
                              YIRed_Sum=0;
                              }
//                      if(n<sample_rate)
//                               {
//                                        XRed[n]=Ynt;
//                                        YIRed[n++]=Ynt_Red;
//                               }
//       else
//                               {
//                                        for(j=0;j<sample_rate;j++)
//                                        {
//       XRed_Sum=XRed[j]+XRed_Sum;
//       YIRed_Sum=YIRed[j]+YIRed_Sum;
//                                        }
//                                        n=0;
//                               XRed_Avg=XRed_Sum/sample_rate;
//                               YRed_Avg=YIRed_Sum/sample_rate;
//                               for(j=0;j<sample_rate;j++)//
//       {
//                               Lxy=(XRed[j]-XRed_Avg)*(YIRed[j]-YRed_Avg)+Lxy;
//                               Lxx=(XRed[j]-XRed_Avg)*(XRed[j]-XRed_Avg)+Lxx;
//                               Lyy=(YIRed[j]-YRed_Avg)*(YIRed[j]-YRed_Avg)+Lyy;
//       }
//                               R=Lxy/sqrt(Lxx*Lyy)*100;
//       //**************ÏÔÊ¾ÑªÑõÖµ%************/
//                               Hex_to_dex_to_string((uint16_t)R,spo2_value,5);
//                               OLED_ShowStr(60,0,spo2_value,3);
//                               XRed_Sum=0;
//                               YIRed_Sum=0;
//       }

  //*****************************PPG wave display***************************************************/

                              if((Freq_Dvider4++)%Divided_Fre==0)
                              {
                                    Freq_Dvider4=1;
                                    if(Disp_Flag==1){OLED_SetPos_x(x);Disp_Flag=0;}

                              OLED_Disp(x++,Ynt_Disp);
                              if(x==128)
                              {
                              x=0;
                              OLED_CLS_Wave();
                              }
                              }

                              Ynt_Red=0;
                              Ynt=0;
                     }
}
}
void EXTI0_IRQHandler(void)
{
      if(EXTI_GetITStatus(EXTI_Line0) != RESET)
      {
                     readDataFlag = 1;
                     test++;
                     if((test)%500==250)
                     GPIO_ResetBits(GPIOB,GPIO_Pin_12);
                     if((test)%500==0)
                     GPIO_SetBits(GPIOB,GPIO_Pin_12);
                     EXTI_ClearITPendingBit(EXTI_Line0);
      }
}

//************DMA通信*****************//
int send(void)
{
      float SendBuff[2];             //ÉèÖÃ·¢ËÍ»º³åÇø
      float Fs=0.0, R=0.0;
      RS232_Init(9600);             //³õÊ¼»¯RS232
      MYDMA_Config(DMA1_Channel7,(uint32_t)&USART2->DR,(uint32_t)SendBuff,8);
      DMA_ITConfig(DMA1_Channel7, DMA_IT_TC, ENABLE);
      AFE44xx_PowerOn_Init();
      while(1)
      {
                     SendBuff[0]=Fs;
                     SendBuff[1]=R;
                     USART_DMACmd(USART2,USART_DMAReq_Tx,ENABLE);
                     MYDMA_Enable(DMA1_Channel7);


                     while(DMA_GetITStatus(DMA1_FLAG_TC7)==RESET)
                     {

                     }
                     DMA_ClearITPendingBit(DMA1_FLAG_TC7);

      }
}

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