STC15系列单片机TSL1401线性CCD例程

1、STC15系列单片机TSL1401线性CCD例程（带PID自适应曝光程序）/*/*/*WrittenBy/*/*/#include<>#include<>#include<>/数据变量定义/=externuint8Time0flag_10ms;externuint8Time0flag_20ms;uint8Pixel128;/具体函数实现/=voidmain()uint8i=0,send_data_cnt=0;uint8*pixel_pt;Timer0_Init();Timer0_Enable();Usart1_Init(115200);Usart1_ENAB

2、LE();CCD_GPIO_Init();pixel_pt=Pixel;for(i=0;i<138;i+)*pixel_pt+=0;while(1)if(Time0flag_20ms=1)Time0flag_20ms=0;CCD_ImageCapture(Pixel);CalculateIntegrationTime();if(+send_data_cnt>=5)send_data_cnt=0;SendlmageData(Pixel);)LED1_Flag();/Show_ADC();)/*/*/*WrittenBy/*/*/#include<>/数据变量定义/=uin

3、t8Show30=0;/具体函数实现/=voidAdc_lnit()(P1ASF|=0x08;ADC_RES=0;ADC_RESL=0;ADC_CONTR=ADC_POWER|ADC_SPEEDLL;P1M0&=0x08;P1M1|=0x08;DelayAdc(2);)uint16GetAdc(uint8Channel)(uint16adc;ADC_CONTR=ADC_POWER|ADC_SPEEDLL|Channel|ADC_START;_nop_();_nop_();_nop_();_nop_();while(!(ADC_CONTR&ADC_FLAG);ADC_CONTR&

4、amp;=ADC_FLAG;adc=ADC_RES;adc=adc<<2;adc+=ADC_RESL;adc=(adc*;/三位的整数，max=returnadc;)voidShow_ADC()(floatshow;show=GetAdc(3);sprintf(Show,"VCC=%",show);Usart1_SendString(Show);)/*/*/*WrittenBy/*/*/#include<>/数据变量定义/=/具体函数实现/=voidCCD_GPIO_Init()(P2M0&=0x03;/P20CLK准双向口P2M1&

5、=0x03;/P21SI)voidCCD_StartIntegration()(uint8i;CCD_SI=1;Delaynus(1);CCD_CLK=1;Delaynus(1);CCD_SI=0;Delaynus(1);CCD_CLK=0;for(i=0;i<127;i+)(Delaynus(2);CCD_CLK=1;Delaynus(2);CCD_CLK=0;Delaynus(2);CCD_CLK=1;Delaynus(2);CCD_CLK=0;voidCCD_ImageCapture(uint8*ImageData)uint8i;CCD_SI=1;Delaynus(20);CCD_

6、CLK=1;Delaynus(20);CCD_SI=0;Delaynus(30);for(i=0;i<250;i+)/更改250,让CCD勺图像看上去比较平滑，Delaynus(1);/200ns/把该值改大或者改小达到自己满意的结果。for(i=0;i<128;i+)Delaynus(30);CCD_CLK=1;Delaynus(30);*ImageData=GetAdc(3)+90;/通道7ImageData+;CCD_CLK=0;Delaynus(30);CCD_CLK=1;Delaynus(30);CCD_CLK=0;uint8PixelAverage(uint8len,u

7、int8*Data)uint8i;uint16sum;for(i=0;i<len;i+)sum=sum+*Data+;return(uint8)(sum/len);uint8IntegrationTime=10;voidCalculateIntegrationTime()externuint8Pixel128;/*128个像素点的平均AD值*/uint8PixelAverageValue;/*128个像素点的平均电压值的10倍*/uint8PixelAverageVoltage;/*设定目标平均电压值，实际电压的10倍*/int16TargetPixelAverageVoltage=20

8、;/*设定目标平均电压值与实际值的偏差，实际电压的10倍*/int16PixelAverageVoltageError=0;/*设定目标平均电压值允许的偏差，实际电压的10倍*/int16TargetPixelAverageVoltageAllowError=2;/*计算128个像素点的平均AD彳！*/PixelAverageValue=PixelAverage(128,Pixel);/*计算128个像素点的平均电压值,实际值的10倍*/PixelAverageVoltage=(uint8)(int16)PixelAverageValue*25/194);PixelAverageVoltage

9、Error=TargetPixelAverageVoltage-PixelAverageVoltage;if(PixelAverageVoltageError<-TargetPixelAverageVoltageAllowError)PixelAverageVoltageError=0-PixelAverageVoltageError;PixelAverageVoltageError/=5;if(PixelAverageVoltageError>10)PixelAverageVoltageError=10;IntegrationTime-=PixelAverageVoltageEr

10、ror;if(PixelAverageVoltageError>TargetPixelAverageVoltageAllowError)PixelAverageVoltageError/=5;if(PixelAverageVoltageError>10)PixelAverageVoltageError=10;IntegrationTime+=PixelAverageVoltageError;if(IntegrationTime<=1)IntegrationTime=1;if(IntegrationTime>=100)IntegrationTime=100;voidSen

11、dHex(unsignedcharhex)unsignedchartemp;temp=hex>>4;if(temp<10)Usart1_SendDataChar(temp+'0');elseUsart1_SendDataChar(temp-10+'A');temp=hex&0x0F;if(temp<10)Usart1_SendDataChar(temp+'0');elseUsart1_SendDataChar(temp-10+'A');voidSendImageData(unsignedchar*ImageData)unsignedchari;unsignedcharcrc=0;/*SendData*/Usart1_SendDataChar('*');/向串口1发送数据/uart_putchar(UART0,'*');Usart1_SendDataC