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)/*/*main.C*/*/*/* Written By LYM-20160729/*Version 1.0 /*/ #include <CCD.h>#include <ADC.h>#include <timer.h>/ 数据变量定义/=extern uint8 Time0flag_10ms;extern uint8 Time0flag_20ms;uint8 Pixel128;/ 具体函数实现/= void main()uint8 i=0,send_data_cnt=0;uint8

2、 *pixel_pt;Timer0_Init();Timer0_Enable();Usart1_Init(115200);Usart1_ENABLE();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;SendImageData(Pixel);L

3、ED1_Flag();/ Show_ADC();/*/*main.C*/*/*/* Written By LYM-20160729/*Version 1.0 /*/ #include <ADC.h>/ 数据变量定义/=uint8 Show30=0;/ 具体函数实现/=void Adc_Init()P1ASF |=0x08;ADC_RES=0;ADC_RESL=0;ADC_CONTR=ADC_POWER|ADC_SPEEDLL;P1M0 &=0x08;P1M1 |=0x08;DelayAdc(2);uint16 GetAdc(uint8 Channel)uint16 adc;

4、ADC_CONTR=ADC_POWER|ADC_SPEEDLL|Channel|ADC_START;_nop_();_nop_();_nop_();_nop_();while(!(ADC_CONTR & ADC_FLAG);ADC_CONTR &=ADC_FLAG;adc=ADC_RES;adc=adc<<2;adc+=ADC_RESL;adc=(adc*0.33);/ 三位的整数，max=3.3Vreturn adc; void Show_ADC()float show;show=GetAdc(3);sprintf(Show,"VCC=%4.1f &qu

5、ot;,show);Usart1_SendString(Show);/*/*CCD.C*/*/*/*/* Written By LYM-20160803/*Version 1.0 /* #include <CCD.h>/ 数据变量定义/=/ 具体函数实现/=void CCD_GPIO_Init()P2M0 &=0x03;/P20 CLK 准双向口P2M1 &=0x03;/P21 SIvoid CCD_StartIntegration()uint8 i;CCD_SI=1;Delaynus(1);CCD_CLK=1;Delaynus(1);CCD_SI=0;Delayn

6、us(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;void CCD_ImageCapture(uint8 * ImageData)uint8 i;CCD_SI=1;Delaynus(20);CCD_CLK=1;Delaynus(20);CCD_SI=0;Delaynus(30);for(i = 0; i< 250; i+)/更改250，让CCD的图像看上去比较平滑，Delaynus(1); /

7、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;uint8 PixelAverage(uint8 len,uint8 *Data)uint8 i;uint16 sum;for(i=0;i<len;i+)sum=sum+*Data+;return (uint8)(sum/len);uin

8、t8 IntegrationTime=10;void CalculateIntegrationTime()extern uint8 Pixel128;/* 128 个像素点的平均AD值*/uint8 PixelAverageValue;/* 128 个像素点的平均电压值的10 倍 */uint8 PixelAverageVoltage;/* 设定目标平均电压值，实际电压的10 倍 */int16 TargetPixelAverageVoltage = 20;/* 设定目标平均电压值与实际值的偏差，实际电压的10 倍 */int16 PixelAverageVoltageError = 0;/*

9、 设定目标平均电压值允许的偏差，实际电压的10 倍 */int16 TargetPixelAverageVoltageAllowError = 2;/* 计算 128 个像素点的平均AD值 */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);PixelAverageVoltageError = TargetPixelAverageVoltage - Pixel

10、AverageVoltage;if(PixelAverageVoltageError< -TargetPixelAverageVoltageAllowError)PixelAverageVoltageError = 0- PixelAverageVoltageError ;PixelAverageVoltageError /= 5;if(PixelAverageVoltageError> 10 )PixelAverageVoltageError = 10 ;IntegrationTime -= PixelAverageVoltageError;if(PixelAverageVolt

11、ageError>TargetPixelAverageVoltageAllowError)PixelAverageVoltageError /= 5;if(PixelAverageVoltageError> 10 )PixelAverageVoltageError = 10 ;IntegrationTime += PixelAverageVoltageError;if(IntegrationTime<= 1)IntegrationTime = 1;if(IntegrationTime>= 100)IntegrationTime = 100;void SendHex(un

12、signed char hex) unsigned char temp;temp = hex >> 4;if(temp < 10) Usart1_SendDataChar(temp + '0'); else Usart1_SendDataChar(temp - 10 + 'A');temp = hex & 0x0F;if(temp < 10) Usart1_SendDataChar(temp + '0'); else Usart1_SendDataChar(temp - 10 + 'A');void SendImageData(unsigned char * ImageData) unsigned char i;unsigned char crc = 0;/* Send Data */Usart1_SendDataChar('*');/向串口 1 发送数据/uart_putchar(UART0,'*');Us