Created
May 3, 2012 14:14
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Backup of some arduino code to handle OV7670
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| #define SIO_C 2 | |
| #define SIO_D 4 | |
| #define SIO_CLOCK_DELAY 100 | |
| void setup() | |
| { | |
| pinMode(8,OUTPUT); | |
| // while(1) | |
| // { | |
| // digitalWrite(8,HIGH); | |
| // delayMicroseconds(SIO_CLOCK_DELAY); | |
| // digitalWrite(8,LOW); | |
| // delayMicroseconds(SIO_CLOCK_DELAY); | |
| // } | |
| Serial.begin(9600); | |
| Serial.println("Start InitOV7670 test program"); | |
| digitalWrite(8,HIGH);delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(8,LOW);delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(8,HIGH);delayMicroseconds(SIO_CLOCK_DELAY); | |
| if(InitOV7670()) | |
| Serial.println("InitOV7670 OK"); | |
| else | |
| Serial.println("InitOV7670 NG"); | |
| } | |
| void loop() | |
| { | |
| } | |
| void InitSCCB(void) //SCCB初期化 | |
| { | |
| pinMode(SIO_C,OUTPUT); | |
| pinMode(SIO_D,OUTPUT); | |
| digitalWrite(SIO_C,HIGH); | |
| digitalWrite(SIO_D,HIGH); | |
| Serial.println("InitSCCB - PortDirectionSet & Set High OK"); | |
| } | |
| void StartSCCB(void) //SCCBスタート | |
| { | |
| Serial.println("StartSCCB"); | |
| digitalWrite(SIO_D,HIGH); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(SIO_C,HIGH); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(SIO_D,LOW); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(SIO_C,LOW); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| } | |
| void StopSCCB(void) //SCCBストップ | |
| { | |
| //Serial.println("StopSCCB"); | |
| digitalWrite(SIO_D,LOW); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(SIO_C,HIGH); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(SIO_D,HIGH); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| } | |
| char SCCBWrite(byte m_data) | |
| { | |
| unsigned char j,tem; | |
| //Serial.print("SCCBWrite 0x"); | |
| //Serial.println(m_data,HEX); | |
| //Serial.print("SCCBWrite"); | |
| for(j=0;j<8;j++) //循环8次发送数据 | |
| { | |
| if((m_data<<j)&0x80) | |
| { | |
| digitalWrite(SIO_D,HIGH); | |
| } | |
| else | |
| { | |
| digitalWrite(SIO_D,LOW); | |
| } | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(SIO_C,HIGH); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(SIO_C,LOW); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| } | |
| //Serial.println(""); | |
| //delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(8,LOW); //debug | |
| pinMode(SIO_D,INPUT); //SIO_Dのバスをスレーブ(OV7670)に渡す | |
| digitalWrite(SIO_D,LOW); //プルアップ防止 | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| digitalWrite(8,HIGH); //debug | |
| digitalWrite(SIO_C,HIGH); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| //Serial.println(" Write done"); | |
| digitalWrite(8,LOW); //debug | |
| if(digitalRead(SIO_D)==HIGH) | |
| { | |
| //SIO_D=Hなら失敗 | |
| tem=0; | |
| Serial.println("SCCBWrite NG"); | |
| } | |
| else | |
| { | |
| //SIO_D=Lなら成功 | |
| tem=1; | |
| //Serial.println("SCCBWrite OK"); | |
| } | |
| digitalWrite(SIO_C,LOW); | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| pinMode(SIO_D,OUTPUT); //SIO_Dのバスをマスター(Arduino)に戻す | |
| //delayMicroseconds(SIO_CLOCK_DELAY); | |
| //digitalWrite(SIO_D,LOW); | |
| //delayMicroseconds(SIO_CLOCK_DELAY); | |
| //pinMode(SIO_C,OUTPUT); //SIO_Cのバスをマスター(Arduino)に戻す | |
| return tem; | |
| } | |
| int InitOV7670(void) | |
| { | |
| char temp; | |
| int i=0; | |
| InitSCCB(); | |
| temp=0x80; | |
| if(WriteOV7670(0x12, temp)==0) //Reset SCCB | |
| { | |
| Serial.println("Resetting SCCB NG"); | |
| return 0 ; | |
| } | |
| //Serial.println("Resetting SCCB OK"); | |
| //delayMicroseconds(10); | |
| // for(i=0;i<CHANGE_REG_NUM;i++) | |
| // { | |
| // if( 0==wrOV7670Reg(pgm_read_byte( &change_reg[i][0]),pgm_read_byte( &change_reg[i][1]) )) | |
| // { | |
| // return 0; | |
| // } | |
| // } | |
| return 0x01; //ok | |
| } | |
| //////////////////////////// | |
| //機能：OV7660レジスタに書き込む | |
| //返値：成功=1 失敗=0 | |
| int WriteOV7670(char regID, char regDat) | |
| { | |
| StartSCCB(); | |
| if(SCCBWrite(0x42)==0) | |
| { | |
| Serial.println(" Write Error 0x42"); | |
| StopSCCB(); | |
| return(0); | |
| } | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| if(SCCBWrite(regID)==0) | |
| { | |
| StopSCCB(); | |
| return(0); | |
| } | |
| delayMicroseconds(SIO_CLOCK_DELAY); | |
| if(SCCBWrite(regDat)==0) | |
| { | |
| StopSCCB(); | |
| return(0); | |
| } | |
| StopSCCB(); | |
| return(1); | |
| } |
TekuConcept, could you tell me how you did it?
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hi i dont know a bout interface ov7670 and arduino uno? mail: azadehasadi27@gmail.com