24C01-24C256 read and write operation C language program

24C01--24C256 Read and write operation C language program #pragma ot (6, SIZE) #i nclude M2416) {IICSendByte ((unsigned char) (Address>>8)); if (IICRecAck ()) conTInue;} IICSendByte ((unsigned char) Address); if (IICRecAck ()) continue;! if ((ControlByte & 0x01 )) {j = ByteQuantity; errorflag = 0; // ******** clr errorflag while (j--) {IICSendByte (* DataBuff ++); if (IICRecAck ()) continue;! errorflag = 1; break ;} if (errorflag == 1) continue; break;} else {IICStart (); IICSendByte (ControlByte); if (IICRecAck ()) continue; while (- ByteQuantity) {* DataBuff ++ = IICReceiveByte (); IICAck ();} * DataBuff = IICReceiveByte (); // read last byte data IICNoAck (); errorflag = 0; break;}} IICStop (); if ( ! (ControlByte & 0x01)) {Delay (255); Delay (255); Delay (255); Delay (255);} return (errorflag);} / ************************************************************ The following is a routine operation on IIC bus *** // ***************** start bus ********************** / void IICStart (void) {SCL = 0; // SDA = 1; SCL = 1; _nop _(); _nop_( ); _nop _(); SDA = 0; _nop _(); _nop _(); _nop _(); _nop _(); SCL = 0; SDA = 1; //} / IIC bus stop ******************************************************** **************** / void IICStop (void) {SCL = 0; SDA = 0; SCL = 1; _nop _(); _nop _(); _nop _(); SDA = 1; _nop _(); _nop _(); _nop _(); SCL = 0;} / Acknowledge bit check ************** ******************* / bit IICRecAck (void) {SCL = 0; SDA = 1; SCL = 1; _nop _(); _nop _(); _nop _(); _nop _(); CY = SDA; // because the return value is always placed CY the SCL = 0; return (CY);} / IIC bus for generating a response *************** ******************* / void IICACK (void) {SDA = 0 ; SCL = 1; _nop _(); _nop _(); _nop _(); _nop _(); SCL = 0; _nop _(); SDA = 1;} / IIC bus ******************************************************** not generate an acknowledge *************** / void IICNoAck (void) {SDA = 1; SCL = 1; _nop _(); _nop _(); _nop _(); _nop _(); SCL = 0;} / ******************* write data to the IIC bus ********************* / void IICSendByte ( unsigned char sendbyte) {unsigned char data j = 8; for (; j>0; j--) {SCL = 0; sendbyte<.1881 = 1;. // C51 matter how to achieve this operation, will always CY = sendbyte ^ 7; SDA = CY; SCL = 1;} SCL = 0;} / ********************************************************** read data subprogram ********** / unsigned char IICReceiveByte (void) {register from the IIC bus receivebyte, i = 8; SCL = 0; while (i--) {SCL = 1; receivebyte = (receivebyte<<1) | SDA; SCL = 0;} return (receivebyte);} / *************** a simple delay program ************************ / void Delay (unsigned char DelayCount) {while (DelayCount--);} Chinese data 24C256, 24C256 Chinese data, technology zone Alexa voice service software extension STM32Cube Combined with DNN API drivers to drive future neural network applications Four integration design for high-end mobile communications and automotive markets A frame capture open source graphic debugger application design The latest security technology that is about to be standard configuration: Rear view camera system