Read and write driver based on AT2402 microcontroller

#include

// AT2402 function

//                    Send multi-byte data function to a sub-address device               
//Function prototype: bit  ISendStr(UCHAR sla,UCHAR suba,ucahr /s,UCHAR no); 
//Function:     The whole process from starting the bus to sending address, sub-address, data, and ending the bus, from the device
//         address sla, sub-address suba, the content to be sent is the content pointed to by s, and no bytes are sent.
//          If 1 is returned, it means the operation is successful, otherwise the operation is wrong.
//Note:    The bus must be ended before use.

bit ISendStr(unsigned char  sla,unsigned char  suba,unsigned char  *s,unsigned char  no)
{
   unsigned char i;

  Start_I2c();               //Start the bus//
  SendByte(sla);             //Send device address//
  if(ack==0)return(0);
  SendByte(suba);            //Send device sub-address//
  if(ack==0)return(0);       //Here represents the internal ROM address

  for(i=0;i        //The slave sends data to the host
  {   
    SendByte(*s);            //Send data//
    if(ack==0)return(0);
    s++;
  }
  Stop_I2c();                //End the bus//

   return(1);
}

//                    Function to read multi-byte data from a device with a sub-address               
//Function prototype: bit  RecndStr(UCHAR sla,UCHAR suba,ucahr /s,UCHAR no); 
//Function:     From starting the bus to sending the address, sub-address, reading data, and ending the bus, from the device
//         address sla, sub-address suba, the read content is placed in the storage area pointed to by s, and no bytes are read.
//           If 1 is returned, it means the operation is successful, otherwise the operation is wrong.
//Note:    The bus must be ended before use.
bit IRcvStr(unsigned char  sla,unsigned char  suba,unsigned char  *s,unsigned char  no)
{
  unsigned char i;

  Start_I2c();                  //Start the bus//
  SendByte(sla);                //Send device address//
  if(ack==0)return(0);
  SendByte(suba);               //Send device sub-address//
  if(ack==0)return(0);          //Here represents the internal ROM address

  Start_I2c();                 //Restart the bus//
  SendByte(sla+1);           //Indicates reading data from the host
  if(ack==0)return(0);
  for(i=0;i   {   
    /s=RcvByte();               //Send data//
     Ack_I2c(0);                //Send the acknowledgment bit// 
    s++;
  }
  /s=RcvByte();
  Ack_I2c(1);                   //Send the non-acknowledgment bit//
  Stop_I2c();                   //End the bus//
  return(1);
}