(1)
The simplest usage of the bean is a communication without interrupts (polling mode).

 MAIN.C

byte ch;
byte err;
ASL1_TError error;
void main(void)
{
  for(;;) {
    //Wait for a character. 
    //The slave must be selected by a master first.
    while(ASL1_GetCharsInRxBuf() == 0);  

    //Read received character and send it if the slave is selected
    //and no error is detected
    if( ASL1_RecvChar(&ch) == ERR_OK) {   
      ASL1_SendChar(ch);
    } else {
      // The GetBreak method must be used first because 
      // the GetError method clear the break flag
      // This method is available if the Break 
      // signal is enabled (Advanced view).
      ASL1_GetBreak(&b);
      if (b) {
        // the break character was received
      }
      ASL1_GetError(&error)		       
      if(error.errName.Parity)
        //Parity error
      else if(error.errName.Framing)
        //Framing error
      .
      .
      .
    }
  }
}

(2)
The next typical usage of this bean is a communication with interrupts using communication events.

 EVENTS.C

void ASL1_OnRxChar(void)
{
  byte ch;
  
  //Read received character and if no error is detected
  if(ASL1_RecvChar(&ch) == ERR_OK)   
    ASL1_SendChar(ch); //send it back
  
}

(3)
Following example shows how to recognize a communication error using the GetError method. In the interrupt communication mode the user can use the OnError event to recognize an error during the communication.

 MAIN.C

byte ch;
ASL1_TError error; //TError union is defined in the header file
void main(void)
{
  while(ASL1_GetCharsInRxBuf() == 0); //Wait for a character
  ASL1_RecvChar(&ch);                 //Read received character 

  //Read the last communication errors
  ASL1_GetError(&error)		     

  if(error.err == 0) {	
    //Send the last received character if no error is detected
    ASL1_SendChar(ch);		       
  } else {
    if(error.errName.Parity) {
      //Parity error
    } else if(error.errName.Framing) {
      //Framing error
    }
    .
    .
  }
  .
  .  
}