// recieve data from module
int USBIO::comms_recieve(unsigned char *input)
{
    unsigned char no_of_data_bytes   = 0;
    unsigned char command            = 0;
    unsigned char temp [512];
	
	usbio.ReadBuffer(temp,1);    
    if (temp[0]!='@') return(FALSE);
	
    usbio.ReadBuffer(&no_of_data_bytes,1);
    usbio.ReadBuffer(&command,1);  

    int num_bytes = usbio.ReadBuffer(temp,no_of_data_bytes);
    if (num_bytes != no_of_data_bytes ) return(FALSE);
    // read data
	for (int i=0;i<no_of_data_bytes;i++) input[i]=temp[i];

    temp[0]=0;
    usbio.ReadBuffer(temp,1);  
	
    if (temp[0]!='*') return(FALSE);

    return(command);
}