int test_ACK (void) {// return true if receive_ACK accord with std_ACK

int i;

for (i=0; i<19; i++) {

if (receive_ACK[i] != std_ACK[i])

return 0;

}

return 1;

}

void send_id (void) {//send id to PC

int i;

Serial.print ("ID: ");

for (i=19; i<= 23; i++) {

Serial.print (receive_ACK[i], HEX);

Serial.print (" ");

}

Serial.println ();

}

void UART1_Send_Byte(unsigned char command_data){//send byte to device

print1Byte(command_data);

#if defined(ARDUINO) && ARDUINO >= 100

Serial1.flush();// complete the transmission of outgoing serial data

#endif

}

void UART_Send_Byte(unsigned char command_data){//send byte to PC

Serial.print(command_data,HEX);

Serial.print(" ");

}

void read_ACK(unsigned char temp){//read ACK into reveive_ACK[]

unsigned char i;

for(i=0;i<temp;i++) {