cmd[5] = sum_cmd;

for (i = 0; i < 6; i++) {

printByte(cmd[i]);// command send to device

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

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

#endif

delay(10);

}

digitalWrite(EN, LOW);

}

/************Feedback data of the Analog value and humidity & temperature ***

*********/\

void data_return()

{

digitalWrite(EN, LOW); // Turn the driver pin to LOW

-> Turn on reading mo

de for the RS485 interface

delay(10);

int i = 0;

unsigned long timer = millis();

while (true) {

if (Serial.available()) {

receive_ACK[i] = Serial.read();

i++;

}

if (millis() - timer > 100) {

break;

Serial.println("Finish reading!");