#define SERVER_ADDRESS 0x01
#define RH_SPEED 1200
#define RH_RX_PIN 11

#define RH_BUF_LEN 5
uint8_t rh_buf[RH_BUF_LEN];

#define RH_ASK_MAX_MESSAGE_LEN RH_BUF_LEN

#include <RHDatagram.h>
#include <RH_ASK.h>

RH_ASK driver(RH_SPEED, RH_RX_PIN);

float t = 0;
float h = 0;
long bat = 0;

#define MSG_START 0x00
#define MSG_TEMP 0x01
#define MSG_HUMID 0x02
#define MSG_BAT 0x03
#define MSG_ERR 0xee

void setup() {
  Serial.begin(9600);
  if (!driver.init()) {
    Serial.println("init failed");
  } else {
    Serial.println("init done");
  }
}

void loop() {

    uint8_t len = sizeof(rh_buf);
    if (driver.recv(rh_buf, &len)) {
      Serial.println("got message: ");
      switch (rh_buf[0]) {
        case MSG_START:
          // start message
          Serial.println("0x00 start byte");    
          break;
        case MSG_TEMP:
          // DHT data
          Serial.println("0x01 DHT data");
          memcpy(&t, &rh_buf[1], 4);
          Serial.print(t);
          Serial.print("°C - ");
          break;
        case MSG_HUMID:
          // battery data
          Serial.println("0x02 DHT Humidity");
          memcpy(&t, &rh_buf[1], 4);
          Serial.print(t);
          Serial.print("%");
          break;
        case MSG_BAT:
          // battery data
          Serial.println("0x03 Battery");
          memcpy(&bat, &rh_buf[1], 4);
          Serial.print(bat);
          Serial.print("mV");
          break;          
        case MSG_ERR:
          // error
          Serial.println("0xEE error");
          break;
        default:
          // should never happen
          break;
      }
    }
  
}