#include <RF12.h>
#include <Ports.h>

void setup() {
   Serial.begin(57600);
   Serial.println("\n[node receiver]");
   rf12_config();
   rf12_config();
}

void loop() {
  if (rf12_recvDone()) {
    if (rf12_crc == 0){
      Serial.print("OK ");
      Serial.print(rf12_hdr, DEC);

      for (uint8_t i = 0; i < rf12_len ; ++i) {
      Serial.print(' ');
      Serial.print(rf12_data[i], DEC);
      }
    Serial.println();
    }
    

    if (rf12_crc == 0 && (rf12_hdr & ~RF12_HDR_MASK) == RF12_HDR_ACK) {
      uint8_t addr = rf12_hdr & RF12_HDR_MASK;
      rf12_sendStart(RF12_HDR_CTL | RF12_HDR_DST | addr, 0, 0);
      Serial.println("-->ack");
    }
  }
}