81 lines
1.6 KiB
C++
81 lines
1.6 KiB
C++
#include <Wire.h>
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#include <LiquidCrystal_I2C.h>
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#include "packet.h" // Packet
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#include "xbee_wrapper.h" // WBeeWrapper
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// Peripherals
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LiquidCrystal_I2C screen(0x27, 16, 2);
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XBeeWrapper xbee = XBeeWrapper();
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// ACTUAL DATA
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uint8_t wave_id = 255; // last wave
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uint8_t dist = 255; // actual distance
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Packet recv;
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Packet send;
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void setup() {
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Serial.begin(38400);
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Serial.println("+ ready");
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screen.begin();
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screen.backlight();
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xbee.begin(38400);
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}
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void loop() {
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// 1. ignore if no received data
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if( xbee.receive(recv) == XBWRECV_OK ){
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uint8_t opcode = recv.getOpcode();
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Serial.print("+ opcode = ");
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Serial.println(opcode);
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// DISCOVER REQUEST
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if( opcode == 0 ) {
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Serial.println("+ discover request");
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Serial.print(" + wave = ");
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Serial.println(recv.getWave());
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Serial.print(" + dist = ");
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Serial.println(recv.getDist());
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if( recv.getWave() != wave_id ){
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wave_id = recv.getWave();
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dist = recv.getDist()+1;
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recv.setDist(dist);
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send.setOpcode(0);
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send.setWave(wave_id);
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send.setDist(dist);
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xbee.broadcast(send);
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Serial.println(" + propagated");
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}
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// MESSAGE DATA
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} else {
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Serial.println("+ message data");
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Serial.print(" + ttl = ");
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Serial.println(recv.getTTL());
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Serial.print(" + dist = ");
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Serial.println(recv.getDist());
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// propagation
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if( recv.getTTL() > 0 && recv.getDist() <= dist ){
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send.setOpcode(1);
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send.setTTL(recv.getTTL()-1);
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send.setDist(dist);
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send.setData(recv.getData(), recv.getSize());
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xbee.broadcast(send);
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Serial.println(" + propagated");
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}
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}
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// manage packet
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}
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}
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