139 lines
3.0 KiB
C++
139 lines
3.0 KiB
C++
#include <Wire.h>
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#include "lcd.h"
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#include "packet.h" // Packet
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#include "xbee_wrapper.h" // WBeeWrapper
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#include "protocol.h"
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#define SEND_TIMEOUT 10000
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// Peripherals
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LCDWrapper screen(0x20, 16, 2);
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XBeeWrapper xbee = XBeeWrapper();
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// ACTUAL DATA
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unsigned long time;
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Node myself = Node();
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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.printfn(0, "[ node ready ]");
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xbee.begin(38400);
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time = millis();
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}
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void loop() {
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/* [1] If SEND_TIMEOUT reached -> send data */
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if( millis() - time >= SEND_TIMEOUT ){
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time = millis();
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send_data();
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}
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/* [2] Listen for incoming data */
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Packet recv;
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if( xbee.receive(recv) != XBWRECV_OK )
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return;
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uint8_t opcode = recv.getOpcode();
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// 1. manage discover request
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if( opcode == OPCODE_DISCOVER )
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return manage_discover(recv);
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// 2. manage message data
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else if( opcode == OPCODE_MESSAGE )
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return manage_message(recv);
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}
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void send_data(){
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Serial.println(" -> message");
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// 1. prepare message
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Packet send;
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send.setOpcode(OPCODE_MESSAGE);
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send.setSender(SENDERID);
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send.setDist(myself.getDist());
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send.setTTL(MESSAGE_TTL);
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char data[64] = {0};
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sprintf(data, "%d has: dist %d / wave %d", SENDERID, myself.getDist(), myself.getWave());
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send.setData(data);
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// 2. broadcast
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xbee.broadcast(send);
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// 2. debug
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screen.clear();
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screen.printfn(0, "msg[%3d/%3d] %3d", send.getDist(), send.getTTL(), send.getSize());
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screen.printfn_overflow(1, "%s", (char*) send.getData());
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delay(500);
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}
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void manage_discover(Packet recv){
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Serial.print(" <- discover[ ");
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Serial.print(recv.getDist());
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Serial.print(" / ");
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Serial.print(recv.getWave());
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Serial.println(" ]");
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screen.clear();
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screen.printfn(0, "dsc[ %3d / %3d ]", recv.getDist(), recv.getWave());
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// update features
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if( !myself.update(recv.getDist(), recv.getWave()) ){
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screen.printfn(1, "x ");
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return;
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}
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// propagate wave
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Packet send;
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send.setOpcode(OPCODE_DISCOVER);
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send.setWave(myself.getWave());
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send.setDist(myself.getDist());
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screen.printfn(1, "dsc[ %3d / %3d ]", send.getDist(), send.getWave());
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xbee.broadcast(send);
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}
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void manage_message(Packet recv){
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if( recv.getTTL() <= 0 )
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return;
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Serial.print(" <- message[");
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Serial.print(recv.getDist());
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Serial.print("/");
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Serial.print(recv.getTTL());
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Serial.print("] ");
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Serial.print(recv.getSize());
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Serial.print(" '");
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Serial.print((char*) recv.getData());
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Serial.println("'");
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screen.clear();
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screen.printfn(0, "msg[%3d/%3d] %3d", recv.getDist(), recv.getTTL(), recv.getSize());
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screen.printfn_overflow(1, "%s", (char*) recv.getData());
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delay(1000);
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// ignore
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if( recv.getDist() > myself.getDist() ){
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screen.printfn(1, "x ");
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return;
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}
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// propagation
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// send.setOpcode(OPCODE_MESSAGE);
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recv.setTTL(recv.getTTL()-1);
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recv.setDist(myself.getDist());
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// send.setData(recv.getData());
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screen.printfn(1, "msg[%3d/%3d] %3d", recv.getDist(), recv.getTTL(), recv.getSize());
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delay(500);
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screen.printfn(1, "%s", (char*) recv.getData());
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xbee.broadcast(recv);
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}
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