mirror of
https://github.com/DCC-EX/CommandStation-EX.git
synced 2024-12-23 12:51:24 +01:00
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*
|
|
* © 2024 Chris Harlow
|
|
* All rights reserved.
|
|
*
|
|
* This file is part of DCC-EX
|
|
*
|
|
* This is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* It is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef Railcom_h
|
|
#define Railcom_h
|
|
#include "Arduino.h"
|
|
|
|
typedef void (*ACK_CALLBACK)(int16_t result);
|
|
|
|
class Railcom {
|
|
public:
|
|
Railcom(uint16_t vpin);
|
|
|
|
/* returns -1: Call again next packet
|
|
0: No loco on track
|
|
>0: loco id
|
|
*/
|
|
void process(uint8_t * inbound,uint8_t length);
|
|
static void anticipate(uint16_t loco, uint16_t cv, ACK_CALLBACK callback) {
|
|
expectLoco=loco;
|
|
expectCV=cv;
|
|
expectWait=millis(); // start of timeout
|
|
expectCallback=callback;
|
|
};
|
|
|
|
private:
|
|
static const unsigned long POM_READ_TIMEOUT=500; // as per spec
|
|
static uint16_t expectCV,expectLoco;
|
|
static unsigned long expectWait;
|
|
static ACK_CALLBACK expectCallback;
|
|
void noData();
|
|
uint16_t vpin;
|
|
uint8_t holdoverHigh,holdoverLow;
|
|
bool haveHigh,haveLow;
|
|
uint8_t packetsWithNoData;
|
|
uint16_t lastChannel1Loco;
|
|
static const byte MAX_WAIT_FOR_GLITCH=20; // number of dead or empty packets before assuming loco=0
|
|
};
|
|
|
|
#endif |