mirror of
https://github.com/DCC-EX/CommandStation-EX.git
synced 2024-11-22 15:46:14 +01:00
99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/*
|
|
* © 2023, Chris Harlow. All rights reserved.
|
|
* © 2021, Neil McKechnie. All rights reserved.
|
|
*
|
|
* This file is part of DCC++EX API
|
|
*
|
|
* 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 io_trainbrains_h
|
|
#define io_trainbrains_h
|
|
|
|
#include "IO_GPIOBase.h"
|
|
#include "FSH.h"
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/*
|
|
* IODevice subclass for trainbrains 3-block occupancy detector.
|
|
* For details see http://trainbrains.eu
|
|
*/
|
|
|
|
enum TrackUnoccupancy
|
|
{
|
|
TRACK_UNOCCUPANCY_UNKNOWN = 0,
|
|
TRACK_OCCUPIED = 1,
|
|
TRACK_UNOCCUPIED = 2
|
|
};
|
|
|
|
class Trainbrains02 : public GPIOBase<uint16_t> {
|
|
public:
|
|
static void create(VPIN vpin, uint8_t nPins, I2CAddress i2cAddress) {
|
|
if (checkNoOverlap(vpin, nPins, i2cAddress)) new Trainbrains02(vpin, nPins, i2cAddress);
|
|
}
|
|
|
|
private:
|
|
// Constructor
|
|
Trainbrains02(VPIN vpin, uint8_t nPins, I2CAddress i2cAddress, int interruptPin=-1)
|
|
: GPIOBase<uint16_t>((FSH *)F("Trainbrains02"), vpin, nPins, i2cAddress, interruptPin)
|
|
{
|
|
requestBlock.setRequestParams(_I2CAddress, inputBuffer, sizeof(inputBuffer),
|
|
outputBuffer, sizeof(outputBuffer));
|
|
|
|
outputBuffer[0] = (uint8_t)_I2CAddress; // strips away the mux part.
|
|
outputBuffer[1] =14;
|
|
outputBuffer[2] =1;
|
|
outputBuffer[3] =0; // This is the channel updated at each poling call
|
|
outputBuffer[4] =0;
|
|
outputBuffer[5] =0;
|
|
outputBuffer[6] =0;
|
|
outputBuffer[7] =0;
|
|
outputBuffer[8] =0;
|
|
outputBuffer[9] =0;
|
|
}
|
|
|
|
void _writeGpioPort() override {}
|
|
|
|
void _readGpioPort(bool immediate) override {
|
|
// cycle channel on device each time
|
|
outputBuffer[3]=channelInProgress+1; // 1-origin
|
|
channelInProgress++;
|
|
if(channelInProgress>=_nPins) channelInProgress=0;
|
|
|
|
if (immediate) {
|
|
_processCompletion(I2CManager.read(_I2CAddress, inputBuffer, sizeof(inputBuffer),
|
|
outputBuffer, sizeof(outputBuffer)));
|
|
} else {
|
|
// Queue new request
|
|
requestBlock.wait(); // Wait for preceding operation to complete
|
|
// Issue new request to read GPIO register
|
|
I2CManager.queueRequest(&requestBlock);
|
|
}
|
|
}
|
|
|
|
// This function is invoked when an I/O operation on the requestBlock completes.
|
|
void _processCompletion(uint8_t status) override {
|
|
if (status != I2C_STATUS_OK) inputBuffer[6]=TRACK_UNOCCUPANCY_UNKNOWN;
|
|
if (inputBuffer[6] == TRACK_UNOCCUPIED ) _portInputState |= 0x01 <<channelInProgress;
|
|
else _portInputState &= ~(0x01 <<channelInProgress);
|
|
}
|
|
|
|
uint8_t channelInProgress=0;
|
|
uint8_t outputBuffer[10];
|
|
uint8_t inputBuffer[10];
|
|
|
|
};
|
|
|
|
#endif
|