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Basic shell of device driver started

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peteGSX 2022-12-08 14:21:01 +10:00
parent 13368c319a
commit 8cbcf5df32
2 changed files with 107 additions and 0 deletions
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79
IO_EXIOExpander.h Normal file
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/*
* © 2021, Peter Cole. All rights reserved.
*
* This file is part of EX-CommandStation
*
* 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/>.
*/
/*
* The IO_EX-IOExpander.h device driver integrates with one or more EX-IOExpander devices.
* This device driver will configure the device and all I/O ports on startup, along with
* interacting with the device for all input/output duties.
*/
#ifndef IO_EX_IOEXPANDER_H
#define IO_EX_IOEXPANDER_H
#include "IO_GPIOBase.h"
#include "FSH.h"
#if __has_include ("myPinMap.h")
#include "myPinMap.h"
#else
#warning myPinMap.h not found. Using defaults from myPinMap.example.h
#include "myPinMap.example.h"
#endif
/////////////////////////////////////////////////////////////////////////////////////////////////////
/*
* IODevice subclass for EX-IOExpander.
*/
class EXIOExpander : public IODevice {
public:
static void create(VPIN vpin, int nPins, uint8_t i2cAddress) {
if (checkNoOverlap(vpin, nPins, i2cAddress)) new EXIOExpander(vpin, nPins, i2cAddress);
}
private:
// Constructor
EXIOExpander(VPIN firstVpin, int nPins, uint8_t i2cAddress) {
_firstVpin = firstVpin;
_nPins = nPins;
_i2cAddress = i2cAddress;
addDevice(this);
}
void _begin() {
// Initialise EX-IOExander device
if (I2CManager.exists(_i2cAddress)) {
#ifdef DIAG_IO
_display();
#endif
} else {
DIAG(F("EX-IOExpander device not found, I2C:%x"), _i2cAddress);
_deviceState = DEVSTATE_FAILED;
}
}
void _display() override {
DIAG(F("EX-IOExpander I2C:x%x Configured on Vpins:%d-%d %S"), _i2cAddress, _firstVpin, _firstVpin+_nPins-1,
_deviceState == DEVSTATE_FAILED ? F("OFFLINE") : F(""));
}
uint8_t _i2cAddress;
};
#endif

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myPinMap.example.h Normal file
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/*
* © 2022 Peter Cole. All rights reserved.
*
* This is the example configuration file for the EX-IOExpander pin map file.
*
* It is highly recommended to copy this to "myPinMap.h" and modify to suit your specific
* requirements.
*
* NOTE: Modifications to this file will be overwritten by future software updates.
*/
#ifndef MYPINMAP_H
#define MYPINMAP_H
/////////////////////////////////////////////////////////////////////////////////////
// Define the number of I/O pins to be configured on the EX-IOExpander device
//
#define NUMBER_OF_DIGITAL_PINS 12
#define NUMBER_OF_ANALOGUE_PINS 4
/////////////////////////////////////////////////////////////////////////////////////
// Define the pin map
//
// You must define the correct number of pins as per NUMBER_OF_PINS above
//
static uint8_t digitalPinMap[NUMBER_OF_DIGITAL_PINS] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13};
static uint8_t analoguePinMap[NUMBER_OF_ANALOGUE_PINS] = {A0, A1, A2, A3};
#endif