mirror of
https://github.com/DCC-EX/CommandStation-EX.git
synced 2024-11-23 08:06:13 +01:00
88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
/*
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* © 2021, Peter Cole. All rights reserved.
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*
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* This file is part of EX-CommandStation
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* It is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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/*
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* The IO_EX-IOExpander.h device driver integrates with one or more EX-IOExpander devices.
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* This device driver will configure the device and all I/O ports on startup, along with
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* interacting with the device for all input/output duties.
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*/
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#ifndef IO_EX_IOEXPANDER_H
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#define IO_EX_IOEXPANDER_H
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#include "IO_GPIOBase.h"
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#include "FSH.h"
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#if __has_include ("myPinMap.h")
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#include "myPinMap.h"
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#else
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#warning myPinMap.h not found. Using defaults from myPinMap.example.h
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#include "myPinMap.example.h"
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#endif
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/////////////////////////////////////////////////////////////////////////////////////////////////////
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/*
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* IODevice subclass for EX-IOExpander.
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*/
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class EXIOExpander : public IODevice {
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public:
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static void create(VPIN vpin, int nPins, uint8_t i2cAddress) {
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if (checkNoOverlap(vpin, nPins, i2cAddress)) new EXIOExpander(vpin, nPins, i2cAddress);
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}
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private:
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// Constructor
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EXIOExpander(VPIN firstVpin, int nPins, uint8_t i2cAddress) {
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_firstVpin = firstVpin;
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_nPins = nPins;
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_i2cAddress = i2cAddress;
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addDevice(this);
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}
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void _begin() {
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// Initialise EX-IOExander device
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if (I2CManager.exists(_i2cAddress)) {
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#ifdef DIAG_IO
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_display();
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#endif
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} else {
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DIAG(F("EX-IOExpander device not found, I2C:%x"), _i2cAddress);
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_deviceState = DEVSTATE_FAILED;
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}
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}
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void _display() override {
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DIAG(F("EX-IOExpander I2C:x%x Configured on Vpins:%d-%d %S"), _i2cAddress, _firstVpin, _firstVpin+_nPins-1,
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_deviceState == DEVSTATE_FAILED ? F("OFFLINE") : F(""));
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}
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uint8_t _i2cAddress;
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enum {
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REG_EXIOINIT = 0x00, // Flag to initialise setup procedure
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REG_EXIODPIN = 0x01, // Flag we're sending digital pin assignments
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REG_EXIOAPIN = 0x02, // Flag we're sending analogue pin assignments
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REG_EXIORDY = 0x03, // Flag we have completed setup procedure, also for EX-IO to ACK setup
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REG_EXIODDIR = 0x04, // Flag we're sending digital pin direction configuration
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REG_EXIODPUP = 0x05, // Flag we're sending digital pin pullup configuration
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};
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};
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#endif |