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https://github.com/DCC-EX/CommandStation-EX.git
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Squashed commit of the following:
commite06668f042Author: Asbelos <asbelos@btinternet.com> Date: Mon Dec 26 10:09:34 2022 +0000 speedup commit3e5d3b1caaAuthor: Asbelos <asbelos@btinternet.com> Date: Sun Dec 25 22:11:56 2022 +0000 Rename commit81099af42bAuthor: Asbelos <asbelos@btinternet.com> Date: Sun Dec 25 21:35:38 2022 +0000 spelling and polling commit9240e7c6baAuthor: Asbelos <asbelos@btinternet.com> Date: Sun Dec 25 20:52:07 2022 +0000 input working commit6c1c681a26Author: Asbelos <asbelos@btinternet.com> Date: Wed Dec 21 11:18:39 2022 +0000 input working 1 board, no kit map, output untested commit5ce67fac97Author: Asbelos <asbelos@btinternet.com> Date: Sun Dec 18 15:32:37 2022 +0000 Include IO_DNU08 automatically commitac8d453d2cAuthor: Asbelos <asbelos@btinternet.com> Date: Sun Dec 18 12:28:13 2022 +0000 BNOU8 HAL driver
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Asbelos
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0be25f6e7f
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@ -161,6 +161,8 @@ public:
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// once the GPIO port concerned has been read.
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void setGPIOInterruptPin(int16_t pinNumber);
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// Method to check if pins will overlap before creating new device.
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static bool checkNoOverlap(VPIN firstPin, uint8_t nPins=1, uint8_t i2cAddress=0);
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protected:
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@ -234,9 +236,6 @@ protected:
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// pin low if an input changes state.
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int16_t _gpioInterruptPin = -1;
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// Method to check if pins will overlap before creating new device.
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static bool checkNoOverlap(VPIN firstPin, uint8_t nPins=1, uint8_t i2cAddress=0);
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// Static support function for subclass creation
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static void addDevice(IODevice *newDevice);
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@ -408,5 +407,6 @@ private:
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#include "IO_MCP23008.h"
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#include "IO_MCP23017.h"
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#include "IO_PCF8574.h"
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#include "IO_duinoNodes.h"
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#endif // iodevice_h
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172
IO_duinoNodes.h
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172
IO_duinoNodes.h
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@ -0,0 +1,172 @@
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/*
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* © 2022, Chris Harlow. All rights reserved.
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*
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* This file is part of DCC++EX API
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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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#ifndef IO_duinoNodes_h
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#define IO_duinoNodes_h
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#include <Arduino.h>
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#include "defines.h"
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#include "IODevice.h"
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#define PIN_MASK(bit) (0x80>>(bit%8))
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#define GET_BIT(x) (_pinValues[(x)/8] & PIN_MASK((x)) )
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#define SET_BIT(x) _pinValues[(x)/8] |= PIN_MASK((x))
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#define CLR_BIT(x) _pinValues[(x)/8] &= ~PIN_MASK((x))
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#define DIAG_IO
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class IO_duinoNodes : public IODevice {
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public:
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IO_duinoNodes(VPIN firstVpin, int nPins,
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byte clockPin, byte latchPin, byte dataPin,
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const byte* pinmap) :
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IODevice(firstVpin, nPins) {
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_latchPin=latchPin;
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_clockPin=clockPin;
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_dataPin=dataPin;
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_pinMap=pinmap;
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_nShiftBytes=(nPins+7)/8; // rounded up to multiples of 8 bits
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_pinValues=(byte*) calloc(_nShiftBytes,1);
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// Connect to HAL so my _write, _read and _loop will be called as required.
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IODevice::addDevice(this);
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}
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// Called by HAL to start handling this device
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void _begin() override {
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_deviceState = DEVSTATE_NORMAL;
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pinMode(_latchPin,OUTPUT);
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pinMode(_clockPin,OUTPUT);
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pinMode(_dataPin,_pinMap?INPUT_PULLUP:OUTPUT);
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_display();
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}
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// loop called by HAL supervisor
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void _loop(unsigned long currentMicros) override {
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if (_pinMap) _loopInput(currentMicros);
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else if (_xmitPending) _loopOutput();
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}
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void _loopInput(unsigned long currentMicros) {
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if (currentMicros-_prevMicros < POLL_MICROS) return; // Nothing to do
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_prevMicros=currentMicros;
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//set latch to HIGH to freeze & store parallel data
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ArduinoPins::fastWriteDigital(_latchPin, HIGH);
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delayMicroseconds(1);
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//set latch to LOW to enable the data to be transmitted serially
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ArduinoPins::fastWriteDigital(_latchPin, LOW);
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// stream in the bitmap using mapping order provided at constructor
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for (int xmitByte=0;xmitByte<_nShiftBytes; xmitByte++) {
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byte newByte=0;
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for (int xmitBit=0;xmitBit<8; xmitBit++) {
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ArduinoPins::fastWriteDigital(_clockPin, LOW);
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delayMicroseconds(1);
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bool data = ArduinoPins::fastReadDigital(_dataPin);
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byte map=_pinMap[xmitBit];
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if (data) newByte |= map;
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else newByte &= ~map;
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ArduinoPins::fastWriteDigital(_clockPin, HIGH);
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delayMicroseconds(1);
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}
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_pinValues[xmitByte]=newByte;
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// DIAG(F("DIN %x=%x"),xmitByte, newByte);
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}
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}
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void _loopOutput() {
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// stream out the bitmap (highest pin first)
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_xmitPending=false;
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ArduinoPins::fastWriteDigital(_latchPin, LOW);
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for (int xmitBit=_nShiftBytes*8 -1; xmitBit>=0; xmitBit--) {
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ArduinoPins::fastWriteDigital(_dataPin,GET_BIT(xmitBit));
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ArduinoPins::fastWriteDigital(_clockPin,HIGH);
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ArduinoPins::fastWriteDigital(_clockPin,LOW);
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}
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digitalWrite(_latchPin, HIGH);
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}
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int _read(VPIN vpin) override {
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int pin=vpin - _firstVpin;
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bool b=GET_BIT(pin);
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return b?1:0;
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}
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void _write(VPIN vpin, int value) override {
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int pin = vpin - _firstVpin;
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bool oldval=GET_BIT(pin);
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bool newval=value!=0;
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if (newval==oldval) return; // no change
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if (newval) SET_BIT(pin);
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else CLR_BIT(pin);
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_xmitPending=true; // shift register will be sent on next _loop()
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}
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void _display() override {
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DIAG(F("IO_duinoNodes %SPUT Configured on VPins:%d-%d shift=%d"),
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_pinMap?F("IN"):F("OUT"),
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(int)_firstVpin,
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(int)_firstVpin+_nPins-1, _nShiftBytes*8);
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}
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private:
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static const unsigned long POLL_MICROS=100000; // 10 / S
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unsigned long _prevMicros;
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int _nShiftBytes=0;
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VPIN _latchPin,_clockPin,_dataPin;
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byte* _pinValues;
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bool _xmitPending; // Only relevant in output mode
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const byte* _pinMap; // NULL in output mode
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};
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class IO_DNIN8 {
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public:
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static void create(VPIN firstVpin, int nPins, byte clockPin, byte latchPin, byte dataPin )
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{
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// input arrives as board pin 0,7,6,5,1,2,3,4
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static const byte pinmap[8]={0x80,0x01,0x02,0x04,0x40,0x20,0x10,0x08};
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if (IODevice::checkNoOverlap(firstVpin,nPins))
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new IO_duinoNodes( firstVpin, nPins, clockPin, latchPin, dataPin,pinmap);
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}
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};
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class IO_DNIN8K {
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public:
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static void create(VPIN firstVpin, int nPins, byte clockPin, byte latchPin, byte dataPin )
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{
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// input arrives as board pin 0, 1, 2, 3, 4, 5, 6, 7
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static const byte pinmap[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
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if (IODevice::checkNoOverlap(firstVpin,nPins))
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new IO_duinoNodes( firstVpin, nPins, clockPin, latchPin, dataPin,pinmap);
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}
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};
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class IO_DNOU8 {
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public:
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static void create(VPIN firstVpin, int nPins, byte clockPin, byte latchPin, byte dataPin )
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{
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if (IODevice::checkNoOverlap(firstVpin,nPins))
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new IO_duinoNodes( firstVpin, nPins, clockPin, latchPin, dataPin,NULL);
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}
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};
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#endif
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39
Release_Notes/duinoNodes.md
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39
Release_Notes/duinoNodes.md
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@ -0,0 +1,39 @@
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Using Lew's Duino Gear boards:
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1. DNIN8 Input
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This is a shift-register implementation of a digital input collector.
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Multiple DNIN8 may be connected in sequence but it is IMPORTANT that the software
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configuratuion correctly represents the number of boards connected otherwise the results will be meaningless.
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Use in myAnimation.h
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HAL(IO_DNIN8, firstVpin, numPins, clockPin, latchPin, dataPin)
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e.g.
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HAL(IO_DNIN8, 400, 16, 40, 42, 44)
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OR Use in myHal.cpp
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IO_DNIN8::create( firstVpin, numPins, clockPin, latchPin, dataPin)
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This will create virtaul pins 400-415 using two DNIN8 boards connected in sequence.
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Vpins 400-407 will be on the first board (closest to the CS) and 408-415 on the second.
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Note: 16 pins uses two boards. You may specify a non-multiple-of-8 pins but this will be rounded up to a multiple of 8 and you must connect ONLY the number of boards that this takes.
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This example uses Arduino GPIO pins 40,42,44 as these are conveniently side-by-side on a Mega which is easier when you are using a 3 strand cable.
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The DNIN8K module works the same but you must use DNIN8K in the HAL setup instead of DNIN8. NO you cant mix 8 and 8k versions in the same string of boards but you can create another string of boards.
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DNOU8 works the same way,
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Use in myAnimation.h
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HAL(IO_DNOU8, firstVpin, numPins, clockPin, latchPin, dataPin)
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e.g.
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HAL(IO_DNIN8, 450, 16, 45, 47, 49)
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OR Use in myHal.cpp
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IO_DNIN8::create( firstVpin, numPins, clockPin, latchPin, dataPin)
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This creates a string of input pins 450-465. Note the clock/latch/data pins must be different to any DNIN8/k pins.
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