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IO_TM1638.cpp
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127
IO_TM1638.cpp
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/*
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* © 2024, 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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#include <Arduino.h>
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#include "IODevice.h"
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#include "DIAG.h"
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#include "IO_TM1638.h"
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#include "TM1638x.h"
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const uint8_t HIGHFLASH _digits[16]={
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0b00111111,0b00000110,0b01011011,0b01001111,
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0b01100110,0b01101101,0b01111101,0b00000111,
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0b01111111,0b01101111,0b01110111,0b01111100,
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0b00111001,0b01011110,0b01111001,0b01110001
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};
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// Constructor
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TM1638::TM1638(VPIN firstVpin, byte clk_pin,byte dio_pin,byte stb_pin){
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_firstVpin = firstVpin;
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_nPins = 8;
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tm=new TM1638x(clk_pin,dio_pin,stb_pin);
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_buttons=0;
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_leds=0;
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_lastLoop=micros();
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addDevice(this);
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}
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void TM1638::create(VPIN firstVpin, byte clk_pin,byte dio_pin,byte stb_pin) {
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if (checkNoOverlap(firstVpin,8))
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new TM1638(firstVpin, clk_pin,dio_pin,stb_pin);
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}
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void TM1638::_begin() {
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tm->reset();
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tm->test();
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_display();
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}
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void TM1638::_loop(unsigned long currentMicros) {
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if (currentMicros - _lastLoop > (1000000UL/LoopHz)) {
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_buttons=tm->getButtons();// Read the buttons
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_lastLoop=currentMicros;
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}
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// DIAG(F("TM1638 buttons %x"),_buttons);
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}
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void TM1638::_display() {
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DIAG(F("TM1638 Configured on Vpins:%u-%u"), _firstVpin, _firstVpin+_nPins-1);
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}
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// digital read gets button state
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int TM1638::_read(VPIN vpin) {
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byte pin=vpin - _firstVpin;
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bool result=bitRead(_buttons,pin);
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// DIAG(F("TM1638 read (%d) buttons %x = %d"),pin,_buttons,result);
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return result;
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}
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// digital write sets led state
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void TM1638::_write(VPIN vpin, int value) {
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// TODO.. skip if no state change
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tm->writeLed(vpin - _firstVpin + 1,value!=0);
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}
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// Analog write sets digit displays
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void TM1638::_writeAnalogue(VPIN vpin, int lowBytes, uint8_t mode, uint16_t highBytes) {
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DIAG(F("TM1638 w(v=%d,l=%d,m=%d,h=%d,lx=%x,hx=%x"),
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vpin,lowBytes,mode,highBytes,lowBytes,highBytes);
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// mode is in DataFormat defined above.
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byte formatLength=mode & 0x0F; // last 4 bits
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byte formatType=mode & 0xF0; //
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int8_t leftDigit=vpin-_firstVpin; // 0..7 from left
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int8_t rightDigit=leftDigit+formatLength-1; // 0..7 from left
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// loading is done right to left startDigit first
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int8_t startDigit=7-rightDigit; // reverse as 7 on left
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int8_t lastDigit=7-leftDigit; // reverse as 7 on left
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uint32_t value=highBytes;
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value<<=16;
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value |= (uint16_t)lowBytes;
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DIAG(F("TM1638 fl=%d ft=%x sd=%d ld=%d v=%l vx=%X"),
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formatLength,formatType,
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startDigit,lastDigit,value,value);
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while(startDigit<=lastDigit) {
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switch (formatType) {
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case _DF_DECIMAL:// decimal (leading zeros)
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tm->displayDig(startDigit,GETHIGHFLASH(_digits,(value%10)));
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value=value/10;
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break;
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case _DF_HEX:// HEX (leading zeros)
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tm->displayDig(startDigit,GETHIGHFLASH(_digits,(value & 0x0F)));
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value>>=4;
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break;
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case _DF_RAW:// Raw 7-segment pattern
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tm->displayDig(startDigit,value & 0xFF);
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value>>=8;
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break;
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default:
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DIAG(F("TM1368 invalid mode 0x%x"),mode);
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return;
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}
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startDigit++;
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}
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}
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107
IO_TM1638.h
107
IO_TM1638.h
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@ -32,19 +32,10 @@ private:
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uint8_t _leds;
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unsigned long _lastLoop;
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static const int LoopHz=20;
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private:
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// Constructor
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TM1638(VPIN firstVpin, byte clk_pin,byte dio_pin,byte stb_pin){
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_firstVpin = firstVpin;
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_nPins = 8;
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tm=new TM1638x(clk_pin,dio_pin,stb_pin);
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_buttons=0;
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_leds=0;
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_lastLoop=micros();
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addDevice(this);
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}
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TM1638(VPIN firstVpin, byte clk_pin,byte dio_pin,byte stb_pin);
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public:
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enum DigitFormat : byte {
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// last 4 bits are length.
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@ -61,89 +52,17 @@ public:
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// bits of data conversion type (ored with length)
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_DF_DECIMAL=0x00,// right adjusted decimal unsigned leading zeros
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_DF_HEX=0x10, // right adjusted hex leading zeros
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_DF_RAW=0x20, // bytes are raw 7-segment pattern (max length 4)
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_DF_RAW=0x20 // bytes are raw 7-segment pattern (max length 4)
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};
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static void create(VPIN firstVpin, byte clk_pin,byte dio_pin,byte stb_pin) {
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if (checkNoOverlap(firstVpin,8))
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new TM1638(firstVpin, clk_pin,dio_pin,stb_pin);
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}
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void _begin() override {
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tm->reset();
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tm->test();
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_display();
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}
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static void create(VPIN firstVpin, byte clk_pin,byte dio_pin,byte stb_pin);
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void _loop(unsigned long currentMicros) override {
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if (currentMicros - _lastLoop > (1000000UL/LoopHz)) {
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_buttons=tm->getButtons();// Read the buttons
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_lastLoop=currentMicros;
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}
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// DIAG(F("TM1638 buttons %x"),_buttons);
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}
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void _display() override {
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DIAG(F("TM1638 Configured on Vpins:%u-%u"), _firstVpin, _firstVpin+_nPins-1);
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}
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// digital read gets button state
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int _read(VPIN vpin) override {
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byte pin=vpin - _firstVpin;
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bool result=bitRead(_buttons,pin);
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// DIAG(F("TM1638 read (%d) buttons %x = %d"),pin,_buttons,result);
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return result;
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}
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// digital write sets led state
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void _write(VPIN vpin, int value) override {
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// TODO.. skip if no state change
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tm->writeLed(vpin - _firstVpin + 1,value!=0);
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}
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// Analog write sets digit displays
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void _writeAnalogue(VPIN vpin, int lowBytes, uint8_t mode, uint16_t highBytes) override {
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DIAG(F("TM1638 w(v=%d,l=%d,m=%d,h=%d,lx=%x,hx=%x"),
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vpin,lowBytes,mode,highBytes,lowBytes,highBytes);
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// mode is in DataFormat defined above.
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byte formatLength=mode & 0x0F; // last 4 bits
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byte formatType=mode & 0xF0; //
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int8_t leftDigit=vpin-_firstVpin; // 0..7 from left
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int8_t rightDigit=leftDigit+formatLength-1; // 0..7 from left
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// loading is done right to left startDigit first
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int8_t startDigit=7-rightDigit; // reverse as 7 on left
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int8_t lastDigit=7-leftDigit; // reverse as 7 on left
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uint32_t value=highBytes;
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value<<=16;
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value |= (uint16_t)lowBytes;
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DIAG(F("TM1638 fl=%d ft=%x sd=%d ld=%d v=%l vx=%X"),
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formatLength,formatType,
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startDigit,lastDigit,value,value);
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while(startDigit<=lastDigit) {
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switch (formatType) {
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case _DF_DECIMAL:// decimal (leading zeros)
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tm->displayVal(startDigit,value%10);
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value=value/10;
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break;
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case _DF_HEX:// HEX (leading zeros)
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tm->displayVal(startDigit,value & 0x0F);
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value>>=4;
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break;
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case _DF_RAW:// Raw 7-segment pattern
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tm->displayDig(startDigit,value & 0xFF);
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value>>=8;
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break;
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default:
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DIAG(F("TM1368 invalid mode 0x%x"),mode);
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return;
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}
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startDigit++;
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}
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}
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// Functions overridden in IODevice
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void _begin();
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void _loop(unsigned long currentMicros) override ;
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void _writeAnalogue(VPIN vpin, int value, uint8_t param1, uint16_t param2) override;
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void _display() override ;
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int _read(VPIN pin) override;
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void _write(VPIN pin,int value) override;
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};
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#endif // IO_TM1638_h
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#endif
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21
TM1638x.cpp
21
TM1638x.cpp
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@ -2,10 +2,6 @@
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#include "TM1638x.h"
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#include "DIAG.h"
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bool TM1638x::getButton(button_t s){
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_buttons = getButtons();
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return bitRead(_buttons, s);
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}
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// buttons K3/KS1-8
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uint8_t TM1638x::getButtons(){
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digitalWrite(_stb_pin, HIGH);
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}
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void TM1638x::displayVal(uint8_t digitId, uint8_t val){
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DIAG(F("TM1638x displayVal(%d,%d)"),digitId,val);
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if ((digitId>7) | (val>15) | (val<0)) return;
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setDisplayMode(DISPLAY_TURN_ON | _pulse);
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setDataInstruction(INSTRUCTION_WRITE_DATA| INSTRUCTION_ADDRESS_FIXED);
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writeDataAt(FIRST_DISPLAY_ADDRESS+14-(digitId*2), _digits[val]);
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}
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void TM1638x::displayDig(uint8_t digitId, uint8_t pgfedcba){
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if (digitId>7) return;
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setDisplayMode(DISPLAY_TURN_ON | _pulse);
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@ -69,15 +57,6 @@ void TM1638x::writeLed(uint8_t num,bool state){
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writeDataAt(FIRST_DISPLAY_ADDRESS + (num*2-1), state);
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}
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void TM1638x::writeLeds(uint8_t val){
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setDisplayMode(DISPLAY_TURN_ON | _pulse);
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setDataInstruction(INSTRUCTION_WRITE_DATA | INSTRUCTION_ADDRESS_FIXED);
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for(uint8_t i=1;i<9;i++){
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writeDataAt(FIRST_DISPLAY_ADDRESS + (i*2-1), val & 0x01);
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val >>= 1;
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}
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}
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void TM1638x::displayTurnOn(){
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setDisplayMode(DISPLAY_TURN_ON | _pulse);
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_isOn = true;
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29
TM1638x.h
29
TM1638x.h
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@ -50,12 +50,6 @@ class TM1638x{
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#define DISPLAY_TURN_OFF 0x80
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#define DISPLAY_TURN_ON 0x88
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uint8_t _digits[16]={
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0b00111111,0b00000110,0b01011011,0b01001111,
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0b01100110,0b01101101,0b01111101,0b00000111,
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0b01111111,0b01101111,0b01110111,0b01111100,
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0b00111001,0b01011110,0b01111001,0b01110001
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};
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uint8_t _clk_pin;
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uint8_t _stb_pin;
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@ -80,12 +74,6 @@ class TM1638x{
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digitalWrite(dio_pin, HIGH);
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}
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/**
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* @fn getButton
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* @param s num of button (S1-S8)
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* @return state of button
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*/
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bool getButton(button_t s);
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/**
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* @fn getButtons
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* @return state of 8 buttons
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@ -99,22 +87,7 @@ class TM1638x{
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* @param state (true or false)
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*/
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void writeLed(uint8_t num, bool state);
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/**
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* @fn writeLeds
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* @brief set all 8 leds ON or OFF
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* @param val 8bits
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*/
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void writeLeds(uint8_t val);
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/**
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* @fn displayVal
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* @brief put value on 7 segment display
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* @param digitId num of digit(0-7)
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* @param val value(0->F)
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*/
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void displayVal(uint8_t digitId, uint8_t val);
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/**
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* @fn displayDig
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