0.1.8 - EEPROM Beta - Utilities
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/*
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HiFiLOGIX EEPROM BETA (0.1.8 Base)
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dewdude@gmail.com - 08-JAN-2019
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!!! IMPORTANT !!!
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IF YOU HAVE DATA AT ADDRESSES 1020 - 1023, THIS SKETCH WILL CHANGE IT.
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IF YOUR EEPROM IS SMALLER, YOU WILL NEED TO CHANGE THE ADDRESSES.
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THIS CURRENTLY WRITES TO THE EEPROM EVERY SOURCE CHANGE.
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Address 1020 stores the byte to be sent to the shift register.
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Address 1021 stores the x offset for the display.
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Address 1022 contains the index of the input string array.
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Address 1023 contains the letter "T" if defaults exist.
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On boot the script looks for the letter "T" at address 1023.
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If it exists this is supposed to indicate it's been initialized
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and it will continue with the main setup loop. If not, it writes
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default values to locations 1020 - 1022 and writes T to 1023.
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During the setup loop, the values stored at 1020 - 1022 are
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fed as arguments to DontCrossTheStreams. I could probably do
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this with a bunch of if loops to read a single byte and translate
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that in to the rest...but I don't know how that would affect the
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memory.
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*/
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#include <Wire.h>
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#include <U8g2lib.h>
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#include <IRremote.h>
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#include <EEPROM.h>
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#define di 1022
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#define dx 1021
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#define db 1020
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#include "logo.h" // XBMP data for logo.
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U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE);
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const char *inputs[] = {"TAPE-2","TAPE-1","AUX","TUNER","PHONO-2","PHONO-1"};
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int latchPin = 11;
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int clockPin = 9;
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int dataPin = 12;
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int IRin = 7;
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int blanking = 5;
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int matrix = A0;
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IRrecv remote(IRin);
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decode_results ircode;
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void DontCrossTheStreams(byte op, int x, int i) // There's something very important I forgot to tell you.
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{// Don't cross the streams. // Why?
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digitalWrite(latchPin, LOW); // It would be bad.
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shiftOut(dataPin, clockPin, LSBFIRST, op); // What do you mean, bad?
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digitalWrite(latchPin, HIGH); // Imagine all life as you know
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u8g2.clearBuffer(); // it stopping instaneously
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u8g2.drawStr(x,30,inputs[i]); // and every molecule in
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u8g2.sendBuffer(); // your body exploding
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EEPROM.update(db, op); // at the speed of light.
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EEPROM.update(dx, x); // Total protonic reversal.
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EEPROM.update(di, i); // That's bad.
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// Important safety tip, thanks Egon.
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}
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void eeprominit() {
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if (EEPROM.read(1023) == 'T') {
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return;
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} else {
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EEPROM.write(db, 16);
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EEPROM.write(dx, 32);
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EEPROM.write(di, 2);
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EEPROM.write(1023, 'T');
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}
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}
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void setup()
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{
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pinMode(latchPin, OUTPUT);
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pinMode(dataPin, OUTPUT);
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pinMode(clockPin, OUTPUT);
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pinMode(blanking, OUTPUT);
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eeprominit();
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u8g2.begin();
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remote.enableIRIn();
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u8g2.firstPage(); // Logo is now bitmapped and since I only call it
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do { // once, it doesn't need it's own function.
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u8g2.drawXBMP(14,4,hifilogix_width,hifilogix_height,hifilogix_bits);
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} while ( u8g2.nextPage() );
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delay(2000); // It takes the Denon about 4.5 seconds to kick speakers on.
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u8g2.setFont(u8g2_font_logisoso28_tr); // Moved here since logo is bitmap.
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DontCrossTheStreams(EEPROM.read(db),EEPROM.read(dx),EEPROM.read(di)); // THIS IS NO LONGER STATIC IN THE BETA! (yay.)
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digitalWrite(blanking,HIGH); // Now drives a logic inverter.
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}
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void loop()
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{
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int mx = analogRead(matrix);
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byte icode = 0; // I changed how I handed the inputs.
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if (remote.decode(&ircode)) {
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icode = ircode.value;
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remote.resume();
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}
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// I don't know if it improves things, but I sure like how much smaller this section is.
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if ((mx > 100 && mx < 200) || (icode == 0x97)) DontCrossTheStreams(64,10,0); // The code I originally used to figure out my
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if ((mx > 500 && mx < 600) || (icode == 0x67)) DontCrossTheStreams(32,10,1); // remote codes returned 3 bytes in hex. I can't
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if ((mx > 900 && mx < 950) || (icode == 0x4F)) DontCrossTheStreams(16,32,2); // remember what that code was, but I only need
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if ((mx > 1000) || (icode == 0xCF)) DontCrossTheStreams(8,18,3); // the last bit with the remote I'm using.
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if ((mx > 820 && mx < 899) || (icode == 0xE7)) DontCrossTheStreams(6,1,4); // I'm working on making the bare-bones utility I
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if ((mx > 700 && mx < 800) || (icode == 0x85)) DontCrossTheStreams(5,1,5); // wrote a bit more user-friendly.
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delay(200);
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}
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HiFiLOGIX Utilities
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The following sketches have been created to aid you should you decide to build
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and use HiFiLOGIX for your own system.
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# Analog Switch Matrix Helper
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This literally just reads the value returned by the ADC on A0 and displays it to
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the serial console.
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It is recommended that you take these measurements with a pull-down resistor on A0.
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Upload the sketch, open serial monitor. You should either see a bunch of 0's if you
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have a pull-down resistor connected; or some wildly changing numbers if you don't.
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Stick a resistor between A0 and 5V. The ADC in the ATMega will spit out a number
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between 0 and 1023 and display it on the console. I really can't stress enough how
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much better this works if you have a pull-down on A0.
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In theory you could calculate all this out by figuring out what voltage the A0 pin
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would see in the voltage-divider you're creating; then figuring out what it's 5-bit
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sampled value would be. But that's a pain in the ass.
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/*
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* Analog Switch Matrix Helper
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*
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* This sketch basically spits out the integer value of the A0 line
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* to the serial console. Just plop a resistor between 5V and A0.
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* The code in HiFiLOGIX is set up to use a range to account for
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* drift and other variables.
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*
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*/
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char data[100];
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void setup() {
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Serial.begin(9600)
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}
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void loop() {
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int ain = analogRead(A0);
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sprintf(data,"%4d",ain);
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Serial.println(data);
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delay(250);
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}
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