I2C LCD F16 Fuel Flow code

[Balthazar]

Hi all,

Trying to bring fuel flow indicator of f16 in an LCD 16/2 with I2C expansion.

I am new to arduino coding. I tried to create the code but cannot figure it out. Anybody who has a code for it or can help create one?

Tried combining some things from internet but no luck.

 Thanks 

 

Edited October 19, 2021 by Balthazar

[No1sonuk]

First-off, what are you using to output the data?
If it's DCS-BIOS, which version (Flightpanels or Hub)?

Secondly:
Have you tried a simple sketch that only displays a message on the LCD?
If you've not managed that, you can't hope to fault-find two systems at once (game interface and display).

Thirdly:
Have you managed to get any arduino code talking to the game?
The main example is the A-10 master caution light and switch.  I don't know if the F16 has a similar simple combination you can test.

Finally,
Post the code you've tried.  It might be something simple.

[Balthazar]

Hi and thanks for the reply.

1. Arduino Uno, LCD 16x2 with I2C exp, DCS-Bios hub 0.10.0

2. Yes and LCD works fine

3. With pleasure but not sure you will understand what i am doing there since as newbie i do not know a think

 

#define DCSBIOS_IRQ_SERIAL
#include <DcsBios.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);

int Fueltotalizer1k = 0;
int Fueltotalizer100 = 0;
int Fueltotalizer10k = 0;

 
void screen() {
  lcd.setCursor(0,0);
  lcd.print("      ");
  lcd.setCursor(0,0);
  lcd.print(Fueltotalizer100);
  
}
/* paste code snippets from the reference documentation here */
void onFueltotalizer1kChange(unsigned int newValue) 
{
    Fueltotalizer1k = newValue;
    screen();
}
DcsBios::IntegerBuffer fueltotalizer1kBuffer(0x44e2, 0xffff, 0, onFueltotalizer1kChange);

void onFuelflowcounter100Change(unsigned int newValue) {
    Fueltotalizer100 = newValue;
    screen();
  
  
}

DcsBios::IntegerBuffer fueltotalizer10kBuffer(0x44e4, 0xffff, 0, onFueltotalizer100Change);

void onFueltotalizer10kChange(unsigned int newValue)
{
  Fueltotalizer10k = newValue;
    screen();

}
DcsBios::IntegerBuffer fueltotalizer10kBuffer(0x44e0, 0xffff, 0, onFueltotalizer10kChange);

void setup() {
  DcsBios::setup();
  lcd.init();
  lcd.init();
    lcd.backlight();
}

void loop() {
  DcsBios::loop();
}

 

Thanks for your patience.

 

[Vinc_Vega]

Caused by your "screen()" function, your display only prints the 100th digits, if any.

Try this within the curved brackets:

 

  lcd.setCursor(0,0);
  lcd.print("Fuel: ");
  lcd.setCursor(6,0);
  lcd.print(Fueltotalizer10k);
  lcd.setCursor(7,0);
  lcd.print(Fueltotalizer1k); 
  lcd.setCursor(8,0);
  lcd.print(Fueltotalizer100);
  lcd.setCursor(9,0);
  lcd.print("00");
  lcd.display();	// maybe the display has to be refreshed, otherwise delete that statement

Regards, Vinc

Edited October 20, 2021 by Vinc_Vega
typo correction

[No1sonuk]

I think in addition to Vinc's comment, part of your problem is the mismatch of terms here:

Quote

 

void onFuelflowcounter100Change(unsigned int newValue) {
    Fueltotalizer100 = newValue;
    screen();
  
  
}

DcsBios::IntegerBuffer fueltotalizer10kBuffer(0x44e4, 0xffff, 0, onFueltotalizer100Change);

 

I'm surprised it compiled OK with those errors.

I think it never sets the Fueltotalizer100 value...

Edited October 20, 2021 by No1sonuk

[Balthazar]

Hi first of all thank you both for taking the time to help me. I appreciate it.

@No1sonuk You are perfectly right the code was not compiling because at the beginning i used wrong reference value and when i changed it i forgot to change the one you catch here. Thanks. Now is compiling.

@Vinc_Vega Indeed i had only the 100th digits and i would put also the rest as soon as i could manage to compile.

Now the code is like below but i do not read correct fuel flow! It seems that i miss something.

#define DCSBIOS_IRQ_SERIAL
#include <DcsBios.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);

int Fueltotalizer1k = 0;
int Fueltotalizer100 = 0;
int Fueltotalizer10k = 0;

 
void screen() {
  lcd.setCursor(0,0);
  lcd.print("Fuel: ");
  lcd.setCursor(6,0);
  lcd.print(Fueltotalizer10k);
  lcd.setCursor(7,0);
  lcd.print(Fueltotalizer1k); 
  lcd.setCursor(8,0);
  lcd.print(Fueltotalizer100);
  lcd.setCursor(9,0);
  lcd.print("00");
  
  
}

void onFueltotalizer1kChange(unsigned int newValue) 
{
    Fueltotalizer1k = newValue;
    screen();
}
DcsBios::IntegerBuffer fueltotalizer1kBuffer(0x44e2, 0xffff, 0, onFueltotalizer1kChange);

void onFueltotalizer100Change(unsigned int newValue) {
    Fueltotalizer100 = newValue;
    screen();
  
  
}

DcsBios::IntegerBuffer fueltotalizer100Buffer(0x44e4, 0xffff, 0, onFueltotalizer100Change);

void onFueltotalizer10kChange(unsigned int newValue)
{
  Fueltotalizer10k = newValue;
    screen();

}
DcsBios::IntegerBuffer fueltotalizer10kBuffer(0x44e0, 0xffff, 0, onFueltotalizer10kChange);

void setup() {
  DcsBios::setup();
  lcd.init();
  lcd.init();
    lcd.backlight();
}

void loop() {
  DcsBios::loop();
}

 

[Balthazar]

Guys finally i made it. As soon as i will finalize all that i want to do i will upload it in case anyone else is interested. Thanks for your insights!

[No1sonuk]

What was the problem?

[Balthazar]

I didn't figure out how the 10K, 1K and 100 worked. A friend explained me that the 100 has 3 digits and the others one and he helped me with the translation of the DCS-Bios data to digits.

I also added some other functions and the results are the followings.

RF = Remaining Fuel
FF = Fuel Flow
LG = Landing Gear UP/DN
AB = Air Brakes CLO/OPN

 

 

The code i finally did

#define DCSBIOS_IRQ_SERIAL
#include <DcsBios.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);

int l = 0;

 
//Remaing fuel counter//
void onFueltotalizer1kChange(unsigned int newValue) 
{
       unsigned int lEngFuelFlowValue = (newValue & 0xffff) >> 0;
 unsigned int valueL = map(lEngFuelFlowValue, 0, 65535, 0, 11); 
 l = valueL;
 lcd.setCursor(4,0);
 lcd.print(valueL);
 }
DcsBios::IntegerBuffer fueltotalizer1kBuffer(0x44e2, 0xffff, 0, onFueltotalizer1kChange);

void onFueltotalizer100Change(unsigned int newValue) {
    unsigned int lEngFuelFlowValue = (newValue & 0xffff) >> 0;
 unsigned int valueL = map(lEngFuelFlowValue, 0, 65535, 0, 99); 
 unsigned int firstDigit;
 unsigned int secondDigit;
 firstDigit = valueL/10;
 secondDigit = valueL%10;
 lcd.setCursor(5,0);
 lcd.print(firstDigit);
 lcd.setCursor(6,0);
 lcd.print(secondDigit);
 lcd.setCursor(7,0);
 lcd.print("0");
}
DcsBios::IntegerBuffer fueltotalizer100Buffer(0x44e4, 0xffff, 0, onFueltotalizer100Change);

void onFueltotalizer10kChange(unsigned int newValue)
{
 unsigned int lEngFuelFlowValue = (newValue & 0xffff) >> 0;
 unsigned int valueL = map(lEngFuelFlowValue, 0, 65535, 0, 11); 
 
 lcd.setCursor(3,0);
 lcd.print(valueL);
 }
DcsBios::IntegerBuffer fueltotalizer10kBuffer(0x44e0, 0xffff, 0, onFueltotalizer10kChange);

//Fuel flow counter//

void onFuelflowcounter10kChange(unsigned int newValue) {

    unsigned int lEngFuelFlowValue = (newValue & 0xffff) >> 0;
 unsigned int valueL = map(lEngFuelFlowValue, 0, 65535, 0, 11); 
 lcd.setCursor(3,1);
 lcd.print(valueL);
}
DcsBios::IntegerBuffer fuelflowcounter10kBuffer(0x44d6, 0xffff, 0, onFuelflowcounter10kChange);

void onFuelflowcounter1kChange(unsigned int newValue) {
  
    unsigned int lEngFuelFlowValue = (newValue & 0xffff) >> 0;
 unsigned int valueL = map(lEngFuelFlowValue, 0, 65535, 0, 11); 
 l = valueL;
 lcd.setCursor(4,1);
 lcd.print(valueL);
}
DcsBios::IntegerBuffer fuelflowcounter1kBuffer(0x44d8, 0xffff, 0, onFuelflowcounter1kChange);

void onFuelflowcounter100Change(unsigned int newValue) {
  
    unsigned int lEngFuelFlowValue = (newValue & 0xffff) >> 0;
 unsigned int valueL = map(lEngFuelFlowValue, 0, 65535, 0, 99); 
 unsigned int firstDigit;
 unsigned int secondDigit;
 firstDigit = valueL/10;
 secondDigit = valueL%10;
 lcd.setCursor(5,1);
 lcd.print(firstDigit);
 lcd.setCursor(6,1);
 lcd.print(secondDigit);
 lcd.setCursor(7,1);
 lcd.print("0");
}
DcsBios::IntegerBuffer fuelflowcounter100Buffer(0x44da, 0xffff, 0, onFuelflowcounter100Change);

//Gear down//
void onGearHandleChange(unsigned int newValue) {
    lcd.setCursor(13,0);
    if (newValue == 0){
    lcd.print("DN");
    } else {
    lcd.print("UP");
}
}
//Air Brakes//
void onSpeedbrakeIndicatorChange(unsigned int newValue) {
    lcd.setCursor(13,1);
    if (newValue == 0){
    lcd.print("CLO");
    } else {
    lcd.print("OPN");
}
}
DcsBios::IntegerBuffer speedbrakeIndicatorBuffer(0x44c6, 0xffff, 0, onSpeedbrakeIndicatorChange);

DcsBios::IntegerBuffer gearHandleBuffer(0x441c, 0x4000, 14, onGearHandleChange);
void setup() {
  DcsBios::setup();
  lcd.init();
  lcd.init();
    lcd.backlight();
     lcd.setCursor(0,0);
 lcd.print("RF:");
 lcd.setCursor(0,1);
 lcd.print("FF:");
 lcd.setCursor(10,0);
 lcd.print("LG:");
 lcd.setCursor(10,1);
 lcd.print("AB:");
}

void loop() {
  DcsBios::loop();
}

[Vinc_Vega]

Ahhh, as I don't have the F-16 module I didn't know that the flow values are of the "analogue" type that has to be converted (mapped).

Fortunately now everything seems to work

Regards, Vinc

Edited October 22, 2021 by Vinc_Vega
typo correction