ILI9341 backlight PWM connected to pin 43 DUE?

Using Arduino Displays
#1 
/*backlight test PWML2 = 43
  Due board
  Screen https://www.adafruit.com/product/1770
*/
#include <MCUFRIEND_kbv.h>
#include <TouchScreen.h>
MCUFRIEND_kbv tft;

#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0
//#define LCD_RESET A4

//Touchscreen X+ X- Y+ Y- pins
#define YP A5
#define XM A4
#define YM 10
#define XP 11
//tested as correct for new ADAFRUIT screen
#define TS_MINX 150
#define TS_MINY 90
#define TS_MAXX 900
#define TS_MAXY 800

#define BLACK       0x0000
#define BLUE        0x001F
#define CYAN        0x07FF
#define DARKCYAN    0x03EF
#define GRAY1       0x8410
#define GRAY2       0x4208
#define LIGHTGREY   0xC618
#define DARKGREY    0x7BEF
#define GREEN       0x07E0
#define DARKGREEN   0x03E0
#define GREENYELLOW 0xB7E0
#define MAGENTA     0xF81F
#define MAROON      0x7800
#define NAVY        0x000F
#define OLIVE       0x7BE0
#define ORANGE      0xFDA0
#define PINK        0xFC9F
#define PURPLE      0x780F
#define RED         0xF800
#define BRIGHT_RED  0xf810
#define WHITE       0xFFFF
#define YELLOW      0xFFE0

#define MINPRESSURE 10
#define MAXPRESSURE 1000

int backlight = 43

void setup() {
  Serial.begin(9600);
  tft.reset();
  uint16_t identifier = tft.readID();
  tft.begin(identifier);
  tft.setRotation(1);
  pinMode(backlight, OUTPUT);
  digitalWrite(backlight, 400);
}

void loop() {
  // put your main code here, to run repeatedly:

}

Members

Is it possible to directly connect my ILI9341 LITE pin to the DUE’s #43 to be used as a backlight control?
The backlight has 4 white LED backlights,transistor connected.

The link for the screen is at the top of the sketch.

Thanks

#2

Post a link to the actual display that you have bought.
I need to see what the pcb looks like.

#3

david_prentice:
Post a link to the actual display that you have bought.
I need to see what the pcb looks like.

#4

Oops, I missed the link that was embedded in your sketch.

You appear to have independent data bus, control signals, touch signals, backlight control.

Yes, you can use PWM on the LCD_LITE pin.
Yes, you can read and write GRAM memory
Yes, you can call Touchscreen without worrying about shared pins.

By default MCUFRIEND_kbv will assume regular Shield wiring.
You can configure a SPECIAL for MCUFRIEND_kbv to use the Due hardware more efficiently.

David.

#5

Thanks for all the info David.

#6