ok im sorry if i wasn't clear:
my setup is arduino Mega
adafruit RA8875
adafruit 40 pin 5" tft LCD (no touch)
I am running through SPI (like adafruit recommends)
connections are as follows
because I'm running a mega i am using:
digital pins
10 - CS
9 - RST
52 - SCK
50 - MOSI
51 - MISO
3 - INT
This setup works fine and displays with adafruit_RA8875 library code:
#include <SPI.h>
#include "Adafruit_GFX.h"
#include "Adafruit_RA8875.h"
// Library only supports hardware SPI at this time
// Connect SCLK to UNO Digital #13 (Hardware SPI clock)
// Connect MISO to UNO Digital #12 (Hardware SPI MISO)
// Connect MOSI to UNO Digital #11 (Hardware SPI MOSI)
#define RA8875_INT 3
#define RA8875_CS 10
#define RA8875_RESET 9
Adafruit_RA8875 tft = Adafruit_RA8875(RA8875_CS, RA8875_RESET);
uint16_t tx, ty;
void setup()
{
Serial.begin(9600);
Serial.println("RA8875 start");
/* Initialise the display using 'RA8875_480x272' or 'RA8875_800x480' */
if (!tft.begin(RA8875_480x272)) {
Serial.println("RA8875 Not Found!");
while (1);
}
Serial.println("Found RA8875");
tft.displayOn(true);
tft.GPIOX(true); // Enable TFT - display enable tied to GPIOX
tft.PWM1config(true, RA8875_PWM_CLK_DIV1024); // PWM output for backlight
tft.PWM1out(255);
// With hardware accelleration this is instant
tft.fillScreen(RA8875_WHITE);
// Play with PWM
for (uint8_t i=255; i!=0; i-=5 )
{
tft.PWM1out(i);
delay(10);
}
for (uint8_t i=0; i!=255; i+=5 )
{
tft.PWM1out(i);
delay(10);
}
tft.PWM1out(255);
tft.fillScreen(RA8875_RED);
delay(500);
tft.fillScreen(RA8875_YELLOW);
delay(500);
tft.fillScreen(RA8875_GREEN);
delay(500);
tft.fillScreen(RA8875_CYAN);
delay(500);
tft.fillScreen(RA8875_MAGENTA);
delay(500);
tft.fillScreen(RA8875_BLACK);
// Try some GFX acceleration!
tft.drawCircle(100, 100, 50, RA8875_BLACK);
tft.fillCircle(100, 100, 49, RA8875_GREEN);
tft.fillRect(11, 11, 398, 198, RA8875_BLUE);
tft.drawRect(10, 10, 400, 200, RA8875_GREEN);
tft.fillRoundRect(200, 10, 200, 100, 10, RA8875_RED);
tft.drawPixel(10,10,RA8875_BLACK);
tft.drawPixel(11,11,RA8875_BLACK);
tft.drawLine(10, 10, 200, 100, RA8875_RED);
tft.drawTriangle(200, 15, 250, 100, 150, 125, RA8875_BLACK);
tft.fillTriangle(200, 16, 249, 99, 151, 124, RA8875_YELLOW);
tft.drawEllipse(300, 100, 100, 40, RA8875_BLACK);
tft.fillEllipse(300, 100, 98, 38, RA8875_GREEN);
// Argument 5 (curvePart) is a 2-bit value to control each corner (select 0, 1, 2, or 3)
tft.drawCurve(50, 100, 80, 40, 2, RA8875_BLACK);
tft.fillCurve(50, 100, 78, 38, 2, RA8875_WHITE);
pinMode(RA8875_INT, INPUT);
digitalWrite(RA8875_INT, HIGH);
tft.touchEnable(true);
Serial.print("Status: "); Serial.println(tft.readStatus(), HEX);
Serial.println("Waiting for touch events ...");
}
void loop()
{
float xScale = 1024.0F/tft.width();
float yScale = 1024.0F/tft.height();
/* Wait around for touch events */
if (! digitalRead(RA8875_INT))
{
if (tft.touched())
{
Serial.print("Touch: ");
tft.touchRead(&tx, &ty);
Serial.print(tx); Serial.print(", "); Serial.println(ty);
/* Draw a circle */
tft.fillCircle((uint16_t)(tx/xScale), (uint16_t)(ty/yScale), 4, RA8875_WHITE);
}
}
}
but with sumotoy's RA8875 library it is not working with any configuration. I have tried to change pins, i read through al of his notes, and can't figure it out. here is an example code im trying to get work, just a basic setup and can't get this to work. I am just getting a white screen wit sumo toy's library.
/*
Explain the minimal setup and how to use instances...
*/
#include <SPI.h>
#include <RA8875.h>
/*
Arduino's
You are using 4 wire SPI here, so:
MOSI: 11//Arduino UNO
MISO: 12//Arduino UNO
SCK: 13//Arduino UNO
the rest of pin below:
*/
#define RA8875_CS 10 //Uno and 8 bit AVR can use any pin
#define RA8875_RESET 9//any pin, if you wnat to disable just set at 255 or not use at all
RA8875 tft = RA8875(RA8875_CS,RA8875_RESET);//arduino's
//RA8875 tft = RA8875(RA8875_CS);//arduino's no rst
void setup()
{
Serial.begin(38400);
//long unsigned debug_start = millis ();
//while (!Serial && ((millis () - debug_start) <= 5000)) ;
Serial.println("RA8875 start");
/*
If you have an Adafruit RA8875 board + display choose:
Adafruit_480x272 , Adafruit_800x480
If you have any other display you have to choose:
RA8875_480x272 , RA8875_800x480
*/
tft.begin(RA8875_800x480);
/*
By default the library init display at 16bit color depth but
you can optionally force the display to work at 8 bit:
tft.begin(RA8875_480x272,8);//force 8bit color depth
*/
//Now that board it's inited you can use any draw or text command:
tft.print("Hello World!");//did you see it?
}
void loop()
{
}
Getting the graphics to display with the screen is step one to me. then I will have to (which i think is way easier) assign a pin to read voltage (12v) and get the minimum working voltage (i believe its 9v still have to test) and divide the numbers in-between by 10 to get the arduino to just read the serial monitor and use those numbers to display a graphic. I hope this is more clear.
Not telling use you fixed it, THAT'S rude 