converting integers to char for GFX

Projects Programming
3

Thanks for such a fast reply! I tried this and didn't work:

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"

#define TFT_CS 10
#define TFT_DC 9
#define TFT_RES 8

Adafruit_ILI9341 tft = Adafruit_ILI9341( TFT_CS, TFT_DC, TFT_RES );

void setup() {
  Serial.begin( 115200 );
  tft.begin();
  tft.setRotation( 1 );
  tft.fillScreen( ILI9341_RED );
  
  // below works
  tft.drawChar( 190, 100, '7' , ILI9341_WHITE, ILI9341_BLACK, 5);

/* below doesn't work
int a=1;
char b[1];
String str;
str=String(a);
str.toCharArray(b,1);
tft.drawChar( 190, 100, b, ILI9341_WHITE, ILI9341_BLACK, 5);
 */
}

void loop() {

}