Bonjour à tous,
j'utilise un arduino uno et j'arrive avec le Serial.print à afficher des caractères japonais en utilisant l'unicode par exemple (\u3042) jusqu'ici tout va bien... 
Le problème c'est que je souhaite afficher le caractère japonais sur un TFT LCD 3.5" est là c'est le drame rien ne s'affiche... je ne comprends pas d'ou viens le problème... :o
si vous avez des réponses je suis preneur
merci d'avance !!
Good morning all,
I use an arduino uno and I arrive with Serial.print to display Japanese characters using unicode for example (\ u3042) that's work
The problem is that I want to display the Japanese character on a TFT LCD 3.5 " nothing is displayed ... I do not understand where the problem comes ...: o
if you have answers tell me please
Thanks !
Which TFT?
Which library?
If you are using an Adafruit_GFX style library, you can use U8g2_for_Adafruit_GFX.h which is available via the Library Manager.
David.
Thanks David for responding,
i use Kuman SC3A-NEW-UK, UNOR3 3.5"
and library is:
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_TFTLCD.h> // Hardware-specific library
Install the library.
Try:
#include <Adafruit_TFTLCD.h>
#define LCD_CS A3 // Chip Select goes to Analog 3
#define LCD_CD A2 // Command/Data goes to Analog 2
#define LCD_WR A1 // LCD Write goes to Analog 1
#define LCD_RD A0 // LCD Read goes to Analog 0
#define LCD_RESET A4 // Can alternately just connect to Arduino's reset pin
Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
#include <U8g2_for_Adafruit_GFX.h>
U8G2_FOR_ADAFRUIT_GFX u8g2_for_adafruit_gfx;
void setup()
{
tft.begin(tft.readID());
u8g2_for_adafruit_gfx.begin(tft); // connect u8g2 procedures to Adafruit GFX
u8g2_for_adafruit_gfx.setForegroundColor(0xFFFF); //TFT_WHITE
u8g2_for_adafruit_gfx.setBackgroundColor(0x0000); //TFT_BLACK Adafruit GFX color
}
void loop(void)
{
u8g2_for_adafruit_gfx.setFont(u8g2_font_unifont_t_japanese1); // use japanese
//u8g2_for_adafruit_gfx.setFont(u8g2_font_unifont_t_chinese2); // use chinese2
//u8g2_for_adafruit_gfx.setFont(u8g2_font_10x20_t_cyrillic); // use Russian
u8g2_for_adafruit_gfx.setFontDirection(0);
tft.fillScreen(0x0000); //TFT_BLACK);
u8g2_for_adafruit_gfx.setCursor(0, 30);
u8g2_for_adafruit_gfx.print("Hello World!");
u8g2_for_adafruit_gfx.setCursor(0, 60);
u8g2_for_adafruit_gfx.print("こんにちは世界"); // Japanese "Hello World"
//u8g2_for_adafruit_gfx.print("你好世界"); // Chinese "Hello World"
//u8g2_for_adafruit_gfx.print("Привет, мир"); // Russian "Hello World"
delay(1000);
}
Untested. I just wrote in the Browser
Edit. Changed to u8g2_font_unifont_t_japanese1
Actually when i test your code it's write: "u8g2_font_unifont_t_japanese1"
so where find "u8g2_font_unifont_t_japanese1" ? i need to download it ?
i take screen print and i see that in U8g2_font_c
No, it comes with Olikraus's U8g2_for_Adafruit_GFX.h library.
I tested that font on a STM32. Note that Japanese fonts are very BIG. Too big for a Uno. You need a Zero, Due, Mega, Teensy3.x, ...
If you are just printing some fixed messages, you could save them as monochrome bitmap images.
This might use less memory than loading the font in Flash memory.
I suspect that the only practical solution for Chinese and Japanese is to use external Font chips.
David.
well i will buy a Mega so because i want to trained my self with kana so ithink it's the better way,
thanks for you time !
Well, i bought a MEGA and know i have some error can someone help ?
Arduino : 1.8.10 (Windows 10), Carte : "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"
c:\Temp\cc9CIyC2.ltrans0.ltrans.o: In function `main':
:(.text.startup+0x2a6): undefined reference to `u8g2_font_unifont_t_japanese1'
:(.text.startup+0x2aa): undefined reference to `u8g2_font_unifont_t_japanese1'
:(.text.startup+0x2ae): undefined reference to `u8g2_font_unifont_t_japanese1'
:(.text.startup+0x2b2): undefined reference to `u8g2_font_unifont_t_japanese1'
:(.text.startup+0x2b6): undefined reference to `u8g2_font_unifont_t_japanese1'
c:\Temp\cc9CIyC2.ltrans0.ltrans.o::(.text.startup+0x2b8): more undefined references to `u8g2_font_unifont_t_japanese1' follow
collect2.exe: error: ld returned 1 exit status
Plusieurs bibliothèque trouvées pour "Adafruit_TFTLCD.h"
Utilisé : C:\Users\Documents\Arduino\libraries\libraries\Adafruit_TFTLCD
Plusieurs bibliothèque trouvées pour "Adafruit_GFX.h"
Utilisé : C:\Users\Documents\Arduino\libraries\libraries\Adafruit_GFX
Plusieurs bibliothèque trouvées pour "U8g2_for_Adafruit_GFX.h"
Utilisé : C:\Users\Documents\Arduino\libraries\libraries\U8g2_for_Adafruit_GFX
exit status 1
Erreur de compilation pour la carte Arduino/Genuino Mega or Mega 2560
Thanks
You appear to have a screen like this:
It probably contains an ILI9486 controller.
Life is complicated with "Adafruit_TFTLCD" because it is NOT available via the Library Manager and has been hacked many times. You have to "configure" it to suit the Uno shield on a Mega2560.
I suspect that KUMAN have done the hacking for you on the CD.
Life is easier with MCUFRIEND_kbv library.
Install via IDE Library Manager.
Replace the
#include <Adafruit_TFTLCD.h>
#define LCD_CS A3 // Chip Select goes to Analog 3
#define LCD_CD A2 // Command/Data goes to Analog 2
#define LCD_WR A1 // LCD Write goes to Analog 1
#define LCD_RD A0 // LCD Read goes to Analog 0
#define LCD_RESET A4 // Can alternately just connect to Arduino's reset pin
Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
with
#include <MCUFRIEND_kbv.h>
MCUFRIEND_kbv tft;
David.
Oops. My apologies. I posted a program but only tested it on a STM32.
Sure enough. The program will not build on a Mega2560 because the Font is too big.
It runs fine on a Zero, Due, Teensy3.x, STM32, ...
Oliver's Simplified Chinese Font u8g2_font_unifont_t_chinese2 will run on a Mega2560
If there is a smaller Japanese font you might be ok.
e.g. u8g2_font_b10_t_japanese1 runs on a Mega2560 but is too small for my eyesight.
Since you have a Shield, it would be wise to find an Arduino with proper headers.
A Due clone is pretty cheap.
I like the Zero but it is expensive.
If you buy an STM32 Nucleo board it works very well e.g. Nucleo-F446 or Nucleo-L476. (And you can buy from your local ST Distributor)
David.
