Problème avec Graphic Test U8G2

[emile5819]

Bonjour.
Excusez-moi, c'est pour vous demander, si vous pouvez m'aider s'il vous plaît, pour corriger les erreurs ci-dessous, je pense qu'il y a modifier quelque caractère. Je ne suis pas expert, si vous pouvez m’aider. Parce qu’ici j’ai des modules à le programmé, le problème se trouve dans U8g2 par exemple : // ou () Ou si vous voulez corrigé pour moi,

Je vous en remercie beaucoup de votre aide. Mes amies
A+

C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_prepare()':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:367:3: error: 'u8g2' was not declared in this scope
367 | u8g2.setFont (u8g2_font_6x10_tf);
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_box_frame(uint8_t)':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:375:3: error: 'u8g2' was not declared in this scope
375 | u8g2.drawStr( 0, 0, "drawBox");
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_disc_circle(uint8_t)':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:384:3: error: 'u8g2' was not declared in this scope
384 | u8g2.drawStr( 0, 0, "drawDisc");
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_r_frame(uint8_t)':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:393:3: error: 'u8g2' was not declared in this scope
393 | u8g2.drawStr( 0, 0, "drawRFrame/Box");
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_string(uint8_t)':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:399:3: error: 'u8g2' was not declared in this scope
399 | u8g2.setFontDirection(0);
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_line(uint8_t)':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:410:3: error: 'u8g2' was not declared in this scope
410 | u8g2.drawStr( 0, 0, "drawLine");
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_triangle(uint8_t)':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:419:3: error: 'u8g2' was not declared in this scope
419 | u8g2.drawStr( 0, 0, "drawTriangle");
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_ascii_1()':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:429:3: error: 'u8g2' was not declared in this scope
429 | u8g2.drawStr( 0, 0, "ASCII page 1");
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_ascii_2()':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:441:3: error: 'u8g2' was not declared in this scope
441 | u8g2.drawStr( 0, 0, "ASCII page 2");
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_extra_page(uint8_t)':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:452:3: error: 'u8g2' was not declared in this scope
452 | u8g2.drawStr( 0, 0, "Unicode");
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_bitmap_overlay(uint8_t)':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:502:3: error: 'u8g2' was not declared in this scope
502 | u8g2.drawStr(0, 0, "Bitmap overlay");
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void u8g2_bitmap_modes(uint8_t)':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:521:3: error: 'u8g2' was not declared in this scope
521 | u8g2.drawBox(0, frame_size * 0.5, frame_size * 5, frame_size);
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void setup()':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:563:3: error: 'u8g2' was not declared in this scope
563 | u8g2.begin();
| ^~~~
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino: In function 'void loop()':
C:\Users\fautr\Documents\Arduino\u8g2-master\u8g2-master\sys\arduino\u8g2_full_buffer\GraphicsTest\GraphicsTest.ino:568:3: error: 'u8g2' was not declared in this scope
568 | u8g2.clearBuffer();
| ^~~~

exit status 1

Compilation error: 'u8g2' was not declared in this scope