few changes

.gitignore

 WiringPi/
+MyInclude/
 *.out
-*.o
\ No newline at end of file
+*.o

Makefile

@@ -14,6 +14,6 @@ compile_switch :
 compile_motor :
 	gcc -o motor motor.c -lwiringPi
 
-
+.PHONY : clean
 clean :
 	rm *.o
\ No newline at end of file

encoder.c

@@ -19,6 +19,11 @@ const int SS_BAR_2 = 3;         //from RASPI to FPGA    -> enable encoder
 
 int main(int argc, char const *argv[])
 {   
+    if (wiringPiSetup() == -1) {
+        printf("WiringPiSetup failed\n");
+        exit(EXIT_FAILURE);
+    }
+
     pinMode(ENC_PIN_1A, INPUT);
     pinMode(ENC_PIN_1B, INPUT);
     pinMode(ENC_PIN_2A, INPUT);

motor.c

@@ -13,7 +13,8 @@ int wheelSpeed = 600;
 int main(int argc, char const *argv[])
 {
     if (wiringPiSetup() == -1) {
-        exit(1);
+        printf("WiringPiSetup failed\n");
+        exit(EXIT_FAILURE);
     }
     pinMode(PWM_PIN_RIGHT, PWM_OUTPUT);
     pinMode(PWM_PIN_LEFT, PWM_OUTPUT);

switch.c

 #include <stdio.h>
 #include <stdlib.h>
 #include <stdbool.h>
+#include <conio.h>
 
 #include <wiringPi.h>
 
@@ -9,8 +10,10 @@ const int PIN_SWITCH_LEFT  = 29;
 
 int main(int argc, char const *argv[])
 {
-    if (wiringPiSetup() == -1) exit(1);
-
+    if (wiringPiSetup() == -1) {
+        printf("WiringPiSetup failed\n");
+        exit(EXIT_FAILURE);
+    }
     pinMode(PIN_SWITCH_RIGHT, INPUT);
     pinMode(PIN_SWITCH_LEFT, INPUT);
     
@@ -23,6 +26,8 @@ int main(int argc, char const *argv[])
             printf("Vous avez poussé sur le uswitch gauche\n");
             delay(300);
         }
+
+        if ()
     }
 
     return 0;