adding readme

examples/servo/README.md

@@ -0,0 +1,26 @@
+Servo Controller App  
+=====================  
+
+A simple app that tests the functionality of a connected servo motor by reading its initial angle, adjusting the angle from 0 to 180 degrees, and verifying the actual angle at each step.
+
+Example Output  
+--------------  
+
+```  
+The number of available servomotors is: 1  
+Requested angle 0. Actual current angle is: 0  
+Requested angle 1. Actual current angle is: 1  
+Requested angle 2. Actual current angle is: 2  
+...  
+Requested angle 180. Actual current angle is: 180  
+```  
+
+If the servo index is out of range:  
+```  
+The index number is bigger than the available servomotors  
+```  
+
+If the servo cannot report its angle:  
+```  
+This servo cannot return its angle.  
+```  

examples/servo/main.c

@@ -11,9 +11,9 @@ int main(void) {
     return -1;
   }
   returncode_t result  = RETURNCODE_EOFF;
-  uint16_t servo_count = 0;
+  uint32_t servo_count = 0;
   libtock_servo_count(&servo_count);
-  printf("The number of available servomotors is: %d\n", servo_count);
+  printf("The number of available servomotors is: %ld\n", servo_count);
   uint16_t angle = 0;
   uint16_t index = 0; // the first index available.