minor improvement

Author: D. Teuchert

modules/GPS_module/src/GPS_module_1.c

@@ -37,14 +37,15 @@ enum GPS_return_status get_current_position(GPS_position * position) {
     uint8_t hmac_as_bytes[HMAC_LENGTH];
     if (GPS_driver_obtain_current_position(position_as_bytes, hmac_as_bytes) == 0) {
         if (crypto_verify_hmac(position_as_bytes, 16, hmac_as_bytes) == valid_hmac) {
-            GPS_position current_position = {
+            GPS_position pos = {
                 position_as_bytes[0] << 1 + position_as_bytes[1],
                 position_as_bytes[2] << 1 + position_as_bytes[3],
                 position_as_bytes[4] << 1 + position_as_bytes[5],
                 position_as_bytes[6] << 1 + position_as_bytes[7],
                 position_as_bytes[8] << 1 + position_as_bytes[9],
                 position_as_bytes[10] << 1 + position_as_bytes[11]
             };
+            *position = pos;
             return GPS_success;
         }
     }

modules/GPS_module/src/GPS_module_1.h

@@ -3,7 +3,7 @@
 
 #include "GPS_module_types.h"
 
-extern int GPS_driver_obtain_current_position(uint8_t * position_as_bytes, uint8_t * hmac_as_bytes);
+extern uint8_t GPS_driver_obtain_current_position(uint8_t * position_as_bytes, uint8_t * hmac_as_bytes);
 
 enum GPS_return_status init_crypto_module();
 

modules/crypto_module/src/crypto_module_1.h

@@ -5,7 +5,7 @@
 
 #include "crypto_module_types.h"
 
-extern int third_party_library_calc_hmac(uint8_t * const message, int len, char * const key, char * const nonce, uint8_t * hmac);
+extern uint8_t third_party_library_calc_hmac(uint8_t * const message, int len, char * const key, char * const nonce, uint8_t * hmac);
 
 void crypto_init();