fix warnings

main/drivers/game_timer.cpp

@@ -51,7 +51,7 @@ void stop_module_timer(void) {
     is_module_playing = false;
 }
 
-void set_game_time(uint32_t new_time) {
+void set_game_time(int32_t new_time) {
     if (new_time > 0) {
         game_time_count_up = false;
         game_time_left = new_time;
@@ -62,8 +62,12 @@ void set_game_time(uint32_t new_time) {
     write_game_time(game_time_left);
 }
 
-uint32_t get_game_time() {
-    return game_time_left;
+int32_t get_game_time() {
+    if (game_time_count_up) {
+        return -((int32_t) game_time_left);
+    } else {
+        return ((int32_t) game_time_left);
+    }
 }
 
 void set_module_time(uint32_t new_time) {

main/drivers/game_timer.h

@@ -18,9 +18,9 @@ void start_module_timer(void);
 void stop_module_timer(void);
 
 /// Sets the game time in ms
-void set_game_time(uint32_t new_time);
+void set_game_time(int32_t new_time);
 /// Gets the current game time in ms
-uint32_t get_game_time();
+int32_t get_game_time();
 
 /// Gets the current game time in ms
 void time_penalty(uint32_t penalty);

main/drivers/wires.cpp

@@ -79,7 +79,7 @@ void clear_wires_pressed_released_cut(void) {
     button_released = false;
 }
 
-void strike(char* reason) {
+void strike(const char* reason) {
     ESP_LOGW("strike!", "%s", reason);
     lcd_set_cursor(&lcd, 0, 3);
     lcd_print(&lcd, reason);

main/drivers/wires.h

@@ -29,6 +29,6 @@ void clear_wires_pressed_released_cut(void);
 
 void set_leds(uint8_t led_states);
 
-void strike(char* reason);
+void strike(const char* reason);
 
 #endif /* WIRES_HPP */