fix bugs in debug

Makefile.include

@@ -14,7 +14,7 @@ DBGFLAGS ?= -g -DNDEBUG
 
 CFLAGS   += $(OPTFLAGS) \
             $(DBGFLAGS) \
-            -std=c99 \
+            -std=gnu99 \
             -W \
             -Wall \
             -Wextra \

firmware/debug.c

@@ -35,7 +35,7 @@ void oledDebug(const char *line)
 	oledClear();
 	for (i = 0; i < 8; i++) {
 		if (lines[i]) {
-			oledDrawChar(0, i * 8, '0' + (id + i) % 10);
+			oledDrawChar(0, i * 8, '0' + (id + i) % 10, 1);
 			oledDrawString(8, i * 8, lines[i]);
 		}
 	}

firmware/messages.c

@@ -184,7 +184,7 @@ static inline void msg_out_pad(void)
 
 #if DEBUG_LINK
 
-inline void msg_debug_out_pad(void)
+static inline void msg_debug_out_pad(void)
 {
 	if (msg_debug_out_cur == 0) return;
 	while (msg_debug_out_cur < 64) {