thermosphere: seriaLog => debugLog, add DEBUG macro

thermosphere/src/debug_log.c

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2019 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include "debug_log.h"
+#include "platform/uart.h"
+#include "utils.h"
+
+// NOTE: UNSAFE!
+int debugLog(const char *fmt, ...)
+{
+    char buf[128];
+    va_list args;
+    va_start(args, fmt);
+    int res = vsprintf(buf, fmt, args);
+    va_end(args);
+
+    uartWriteData(buf, (size_t)res);
+    return res;
+}