1 files changed, 14 insertions, 0 deletions
diff --git a/boiler-monster/stm32/app/util.c b/boiler-monster/stm32/app/util.c
new file mode 100644
index 0000000..bf65510
--- /dev/null
+++ b/boiler-monster/stm32/app/util.c
@@ -0,0 +1,14 @@
+#include "project.h"
+
+char int_to_hex_char (int a)
+{
+  if (a < 0) return '?';
+
+  if (a < 0xa) return '0' + a;
+
+  if (a < 0x10) return '7' + a;
+
+  return '?';
+}
+
+