1 files changed, 8 insertions, 0 deletions
diff --git a/sendchar.h b/sendchar.h
new file mode 100644
index 0000000000..37be091162
--- /dev/null
+++ b/sendchar.h
@@ -0,0 +1,8 @@
+#ifndef SENDCHAR_H
+#define SENDCHAR_H
+
+/* transmit a character.  return 0 on success, -1 on error. */
+int8_t sendchar(uint8_t c);
+
+#endif
+