altos: Add preliminary telebt v0.1 defines

[fw/altos] / src / ao.h

diff --git a/src/ao.h b/src/ao.h
index dad1f3dfba3b3a1ec748dd8ff51d574c104fbc8b..226f9a2248dd0425ebed6bf27593d245ce796384 100644 (file)
--- a/src/ao.h
+++ b/src/ao.h
@@ -1194,7 +1194,7 @@ extern __xdata uint8_t ao_stdin_ready;
 uint8_t
 ao_echo(void);
 
-void
+int8_t
 ao_add_stdio(char (*pollchar)(void),
             void (*putchar)(char) __reentrant,
             void (*flush)(void)) __reentrant;