altos: remove monitor disable stubs from altimeter code

Monitor mode in the ground-station boards must be disabled when the
radio is going to be used for another purpose, or the radio parameters
changed. That places monitor-mode disable calls in other parts of the
system which are shared with the altimeter code.

Elide the ao_set_monitor calls for builds which do not include any
monitoring code.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/ao_monitor.c b/src/ao_monitor.c
index 8f1b9e12..69eb58e8 100644
--- a/src/ao_monitor.c
+++ b/src/ao_monitor.c
@@ -18,6 +18,10 @@
 #include "ao.h"
 #include "ao_telem.h"
 
+#if !HAS_MONITOR
+#error Must define HAS_MONITOR to 1
+#endif
+
 __xdata uint8_t ao_monitoring;
 __pdata uint8_t ao_monitor_led;