altos: Support mega-style logging without ADC

Used for TeleGPS, just exposes the necessary log writing function
without also including the ADC writing code.

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

1 files changed, 5 insertions, 0 deletions

diff --git a/src/core/ao_log.c b/src/core/ao_log.c
index 7884ec3c..8bcb7707 100644
--- a/src/core/ao_log.c
+++ b/src/core/ao_log.c
@@ -278,6 +278,11 @@ ao_log_init(void)
 
 	ao_cmd_register(&ao_log_cmds[0]);
 
+#ifndef HAS_ADC
+#error Define HAS_ADC for ao_log.c
+#endif
+#if HAS_ADC
 	/* Create a task to log events to eeprom */
 	ao_add_task(&ao_log_task, ao_log, "log");
+#endif
 }