altos/stm: Allow core timer to be excluded from build

This removes all of the support for the base 100Hz timer from the
system, saving space when not needed

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

diff --git a/src/stm/ao_timer.c b/src/stm/ao_timer.c
index 8b7c2327ff2bdd34f93e7f93a8351f0c3ff63a4f..ff477a03b7dc04515642669bbcba190ec7305baa 100644 (file)
--- a/src/stm/ao_timer.c
+++ b/src/stm/ao_timer.c
@@ -18,6 +18,11 @@
 #include "ao.h"
 #include <ao_task.h>
 
+#ifndef HAS_TICK
+#define HAS_TICK 1
+#endif
+
+#if HAS_TICK
 volatile AO_TICK_TYPE ao_tick_count;
 
 AO_TICK_TYPE
@@ -31,10 +36,6 @@ volatile __data uint8_t      ao_data_interval = 1;
 volatile __data uint8_t        ao_data_count;
 #endif
 
-void
-ao_debug_out(char c);
-
-
 void stm_tim6_isr(void)
 {
        if (stm_tim6.sr & (1 << STM_TIM67_SR_UIF)) {
@@ -110,6 +111,8 @@ ao_timer_init(void)
                        (1 << STM_TIM67_CR1_CEN));
 }
 
+#endif
+
 void
 ao_clock_init(void)
 {