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 5976eb3f6657b6882d8cbfc668524f646f8387f4..daf2f4000f3a7c3fc012064ac431e5edc1378fdd 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>
 
 #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
 volatile AO_TICK_TYPE ao_tick_count;
 
 AO_TICK_TYPE


@@ -88,6 +93,8 @@ ao_timer_init(void)
                           (STM_SYSTICK_CSR_CLKSOURCE_HCLK_8 << STM_SYSTICK_CSR_CLKSOURCE));
 }
 
                           (STM_SYSTICK_CSR_CLKSOURCE_HCLK_8 << STM_SYSTICK_CSR_CLKSOURCE));
 }
 

+#endif
+

 void
 ao_clock_init(void)
 {
 void
 ao_clock_init(void)
 {