altos: Use SYSTICK on STM32L

[fw/altos] / src / stm / ao_arch.h

diff --git a/src/stm/ao_arch.h b/src/stm/ao_arch.h
index 007f7e2ed3ac85e675244dc547f20dac82cc78e9..27a942f219f42b6303820f8f4e77bb64e1ebefa1 100644 (file)
--- a/src/stm/ao_arch.h
+++ b/src/stm/ao_arch.h
@@ -99,6 +99,7 @@ extern const uint32_t ao_radio_cal;
 #define AO_HCLK                (AO_SYSCLK / AO_AHB_PRESCALER)
 #define AO_PCLK1       (AO_HCLK / AO_APB1_PRESCALER)
 #define AO_PCLK2       (AO_HCLK / AO_APB2_PRESCALER)
+#define AO_SYSTICK     (AO_HCLK / 8)
 
 #if AO_APB1_PRESCALER == 1
 #define AO_TIM23467_CLK                AO_PCLK1