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-rw-r--r--prototype/fw/include/global.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/prototype/fw/include/global.h b/prototype/fw/include/global.h
index d0c56d7..0af7e49 100644
--- a/prototype/fw/include/global.h
+++ b/prototype/fw/include/global.h
@@ -12,6 +12,8 @@
#include <generated/stm32_device.h>
+#define COUNT_OF(x) ((sizeof(x)/sizeof(0[x])) / ((size_t)(!(sizeof(x) % sizeof(0[x])))))
+
#define APB1_PRESC (1<<(APBPrescTable[(RCC->CFGR & RCC_CFGR_PPRE1_Msk) >> RCC_CFGR_PPRE1_Pos]))
#define APB2_PRESC (1<<(APBPrescTable[(RCC->CFGR & RCC_CFGR_PPRE2_Msk) >> RCC_CFGR_PPRE2_Pos]))
#define AHB_PRESC (1<<(AHBPrescTable[(RCC->CFGR & RCC_CFGR_HPRE_Msk) >> RCC_CFGR_HPRE_Pos]))