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-rw-r--r--platforms/chibios/BLACKPILL_STM32_F401/configs/config.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/platforms/chibios/BLACKPILL_STM32_F401/configs/config.h b/platforms/chibios/BLACKPILL_STM32_F401/configs/config.h
index 1c9d9c6126..e181422eba 100644
--- a/platforms/chibios/BLACKPILL_STM32_F401/configs/config.h
+++ b/platforms/chibios/BLACKPILL_STM32_F401/configs/config.h
@@ -17,8 +17,13 @@
#define BOARD_OTG_NOVBUSSENS 1
-#define STM32_LSECLK 32768U
-#define STM32_HSECLK 25000000U
+#ifndef STM32_LSECLK
+# define STM32_LSECLK 32768U
+#endif // STM32_LSECLK
+
+#ifndef STM32_HSECLK
+# define STM32_HSECLK 25000000U
+#endif // STM32_HSECLK
#ifndef EARLY_INIT_PERFORM_BOOTLOADER_JUMP
# define EARLY_INIT_PERFORM_BOOTLOADER_JUMP TRUE