diff --git a/arch/arm/arch_profile.cmake b/arch/arm/arch_profile.cmake
index 37285ca..0122a7e 100644
--- a/arch/arm/arch_profile.cmake
+++ b/arch/arm/arch_profile.cmake
@@ -1,8 +1,8 @@
 # Architecture profile: ARM family
 
 set(EMBEDDIP_ARCH_SOURCES
-    arch/arm/cm7_common.c
-    arch/arm/cm7_fft.c
+    arch/arm/dwt_timer.c
+    arch/arm/cmsis_fft.c
 )
 
 set(EMBEDDIP_ARCH_DEFINES
diff --git a/device/serial/serial.h b/device/serial/serial.h
index 6ffa1b9..0a7e9f3 100755
--- a/device/serial/serial.h
+++ b/device/serial/serial.h
@@ -45,6 +45,10 @@ extern serial_t stm32_uart;
 extern serial_t esp32_uart;
 #endif
 
+#ifdef EMBED_DIP_BOARD_STM32H7S
+extern serial_t stm32h7s_uart;
+#endif
+
 #ifdef __cplusplus
 }
 #endif