From e1f98687c6082433efed07feabc8510b31a200fd Mon Sep 17 00:00:00 2001
From: Frederic Pillon <frederic.pillon@st.com>
Date: Wed, 16 Oct 2019 14:45:35 +0200
Subject: [PATCH] Clean declaration

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>
---
 cores/arduino/stm32/bootloader.h          | 8 ++++++++
 cores/arduino/stm32/usb/cdc/usbd_cdc_if.c | 2 --
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/cores/arduino/stm32/bootloader.h b/cores/arduino/stm32/bootloader.h
index 5e69157e12..69f18a39bb 100644
--- a/cores/arduino/stm32/bootloader.h
+++ b/cores/arduino/stm32/bootloader.h
@@ -1,6 +1,9 @@
 #ifndef _BOOTLOADER_H_
 #define _BOOTLOADER_H_
 
+
+#include <stdint.h>
+
 /* Ensure DTR_TOGGLING_SEQ enabled */
 #if defined(BL_LEGACY_LEAF) || defined(BL_HID)
 #ifndef DTR_TOGGLING_SEQ
@@ -12,6 +15,11 @@
 extern "C" {
 #endif /* __cplusplus */
 
+#ifdef DTR_TOGGLING_SEQ
+/* DTR toggling sequence management */
+void dtr_togglingHook(uint8_t *buf, uint32_t *len);
+#endif
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
diff --git a/cores/arduino/stm32/usb/cdc/usbd_cdc_if.c b/cores/arduino/stm32/usb/cdc/usbd_cdc_if.c
index b4b1933a6a..c596b899f4 100644
--- a/cores/arduino/stm32/usb/cdc/usbd_cdc_if.c
+++ b/cores/arduino/stm32/usb/cdc/usbd_cdc_if.c
@@ -56,8 +56,6 @@ __IO bool receivePended = true;
 static uint32_t transmitStart = 0;
 
 #ifdef DTR_TOGGLING_SEQ
-/* DTR toggling sequence management */
-extern void dtr_togglingHook(uint8_t *buf, uint32_t *len);
 uint8_t dtr_toggling = 0;
 #endif