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-rw-r--r--firmware/usbstack/usb_serial.c2
-rw-r--r--firmware/usbstack/usb_serial.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/firmware/usbstack/usb_serial.c b/firmware/usbstack/usb_serial.c
index 99b8bb2..d36151a 100644
--- a/firmware/usbstack/usb_serial.c
+++ b/firmware/usbstack/usb_serial.c
@@ -169,7 +169,7 @@ static void sendout(void)
}
}
-void usb_serial_send(unsigned char *data,int length)
+void usb_serial_send(const unsigned char *data,int length)
{
int freestart, available_end_space, i;
diff --git a/firmware/usbstack/usb_serial.h b/firmware/usbstack/usb_serial.h
index 2701a96..f1a603c 100644
--- a/firmware/usbstack/usb_serial.h
+++ b/firmware/usbstack/usb_serial.h
@@ -32,7 +32,7 @@ void usb_serial_disconnect(void);
void usb_serial_transfer_complete(int ep,int dir, int status, int length);
bool usb_serial_control_request(struct usb_ctrlrequest* req, unsigned char *dest);
-void usb_serial_send(unsigned char *data,int length);
+void usb_serial_send(const unsigned char *data, int length);
#endif