From 89f16443c2ef8e6075dc542e7d9b865c30e6715d Mon Sep 17 00:00:00 2001
From: Snafu <stuff@c-gabriel.at>
Date: Fri, 14 Oct 2016 03:11:56 +0200
Subject: [PATCH] Fixed UART 3 check

If UART 3 is selected it should be checked if UDR3 is defined and not if UDR1 is defined.
---
 optiboot/bootloaders/optiboot/pin_defs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/optiboot/bootloaders/optiboot/pin_defs.h b/optiboot/bootloaders/optiboot/pin_defs.h
index 6570671..a352e06 100644
--- a/optiboot/bootloaders/optiboot/pin_defs.h
+++ b/optiboot/bootloaders/optiboot/pin_defs.h
@@ -61,7 +61,7 @@
 # define UART_SRL UBRR2L
 # define UART_UDR UDR2
 #elif UART == 3
-#if !defined(UDR1)
+#if !defined(UDR3)
 #error UART == 3, but no UART3 on device
 #endif
 # define UART_SRA UCSR3A