From b16fec956c51f06f3bfd048f54b0894e501232bd Mon Sep 17 00:00:00 2001
From: Robert Pelnar <robert.pelnar@seznam.cz>
Date: Fri, 10 Aug 2018 16:20:53 +0200
Subject: [PATCH] Enabled pullup for RX2 pin (it prevents uart2 from rx buffer
 overflow in case of disconnected MMU)

---
 Firmware/uart2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Firmware/uart2.c b/Firmware/uart2.c
index 11015fa0..cfed5c09 100644
--- a/Firmware/uart2.c
+++ b/Firmware/uart2.c
@@ -34,6 +34,8 @@ int uart2_getchar(FILE *stream)
 //uart init (io + FILE stream)
 void uart2_init(void)
 {
+	DDRH &=	~0x01;
+	PORTH |= 0x01;
 	rbuf_ini(uart2_ibuf, sizeof(uart2_ibuf) - 4);
 	UCSR2A |= (1 << U2X2); // baudrate multiplier
 	UBRR2L = UART_BAUD_SELECT(UART2_BAUD, F_CPU); // select baudrate