From c55ff6b1c079e58a43e5f0f2d41cdd356a04d212 Mon Sep 17 00:00:00 2001
From: Silver Kits <silver.kits@eesti.ee>
Date: Mon, 5 Dec 2016 12:12:03 +0200
Subject: [PATCH] Add SPI and RFID-RC522 pin definitions for Arduino Mega

---
 lib/matejx_avr_lib/hwdefs.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 lib/matejx_avr_lib/hwdefs.h

diff --git a/lib/matejx_avr_lib/hwdefs.h b/lib/matejx_avr_lib/hwdefs.h
new file mode 100644
index 0000000..691753e
--- /dev/null
+++ b/lib/matejx_avr_lib/hwdefs.h
@@ -0,0 +1,20 @@
+#ifndef MAT_HWDEFS_H
+#define MAT_HWDEFS_H
+
+#define DDR(x) (*(&x - 1))
+#define PIN(x) (*(&x - 2))
+
+#define MFRC522_SS_PORT     PORTB
+#define MFRC522_SS_BIT      0
+
+#define MFRC522_RST_PORT    PORTL
+#define MFRC522_RST_BIT     0
+
+#define SCK_DDR     DDRB
+#define SCK_BIT     DDB1
+#define MOSI_DDR    DDRB
+#define MOSI_BIT    DDB2
+#define MISO_DDR    DDRB
+#define MISO_BIT    DDB3
+
+#endif
\ No newline at end of file