1 files changed, 58 insertions, 0 deletions
diff --git a/keyboard/kmac/backlight.c b/keyboard/kmac/backlight.c
new file mode 100644
index 0000000000..af38f658ae
--- /dev/null
+++ b/keyboard/kmac/backlight.c
@@ -0,0 +1,58 @@
+/*
+Copyright 2013 Mathias Andersson <wraul@dbox.se>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <avr/io.h>
+#include "backlight.h"
+
+/* Backlight pin configuration
+ * F-row: High PB1
+ * W: Low PB4
+ * A: Low PB2
+ * S: Low PB3
+ * D: Low PD7
+ */
+void backlight_set(uint8_t level)
+{
+    // Set as output.
+    DDRB |= (1<<1) | (1<<2) | (1<<3) | (1<<4);
+    DDRD |= (1<<7);
+
+    // F-row
+    if(level & (1<<0))
+    {
+        PORTB |= (1<<1);
+    }
+    else
+    {
+        PORTB &= ~(1<<1);
+    }
+    // WASD
+    if(level & (1<<1))
+    {
+        PORTB &= ~(1<<4);
+        PORTB &= ~(1<<2);
+        PORTB &= ~(1<<3);
+        PORTD &= ~(1<<7);
+    }
+    else
+    {
+        PORTB |= (1<<4);
+        PORTB |= (1<<2);
+        PORTB |= (1<<3);
+        PORTD |= (1<<7);
+    }
+}