Some implementations of led matrix

common/led_matrix.c

@@ -18,3 +18,32 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <avr/io.h>
 #include <avr/interrupt.h>
 #include "led_matrix.h"
+
+#define LED_MATRIX_TIMER_TOP F_CPU/(256*64)/LED_MATRIX_ROWS
+
+void led_matrix_init(void)
+{
+    /* Timer1 setup */
+    /* CTC mode */
+    TCCR1B |= (1<<WGM12);
+    /* Clock selelct: clk/1 */
+    TCCR1B |= (1<<CS10);
+    /* Set TOP value */
+    uint8_t sreg = SREG;
+    cli();
+    OCR1AH = (LED_MATRIX_TIMER_TOP >> 8) & 0xFF;
+    OCR1AL = LED_MATRIX_TIMER_TOP & 0xFF;
+    SREG = sreg;
+}
+
+void led_matrix_enable(void)
+{
+    /* Enable Compare Match Interrupt */
+    TIMSK1 |= _BV(OCIE1A);
+}
+
+void led_matrix_disable(void)
+{
+    /* Disable Compare Match Interrupt */
+    TIMSK1 &= ~_BV(OCIE1A);
+}

common/led_matrix.h

@@ -31,11 +31,17 @@ typedef struct {
     uint8_t value;
 } led_matrix_element_t;
 
+#ifdef LED_MATRIX_ENABLE
 uint8_t led_matrix_rows(void);
 uint8_t led_matrix_cols(void);
 void led_matrix_init(void);
 void led_matrix_enable(void);
 void led_matrix_disable(void);
 uint8_t led_matrix_scan(void);
+#else
+#define led_matrix_rows()
+#define led_matrix_cols()
+#define led_matrix_init()
+#endif
 
 #endif

keyboard/gh60/led_matrix.c

@@ -0,0 +1,17 @@
+/*
+Copyright 2013,2014 Kai Ryu <kai1103@gmail.com>
+
+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/>.
+*/
+