Add support for the KC60 v2.0 2015-09-12 (#360)

* Don't save the ctags file in the repo.

* Initial support for the KC60 board. Only 5x5 working so far.

* Rename because this isn't the same KC60 as others.

* Add in some generic layout.
Pins seem to be in the right order except the 6th column spews
gibberish.

* Don't need this for now.

* Move this to some other folder.

* Trying again to start over.

* Don't need to start over because I figured out why the 'broken' stuff wasn't working.

* Attempt to enable backlighting. It's on on pin B7 like other boards.

* Fix last port changes and fix LED control in keymap.

* Trying some other LED code.

* Bootloader needs to be bigger. Disabling backlight for now.

* Simplify LED code while I try to figure it out.

* Turn back on backlighting.

* Backlighting works now. Just need to get levels or breathing working.

* Trying to allow for turning off the LEDs before I get to brightness levels.

* The missing link: need to run the init_ports function for LEDs to work properly.

* Removing breathing stuff since it bricks the board.

* Clean up default layer.

* Cleanup keymap, KC60 doesn't support a 5th right bottom-row button.

1 files changed, 111 insertions, 0 deletions

diff --git a/keyboard/kc60_v2/kc60.c b/keyboard/kc60_v2/kc60.c
new file mode 100644
index 0000000000..0a578b2b88
--- /dev/null
+++ b/keyboard/kc60_v2/kc60.c
@@ -0,0 +1,111 @@
+#include "kc60.h"
+
+__attribute__ ((weak))
+  void matrix_init_user(void) {
+    // leave this function blank - it can be defined in a keymap file
+  };
+
+__attribute__ ((weak))
+  void matrix_scan_user(void) {
+    // leave this function blank - it can be defined in a keymap file
+  }
+
+__attribute__ ((weak))
+  bool process_action_user(keyrecord_t *record) {
+    // leave this function blank - it can be defined in a keymap file
+    return true;
+  }
+
+__attribute__ ((weak))
+  void led_set_user(uint8_t usb_led) {
+    // leave this function blank - it can be defined in a keymap file
+  }
+
+void matrix_init_kb(void) {
+  // put your keyboard start-up code here
+  // runs once when the firmware starts up
+
+#ifdef BACKLIGHT_ENABLE
+  backlight_init_ports();
+#endif
+
+  matrix_init_user();
+}
+
+void matrix_scan_kb(void) {
+  // put your looping keyboard code here
+  // runs every cycle (a lot)
+
+  matrix_scan_user();
+}
+
+bool process_action_kb(keyrecord_t *record) {
+  // put your per-action keyboard code here
+  // runs for every action, just before processing by the firmware
+
+  return process_action_user(record);
+}
+
+void led_set_kb(uint8_t usb_led) {
+  // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+
+  led_set_user(usb_led);
+}
+
+#ifdef BACKLIGHT_ENABLE
+#define CHANNEL OCR1B
+
+void backlight_init_ports()
+{
+
+  // Setup PB6 as output and output low.
+  DDRB |= (1<<6);
+  PORTB &= ~(1<<6);
+
+  // Use full 16-bit resolution. 
+  ICR1 = 0xFFFF;
+
+  // I could write a wall of text here to explain... but TL;DW
+  // Go read the ATmega32u4 datasheet.
+  // And this: http://blog.saikoled.com/post/43165849837/secret-konami-cheat-code-to-high-resolution-pwm-on
+
+  // Pin PB7 = OCR1C (Timer 1, Channel C)
+  // Compare Output Mode = Clear on compare match, Channel C = COM1B1=1 COM1C0=0
+  // (i.e. start high, go low when counter matches.)
+  // WGM Mode 14 (Fast PWM) = WGM13=1 WGM12=1 WGM11=1 WGM10=0
+  // Clock Select = clk/1 (no prescaling) = CS12=0 CS11=0 CS10=1
+
+  TCCR1A = _BV(COM1B1) | _BV(WGM11); // = 0b00001010;
+  TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001;
+
+  backlight_init();
+}
+
+void backlight_set(uint8_t level)
+{
+  // Prevent backlight blink on lowest level
+  PORTB &= ~(_BV(PORTB6));
+
+  if ( level == 0 )
+  {
+    // Turn off PWM control on PB6, revert to output low.
+    TCCR1A &= ~(_BV(COM1B1));
+    CHANNEL = 0x0;
+  }
+  else if ( level == BACKLIGHT_LEVELS)
+  {
+    // Turn on PWM control of PB6
+    TCCR1A |= _BV(COM1B1);
+    // Set the brightness
+    CHANNEL = 0xFFFF;
+  }
+  else        
+  {
+    // Turn on PWM control of PB6
+    TCCR1A |= _BV(COM1B1);
+    // Set the brightness
+    CHANNEL = 0xFFFF >> ((BACKLIGHT_LEVELS - level) * ((BACKLIGHT_LEVELS + 1) / 2));
+  }
+}
+
+#endif