trying out some different stuff

keyboards/_xmega/_xmega.c

@@ -0,0 +1 @@
+#include "_xmega.h"

keyboards/_xmega/_xmega.h

@@ -0,0 +1,3 @@
+#include "quantum.h"
+
+#define KEYMAP(k) { { k } }

keyboards/_xmega/config.h

@@ -0,0 +1,48 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x6060
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    _SPINDLE
+#define PRODUCT         XMEGA
+#define DESCRIPTION     test board
+
+/* key matrix size */
+#define MATRIX_ROWS 1
+#define MATRIX_COLS 1
+
+/* key matrix pins */
+#define MATRIX_ROW_PINS { D0 }
+#define MATRIX_COL_PINS { A0 }
+#define UNUSED_PINS
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/* number of backlight levels */
+// #define BACKLIGHT_PIN B6
+// #define BACKLIGHT_LEVELS 5
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCING_DELAY 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* key combination for command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* prevent stuck modifiers */
+#define PREVENT_STUCK_MODIFIERS
+#undef USE_STATIC_OPTIONS
+#define USE_STATIC_OPTIONS (USB_DEVICE_OPT_FULLSPEED | USB_OPT_RC32MCLKSRC | USB_OPT_BUSEVENT_PRIHIGH)
+#endif

keyboards/_xmega/keymaps/default/keymap.c

@@ -0,0 +1,5 @@
+#include "_xmega.h"
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+	KEYMAP(KC_A)
+};

keyboards/_xmega/rules.mk

@@ -0,0 +1,56 @@
+# MCU name
+MCU = atxmega32a4u
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 32000000
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = XMEGA
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = 48000000
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+
+# Boot Section Size in *bytes*
+OPT_DEFS += -DBOOTLOADER_SIZE=4096
+
+
+# Build Options
+#   comment out to disable the options.
+#
+BOOTMAGIC_ENABLE = yes	# Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = yes	# Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes	# Audio control and System control(+450)
+CONSOLE_ENABLE = no	# Console for debug(+400)
+COMMAND_ENABLE = no    # Commands for debug and configuration
+SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
+NKRO_ENABLE = yes		# USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = no  # Enable keyboard backlight functionality
+AUDIO_ENABLE = no
+RGBLIGHT_ENABLE = no

tmk_core/common/avr/bootloader.c

@@ -6,7 +6,9 @@
 #include <avr/wdt.h>
 #include <util/delay.h>
 #include "bootloader.h"
+#ifndef __AVR_XMEGA__
     #include <avr/boot.h>
+#endif
 
 #ifdef PROTOCOL_LUFA
 #include <LUFA/Drivers/USB/USB.h>
@@ -152,7 +154,7 @@ void bootloader_jump(void) {
 
     #else // Assume remaining boards are DFU, even if the flag isn't set
 
-        #ifndef __AVR_ATmega32A__ // no USB - maybe BOOTLOADER_BOOTLOADHID instead though?
+        #ifdef BOOTLOADER_BOOTLOADHID // no USB - maybe BOOTLOADER_BOOTLOADHID instead though?
             UDCON = 1;
             USBCON = (1<<FRZCLK);  // disable USB
             UCSR1B = 0;
@@ -178,6 +180,11 @@ void bootloader_jump(void) {
     #define MCUSR MCUCSR
 #endif
 
+#ifdef __AVR_XMEGA__
+    #define MCUSR RST_STATUS
+    #define WDRF RST_WDRF_bp
+#endif
+
 /* this runs before main() */
 void bootloader_jump_after_watchdog_reset(void) __attribute__ ((used, naked, section (".init3")));
 void bootloader_jump_after_watchdog_reset(void)

tmk_core/common/avr/suspend.c

@@ -20,6 +20,11 @@
 #endif /* AUDIO_ENABLE */
 
 
+#ifdef __AVR_XMEGA__
+
+#define wdt_intr_enable(value) wdt_enable(value)
+
+#else
 
 #define wdt_intr_enable(value)   \
 __asm__ __volatile__ (  \
@@ -37,6 +42,7 @@ __asm__ __volatile__ (  \
     : "r0"  \
 )
 
+#endif
 
 void suspend_idle(uint8_t time)
 {
@@ -134,6 +140,7 @@ void suspend_wakeup_init(void)
 	led_set(host_keyboard_leds());
 }
 
+#ifndef __AVR_XMEGA__
 #ifndef NO_SUSPEND_POWER_DOWN
 /* watchdog timeout */
 ISR(WDT_vect)
@@ -148,3 +155,4 @@ ISR(WDT_vect)
     }
 }
 #endif
+#endif

tmk_core/common/avr/suspend_avr.h

@@ -7,6 +7,7 @@
 #include <avr/wdt.h>
 #include <avr/interrupt.h>
 
+#ifndef __AVR_XMEGA__
 
 #define wdt_intr_enable(value)   \
 __asm__ __volatile__ (  \
@@ -25,3 +26,5 @@ __asm__ __volatile__ (  \
 )
 
 #endif
+
+#endif

tmk_core/common/avr/timer.c

@@ -43,6 +43,7 @@ void timer_init(void)
 #   error "Timer prescaler value is NOT vaild."
 #endif
 
+#ifndef __AVR_XMEGA__
 #ifndef __AVR_ATmega32A__
     // Timer0 CTC mode
     TCCR0A = 0x02;
@@ -58,6 +59,13 @@ void timer_init(void)
     OCR0 = TIMER_RAW_TOP;
     TIMSK = (1 << OCIE0);
 #endif
+#else
+    TCC0.CTRLE = 0x01;         // set timer in 8bit mode (default is 16 bits)
+    TCC0.INTCTRLA = 0x02;     // Interrupt Enable register A (enable INT for tc0 (medium level))
+    TCC0.PER = 132;                // set period to 228 khz
+    TCC0.PERBUF = 132;         // buffer for writing to TCC0.PER.
+    TCC0.CTRLA = prescaler;         // clk=30324000 H
+#endif
 }
 
 inline
@@ -117,11 +125,15 @@ uint32_t timer_elapsed32(uint32_t last)
 }
 
 // excecuted once per 1ms.(excess for just timer count?)
+#ifndef __AVR_XMEGA__
 #ifndef __AVR_ATmega32A__
 #define TIMER_INTERRUPT_VECTOR TIMER0_COMPA_vect
 #else
 #define TIMER_INTERRUPT_VECTOR TIMER0_COMP_vect
 #endif
+#else
+#define TIMER_INTERRUPT_VECTOR TCE0_OVF_vect
+#endif
 ISR(TIMER_INTERRUPT_VECTOR, ISR_NOBLOCK)
 {
     timer_count++;

tmk_core/protocol/lufa/lufa.c

@@ -1082,6 +1082,7 @@ void virtser_send(const uint8_t byte)
  ******************************************************************************/
 static void setup_mcu(void)
 {
+  #ifndef __AVR_XMEGA__
     /* Disable watchdog if enabled by bootloader/fuses */
     MCUSR &= ~(1 << WDRF);
     wdt_disable();
@@ -1091,6 +1092,7 @@ static void setup_mcu(void)
 
     CLKPR = (1 << CLKPCE);
     CLKPR = (0 << CLKPS3) | (0 << CLKPS2) | (0 << CLKPS1) | (0 << CLKPS0);
+  #endif
 }
 
 static void setup_usb(void)

tmk_core/protocol/lufa/lufa.h

@@ -61,6 +61,11 @@ extern host_driver_t lufa_driver;
 }
 #endif
 
+#ifdef __AVR_XMEGA__
+    #define MCUSR RST_STATUS
+    #define WDRF RST_WDRF_bp
+#endif
+
 /* extra report structure */
 typedef struct {
     uint8_t  report_id;