bface refactor (#6333)

* remove custom matrix support

* remove custom i2c and led driver

* minor cleanups

* update readme

11 files changed, 84 insertions, 415 deletions

diff --git a/keyboards/winkeyless/bface/README.md b/keyboards/winkeyless/bface/README.md
index f1789b04c..da0eb8088 100644
--- a/keyboards/winkeyless/bface/README.md
+++ b/keyboards/winkeyless/bface/README.md
@@ -14,6 +14,8 @@ Flashing
 
 ps2avr(GB) boards use an atmega32a microcontroller and a different bootloader. It is not flashable using the regular QMK methods. 
 
+**Reset Key:** Hold down the key located at K00, commonly programmed as left control while plugging in the keyboard.
+
 Windows: 
 1. Download [HIDBootFlash](http://vusb.wikidot.com/project:hidbootflash).
 2. Place your keyboard into reset. 
@@ -33,7 +35,7 @@ macOS:
 3. Install the following packages:
     ```
     brew install python
-    brew install pyusb
+    pip3 install pyusb
     brew install --HEAD`https://raw.githubusercontent.com/robertgzr/homebrew-tap/master/bootloadhid.rb
     ```
 
diff --git a/keyboards/winkeyless/bface/backlight_ps2avrGB.c b/keyboards/winkeyless/bface/backlight_ps2avrGB.c
deleted file mode 100644
index c0f642840..000000000
--- a/keyboards/winkeyless/bface/backlight_ps2avrGB.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/* Copyright 2017 Sebastian Kaim
- *
- * 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/>.
- */
-
-#ifdef BACKLIGHT_ENABLE
-
-#include "backlight_ps2avrGB.h"
-#define sbi(reg,bit)	reg |= (_BV(bit))
-#define cbi(reg,bit)	reg &= (~_BV(bit))
-#define PWM10	WGM10
-#define PWM11	WGM11
-#define COM1x1 COM1B1
-#define OCR1x  OCR1B
-
-void backlight_init_ports(void)
-{
-#if BACKLIGHT_ON_STATE == 0
-	backlight_off();
-#else
-	backlight_on();
-#endif
-
-	// setup pwm
-	// this bitmagic is sourced from the original firmware
-	/*TCCR1B = ((TCCR1B & ~0x07) | 0x03);
-	TCNT1H = 0;
-	TCNT1L = 0;
-	sbi(TIMSK, TOIE1);
-	OCR1BH = 0;
-	OCR1BL = 0;
-	cbi(TCCR1A,PWM11);
-	sbi(TCCR1A,PWM10);
-	sbi(TCCR1A,COM1B1);
-	cbi(TCCR1A,COM1B0);*/
-	ICR1 = 0xFFFF;
-
-    TCCR1A = _BV(COM1x1) | _BV(WGM11); // = 0b00001010;
-    TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001;
-
-	backlight_init();
-}
-
-void backlight_set(uint8_t level)
-{
-	if( level == 0 ) {
-		backlight_off();
-	}
-	else {
-		backlight_on();
-		/*uint8_t pwm = get_pwm_for_brightness(level);
-		set_backlight_pwm(pwm);
-		TCCR1A |= _BV(COM1x1);
-		OCR1x = (level >= 2) ? 0xFFFF : 0x00FF;*/
-	}
-}
-
-#define PWM_MAX 0xFF
-uint8_t get_pwm_for_brightness(uint8_t level)
-{
-	// we need to cast up here to allow multiplication with 0xFF. We could also use floats, but this is probably a lot faster.
-	uint16_t brightness = (uint16_t)level * (uint16_t)PWM_MAX / (uint16_t)BACKLIGHT_LEVELS;
-	return (uint8_t)brightness;
-}
-
-void backlight_on(void)
-{
-	//_SFR_IO8(0x12) |= _BV(0x4);
-	LED_PIN |= BACKLIGHT_PORT_NUM;
-}
-
-void backlight_off(void)
-{
-	//_SFR_IO8(0x12) &= ~_BV(0x4);
-	LED_PIN &= ~BACKLIGHT_PORT_NUM;
-}
-
-void set_backlight_pwm(uint8_t level) {
-	// this does not work (yet)
-	//OCR1B = level;
-}
-
-#endif // BACKLIGHT_ENABLE
diff --git a/keyboards/winkeyless/bface/backlight_ps2avrGB.h b/keyboards/winkeyless/bface/backlight_ps2avrGB.h
deleted file mode 100644
index d5ca90399..000000000
--- a/keyboards/winkeyless/bface/backlight_ps2avrGB.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Copyright 2017 Sebastian Kaim
- *
- * 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/>.
- */
-
-
-#if defined(__AVR__)
-#include <avr/pgmspace.h>
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#endif
-#include <stddef.h>
-#include <stdlib.h>
-#include "backlight.h"
-
-#ifndef PS2AVRGB_BACKLIGHT_H
-#define PS2AVRGB_BACKLIGHT_H
-
-uint8_t get_pwm_for_brightness(uint8_t level);
-void set_backlight_pwm(uint8_t level);
-void backlight_on(void);
-void backlight_off(void);
-
-#endif
diff --git a/keyboards/winkeyless/bface/bface.c b/keyboards/winkeyless/bface/bface.c
index 8422a4a40..1c83be4b8 100644
--- a/keyboards/winkeyless/bface/bface.c
+++ b/keyboards/winkeyless/bface/bface.c
@@ -1,30 +1,23 @@
-/*
-Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-Copyright 2018 Sebastian Kaim <sebb@sebb767.de>
-
-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 "bface.h"
+/* Copyright 2019 MechMerlin
+ *
+ * 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 "rgblight.h"
-
-#include <avr/pgmspace.h>
-
-#include "action_layer.h"
-#include "i2c.h"
+#include "i2c_master.h"
 #include "quantum.h"
 
+#ifdef RGBLIGHT_ENABLE
 extern rgblight_config_t rgblight_config;
 
 void rgblight_set(void) {
@@ -37,10 +30,59 @@ void rgblight_set(void) {
     }
 
     i2c_init();
-    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
+    i2c_transmit(0xb0, (uint8_t*)led, 3 * RGBLED_NUM, 100);
+}
+#endif
+
+void matrix_init_kb(void) {
+#ifdef RGBLIGHT_ENABLE
+    if (rgblight_config.enable) {
+        i2c_init();
+        i2c_transmit(0xb0, (uint8_t*)led, 3 * RGBLED_NUM, 100);
+    }
+#endif
+    // call user level keymaps, if any
+    matrix_init_user();
+}
+
+void matrix_scan_kb(void) {
+#ifdef RGBLIGHT_ENABLE
+    rgblight_task();
+#endif
+    matrix_scan_user();
+    /* Nothing else for now. */
 }
 
 __attribute__ ((weak))
 void matrix_scan_user(void) {
-    rgblight_task();
+}
+
+void backlight_init_ports(void) {
+    // initialize pins D0, D1, D4 and D6 as output
+    setPinOutput(D0);
+    setPinOutput(D1);
+    setPinOutput(D4);
+    setPinOutput(D6);
+
+    // turn backlight LEDs on
+    writePinHigh(D0);
+    writePinHigh(D1);
+    writePinHigh(D4);
+    writePinHigh(D6);
+}
+
+void backlight_set(uint8_t level) {
+	if (level == 0) {
+        // turn backlight LEDs off
+        writePinLow(D0);
+        writePinLow(D1);
+        writePinLow(D4);
+        writePinLow(D6);
+	} else {
+        // turn backlight LEDs on
+        writePinHigh(D0);
+        writePinHigh(D1);
+        writePinHigh(D4);
+        writePinHigh(D6);
+	}
 }
diff --git a/keyboards/winkeyless/bface/bface.h b/keyboards/winkeyless/bface/bface.h
index 62d62f695..f7a3b9521 100644
--- a/keyboards/winkeyless/bface/bface.h
+++ b/keyboards/winkeyless/bface/bface.h
@@ -16,8 +16,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef KEYMAP_COMMON_H
-#define KEYMAP_COMMON_H
+#pragma once
 
 #include "quantum_keycodes.h"
 #include "keycode.h"
@@ -27,8 +26,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
   K04, K14, K24, K34, K44, K54, K16, KB6, KB7, K17, KA4, KB4, KC4, KE4, \
   K03, K13, K23, K33, K43, K53, K26, KC6, KC7, K27, KA3, KB3, KC3, KD3, \
   K02, K12, K22, K32, K42, K52, K36, KD6, KD7, K37, KA2, KB2,      KD2, \
-  K01, K11, K21, K31, K41, K51, K46, KE6, KE7, K47, KA1, KB1, \
-  K00, K10, K20,           K56,                K57, KA0, KB0, KC0  \
+  K01, K11, K21, K31, K41, K51, K46, KE6, KE7, K47, KA1, KB1,           \
+  K00, K10, K20,           K56,                K57, KA0, KB0, KC0       \
 ){ \
   { K00,   K10,   K20,   KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KA0,   KB0,   KC0,   KC_NO, KC_NO }, \
   { K01,   K11,   K21,   K31,   K41,   K51,   KC_NO, KC_NO, KC_NO, KC_NO, KA1,   KB1,   KC_NO, KC_NO, KC_NO }, \
@@ -37,8 +36,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
   { K04,   K14,   K24,   K34,   K44,   K54,   KC_NO, KC_NO, KC_NO, KC_NO, KA4,   KB4,   KC4,   KC_NO, KE4   }, \
   { KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO }, \
   { KC_NO, K16,   K26,   K36,   K46,   K56,   KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KB6,   KC6,   KD6,   KE6   }, \
-  { KC_NO, K17,   K27,   K37,   K47,   K57,   KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KB7,   KC7,   KD7,   KE7   } \
+  { KC_NO, K17,   K27,   K37,   K47,   K57,   KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KB7,   KC7,   KD7,   KE7   }  \
 }
 
-
-#endif
diff --git a/keyboards/winkeyless/bface/config.h b/keyboards/winkeyless/bface/config.h
index 11ac373c0..7a1fe3335 100644
--- a/keyboards/winkeyless/bface/config.h
+++ b/keyboards/winkeyless/bface/config.h
@@ -16,8 +16,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef CONFIG_H
-#define CONFIG_H
+#pragma once
 
 #define VENDOR_ID       0x20A0
 #define PRODUCT_ID      0x422D
@@ -30,6 +29,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROWS 8
 #define MATRIX_COLS 15
 
+//                        0   1   2   3   4   5   6   7   8   9   A   B   C   D   E
+#define MATRIX_ROW_PINS { B0, B1, B2, B3, B4, B5, B6, B7 }
+#define MATRIX_COL_PINS { A0, A1, A2, A3, A4, A5, A6, A7, C7, C6, C5, C4, C3, C2, D7}
+#define UNUSED_PINS
+
 #define RGBLED_NUM 16
 #define RGBLIGHT_ANIMATIONS
 
@@ -43,4 +47,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 	#define BACKLIGHT_PORT_NUM (1 << 4)
 #endif
 
-#endif
diff --git a/keyboards/winkeyless/bface/i2c.c b/keyboards/winkeyless/bface/i2c.c
deleted file mode 100644
index c27f3e3d1..000000000
--- a/keyboards/winkeyless/bface/i2c.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@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/>.
-*/
-
-#include <avr/io.h>
-#include <util/twi.h>
-
-#include "i2c.h"
-
-void i2c_set_bitrate(uint16_t bitrate_khz) {
-    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
-    if (bitrate_div >= 16) {
-        bitrate_div = (bitrate_div - 16) / 2;
-    }
-    TWBR = bitrate_div;
-}
-
-void i2c_init(void) {
-    // set pull-up resistors on I2C bus pins
-    PORTC |= 0b11;
-
-    i2c_set_bitrate(400);
-
-    // enable TWI (two-wire interface)
-    TWCR |= (1 << TWEN);
-
-    // enable TWI interrupt and slave address ACK
-    TWCR |= (1 << TWIE);
-    TWCR |= (1 << TWEA);
-}
-
-uint8_t i2c_start(uint8_t address) {
-    // reset TWI control register
-    TWCR = 0;
-
-    // begin transmission and wait for it to end
-    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the start condition was successfully transmitted
-    if ((TWSR & 0xF8) != TW_START) {
-        return 1;
-    }
-
-    // transmit address and wait
-    TWDR = address;
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    // check if the device has acknowledged the READ / WRITE mode
-    uint8_t twst = TW_STATUS & 0xF8;
-    if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) {
-        return 1;
-    }
-
-    return 0;
-}
-
-void i2c_stop(void) {
-    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
-}
-
-uint8_t i2c_write(uint8_t data) {
-    TWDR = data;
-
-    // transmit data and wait
-    TWCR = (1<<TWINT) | (1<<TWEN);
-    while (!(TWCR & (1<<TWINT)));
-
-    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
-        return 1;
-    }
-
-    return 0;
-}
-
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
-    if (i2c_start(address)) {
-        return 1;
-    }
-
-    for (uint16_t i = 0; i < length; i++) {
-        if (i2c_write(data[i])) {
-            return 1;
-        }
-    }
-
-    i2c_stop();
-
-    return 0;
-}
diff --git a/keyboards/winkeyless/bface/i2c.h b/keyboards/winkeyless/bface/i2c.h
deleted file mode 100644
index 27c9d3d05..000000000
--- a/keyboards/winkeyless/bface/i2c.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
-Copyright 2016 Luiz Ribeiro <luizribeiro@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/>.
-*/
-
-#ifndef __I2C_H__
-#define __I2C_H__
-
-void i2c_init(void);
-void i2c_set_bitrate(uint16_t bitrate_khz);
-uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
-
-#endif
diff --git a/keyboards/winkeyless/bface/matrix.c b/keyboards/winkeyless/bface/matrix.c
deleted file mode 100644
index b3761a63c..000000000
--- a/keyboards/winkeyless/bface/matrix.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
-Copyright 2017 Luiz Ribeiro <luizribeiro@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/>.
-*/
-
-#include <avr/io.h>
-#include <util/delay.h>
-
-#include "matrix.h"
-
-#ifndef DEBOUNCE
-#   define DEBOUNCE	5
-#endif
-
-static uint8_t debouncing = DEBOUNCE;
-
-static matrix_row_t matrix[MATRIX_ROWS];
-static matrix_row_t matrix_debouncing[MATRIX_ROWS];
-
-void matrix_init(void) {
-    // all outputs for rows high
-    DDRB = 0xFF;
-    PORTB = 0xFF;
-    // all inputs for columns
-    DDRA = 0x00;
-    DDRC &= ~(0x111111<<2);
-    DDRD &= ~(1<<PIND7);
-    // all columns are pulled-up
-    PORTA = 0xFF;
-    PORTC |= (0b111111<<2);
-    PORTD |= (1<<PIND7);
-
-    // initialize matrix state: all keys off
-    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
-        matrix[row] = 0x00;
-        matrix_debouncing[row] = 0x00;
-    }
-
-	// activate backlight
-	//PORTD |= (1 << 4);
-	//_SFR_IO8(0x09) |= (1 << 4); //_BV(0x94 & 0xF);
-	//
-	// this is the code that *should* be executed in quantum.c
-	_SFR_IO8(0x12) |= _BV(0x4);
-}
-
-void matrix_set_row_status(uint8_t row) {
-    DDRB = (1 << row);
-    PORTB = ~(1 << row);
-}
-
-uint8_t bit_reverse(uint8_t x) {
-    x = ((x >> 1) & 0x55) | ((x << 1) & 0xaa);
-    x = ((x >> 2) & 0x33) | ((x << 2) & 0xcc);
-    x = ((x >> 4) & 0x0f) | ((x << 4) & 0xf0);
-    return x;
-}
-
-uint8_t matrix_scan(void) {
-    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
-        matrix_set_row_status(row);
-        _delay_us(5);
-
-        matrix_row_t cols = (
-            // cols 0..7, PORTA 0 -> 7
-            (~PINA) & 0xFF
-        ) | (
-            // cols 8..13, PORTC 7 -> 0
-            bit_reverse((~PINC) & 0xFF) << 8
-        ) | (
-            // col 14, PORTD 7
-            ((~PIND) & (1 << PIND7)) << 7
-        );
-
-        if (matrix_debouncing[row] != cols) {
-            matrix_debouncing[row] = cols;
-            debouncing = DEBOUNCE;
-        }
-    }
-
-    if (debouncing) {
-        if (--debouncing) {
-            _delay_ms(1);
-        } else {
-            for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
-                matrix[i] = matrix_debouncing[i];
-            }
-        }
-    }
-
-    matrix_scan_user();
-
-    return 1;
-}
-
-inline matrix_row_t matrix_get_row(uint8_t row) {
-    return matrix[row];
-}
-
-void matrix_print(void) {
-}
diff --git a/keyboards/winkeyless/bface/rules.mk b/keyboards/winkeyless/bface/rules.mk
index 369ccf2ed..b6d172f26 100644
--- a/keyboards/winkeyless/bface/rules.mk
+++ b/keyboards/winkeyless/bface/rules.mk
@@ -25,7 +25,7 @@ NO_SUSPEND_POWER_DOWN = yes
 F_CPU = 12000000
 
 # build options
-BOOTMAGIC_ENABLE = yes
+BOOTMAGIC_ENABLE = no
 MOUSEKEY_ENABLE = yes
 EXTRAKEY_ENABLE = yes
 CONSOLE_ENABLE = no
@@ -40,8 +40,7 @@ OPT_DEFS = -DDEBUG_LEVEL=0
 OPT_DEFS += -DBOOTLOADER_SIZE=2048
 
 # custom matrix setup
-CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c backlight_ps2avrGB.c
+SRC = i2c_master.c
 
 # programming options
 PROGRAM_CMD = ./util/atmega32a_program.py $(TARGET).hex
diff --git a/keyboards/winkeyless/bface/usbconfig.h b/keyboards/winkeyless/bface/usbconfig.h
index f87922615..192d80d91 100644
--- a/keyboards/winkeyless/bface/usbconfig.h
+++ b/keyboards/winkeyless/bface/usbconfig.h
@@ -8,8 +8,7 @@
  * This Revision: $Id: usbconfig-prototype.h 785 2010-05-30 17:57:07Z cs $
  */
 
-#ifndef __usbconfig_h_included__
-#define __usbconfig_h_included__
+#pragma once
 
 #include "config.h"
 
@@ -392,5 +391,3 @@ section at the end of this file).
 /* #define USB_INTR_PENDING        EIFR */
 #define USB_INTR_PENDING_BIT    INTF1
 #define USB_INTR_VECTOR         INT1_vect
-
-#endif /* __usbconfig_h_included__ */