mirror of
https://github.com/Keychron/qmk_firmware.git
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f37a134f71
* [Keyboard] Convert Corne Keyboard to Split Common * Add VIA Support * Makes sure that ol(e)d and new OLED implementation can't coexist * Add licensing header to files * Add changes based on feedback from foostan * Fixes
128 lines
3.0 KiB
C
128 lines
3.0 KiB
C
/*
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Copyright 2019 @foostan
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Copyright 2020 Drashna Jaelre <@drashna>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <avr/io.h>
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#include <avr/wdt.h>
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#include <avr/power.h>
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#include <avr/interrupt.h>
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#include <util/delay.h>
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#include <avr/eeprom.h>
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#include "split_util.h"
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#include "matrix.h"
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#include "keyboard.h"
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#include "wait.h"
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#ifdef EE_HANDS
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# include "eeconfig.h"
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#endif
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#ifdef USE_MATRIX_I2C
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# include "i2c_master.h"
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#else
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# include "split_scomm.h"
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#endif
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#ifndef SPLIT_USB_TIMEOUT
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# define SPLIT_USB_TIMEOUT 2000
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#endif
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#ifndef SPLIT_USB_TIMEOUT_POLL
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# define SPLIT_USB_TIMEOUT_POLL 10
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#endif
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volatile bool isLeftHand = true;
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bool waitForUsb(void) {
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for (uint8_t i = 0; i < (SPLIT_USB_TIMEOUT / SPLIT_USB_TIMEOUT_POLL); i++) {
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// This will return true if a USB connection has been established
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if (UDADDR & _BV(ADDEN)) {
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return true;
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}
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wait_ms(SPLIT_USB_TIMEOUT_POLL);
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}
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// Avoid NO_USB_STARTUP_CHECK - Disable USB as the previous checks seem to enable it somehow
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(USBCON &= ~(_BV(USBE) | _BV(OTGPADE)));
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return false;
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}
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__attribute__((weak)) bool is_keyboard_left(void) {
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#if defined(SPLIT_HAND_PIN)
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// Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
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setPinInput(SPLIT_HAND_PIN);
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return readPin(SPLIT_HAND_PIN);
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#elif defined(EE_HANDS)
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return eeconfig_read_handedness();
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#elif defined(MASTER_RIGHT)
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return !has_usb();
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#endif
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return has_usb();
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}
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__attribute__((weak)) bool has_usb(void) {
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static enum { UNKNOWN, MASTER, SLAVE } usbstate = UNKNOWN;
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// only check once, as this is called often
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if (usbstate == UNKNOWN) {
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#if defined(SPLIT_USB_DETECT)
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usbstate = waitForUsb() ? MASTER : SLAVE;
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#elif defined(__AVR__)
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USBCON |= (1 << OTGPADE); // enables VBUS pad
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wait_us(5);
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usbstate = (USBSTA & (1 << VBUS)) ? MASTER : SLAVE; // checks state of VBUS
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#else
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usbstate = MASTER;
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#endif
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}
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return (usbstate == MASTER);
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}
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static void keyboard_master_setup(void) {
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#ifdef USE_MATRIX_I2C
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i2c_init();
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#else
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serial_master_init();
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#endif
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}
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static void keyboard_slave_setup(void) {
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#ifdef USE_MATRIX_I2C
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i2c_slave_init(SLAVE_I2C_ADDRESS);
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#else
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serial_slave_init();
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#endif
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}
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// this code runs before the usb and keyboard is initialized
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void split_keyboard_setup(void) {
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isLeftHand = is_keyboard_left();
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if (has_usb()) {
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keyboard_master_setup();
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} else {
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keyboard_slave_setup();
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}
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sei();
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}
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