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/* Copyright 2022 @ lokher (https://www.keychron.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 "quantum.h"
#include "bluetooth.h"
#include "indicator.h"
#include "lpm.h"
#if defined(PROTOCOL_CHIBIOS)
# include <usb_main.h>
#endif
#include "transport.h"
#ifndef REINIT_LED_DRIVER
# define REINIT_LED_DRIVER 1
#endif
#if defined(PROTOCOL_CHIBIOS)
extern host_driver_t chibios_driver;
#endif
extern host_driver_t bluetooth_driver;
extern keymap_config_t keymap_config;
static transport_t transport = TRANSPORT_USB;
#ifdef NKRO_ENABLE
nkro_t nkro = {false, false};
#endif
static void transport_changed(transport_t new_transport);
__attribute__((weak)) void bt_transport_enable(bool enable) {
if (enable) {
if (host_get_driver() != &bluetooth_driver) {
host_set_driver(&bluetooth_driver);
/* Disconnect and reconnect to sync the bluetooth state
* TODO: query bluetooth state to sync
*/
bluetooth_disconnect();
bluetooth_connect();
// TODO: Clear USB report
}
} else {
indicator_stop();
if (bluetooth_get_state() == BLUETOOTH_CONNECTED) {
report_keyboard_t empty_report = {0};
bluetooth_driver.send_keyboard(&empty_report);
}
}
}
/* There is no dedicated pin for USB power on chip such as STM32L432, but USB power
* can be connected and disconnected via registers.
* Overwrite these two functions if such chip is used. */
__attribute__((weak)) void usb_power_connect(void) {}
__attribute__((weak)) void usb_power_disconnect(void) {}
__attribute__((weak)) void usb_transport_enable(bool enable) {
if (enable) {
if (host_get_driver() != &chibios_driver) {
#if !defined(KEEP_USB_CONNECTION_IN_BLUETOOTH_MODE)
usb_power_connect();
usb_start(&USBD1);
#endif
host_set_driver(&chibios_driver);
}
} else {
if (USB_DRIVER.state == USB_ACTIVE) {
report_keyboard_t empty_report = {0};
chibios_driver.send_keyboard(&empty_report);
}
#if !defined(KEEP_USB_CONNECTION_IN_BLUETOOTH_MODE)
usbStop(&USBD1);
usbDisconnectBus(&USBD1);
usb_power_disconnect();
#endif
}
}
void set_transport(transport_t new_transport) {
if (transport != new_transport) {
transport = new_transport;
clear_keyboard();
switch (transport) {
case TRANSPORT_USB:
usb_transport_enable(true);
bt_transport_enable(false);
lpm_timer_stop();
#ifdef NKRO_ENABLE
# if defined(BLUETOOTH_NKRO_ENABLE)
nkro.bluetooth = keymap_config.nkro;
# endif
keymap_config.nkro = nkro.usb;
#endif
break;
case TRANSPORT_BLUETOOTH:
bt_transport_enable(true);
usb_transport_enable(false);
lpm_timer_reset();
#if defined(NKRO_ENABLE)
nkro.usb = keymap_config.nkro;
# if defined(BLUETOOTH_NKRO_ENABLE)
keymap_config.nkro = nkro.bluetooth;
# else
keymap_config.nkro = FALSE;
# endif
#endif
break;
default:
break;
}
transport_changed(transport);
}
}
transport_t get_transport(void) {
return transport;
}
/* Changing transport may cause bronw-out reset of led driver
* withoug MCU reset, which lead backlight to not work,
* reinit the led driver workgound this issue */
static void reinit_led_drvier(void) {
/* Wait circuit to discharge for a while */
systime_t start = chVTGetSystemTime();
while (chTimeI2MS(chVTTimeElapsedSinceX(start)) < 100) {};
#ifdef LED_MATRIX_ENABLE
led_matrix_init();
#endif
#ifdef RGB_MATRIX_ENABLE
rgb_matrix_init();
#endif
}
void transport_changed(transport_t new_transport) {
#if (REINIT_LED_DRIVER)
reinit_led_drvier();
#endif
#if defined(RGB_MATRIX_ENABLE) && defined(RGB_MATRIX_TIMEOUT)
# if (RGB_MATRIX_TIMEOUT > 0)
rgb_matrix_disable_timeout_set(RGB_MATRIX_TIMEOUT_INFINITE);
rgb_matrix_disable_time_reset();
# endif
#endif
#if defined(LED_MATRIX_ENABLE) && defined(LED_MATRIX_TIMEOUT)
# if (LED_MATRIX_TIMEOUT > 0)
led_matrix_disable_timeout_set(LED_MATRIX_TIMEOUT_INFINITE);
led_matrix_disable_time_reset();
# endif
#endif
}
void usb_remote_wakeup(void) {
if (USB_DRIVER.state == USB_SUSPENDED) {
while (USB_DRIVER.state == USB_SUSPENDED) {
/* Do this in the suspended state */
suspend_power_down(); // on AVR this deep sleeps for 15ms
/* Remote wakeup */
if (suspend_wakeup_condition()) {
usbWakeupHost(&USB_DRIVER);
usb_wakeup(&USB_DRIVER);
}
}
wait_ms(500);
/* Woken up */
// variables has been already cleared by the wakeup hook
send_keyboard_report();
}
}
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