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qmk_firmware/tmk_core/protocol/chibios/usb_main.c

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/*
* (c) 2015 flabberast <s3+flabbergast@sdfeu.org>
*
* Based on the following work:
* - Guillaume Duc's raw hid example (MIT License)
* https://github.com/guiduc/usb-hid-chibios-example
* - PJRC Teensy examples (MIT License)
* https://www.pjrc.com/teensy/usb_keyboard.html
* - hasu's TMK keyboard code (GPL v2 and some code Modified BSD)
* https://github.com/tmk/tmk_keyboard/
* - ChibiOS demo code (Apache 2.0 License)
* http://www.chibios.org
*
* Since some GPL'd code is used, this work is licensed under
* GPL v2 or later.
*/
/*
* Implementation notes:
*
* USBEndpointConfig - Configured using explicit order instead of struct member name.
* This is due to ChibiOS hal LLD differences, which is dependent on hardware,
* "USBv1" devices have `ep_buffers` and "OTGv1" have `in_multiplier`.
* Given `USBv1/hal_usb_lld.h` marks the field as "not currently used" this code file
* makes the assumption this is safe to avoid littering with preprocessor directives.
*/
#include <ch.h>
#include <hal.h>
#include <string.h>
#include "usb_main.h"
#include "host.h"
#include "debug.h"
#include "suspend.h"
#ifdef SLEEP_LED_ENABLE
# include "sleep_led.h"
# include "led.h"
#endif
#include "wait.h"
#include "usb_descriptor.h"
#include "usb_driver.h"
#ifdef NKRO_ENABLE
# include "keycode_config.h"
extern keymap_config_t keymap_config;
#endif
#ifdef JOYSTICK_ENABLE
# include "joystick.h"
#endif
/* ---------------------------------------------------------
* Global interface variables and declarations
* ---------------------------------------------------------
*/
#ifndef usb_lld_connect_bus
# define usb_lld_connect_bus(usbp)
#endif
#ifndef usb_lld_disconnect_bus
# define usb_lld_disconnect_bus(usbp)
#endif
uint8_t keyboard_idle __attribute__((aligned(2))) = 0;
uint8_t keyboard_protocol __attribute__((aligned(2))) = 1;
uint8_t keyboard_led_state = 0;
volatile uint16_t keyboard_idle_count = 0;
static virtual_timer_t keyboard_idle_timer;
static void keyboard_idle_timer_cb(void *arg);
report_keyboard_t keyboard_report_sent = {{0}};
#ifdef MOUSE_ENABLE
report_mouse_t mouse_report_blank = {0};
#endif /* MOUSE_ENABLE */
#ifdef EXTRAKEY_ENABLE
uint8_t extra_report_blank[3] = {0};
#endif /* EXTRAKEY_ENABLE */
/* ---------------------------------------------------------
* Descriptors and USB driver objects
* ---------------------------------------------------------
*/
/* HID specific constants */
#define HID_GET_REPORT 0x01
#define HID_GET_IDLE 0x02
#define HID_GET_PROTOCOL 0x03
#define HID_SET_REPORT 0x09
#define HID_SET_IDLE 0x0A
#define HID_SET_PROTOCOL 0x0B
/*
* Handles the GET_DESCRIPTOR callback
*
* Returns the proper descriptor
*/
static const USBDescriptor *usb_get_descriptor_cb(USBDriver *usbp, uint8_t dtype, uint8_t dindex, uint16_t wIndex) {
(void)usbp;
static USBDescriptor desc;
uint16_t wValue = ((uint16_t)dtype << 8) | dindex;
desc.ud_string = NULL;
desc.ud_size = get_usb_descriptor(wValue, wIndex, (const void **const) & desc.ud_string);
if (desc.ud_string == NULL)
return NULL;
else
return &desc;
}
#ifndef KEYBOARD_SHARED_EP
/* keyboard endpoint state structure */
static USBInEndpointState kbd_ep_state;
/* keyboard endpoint initialization structure (IN) - see USBEndpointConfig comment at top of file */
static const USBEndpointConfig kbd_ep_config = {
USB_EP_MODE_TYPE_INTR, /* Interrupt EP */
NULL, /* SETUP packet notification callback */
kbd_in_cb, /* IN notification callback */
NULL, /* OUT notification callback */
KEYBOARD_EPSIZE, /* IN maximum packet size */
0, /* OUT maximum packet size */
&kbd_ep_state, /* IN Endpoint state */
NULL, /* OUT endpoint state */
2, /* IN multiplier */
NULL /* SETUP buffer (not a SETUP endpoint) */
};
#endif
#if defined(MOUSE_ENABLE) && !defined(MOUSE_SHARED_EP)
/* mouse endpoint state structure */
static USBInEndpointState mouse_ep_state;
/* mouse endpoint initialization structure (IN) - see USBEndpointConfig comment at top of file */
static const USBEndpointConfig mouse_ep_config = {
USB_EP_MODE_TYPE_INTR, /* Interrupt EP */
NULL, /* SETUP packet notification callback */
mouse_in_cb, /* IN notification callback */
NULL, /* OUT notification callback */
MOUSE_EPSIZE, /* IN maximum packet size */
0, /* OUT maximum packet size */
&mouse_ep_state, /* IN Endpoint state */
NULL, /* OUT endpoint state */
2, /* IN multiplier */
NULL /* SETUP buffer (not a SETUP endpoint) */
};
#endif
#ifdef SHARED_EP_ENABLE
/* shared endpoint state structure */
static USBInEndpointState shared_ep_state;
/* shared endpoint initialization structure (IN) - see USBEndpointConfig comment at top of file */
static const USBEndpointConfig shared_ep_config = {
USB_EP_MODE_TYPE_INTR, /* Interrupt EP */
NULL, /* SETUP packet notification callback */
shared_in_cb, /* IN notification callback */
NULL, /* OUT notification callback */
SHARED_EPSIZE, /* IN maximum packet size */
0, /* OUT maximum packet size */
&shared_ep_state, /* IN Endpoint state */
NULL, /* OUT endpoint state */
2, /* IN multiplier */
NULL /* SETUP buffer (not a SETUP endpoint) */
};
#endif
#if STM32_USB_USE_OTG1
typedef struct {
size_t queue_capacity_in;
size_t queue_capacity_out;
USBInEndpointState in_ep_state;
USBOutEndpointState out_ep_state;
USBInEndpointState int_ep_state;
USBEndpointConfig inout_ep_config;
USBEndpointConfig int_ep_config;
const QMKUSBConfig config;
QMKUSBDriver driver;
} usb_driver_config_t;
#else
typedef struct {
size_t queue_capacity_in;
size_t queue_capacity_out;
USBInEndpointState in_ep_state;
USBOutEndpointState out_ep_state;
USBInEndpointState int_ep_state;
USBEndpointConfig in_ep_config;
USBEndpointConfig out_ep_config;
USBEndpointConfig int_ep_config;
const QMKUSBConfig config;
QMKUSBDriver driver;
} usb_driver_config_t;
#endif
#if STM32_USB_USE_OTG1
/* Reusable initialization structure - see USBEndpointConfig comment at top of file */
# define QMK_USB_DRIVER_CONFIG(stream, notification, fixedsize) \
{ \
.queue_capacity_in = stream##_IN_CAPACITY, .queue_capacity_out = stream##_OUT_CAPACITY, \
.inout_ep_config = \
{ \
stream##_IN_MODE, /* Interrupt EP */ \
NULL, /* SETUP packet notification callback */ \
qmkusbDataTransmitted, /* IN notification callback */ \
qmkusbDataReceived, /* OUT notification callback */ \
stream##_EPSIZE, /* IN maximum packet size */ \
stream##_EPSIZE, /* OUT maximum packet size */ \
NULL, /* IN Endpoint state */ \
NULL, /* OUT endpoint state */ \
2, /* IN multiplier */ \
NULL /* SETUP buffer (not a SETUP endpoint) */ \
}, \
.int_ep_config = \
{ \
USB_EP_MODE_TYPE_INTR, /* Interrupt EP */ \
NULL, /* SETUP packet notification callback */ \
qmkusbInterruptTransmitted, /* IN notification callback */ \
NULL, /* OUT notification callback */ \
CDC_NOTIFICATION_EPSIZE, /* IN maximum packet size */ \
0, /* OUT maximum packet size */ \
NULL, /* IN Endpoint state */ \
NULL, /* OUT endpoint state */ \
2, /* IN multiplier */ \
NULL, /* SETUP buffer (not a SETUP endpoint) */ \
}, \
.config = { \
.usbp = &USB_DRIVER, \
.bulk_in = stream##_IN_EPNUM, \
.bulk_out = stream##_OUT_EPNUM, \
.int_in = notification, \
.in_buffers = stream##_IN_CAPACITY, \
.out_buffers = stream##_OUT_CAPACITY, \
.in_size = stream##_EPSIZE, \
.out_size = stream##_EPSIZE, \
.fixed_size = fixedsize, \
.ib = (__attribute__((aligned(4))) uint8_t[BQ_BUFFER_SIZE(stream##_IN_CAPACITY, stream##_EPSIZE)]){}, \
.ob = (__attribute__((aligned(4))) uint8_t[BQ_BUFFER_SIZE(stream##_OUT_CAPACITY, stream##_EPSIZE)]){}, \
} \
}
#else
/* Reusable initialization structure - see USBEndpointConfig comment at top of file */
# define QMK_USB_DRIVER_CONFIG(stream, notification, fixedsize) \
{ \
.queue_capacity_in = stream##_IN_CAPACITY, .queue_capacity_out = stream##_OUT_CAPACITY, \
.in_ep_config = \
{ \
stream##_IN_MODE, /* Interrupt EP */ \
NULL, /* SETUP packet notification callback */ \
qmkusbDataTransmitted, /* IN notification callback */ \
NULL, /* OUT notification callback */ \
stream##_EPSIZE, /* IN maximum packet size */ \
0, /* OUT maximum packet size */ \
NULL, /* IN Endpoint state */ \
NULL, /* OUT endpoint state */ \
2, /* IN multiplier */ \
NULL /* SETUP buffer (not a SETUP endpoint) */ \
}, \
.out_ep_config = \
{ \
stream##_OUT_MODE, /* Interrupt EP */ \
NULL, /* SETUP packet notification callback */ \
NULL, /* IN notification callback */ \
qmkusbDataReceived, /* OUT notification callback */ \
0, /* IN maximum packet size */ \
stream##_EPSIZE, /* OUT maximum packet size */ \
NULL, /* IN Endpoint state */ \
NULL, /* OUT endpoint state */ \
2, /* IN multiplier */ \
NULL, /* SETUP buffer (not a SETUP endpoint) */ \
}, \
.int_ep_config = \
{ \
USB_EP_MODE_TYPE_INTR, /* Interrupt EP */ \
NULL, /* SETUP packet notification callback */ \
qmkusbInterruptTransmitted, /* IN notification callback */ \
NULL, /* OUT notification callback */ \
CDC_NOTIFICATION_EPSIZE, /* IN maximum packet size */ \
0, /* OUT maximum packet size */ \
NULL, /* IN Endpoint state */ \
NULL, /* OUT endpoint state */ \
2, /* IN multiplier */ \
NULL, /* SETUP buffer (not a SETUP endpoint) */ \
}, \
.config = { \
.usbp = &USB_DRIVER, \
.bulk_in = stream##_IN_EPNUM, \
.bulk_out = stream##_OUT_EPNUM, \
.int_in = notification, \
.in_buffers = stream##_IN_CAPACITY, \
.out_buffers = stream##_OUT_CAPACITY, \
.in_size = stream##_EPSIZE, \
.out_size = stream##_EPSIZE, \
.fixed_size = fixedsize, \
.ib = (__attribute__((aligned(4))) uint8_t[BQ_BUFFER_SIZE(stream##_IN_CAPACITY, stream##_EPSIZE)]){}, \
.ob = (__attribute__((aligned(4))) uint8_t[BQ_BUFFER_SIZE(stream##_OUT_CAPACITY, stream##_EPSIZE)]){}, \
} \
}
#endif
typedef struct {
union {
struct {
#ifdef CONSOLE_ENABLE
usb_driver_config_t console_driver;
#endif
#ifdef RAW_ENABLE
usb_driver_config_t raw_driver;
#endif
#ifdef MIDI_ENABLE
usb_driver_config_t midi_driver;
#endif
#ifdef VIRTSER_ENABLE
usb_driver_config_t serial_driver;
#endif
#ifdef JOYSTICK_ENABLE
usb_driver_config_t joystick_driver;
#endif
#if defined(DIGITIZER_ENABLE) && !defined(DIGITIZER_SHARED_EP)
usb_driver_config_t digitizer_driver;
#endif
};
usb_driver_config_t array[0];
};
} usb_driver_configs_t;
static usb_driver_configs_t drivers = {
#ifdef CONSOLE_ENABLE
# define CONSOLE_IN_CAPACITY 4
# define CONSOLE_OUT_CAPACITY 4
# define CONSOLE_IN_MODE USB_EP_MODE_TYPE_INTR
# define CONSOLE_OUT_MODE USB_EP_MODE_TYPE_INTR
.console_driver = QMK_USB_DRIVER_CONFIG(CONSOLE, 0, true),
#endif
#ifdef RAW_ENABLE
# define RAW_IN_CAPACITY 4
# define RAW_OUT_CAPACITY 4
# define RAW_IN_MODE USB_EP_MODE_TYPE_INTR
# define RAW_OUT_MODE USB_EP_MODE_TYPE_INTR
.raw_driver = QMK_USB_DRIVER_CONFIG(RAW, 0, false),
#endif
#ifdef MIDI_ENABLE
# define MIDI_STREAM_IN_CAPACITY 4
# define MIDI_STREAM_OUT_CAPACITY 4
# define MIDI_STREAM_IN_MODE USB_EP_MODE_TYPE_BULK
# define MIDI_STREAM_OUT_MODE USB_EP_MODE_TYPE_BULK
.midi_driver = QMK_USB_DRIVER_CONFIG(MIDI_STREAM, 0, false),
#endif
#ifdef VIRTSER_ENABLE
# define CDC_IN_CAPACITY 4
# define CDC_OUT_CAPACITY 4
# define CDC_IN_MODE USB_EP_MODE_TYPE_BULK
# define CDC_OUT_MODE USB_EP_MODE_TYPE_BULK
.serial_driver = QMK_USB_DRIVER_CONFIG(CDC, CDC_NOTIFICATION_EPNUM, false),
#endif
#ifdef JOYSTICK_ENABLE
# define JOYSTICK_IN_CAPACITY 4
# define JOYSTICK_OUT_CAPACITY 4
# define JOYSTICK_IN_MODE USB_EP_MODE_TYPE_BULK
# define JOYSTICK_OUT_MODE USB_EP_MODE_TYPE_BULK
.joystick_driver = QMK_USB_DRIVER_CONFIG(JOYSTICK, 0, false),
#endif
#if defined(DIGITIZER_ENABLE) && !defined(DIGITIZER_SHARED_EP)
# define DIGITIZER_IN_CAPACITY 4
# define DIGITIZER_OUT_CAPACITY 4
# define DIGITIZER_IN_MODE USB_EP_MODE_TYPE_BULK
# define DIGITIZER_OUT_MODE USB_EP_MODE_TYPE_BULK
.digitizer_driver = QMK_USB_DRIVER_CONFIG(DIGITIZER, 0, false),
#endif
};
#define NUM_USB_DRIVERS (sizeof(drivers) / sizeof(usb_driver_config_t))
/* ---------------------------------------------------------
* USB driver functions
* ---------------------------------------------------------
*/
#define USB_EVENT_QUEUE_SIZE 16
usbevent_t event_queue[USB_EVENT_QUEUE_SIZE];
uint8_t event_queue_head;
uint8_t event_queue_tail;
void usb_event_queue_init(void) {
// Initialise the event queue
memset(&event_queue, 0, sizeof(event_queue));
event_queue_head = 0;
event_queue_tail = 0;
}
static inline bool usb_event_queue_enqueue(usbevent_t event) {
uint8_t next = (event_queue_head + 1) % USB_EVENT_QUEUE_SIZE;
if (next == event_queue_tail) {
return false;
}
event_queue[event_queue_head] = event;
event_queue_head = next;
return true;
}
static inline bool usb_event_queue_dequeue(usbevent_t *event) {
if (event_queue_head == event_queue_tail) {
return false;
}
*event = event_queue[event_queue_tail];
event_queue_tail = (event_queue_tail + 1) % USB_EVENT_QUEUE_SIZE;
return true;
}
static inline void usb_event_suspend_handler(void) {
#ifdef SLEEP_LED_ENABLE
sleep_led_enable();
#endif /* SLEEP_LED_ENABLE */
}
static inline void usb_event_wakeup_handler(void) {
suspend_wakeup_init();
#ifdef SLEEP_LED_ENABLE
sleep_led_disable();
// NOTE: converters may not accept this
led_set(host_keyboard_leds());
#endif /* SLEEP_LED_ENABLE */
}
bool last_suspend_state = false;
void usb_event_queue_task(void) {
usbevent_t event;
while (usb_event_queue_dequeue(&event)) {
switch (event) {
case USB_EVENT_SUSPEND:
last_suspend_state = true;
usb_event_suspend_handler();
break;
case USB_EVENT_WAKEUP:
last_suspend_state = false;
usb_event_wakeup_handler();
break;
default:
// Nothing to do, we don't handle it.
break;
}
}
}
/* Handles the USB driver global events
* TODO: maybe disable some things when connection is lost? */
static void usb_event_cb(USBDriver *usbp, usbevent_t event) {
switch (event) {
case USB_EVENT_ADDRESS:
return;
case USB_EVENT_CONFIGURED:
osalSysLockFromISR();
/* Enable the endpoints specified into the configuration. */
#ifndef KEYBOARD_SHARED_EP
usbInitEndpointI(usbp, KEYBOARD_IN_EPNUM, &kbd_ep_config);
#endif
#if defined(MOUSE_ENABLE) && !defined(MOUSE_SHARED_EP)
usbInitEndpointI(usbp, MOUSE_IN_EPNUM, &mouse_ep_config);
#endif
#ifdef SHARED_EP_ENABLE
usbInitEndpointI(usbp, SHARED_IN_EPNUM, &shared_ep_config);
#endif
for (int i = 0; i < NUM_USB_DRIVERS; i++) {
#if STM32_USB_USE_OTG1
usbInitEndpointI(usbp, drivers.array[i].config.bulk_in, &drivers.array[i].inout_ep_config);
#else
usbInitEndpointI(usbp, drivers.array[i].config.bulk_in, &drivers.array[i].in_ep_config);
usbInitEndpointI(usbp, drivers.array[i].config.bulk_out, &drivers.array[i].out_ep_config);
#endif
if (drivers.array[i].config.int_in) {
usbInitEndpointI(usbp, drivers.array[i].config.int_in, &drivers.array[i].int_ep_config);
}
qmkusbConfigureHookI(&drivers.array[i].driver);
}
osalSysUnlockFromISR();
if (last_suspend_state) {
usb_event_queue_enqueue(USB_EVENT_WAKEUP);
}
return;
case USB_EVENT_SUSPEND:
usb_event_queue_enqueue(USB_EVENT_SUSPEND);
/* Falls into.*/
case USB_EVENT_UNCONFIGURED:
/* Falls into.*/
case USB_EVENT_RESET:
for (int i = 0; i < NUM_USB_DRIVERS; i++) {
chSysLockFromISR();
/* Disconnection event on suspend.*/
qmkusbSuspendHookI(&drivers.array[i].driver);
chSysUnlockFromISR();
}
return;
case USB_EVENT_WAKEUP:
// TODO: from ISR! print("[W]");
for (int i = 0; i < NUM_USB_DRIVERS; i++) {
chSysLockFromISR();
/* Disconnection event on suspend.*/
qmkusbWakeupHookI(&drivers.array[i].driver);
chSysUnlockFromISR();
}
usb_event_queue_enqueue(USB_EVENT_WAKEUP);
return;
case USB_EVENT_STALLED:
return;
}
}
/* Function used locally in os/hal/src/usb.c for getting descriptors
* need it here for HID descriptor */
static uint16_t get_hword(uint8_t *p) {
uint16_t hw;
hw = (uint16_t)*p++;
hw |= (uint16_t)*p << 8U;
return hw;
}
/*
* Appendix G: HID Request Support Requirements
*
* The following table enumerates the requests that need to be supported by various types of HID class devices.
* Device type GetReport SetReport GetIdle SetIdle GetProtocol SetProtocol
* ------------------------------------------------------------------------------------------
* Boot Mouse Required Optional Optional Optional Required Required
* Non-Boot Mouse Required Optional Optional Optional Optional Optional
* Boot Keyboard Required Optional Required Required Required Required
* Non-Boot Keybrd Required Optional Required Required Optional Optional
* Other Device Required Optional Optional Optional Optional Optional
*/
static uint8_t set_report_buf[2] __attribute__((aligned(4)));
static void set_led_transfer_cb(USBDriver *usbp) {
if (usbp->setup[6] == 2) { /* LSB(wLength) */
uint8_t report_id = set_report_buf[0];
if ((report_id == REPORT_ID_KEYBOARD) || (report_id == REPORT_ID_NKRO)) {
keyboard_led_state = set_report_buf[1];
}
} else {
keyboard_led_state = set_report_buf[0];
}
}
/* Callback for SETUP request on the endpoint 0 (control) */
static bool usb_request_hook_cb(USBDriver *usbp) {
const USBDescriptor *dp;
/* usbp->setup fields:
* 0: bmRequestType (bitmask)
* 1: bRequest
* 2,3: (LSB,MSB) wValue
* 4,5: (LSB,MSB) wIndex
* 6,7: (LSB,MSB) wLength (number of bytes to transfer if there is a data phase) */
/* Handle HID class specific requests */
if (((usbp->setup[0] & USB_RTYPE_TYPE_MASK) == USB_RTYPE_TYPE_CLASS) && ((usbp->setup[0] & USB_RTYPE_RECIPIENT_MASK) == USB_RTYPE_RECIPIENT_INTERFACE)) {
switch (usbp->setup[0] & USB_RTYPE_DIR_MASK) {
case USB_RTYPE_DIR_DEV2HOST:
switch (usbp->setup[1]) { /* bRequest */
case HID_GET_REPORT:
switch (usbp->setup[4]) { /* LSB(wIndex) (check MSB==0?) */
case KEYBOARD_INTERFACE:
usbSetupTransfer(usbp, (uint8_t *)&keyboard_report_sent, sizeof(keyboard_report_sent), NULL);
return TRUE;
break;
#if defined(MOUSE_ENABLE) && !defined(MOUSE_SHARED_EP)
case MOUSE_INTERFACE:
usbSetupTransfer(usbp, (uint8_t *)&mouse_report_blank, sizeof(mouse_report_blank), NULL);
return TRUE;
break;
#endif
default:
usbSetupTransfer(usbp, NULL, 0, NULL);
return TRUE;
break;
}
break;
case HID_GET_PROTOCOL:
if ((usbp->setup[4] == KEYBOARD_INTERFACE) && (usbp->setup[5] == 0)) { /* wIndex */
usbSetupTransfer(usbp, &keyboard_protocol, 1, NULL);
return TRUE;
}
break;
case HID_GET_IDLE:
usbSetupTransfer(usbp, &keyboard_idle, 1, NULL);
return TRUE;
break;
}
break;
case USB_RTYPE_DIR_HOST2DEV:
switch (usbp->setup[1]) { /* bRequest */
case HID_SET_REPORT:
switch (usbp->setup[4]) { /* LSB(wIndex) (check MSB==0?) */
case KEYBOARD_INTERFACE:
#if defined(SHARED_EP_ENABLE) && !defined(KEYBOARD_SHARED_EP)
case SHARED_INTERFACE:
#endif
usbSetupTransfer(usbp, set_report_buf, sizeof(set_report_buf), set_led_transfer_cb);
return TRUE;
break;
}
break;
case HID_SET_PROTOCOL:
if ((usbp->setup[4] == KEYBOARD_INTERFACE) && (usbp->setup[5] == 0)) { /* wIndex */
keyboard_protocol = ((usbp->setup[2]) != 0x00); /* LSB(wValue) */
#ifdef NKRO_ENABLE
keymap_config.nkro = !!keyboard_protocol;
if (!keymap_config.nkro && keyboard_idle) {
#else /* NKRO_ENABLE */
if (keyboard_idle) {
#endif /* NKRO_ENABLE */
/* arm the idle timer if boot protocol & idle */
osalSysLockFromISR();
chVTSetI(&keyboard_idle_timer, 4 * TIME_MS2I(keyboard_idle), keyboard_idle_timer_cb, (void *)usbp);
osalSysUnlockFromISR();
}
}
usbSetupTransfer(usbp, NULL, 0, NULL);
return TRUE;
break;
case HID_SET_IDLE:
keyboard_idle = usbp->setup[3]; /* MSB(wValue) */
/* arm the timer */
#ifdef NKRO_ENABLE
if (!keymap_config.nkro && keyboard_idle) {
#else /* NKRO_ENABLE */
if (keyboard_idle) {
#endif /* NKRO_ENABLE */
osalSysLockFromISR();
chVTSetI(&keyboard_idle_timer, 4 * TIME_MS2I(keyboard_idle), keyboard_idle_timer_cb, (void *)usbp);
osalSysUnlockFromISR();
}
usbSetupTransfer(usbp, NULL, 0, NULL);
return TRUE;
break;
}
break;
}
}
/* Handle the Get_Descriptor Request for HID class (not handled by the default hook) */
if ((usbp->setup[0] == 0x81) && (usbp->setup[1] == USB_REQ_GET_DESCRIPTOR)) {
dp = usbp->config->get_descriptor_cb(usbp, usbp->setup[3], usbp->setup[2], get_hword(&usbp->setup[4]));
if (dp == NULL) return FALSE;
usbSetupTransfer(usbp, (uint8_t *)dp->ud_string, dp->ud_size, NULL);
return TRUE;
}
for (int i = 0; i < NUM_USB_DRIVERS; i++) {
if (drivers.array[i].config.int_in) {
// NOTE: Assumes that we only have one serial driver
return qmkusbRequestsHook(usbp);
}
}
return FALSE;
}
/* Start-of-frame callback */
static void usb_sof_cb(USBDriver *usbp) {
kbd_sof_cb(usbp);
osalSysLockFromISR();
for (int i = 0; i < NUM_USB_DRIVERS; i++) {
qmkusbSOFHookI(&drivers.array[i].driver);
}
osalSysUnlockFromISR();
}
/* USB driver configuration */
static const USBConfig usbcfg = {
usb_event_cb, /* USB events callback */
usb_get_descriptor_cb, /* Device GET_DESCRIPTOR request callback */
usb_request_hook_cb, /* Requests hook callback */
usb_sof_cb /* Start Of Frame callback */
};
/*
* Initialize the USB driver
*/
void init_usb_driver(USBDriver *usbp) {
for (int i = 0; i < NUM_USB_DRIVERS; i++) {
#if STM32_USB_USE_OTG1
QMKUSBDriver *driver = &drivers.array[i].driver;
drivers.array[i].inout_ep_config.in_state = &drivers.array[i].in_ep_state;
drivers.array[i].inout_ep_config.out_state = &drivers.array[i].out_ep_state;
drivers.array[i].int_ep_config.in_state = &drivers.array[i].int_ep_state;
qmkusbObjectInit(driver, &drivers.array[i].config);
qmkusbStart(driver, &drivers.array[i].config);
#else
QMKUSBDriver *driver = &drivers.array[i].driver;
drivers.array[i].in_ep_config.in_state = &drivers.array[i].in_ep_state;
drivers.array[i].out_ep_config.out_state = &drivers.array[i].out_ep_state;
drivers.array[i].int_ep_config.in_state = &drivers.array[i].int_ep_state;
qmkusbObjectInit(driver, &drivers.array[i].config);
qmkusbStart(driver, &drivers.array[i].config);
#endif
}
/*
* Activates the USB driver and then the USB bus pull-up on D+.
* Note, a delay is inserted in order to not have to disconnect the cable
* after a reset.
*/
usbDisconnectBus(usbp);
wait_ms(1500);
usbStart(usbp, &usbcfg);
usbConnectBus(usbp);
chVTObjectInit(&keyboard_idle_timer);
}
__attribute__((weak)) void restart_usb_driver(USBDriver *usbp) {
usbStop(usbp);
usbDisconnectBus(usbp);
#if USB_SUSPEND_WAKEUP_DELAY > 0
// Some hubs, kvm switches, and monitors do
// weird things, with USB device state bouncing
// around wildly on wakeup, yielding race
// conditions that can corrupt the keyboard state.
//
// Pause for a while to let things settle...
wait_ms(USB_SUSPEND_WAKEUP_DELAY);
#endif
usbStart(usbp, &usbcfg);
usbConnectBus(usbp);
}
/* ---------------------------------------------------------
* Keyboard functions
* ---------------------------------------------------------
*/
/* keyboard IN callback hander (a kbd report has made it IN) */
#ifndef KEYBOARD_SHARED_EP
void kbd_in_cb(USBDriver *usbp, usbep_t ep) {
/* STUB */
(void)usbp;
(void)ep;
}
#endif
/* start-of-frame handler
* TODO: i guess it would be better to re-implement using timers,
* so that this is not going to have to be checked every 1ms */
void kbd_sof_cb(USBDriver *usbp) { (void)usbp; }
/* Idle requests timer code
* callback (called from ISR, unlocked state) */
static void keyboard_idle_timer_cb(void *arg) {
USBDriver *usbp = (USBDriver *)arg;
osalSysLockFromISR();
/* check that the states of things are as they're supposed to */
if (usbGetDriverStateI(usbp) != USB_ACTIVE) {
/* do not rearm the timer, should be enabled on IDLE request */
osalSysUnlockFromISR();
return;
}
#ifdef NKRO_ENABLE
if (!keymap_config.nkro && keyboard_idle && keyboard_protocol) {
#else /* NKRO_ENABLE */
if (keyboard_idle && keyboard_protocol) {
#endif /* NKRO_ENABLE */
/* TODO: are we sure we want the KBD_ENDPOINT? */
if (!usbGetTransmitStatusI(usbp, KEYBOARD_IN_EPNUM)) {
usbStartTransmitI(usbp, KEYBOARD_IN_EPNUM, (uint8_t *)&keyboard_report_sent, KEYBOARD_EPSIZE);
}
/* rearm the timer */
chVTSetI(&keyboard_idle_timer, 4 * TIME_MS2I(keyboard_idle), keyboard_idle_timer_cb, (void *)usbp);
}
/* do not rearm the timer if the condition above fails
* it should be enabled again on either IDLE or SET_PROTOCOL requests */
osalSysUnlockFromISR();
}
/* LED status */
uint8_t keyboard_leds(void) { return keyboard_led_state; }
/* prepare and start sending a report IN
* not callable from ISR or locked state */
void send_keyboard(report_keyboard_t *report) {
osalSysLock();
if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
goto unlock;
}
#ifdef NKRO_ENABLE
if (keymap_config.nkro && keyboard_protocol) { /* NKRO protocol */
/* need to wait until the previous packet has made it through */
/* can rewrite this using the synchronous API, then would wait
* until *after* the packet has been transmitted. I think
* this is more efficient */
/* busy wait, should be short and not very common */
if (usbGetTransmitStatusI(&USB_DRIVER, SHARED_IN_EPNUM)) {
/* Need to either suspend, or loop and call unlock/lock during
* every iteration - otherwise the system will remain locked,
* no interrupts served, so USB not going through as well.
* Note: for suspend, need USB_USE_WAIT == TRUE in halconf.h */
osalThreadSuspendS(&(&USB_DRIVER)->epc[SHARED_IN_EPNUM]->in_state->thread);
/* after osalThreadSuspendS returns USB status might have changed */
if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
goto unlock;
}
}
usbStartTransmitI(&USB_DRIVER, SHARED_IN_EPNUM, (uint8_t *)report, sizeof(struct nkro_report));
} else
#endif /* NKRO_ENABLE */
{ /* regular protocol */
/* need to wait until the previous packet has made it through */
/* busy wait, should be short and not very common */
if (usbGetTransmitStatusI(&USB_DRIVER, KEYBOARD_IN_EPNUM)) {
/* Need to either suspend, or loop and call unlock/lock during
* every iteration - otherwise the system will remain locked,
* no interrupts served, so USB not going through as well.
* Note: for suspend, need USB_USE_WAIT == TRUE in halconf.h */
osalThreadSuspendS(&(&USB_DRIVER)->epc[KEYBOARD_IN_EPNUM]->in_state->thread);
/* after osalThreadSuspendS returns USB status might have changed */
if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
goto unlock;
}
}
uint8_t *data, size;
if (keyboard_protocol) {
data = (uint8_t *)report;
size = KEYBOARD_REPORT_SIZE;
} else { /* boot protocol */
data = &report->mods;
size = 8;
}
usbStartTransmitI(&USB_DRIVER, KEYBOARD_IN_EPNUM, data, size);
}
keyboard_report_sent = *report;
unlock:
osalSysUnlock();
}
/* ---------------------------------------------------------
* Mouse functions
* ---------------------------------------------------------
*/
#ifdef MOUSE_ENABLE
# ifndef MOUSE_SHARED_EP
/* mouse IN callback hander (a mouse report has made it IN) */
void mouse_in_cb(USBDriver *usbp, usbep_t ep) {
(void)usbp;
(void)ep;
}
# endif
void send_mouse(report_mouse_t *report) {
osalSysLock();
if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
osalSysUnlock();
return;
}
if (usbGetTransmitStatusI(&USB_DRIVER, MOUSE_IN_EPNUM)) {
/* Need to either suspend, or loop and call unlock/lock during
* every iteration - otherwise the system will remain locked,
* no interrupts served, so USB not going through as well.
* Note: for suspend, need USB_USE_WAIT == TRUE in halconf.h */
if (osalThreadSuspendTimeoutS(&(&USB_DRIVER)->epc[MOUSE_IN_EPNUM]->in_state->thread, TIME_MS2I(10)) == MSG_TIMEOUT) {
osalSysUnlock();
return;
}
}
usbStartTransmitI(&USB_DRIVER, MOUSE_IN_EPNUM, (uint8_t *)report, sizeof(report_mouse_t));
osalSysUnlock();
}
#else /* MOUSE_ENABLE */
void send_mouse(report_mouse_t *report) { (void)report; }
#endif /* MOUSE_ENABLE */
/* ---------------------------------------------------------
* Shared EP functions
* ---------------------------------------------------------
*/
#ifdef SHARED_EP_ENABLE
/* shared IN callback hander */
void shared_in_cb(USBDriver *usbp, usbep_t ep) {
/* STUB */
(void)usbp;
(void)ep;
}
#endif
/* ---------------------------------------------------------
* Extrakey functions
* ---------------------------------------------------------
*/
#ifdef EXTRAKEY_ENABLE
static void send_extra(uint8_t report_id, uint16_t data) {
osalSysLock();
if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
osalSysUnlock();
return;
}
if (usbGetTransmitStatusI(&USB_DRIVER, SHARED_IN_EPNUM)) {
/* Need to either suspend, or loop and call unlock/lock during
* every iteration - otherwise the system will remain locked,
* no interrupts served, so USB not going through as well.
* Note: for suspend, need USB_USE_WAIT == TRUE in halconf.h */
if (osalThreadSuspendTimeoutS(&(&USB_DRIVER)->epc[SHARED_IN_EPNUM]->in_state->thread, TIME_MS2I(10)) == MSG_TIMEOUT) {
osalSysUnlock();
return;
}
}
static report_extra_t report;
report = (report_extra_t){.report_id = report_id, .usage = data};
usbStartTransmitI(&USB_DRIVER, SHARED_IN_EPNUM, (uint8_t *)&report, sizeof(report_extra_t));
osalSysUnlock();
}
#endif
void send_system(uint16_t data) {
#ifdef EXTRAKEY_ENABLE
send_extra(REPORT_ID_SYSTEM, data);
#endif
}
void send_consumer(uint16_t data) {
#ifdef EXTRAKEY_ENABLE
send_extra(REPORT_ID_CONSUMER, data);
#endif
}
void send_digitizer(report_digitizer_t *report) {
#ifdef DIGITIZER_ENABLE
# ifdef DIGITIZER_SHARED_EP
osalSysLock();
if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
osalSysUnlock();
return;
}
usbStartTransmitI(&USB_DRIVER, DIGITIZER_IN_EPNUM, (uint8_t *)report, sizeof(report_digitizer_t));
osalSysUnlock();
# else
chnWrite(&drivers.digitizer_driver.driver, (uint8_t *)report, sizeof(report_digitizer_t));
# endif
#endif
}
/* ---------------------------------------------------------
* Console functions
* ---------------------------------------------------------
*/
#ifdef CONSOLE_ENABLE
int8_t sendchar(uint8_t c) {
static bool timed_out = false;
/* The `timed_out` state is an approximation of the ideal `is_listener_disconnected?` state.
*
* When a 5ms timeout write has timed out, hid_listen is most likely not running, or not
* listening to this keyboard, so we go into the timed_out state. In this state we assume
* that hid_listen is most likely not gonna be connected to us any time soon, so it would
* be wasteful to write follow-up characters with a 5ms timeout, it would all add up and
* unncecessarily slow down the firmware. However instead of just dropping the characters,
* we write them with a TIME_IMMEDIATE timeout, which is a zero timeout,
* and this will succeed only if hid_listen gets connected again. When a write with
* TIME_IMMEDIATE timeout succeeds, we know that hid_listen is listening to us again, and
* we can go back to the timed_out = false state, and following writes will be executed
* with a 5ms timeout. The reason we don't just send all characters with the TIME_IMMEDIATE
* timeout is that this could cause bytes to be lost even if hid_listen is running, if there
* is a lot of data being sent over the console.
*
* This logic will work correctly as long as hid_listen is able to receive at least 200
* bytes per second. On a heavily overloaded machine that's so overloaded that it's
* unusable, and constantly swapping, hid_listen might have trouble receiving 200 bytes per
* second, so some bytes might be lost on the console.
*/
const sysinterval_t timeout = timed_out ? TIME_IMMEDIATE : TIME_MS2I(5);
const size_t result = chnWriteTimeout(&drivers.console_driver.driver, &c, 1, timeout);
timed_out = (result == 0);
return result;
}
// Just a dummy function for now, this could be exposed as a weak function
// Or connected to the actual QMK console
static void console_receive(uint8_t *data, uint8_t length) {
(void)data;
(void)length;
}
void console_task(void) {
uint8_t buffer[CONSOLE_EPSIZE];
size_t size = 0;
do {
size_t size = chnReadTimeout(&drivers.console_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
if (size > 0) {
console_receive(buffer, size);
}
} while (size > 0);
}
#endif /* CONSOLE_ENABLE */
#ifdef RAW_ENABLE
void raw_hid_send(uint8_t *data, uint8_t length) {
// TODO: implement variable size packet
if (length != RAW_EPSIZE) {
return;
}
chnWrite(&drivers.raw_driver.driver, data, length);
}
__attribute__((weak)) void raw_hid_receive(uint8_t *data, uint8_t length) {
// Users should #include "raw_hid.h" in their own code
// and implement this function there. Leave this as weak linkage
// so users can opt to not handle data coming in.
}
void raw_hid_task(void) {
uint8_t buffer[RAW_EPSIZE];
size_t size = 0;
do {
size_t size = chnReadTimeout(&drivers.raw_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
if (size > 0) {
raw_hid_receive(buffer, size);
}
} while (size > 0);
}
#endif
#ifdef MIDI_ENABLE
void send_midi_packet(MIDI_EventPacket_t *event) { chnWrite(&drivers.midi_driver.driver, (uint8_t *)event, sizeof(MIDI_EventPacket_t)); }
bool recv_midi_packet(MIDI_EventPacket_t *const event) {
size_t size = chnReadTimeout(&drivers.midi_driver.driver, (uint8_t *)event, sizeof(MIDI_EventPacket_t), TIME_IMMEDIATE);
return size == sizeof(MIDI_EventPacket_t);
}
void midi_ep_task(void) {
uint8_t buffer[MIDI_STREAM_EPSIZE];
size_t size = 0;
do {
size_t size = chnReadTimeout(&drivers.midi_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
if (size > 0) {
MIDI_EventPacket_t event;
recv_midi_packet(&event);
}
} while (size > 0);
}
#endif
#ifdef VIRTSER_ENABLE
void virtser_send(const uint8_t byte) { chnWrite(&drivers.serial_driver.driver, &byte, 1); }
__attribute__((weak)) void virtser_recv(uint8_t c) {
// Ignore by default
}
void virtser_task(void) {
uint8_t numBytesReceived = 0;
uint8_t buffer[16];
do {
numBytesReceived = chnReadTimeout(&drivers.serial_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
for (int i = 0; i < numBytesReceived; i++) {
virtser_recv(buffer[i]);
}
} while (numBytesReceived > 0);
}
#endif
#ifdef JOYSTICK_ENABLE
void send_joystick_packet(joystick_t *joystick) {
static joystick_report_t rep;
rep = (joystick_report_t) {
# if JOYSTICK_AXES_COUNT > 0
.axes =
{ joystick->axes[0],
# if JOYSTICK_AXES_COUNT >= 2
joystick->axes[1],
# endif
# if JOYSTICK_AXES_COUNT >= 3
joystick->axes[2],
# endif
# if JOYSTICK_AXES_COUNT >= 4
joystick->axes[3],
# endif
# if JOYSTICK_AXES_COUNT >= 5
joystick->axes[4],
# endif
# if JOYSTICK_AXES_COUNT >= 6
joystick->axes[5],
# endif
},
# endif // JOYSTICK_AXES_COUNT>0
# if JOYSTICK_BUTTON_COUNT > 0
.buttons = {
joystick->buttons[0],
# if JOYSTICK_BUTTON_COUNT > 8
joystick->buttons[1],
# endif
# if JOYSTICK_BUTTON_COUNT > 16
joystick->buttons[2],
# endif
# if JOYSTICK_BUTTON_COUNT > 24
joystick->buttons[3],
# endif
}
# endif // JOYSTICK_BUTTON_COUNT>0
};
// chnWrite(&drivers.joystick_driver.driver, (uint8_t *)&rep, sizeof(rep));
osalSysLock();
if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
osalSysUnlock();
return;
}
usbStartTransmitI(&USB_DRIVER, JOYSTICK_IN_EPNUM, (uint8_t *)&rep, sizeof(joystick_report_t));
osalSysUnlock();
}
#endif