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qmk_firmware/tmk_core/protocol/vusb/vusb.c

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/*
Copyright 2011 Jun Wako <wakojun@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/eeprom.h>
#include <avr/wdt.h>
#include <stdint.h>
#include "usbdrv.h"
#include "usbconfig.h"
#include "host.h"
#include "report.h"
#include "print.h"
#include "debug.h"
#include "host_driver.h"
#include "vusb.h"
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#include <util/delay.h>
static uint8_t vusb_keyboard_leds = 0;
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static uint8_t vusb_idle_rate = 0;
/* Keyboard report send buffer */
#define KBUF_SIZE 16
static report_keyboard_t kbuf[KBUF_SIZE];
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static uint8_t kbuf_head = 0;
static uint8_t kbuf_tail = 0;
typedef struct {
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uint8_t modifier;
uint8_t reserved;
uint8_t keycode[6];
} keyboard_report_t;
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static keyboard_report_t keyboard_report; // sent to PC
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#define VUSB_TRANSFER_KEYBOARD_MAX_TRIES 10
/* transfer keyboard report from buffer */
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void vusb_transfer_keyboard(void) {
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for (int i = 0; i < VUSB_TRANSFER_KEYBOARD_MAX_TRIES; i++) {
if (usbInterruptIsReady()) {
if (kbuf_head != kbuf_tail) {
usbSetInterrupt((void *)&kbuf[kbuf_tail], sizeof(report_keyboard_t));
kbuf_tail = (kbuf_tail + 1) % KBUF_SIZE;
if (debug_keyboard) {
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print("V-USB: kbuf[");
pdec(kbuf_tail);
print("->");
pdec(kbuf_head);
print("](");
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phex((kbuf_head < kbuf_tail) ? (KBUF_SIZE - kbuf_tail + kbuf_head) : (kbuf_head - kbuf_tail));
print(")\n");
}
}
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break;
}
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usbPoll();
_delay_ms(1);
}
}
/*------------------------------------------------------------------*
* Host driver
*------------------------------------------------------------------*/
static uint8_t keyboard_leds(void);
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static void send_keyboard(report_keyboard_t *report);
static void send_mouse(report_mouse_t *report);
static void send_system(uint16_t data);
static void send_consumer(uint16_t data);
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static host_driver_t driver = {keyboard_leds, send_keyboard, send_mouse, send_system, send_consumer};
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host_driver_t *vusb_driver(void) { return &driver; }
static uint8_t keyboard_leds(void) { return vusb_keyboard_leds; }
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static void send_keyboard(report_keyboard_t *report) {
uint8_t next = (kbuf_head + 1) % KBUF_SIZE;
if (next != kbuf_tail) {
kbuf[kbuf_head] = *report;
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kbuf_head = next;
} else {
debug("kbuf: full\n");
}
// NOTE: send key strokes of Macro
usbPoll();
vusb_transfer_keyboard();
}
typedef struct {
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uint8_t report_id;
report_mouse_t report;
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} __attribute__((packed)) vusb_mouse_report_t;
static void send_mouse(report_mouse_t *report) {
vusb_mouse_report_t r = {.report_id = REPORT_ID_MOUSE, .report = *report};
if (usbInterruptIsReady3()) {
usbSetInterrupt3((void *)&r, sizeof(vusb_mouse_report_t));
}
}
static void send_extra(uint8_t report_id, uint16_t data) {
static uint8_t last_id = 0;
static uint16_t last_data = 0;
if ((report_id == last_id) && (data == last_data)) return;
last_id = report_id;
last_data = data;
report_extra_t report = {.report_id = report_id, .usage = data};
if (usbInterruptIsReady3()) {
usbSetInterrupt3((void *)&report, sizeof(report));
}
}
static void send_system(uint16_t data) {
send_extra(REPORT_ID_SYSTEM, data);
}
static void send_consumer(uint16_t data) {
send_extra(REPORT_ID_CONSUMER, data);
}
/*------------------------------------------------------------------*
* Request from host *
*------------------------------------------------------------------*/
static struct {
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uint16_t len;
enum { NONE, SET_LED } kind;
} last_req;
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usbMsgLen_t usbFunctionSetup(uchar data[8]) {
usbRequest_t *rq = (void *)data;
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if ((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS) { /* class request type */
if (rq->bRequest == USBRQ_HID_GET_REPORT) {
debug("GET_REPORT:");
/* we only have one report type, so don't look at wValue */
usbMsgPtr = (void *)&keyboard_report;
return sizeof(keyboard_report);
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} else if (rq->bRequest == USBRQ_HID_GET_IDLE) {
debug("GET_IDLE: ");
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// debug_hex(vusb_idle_rate);
usbMsgPtr = &vusb_idle_rate;
return 1;
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} else if (rq->bRequest == USBRQ_HID_SET_IDLE) {
vusb_idle_rate = rq->wValue.bytes[1];
debug("SET_IDLE: ");
debug_hex(vusb_idle_rate);
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} else if (rq->bRequest == USBRQ_HID_SET_REPORT) {
debug("SET_REPORT: ");
// Report Type: 0x02(Out)/ReportID: 0x00(none) && Interface: 0(keyboard)
if (rq->wValue.word == 0x0200 && rq->wIndex.word == 0) {
debug("SET_LED: ");
last_req.kind = SET_LED;
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last_req.len = rq->wLength.word;
}
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return USB_NO_MSG; // to get data in usbFunctionWrite
} else {
debug("UNKNOWN:");
}
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} else {
debug("VENDOR:");
/* no vendor specific requests implemented */
}
debug("\n");
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return 0; /* default for not implemented requests: return no data back to host */
}
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uchar usbFunctionWrite(uchar *data, uchar len) {
if (last_req.len == 0) {
return -1;
}
switch (last_req.kind) {
case SET_LED:
debug("SET_LED: ");
debug_hex(data[0]);
debug("\n");
vusb_keyboard_leds = data[0];
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last_req.len = 0;
return 1;
break;
case NONE:
default:
return -1;
break;
}
return 1;
}
/*------------------------------------------------------------------*
* Descriptors *
*------------------------------------------------------------------*/
/*
* Report Descriptor for keyboard
*
* from an example in HID spec appendix
*/
const PROGMEM uchar keyboard_hid_report[] = {
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0x05, 0x01, // Usage Page (Generic Desktop),
0x09, 0x06, // Usage (Keyboard),
0xA1, 0x01, // Collection (Application),
0x75, 0x01, // Report Size (1),
0x95, 0x08, // Report Count (8),
0x05, 0x07, // Usage Page (Key Codes),
0x19, 0xE0, // Usage Minimum (224),
0x29, 0xE7, // Usage Maximum (231),
0x15, 0x00, // Logical Minimum (0),
0x25, 0x01, // Logical Maximum (1),
0x81, 0x02, // Input (Data, Variable, Absolute), ;Modifier byte
0x95, 0x01, // Report Count (1),
0x75, 0x08, // Report Size (8),
0x81, 0x03, // Input (Constant), ;Reserved byte
0x95, 0x05, // Report Count (5),
0x75, 0x01, // Report Size (1),
0x05, 0x08, // Usage Page (LEDs),
0x19, 0x01, // Usage Minimum (1),
0x29, 0x05, // Usage Maximum (5),
0x91, 0x02, // Output (Data, Variable, Absolute), ;LED report
0x95, 0x01, // Report Count (1),
0x75, 0x03, // Report Size (3),
0x91, 0x03, // Output (Constant), ;LED report padding
0x95, 0x06, // Report Count (6),
0x75, 0x08, // Report Size (8),
0x15, 0x00, // Logical Minimum (0),
0x26, 0xFF, 0x00, // Logical Maximum(255),
0x05, 0x07, // Usage Page (Key Codes),
0x19, 0x00, // Usage Minimum (0),
0x29, 0xFF, // Usage Maximum (255),
0x81, 0x00, // Input (Data, Array),
0xc0 // End Collection
};
/*
* Report Descriptor for mouse
*
* Mouse Protocol 1, HID 1.11 spec, Appendix B, page 59-60, with wheel extension
* http://www.microchip.com/forums/tm.aspx?high=&m=391435&mpage=1#391521
* http://www.keil.com/forum/15671/
* http://www.microsoft.com/whdc/device/input/wheel.mspx
*/
const PROGMEM uchar mouse_hid_report[] = {
/* mouse */
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0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x02, // USAGE (Mouse)
0xa1, 0x01, // COLLECTION (Application)
0x85, REPORT_ID_MOUSE, // REPORT_ID (1)
0x09, 0x01, // USAGE (Pointer)
0xa1, 0x00, // COLLECTION (Physical)
// ---------------------------- Buttons
0x05, 0x09, // USAGE_PAGE (Button)
0x19, 0x01, // USAGE_MINIMUM (Button 1)
0x29, 0x05, // USAGE_MAXIMUM (Button 5)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x75, 0x01, // REPORT_SIZE (1)
0x95, 0x05, // REPORT_COUNT (5)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x75, 0x03, // REPORT_SIZE (3)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x03, // INPUT (Cnst,Var,Abs)
// ---------------------------- X,Y position
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x30, // USAGE (X)
0x09, 0x31, // USAGE (Y)
0x15, 0x81, // LOGICAL_MINIMUM (-127)
0x25, 0x7f, // LOGICAL_MAXIMUM (127)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x02, // REPORT_COUNT (2)
0x81, 0x06, // INPUT (Data,Var,Rel)
// ---------------------------- Vertical wheel
0x09, 0x38, // USAGE (Wheel)
0x15, 0x81, // LOGICAL_MINIMUM (-127)
0x25, 0x7f, // LOGICAL_MAXIMUM (127)
0x35, 0x00, // PHYSICAL_MINIMUM (0) - reset physical
0x45, 0x00, // PHYSICAL_MAXIMUM (0)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x06, // INPUT (Data,Var,Rel)
// ---------------------------- Horizontal wheel
0x05, 0x0c, // USAGE_PAGE (Consumer Devices)
0x0a, 0x38, 0x02, // USAGE (AC Pan)
0x15, 0x81, // LOGICAL_MINIMUM (-127)
0x25, 0x7f, // LOGICAL_MAXIMUM (127)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x06, // INPUT (Data,Var,Rel)
0xc0, // END_COLLECTION
0xc0, // END_COLLECTION
/* system control */
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0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x80, // USAGE (System Control)
0xa1, 0x01, // COLLECTION (Application)
0x85, REPORT_ID_SYSTEM, // REPORT_ID (2)
0x15, 0x01, // LOGICAL_MINIMUM (0x1)
0x26, 0xb7, 0x00, // LOGICAL_MAXIMUM (0xb7)
0x19, 0x01, // USAGE_MINIMUM (0x1)
0x29, 0xb7, // USAGE_MAXIMUM (0xb7)
0x75, 0x10, // REPORT_SIZE (16)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x00, // INPUT (Data,Array,Abs)
0xc0, // END_COLLECTION
/* consumer */
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0x05, 0x0c, // USAGE_PAGE (Consumer Devices)
0x09, 0x01, // USAGE (Consumer Control)
0xa1, 0x01, // COLLECTION (Application)
0x85, REPORT_ID_CONSUMER, // REPORT_ID (3)
0x15, 0x01, // LOGICAL_MINIMUM (0x1)
0x26, 0x9c, 0x02, // LOGICAL_MAXIMUM (0x29c)
0x19, 0x01, // USAGE_MINIMUM (0x1)
0x2a, 0x9c, 0x02, // USAGE_MAXIMUM (0x29c)
0x75, 0x10, // REPORT_SIZE (16)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x00, // INPUT (Data,Array,Abs)
0xc0, // END_COLLECTION
};
#ifndef USB_MAX_POWER_CONSUMPTION
# define USB_MAX_POWER_CONSUMPTION 500
#endif
// TODO: change this to 10ms to match LUFA
#ifndef USB_POLLING_INTERVAL_MS
# define USB_POLLING_INTERVAL_MS 1
#endif
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/*
* Descriptor for compite device: Keyboard + Mouse
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*
* contains: device, interface, HID and endpoint descriptors
*/
#if USB_CFG_DESCR_PROPS_CONFIGURATION
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const PROGMEM char usbDescriptorConfiguration[] = {
/* USB configuration descriptor */
9, /* sizeof(usbDescriptorConfiguration): length of descriptor in bytes */
USBDESCR_CONFIG, /* descriptor type */
9 + (9 + 9 + 7) + (9 + 9 + 7), 0,
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// 18 + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT3 + 9, 0,
/* total length of data returned (including inlined descriptors) */
2, /* number of interfaces in this configuration */
1, /* index of this configuration */
0, /* configuration name string index */
# if USB_CFG_IS_SELF_POWERED
(1 << 7) | USBATTR_SELFPOWER, /* attributes */
# else
(1 << 7), /* attributes */
# endif
USB_MAX_POWER_CONSUMPTION / 2, /* max USB current in 2mA units */
/*
* Keyboard interface
*/
/* Interface descriptor */
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9, /* sizeof(usbDescrInterface): length of descriptor in bytes */
USBDESCR_INTERFACE, /* descriptor type */
0, /* index of this interface */
0, /* alternate setting for this interface */
USB_CFG_HAVE_INTRIN_ENDPOINT, /* endpoints excl 0: number of endpoint descriptors to follow */
USB_CFG_INTERFACE_CLASS, USB_CFG_INTERFACE_SUBCLASS, USB_CFG_INTERFACE_PROTOCOL, 0, /* string index for interface */
/* HID descriptor */
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9, /* sizeof(usbDescrHID): length of descriptor in bytes */
USBDESCR_HID, /* descriptor type: HID */
0x01, 0x01, /* BCD representation of HID version */
0x00, /* target country code */
0x01, /* number of HID Report (or other HID class) Descriptor infos to follow */
0x22, /* descriptor type: report */
sizeof(keyboard_hid_report), 0, /* total length of report descriptor */
/* Endpoint descriptor */
# if USB_CFG_HAVE_INTRIN_ENDPOINT /* endpoint descriptor for endpoint 1 */
7, /* sizeof(usbDescrEndpoint) */
USBDESCR_ENDPOINT, /* descriptor type = endpoint */
(char)0x81, /* IN endpoint number 1 */
0x03, /* attrib: Interrupt endpoint */
8, 0, /* maximum packet size */
USB_POLLING_INTERVAL_MS, /* in ms */
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# endif
/*
* Mouse interface
*/
/* Interface descriptor */
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9, /* sizeof(usbDescrInterface): length of descriptor in bytes */
USBDESCR_INTERFACE, /* descriptor type */
1, /* index of this interface */
0, /* alternate setting for this interface */
USB_CFG_HAVE_INTRIN_ENDPOINT3, /* endpoints excl 0: number of endpoint descriptors to follow */
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0x03, /* CLASS: HID */
0, /* SUBCLASS: none */
0, /* PROTOCOL: none */
0, /* string index for interface */
/* HID descriptor */
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9, /* sizeof(usbDescrHID): length of descriptor in bytes */
USBDESCR_HID, /* descriptor type: HID */
0x01, 0x01, /* BCD representation of HID version */
0x00, /* target country code */
0x01, /* number of HID Report (or other HID class) Descriptor infos to follow */
0x22, /* descriptor type: report */
sizeof(mouse_hid_report), 0, /* total length of report descriptor */
# if USB_CFG_HAVE_INTRIN_ENDPOINT3 /* endpoint descriptor for endpoint 3 */
/* Endpoint descriptor */
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7, /* sizeof(usbDescrEndpoint) */
USBDESCR_ENDPOINT, /* descriptor type = endpoint */
(char)(0x80 | USB_CFG_EP3_NUMBER), /* IN endpoint number 3 */
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0x03, /* attrib: Interrupt endpoint */
8, 0, /* maximum packet size */
USB_POLLING_INTERVAL_MS, /* in ms */
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# endif
};
#endif
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USB_PUBLIC usbMsgLen_t usbFunctionDescriptor(struct usbRequest *rq) {
usbMsgLen_t len = 0;
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/*
debug("usbFunctionDescriptor: ");
debug_hex(rq->bmRequestType); debug(" ");
debug_hex(rq->bRequest); debug(" ");
debug_hex16(rq->wValue.word); debug(" ");
debug_hex16(rq->wIndex.word); debug(" ");
debug_hex16(rq->wLength.word); debug("\n");
*/
switch (rq->wValue.bytes[1]) {
#if USB_CFG_DESCR_PROPS_CONFIGURATION
case USBDESCR_CONFIG:
usbMsgPtr = (unsigned char *)usbDescriptorConfiguration;
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len = sizeof(usbDescriptorConfiguration);
break;
#endif
case USBDESCR_HID:
switch (rq->wValue.bytes[0]) {
case 0:
usbMsgPtr = (unsigned char *)(usbDescriptorConfiguration + 9 + 9);
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len = 9;
break;
case 1:
usbMsgPtr = (unsigned char *)(usbDescriptorConfiguration + 9 + (9 + 9 + 7) + 9);
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len = 9;
break;
}
break;
case USBDESCR_HID_REPORT:
/* interface index */
switch (rq->wIndex.word) {
case 0:
usbMsgPtr = (unsigned char *)keyboard_hid_report;
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len = sizeof(keyboard_hid_report);
break;
case 1:
usbMsgPtr = (unsigned char *)mouse_hid_report;
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len = sizeof(mouse_hid_report);
break;
}
break;
}
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// debug("desc len: "); debug_hex(len); debug("\n");
return len;
}