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qmk_firmware/usb.c

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add initial files from teensy's usb_keyboard_debug.
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/* USB Keyboard Plus Debug Channel Example for Teensy USB Development Board
* http://www.pjrc.com/teensy/usb_keyboard.html
* Copyright (c) 2009 PJRC.COM, LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
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#include <stdint.h>
#include <stdbool.h>
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#include <avr/io.h>
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#include <avr/pgmspace.h>
#include <avr/interrupt.h>
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#include "usb.h"
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#include "usb_keyboard.h"
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#include "usb_mouse.h"
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#include "usb_debug.h"
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#include "usb_extra.h"
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#include "print.h"
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#include "util.h"
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/**************************************************************************
*
* Configurable Options
*
**************************************************************************/
// You can change these to give your code its own name.
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#ifndef MANUFACTURER
# define STR_MANUFACTURER L"t.m.k."
#else
# define STR_MANUFACTURER LSTR(MANUFACTURER)
#endif
#ifndef PRODUCT
# define STR_PRODUCT L"t.m.k. keyboard"
#else
# define STR_PRODUCT LSTR(PRODUCT)
#endif
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// Mac OS-X and Linux automatically load the correct drivers. On
// Windows, even though the driver is supplied by Microsoft, an
// INF file is needed to load the driver. These numbers need to
// match the INF file.
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#ifndef VENDOR_ID
# define VENDOR_ID 0xFEED
#endif
#ifndef PRODUCT_ID
# define PRODUCT_ID 0xBABE
#endif
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// USB devices are supposed to implment a halt feature, which is
// rarely (if ever) used. If you comment this line out, the halt
// code will be removed, saving 102 bytes of space (gcc 4.3.0).
// This is not strictly USB compliant, but works with all major
// operating systems.
#define SUPPORT_ENDPOINT_HALT
/**************************************************************************
*
* Endpoint Buffer Configuration
*
**************************************************************************/
#define ENDPOINT0_SIZE 32
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bool remote_wakeup = false;
bool suspend = false;
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// 0:control endpoint is enabled automatically by controller.
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static const uint8_t PROGMEM endpoint_config_table[] = {
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// enable, UECFG0X(type, direction), UECFG1X(size, bank, allocation)
1, EP_TYPE_INTERRUPT_IN, EP_SIZE(KEYBOARD_SIZE) | KEYBOARD_BUFFER, // 1
1, EP_TYPE_INTERRUPT_IN, EP_SIZE(MOUSE_SIZE) | MOUSE_BUFFER, // 2
1, EP_TYPE_INTERRUPT_IN, EP_SIZE(DEBUG_TX_SIZE) | DEBUG_TX_BUFFER, // 3
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1, EP_TYPE_INTERRUPT_IN, EP_SIZE(EXTRA_SIZE) | EXTRA_BUFFER, // 4
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0, // 5
0, // 6
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};
/**************************************************************************
*
* Descriptor Data
*
**************************************************************************/
// Descriptors are the data that your computer reads when it auto-detects
// this USB device (called "enumeration" in USB lingo). The most commonly
// changed items are editable at the top of this file. Changing things
// in here should only be done by those who've read chapter 9 of the USB
// spec and relevant portions of any USB class specifications!
static uint8_t PROGMEM device_descriptor[] = {
18, // bLength
1, // bDescriptorType
0x00, 0x02, // bcdUSB
0, // bDeviceClass
0, // bDeviceSubClass
0, // bDeviceProtocol
ENDPOINT0_SIZE, // bMaxPacketSize0
LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor
LSB(PRODUCT_ID), MSB(PRODUCT_ID), // idProduct
0x00, 0x01, // bcdDevice
1, // iManufacturer
2, // iProduct
0, // iSerialNumber
1 // bNumConfigurations
};
// Keyboard Protocol 1, HID 1.11 spec, Appendix B, page 59-60
static uint8_t PROGMEM keyboard_hid_report_desc[] = {
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),
0x25, 0x68, // Logical Maximum(104),
0x05, 0x07, // Usage Page (Key Codes),
0x19, 0x00, // Usage Minimum (0),
0x29, 0x68, // Usage Maximum (104),
0x81, 0x00, // Input (Data, Array),
0xc0 // End Collection
};
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// Mouse Protocol 1, HID 1.11 spec, Appendix B, page 59-60, with wheel extension
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// 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
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static uint8_t PROGMEM mouse_hid_report_desc[] = {
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0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x02, // USAGE (Mouse)
0xa1, 0x01, // COLLECTION (Application)
0x09, 0x02, // USAGE (Mouse)
0xa1, 0x02, // COLLECTION (Logical)
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)
// ------------------------------ Padding
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)
0xa1, 0x02, // COLLECTION (Logical)
// ------------------------------ Vertical wheel res multiplier
0x09, 0x48, // USAGE (Resolution Multiplier)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x35, 0x01, // PHYSICAL_MINIMUM (1)
0x45, 0x04, // PHYSICAL_MAXIMUM (4)
0x75, 0x02, // REPORT_SIZE (2)
0x95, 0x01, // REPORT_COUNT (1)
0xa4, // PUSH
0xb1, 0x02, // FEATURE (Data,Var,Abs)
// ------------------------------ 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)
0x81, 0x06, // INPUT (Data,Var,Rel)
0xc0, // END_COLLECTION
0xa1, 0x02, // COLLECTION (Logical)
// ------------------------------ Horizontal wheel res multiplier
0x09, 0x48, // USAGE (Resolution Multiplier)
0xb4, // POP
0xb1, 0x02, // FEATURE (Data,Var,Abs)
// ------------------------------ Padding for Feature report
0x35, 0x00, // PHYSICAL_MINIMUM (0) - reset physical
0x45, 0x00, // PHYSICAL_MAXIMUM (0)
0x75, 0x04, // REPORT_SIZE (4)
0xb1, 0x03, // FEATURE (Cnst,Var,Abs)
// ------------------------------ 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)
0x81, 0x06, // INPUT (Data,Var,Rel)
0xc0, // END_COLLECTION
0xc0, // END_COLLECTION
0xc0, // END_COLLECTION
0xc0 // END_COLLECTION
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};
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static uint8_t PROGMEM debug_hid_report_desc[] = {
0x06, 0x31, 0xFF, // Usage Page 0xFF31 (vendor defined)
0x09, 0x74, // Usage 0x74
0xA1, 0x53, // Collection 0x53
0x75, 0x08, // report size = 8 bits
0x15, 0x00, // logical minimum = 0
0x26, 0xFF, 0x00, // logical maximum = 255
0x95, DEBUG_TX_SIZE, // report count
0x09, 0x75, // usage
0x81, 0x02, // Input (array)
0xC0 // end collection
};
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// audio controls & system controls
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// http://www.microsoft.com/whdc/archive/w2kbd.mspx
static uint8_t PROGMEM extra_hid_report_desc[] = {
0x05, 0x0c, // USAGE_PAGE (Consumer Devices)
0x09, 0x01, // USAGE (Consumer Control)
0xa1, 0x01, // COLLECTION (Application)
0x85, 0x01, // REPORT_ID (1)
0x09, 0xe9, // USAGE (Volume Up)
0x09, 0xea, // USAGE (Volume Down)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x75, 0x01, // REPORT_SIZE (1)
0x95, 0x02, // REPORT_COUNT (2)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0xe2, // USAGE (Mute)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x75, 0x01, // REPORT_SIZE (1)
0x95, 0x01, // REPORT_COUNT (1)
0x81, 0x06, // INPUT (Data,Var,Rel)
0x95, 0x05, // REPORT_COUNT (5)
0x81, 0x07, // INPUT (Cnst,Var,Abs)
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0xc0, // END_COLLECTION
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x80, // USAGE (System Control)
0xa1, 0x01, // COLLECTION (Application)
0x85, 0x02, // REPORT_ID (2)
0x19, 0x81, // USAGE_MINIMUM (System Power Down)
0x29, 0x83, // USAGE_MAXIMUM (System Wake Up)
0x95, 0x03, // REPORT_COUNT (3)
0x81, 0x06, // INPUT (Data,Var,Rel)
0x95, 0x05, // REPORT_COUNT (5)
0x81, 0x07, // INPUT (Cnst,Var,Rel)
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0xc0 // END_COLLECTION
};
#define CONFIG1_DESC_SIZE (9+(9+9+7)*4)
#define KEYBOARD_HID_DESC_OFFSET (9+(9+9+7)*0+9)
#define MOUSE_HID_DESC_OFFSET (9+(9+9+7)*1+9)
#define DEBUG_HID_DESC_OFFSET (9+(9+9+7)*2+9)
#define EXTRA_HID_DESC_OFFSET (9+(9+9+7)*3+9)
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static uint8_t PROGMEM config1_descriptor[CONFIG1_DESC_SIZE] = {
// configuration descriptor, USB spec 9.6.3, page 264-266, Table 9-10
9, // bLength;
2, // bDescriptorType;
LSB(CONFIG1_DESC_SIZE), // wTotalLength
MSB(CONFIG1_DESC_SIZE),
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4, // bNumInterfaces
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1, // bConfigurationValue
0, // iConfiguration
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0xA0, // bmAttributes
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50, // bMaxPower
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// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
9, // bLength
4, // bDescriptorType
KEYBOARD_INTERFACE, // bInterfaceNumber
0, // bAlternateSetting
1, // bNumEndpoints
0x03, // bInterfaceClass (0x03 = HID)
0x01, // bInterfaceSubClass (0x01 = Boot)
0x01, // bInterfaceProtocol (0x01 = Keyboard)
0, // iInterface
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// HID descriptor, HID 1.11 spec, section 6.2.1
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9, // bLength
0x21, // bDescriptorType
0x11, 0x01, // bcdHID
0, // bCountryCode
1, // bNumDescriptors
0x22, // bDescriptorType
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sizeof(keyboard_hid_report_desc), // wDescriptorLength
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0,
// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
7, // bLength
5, // bDescriptorType
KEYBOARD_ENDPOINT | 0x80, // bEndpointAddress
0x03, // bmAttributes (0x03=intr)
KEYBOARD_SIZE, 0, // wMaxPacketSize
1, // bInterval
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// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
9, // bLength
4, // bDescriptorType
MOUSE_INTERFACE, // bInterfaceNumber
0, // bAlternateSetting
1, // bNumEndpoints
0x03, // bInterfaceClass (0x03 = HID)
0x01, // bInterfaceSubClass (0x01 = Boot)
0x02, // bInterfaceProtocol (0x02 = Mouse)
0, // iInterface
// HID descriptor, HID 1.11 spec, section 6.2.1
9, // bLength
0x21, // bDescriptorType
0x11, 0x01, // bcdHID
0, // bCountryCode
1, // bNumDescriptors
0x22, // bDescriptorType
sizeof(mouse_hid_report_desc), // wDescriptorLength
0,
// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
7, // bLength
5, // bDescriptorType
MOUSE_ENDPOINT | 0x80, // bEndpointAddress
0x03, // bmAttributes (0x03=intr)
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MOUSE_SIZE, 0, // wMaxPacketSize
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1, // bInterval
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// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
9, // bLength
4, // bDescriptorType
DEBUG_INTERFACE, // bInterfaceNumber
0, // bAlternateSetting
1, // bNumEndpoints
0x03, // bInterfaceClass (0x03 = HID)
0x00, // bInterfaceSubClass
0x00, // bInterfaceProtocol
0, // iInterface
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// HID descriptor, HID 1.11 spec, section 6.2.1
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9, // bLength
0x21, // bDescriptorType
0x11, 0x01, // bcdHID
0, // bCountryCode
1, // bNumDescriptors
0x22, // bDescriptorType
sizeof(debug_hid_report_desc), // wDescriptorLength
0,
// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
7, // bLength
5, // bDescriptorType
DEBUG_TX_ENDPOINT | 0x80, // bEndpointAddress
0x03, // bmAttributes (0x03=intr)
DEBUG_TX_SIZE, 0, // wMaxPacketSize
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1, // bInterval
// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
9, // bLength
4, // bDescriptorType
EXTRA_INTERFACE, // bInterfaceNumber
0, // bAlternateSetting
1, // bNumEndpoints
0x03, // bInterfaceClass (0x03 = HID)
0x00, // bInterfaceSubClass
0x00, // bInterfaceProtocol
0, // iInterface
// HID descriptor, HID 1.11 spec, section 6.2.1
9, // bLength
0x21, // bDescriptorType
0x11, 0x01, // bcdHID
0, // bCountryCode
1, // bNumDescriptors
0x22, // bDescriptorType
sizeof(extra_hid_report_desc), // wDescriptorLength
0,
// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
7, // bLength
5, // bDescriptorType
EXTRA_ENDPOINT | 0x80, // bEndpointAddress
0x03, // bmAttributes (0x03=intr)
EXTRA_SIZE, 0, // wMaxPacketSize
10, // bInterval
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};
// If you're desperate for a little extra code memory, these strings
// can be completely removed if iManufacturer, iProduct, iSerialNumber
// in the device desciptor are changed to zeros.
struct usb_string_descriptor_struct {
uint8_t bLength;
uint8_t bDescriptorType;
int16_t wString[];
};
static struct usb_string_descriptor_struct PROGMEM string0 = {
4,
3,
{0x0409}
};
static struct usb_string_descriptor_struct PROGMEM string1 = {
sizeof(STR_MANUFACTURER),
3,
STR_MANUFACTURER
};
static struct usb_string_descriptor_struct PROGMEM string2 = {
sizeof(STR_PRODUCT),
3,
STR_PRODUCT
};
// This table defines which descriptor data is sent for each specific
// request from the host (in wValue and wIndex).
static struct descriptor_list_struct {
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uint16_t wValue; // descriptor type
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uint16_t wIndex;
const uint8_t *addr;
uint8_t length;
} PROGMEM descriptor_list[] = {
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// DEVICE descriptor
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{0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
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// CONFIGURATION descriptor
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{0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)},
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// HID REPORT
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{0x2200, KEYBOARD_INTERFACE, keyboard_hid_report_desc, sizeof(keyboard_hid_report_desc)},
{0x2100, KEYBOARD_INTERFACE, config1_descriptor+KEYBOARD_HID_DESC_OFFSET, 9},
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// HID REPORT
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{0x2200, MOUSE_INTERFACE, mouse_hid_report_desc, sizeof(mouse_hid_report_desc)},
{0x2100, MOUSE_INTERFACE, config1_descriptor+MOUSE_HID_DESC_OFFSET, 9},
// HID REPORT
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{0x2200, DEBUG_INTERFACE, debug_hid_report_desc, sizeof(debug_hid_report_desc)},
{0x2100, DEBUG_INTERFACE, config1_descriptor+DEBUG_HID_DESC_OFFSET, 9},
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// HID REPORT
{0x2200, EXTRA_INTERFACE, extra_hid_report_desc, sizeof(extra_hid_report_desc)},
{0x2100, EXTRA_INTERFACE, config1_descriptor+EXTRA_HID_DESC_OFFSET, 9},
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// STRING descriptor
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{0x0300, 0x0000, (const uint8_t *)&string0, 4},
{0x0301, 0x0409, (const uint8_t *)&string1, sizeof(STR_MANUFACTURER)},
{0x0302, 0x0409, (const uint8_t *)&string2, sizeof(STR_PRODUCT)}
};
#define NUM_DESC_LIST (sizeof(descriptor_list)/sizeof(struct descriptor_list_struct))
/**************************************************************************
*
* Variables - these are the only non-stack RAM usage
*
**************************************************************************/
// zero when we are not configured, non-zero when enumerated
static volatile uint8_t usb_configuration=0;
/**************************************************************************
*
* Public Functions - these are the API intended for the user
*
**************************************************************************/
// initialize USB
void usb_init(void)
{
HW_CONFIG();
USB_FREEZE(); // enable USB
PLL_CONFIG(); // config PLL
while (!(PLLCSR & (1<<PLOCK))) ; // wait for PLL lock
USB_CONFIG(); // start USB clock
UDCON = 0; // enable attach resistor
usb_configuration = 0;
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UDIEN = (1<<EORSTE)|(1<<SOFE)|(1<<SUSPE);
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sei();
}
// return 0 if the USB is not configured, or the configuration
// number selected by the HOST
uint8_t usb_configured(void)
{
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return usb_configuration && !suspend;
}
void usb_remote_wakeup(void)
{
UDCON |= (1<<RMWKUP);
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}
/**************************************************************************
*
* Private Functions - not intended for general user consumption....
*
**************************************************************************/
// USB Device Interrupt - handle all device-level events
// the transmit buffer flushing is triggered by the start of frame
//
ISR(USB_GEN_vect)
{
uint8_t intbits, t, i;
static uint8_t div4=0;
intbits = UDINT;
UDINT = 0;
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if (intbits & (1<<SUSPI)) {
suspend = true;
} else {
suspend = false;
}
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if (intbits & (1<<EORSTI)) {
UENUM = 0;
UECONX = 1;
UECFG0X = EP_TYPE_CONTROL;
UECFG1X = EP_SIZE(ENDPOINT0_SIZE) | EP_SINGLE_BUFFER;
UEIENX = (1<<RXSTPE);
usb_configuration = 0;
}
if ((intbits & (1<<SOFI)) && usb_configuration) {
t = debug_flush_timer;
if (t) {
debug_flush_timer = -- t;
if (!t) {
UENUM = DEBUG_TX_ENDPOINT;
while ((UEINTX & (1<<RWAL))) {
UEDATX = 0;
}
UEINTX = 0x3A;
}
}
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if (usb_keyboard_idle_config && (++div4 & 3) == 0) {
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UENUM = KEYBOARD_ENDPOINT;
if (UEINTX & (1<<RWAL)) {
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usb_keyboard_idle_count++;
if (usb_keyboard_idle_count == usb_keyboard_idle_config) {
usb_keyboard_idle_count = 0;
UEDATX = usb_keyboard_mods;
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UEDATX = 0;
for (i=0; i<6; i++) {
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UEDATX = usb_keyboard_keys[i];
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}
UEINTX = 0x3A;
}
}
}
}
}
// Misc functions to wait for ready and send/receive packets
static inline void usb_wait_in_ready(void)
{
while (!(UEINTX & (1<<TXINI))) ;
}
static inline void usb_send_in(void)
{
UEINTX = ~(1<<TXINI);
}
static inline void usb_wait_receive_out(void)
{
while (!(UEINTX & (1<<RXOUTI))) ;
}
static inline void usb_ack_out(void)
{
UEINTX = ~(1<<RXOUTI);
}
// USB Endpoint Interrupt - endpoint 0 is handled here. The
// other endpoints are manipulated by the user-callable
// functions, and the start-of-frame interrupt.
//
ISR(USB_COM_vect)
{
uint8_t intbits;
const uint8_t *list;
const uint8_t *cfg;
uint8_t i, n, len, en;
uint8_t bmRequestType;
uint8_t bRequest;
uint16_t wValue;
uint16_t wIndex;
uint16_t wLength;
uint16_t desc_val;
const uint8_t *desc_addr;
uint8_t desc_length;
UENUM = 0;
intbits = UEINTX;
if (intbits & (1<<RXSTPI)) {
bmRequestType = UEDATX;
bRequest = UEDATX;
wValue = UEDATX;
wValue |= (UEDATX << 8);
wIndex = UEDATX;
wIndex |= (UEDATX << 8);
wLength = UEDATX;
wLength |= (UEDATX << 8);
UEINTX = ~((1<<RXSTPI) | (1<<RXOUTI) | (1<<TXINI));
if (bRequest == GET_DESCRIPTOR) {
list = (const uint8_t *)descriptor_list;
for (i=0; ; i++) {
if (i >= NUM_DESC_LIST) {
UECONX = (1<<STALLRQ)|(1<<EPEN); //stall
return;
}
desc_val = pgm_read_word(list);
if (desc_val != wValue) {
list += sizeof(struct descriptor_list_struct);
continue;
}
list += 2;
desc_val = pgm_read_word(list);
if (desc_val != wIndex) {
list += sizeof(struct descriptor_list_struct)-2;
continue;
}
list += 2;
desc_addr = (const uint8_t *)pgm_read_word(list);
list += 2;
desc_length = pgm_read_byte(list);
break;
}
len = (wLength < 256) ? wLength : 255;
if (len > desc_length) len = desc_length;
do {
// wait for host ready for IN packet
do {
i = UEINTX;
} while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
if (i & (1<<RXOUTI)) return; // abort
// send IN packet
n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
for (i = n; i; i--) {
UEDATX = pgm_read_byte(desc_addr++);
}
len -= n;
usb_send_in();
} while (len || n == ENDPOINT0_SIZE);
return;
}
if (bRequest == SET_ADDRESS) {
usb_send_in();
usb_wait_in_ready();
UDADDR = wValue | (1<<ADDEN);
return;
}
if (bRequest == SET_CONFIGURATION && bmRequestType == 0) {
usb_configuration = wValue;
usb_send_in();
cfg = endpoint_config_table;
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for (i=1; i<=6; i++) {
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UENUM = i;
en = pgm_read_byte(cfg++);
UECONX = en;
if (en) {
UECFG0X = pgm_read_byte(cfg++);
UECFG1X = pgm_read_byte(cfg++);
}
}
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UERST = 0x7E;
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UERST = 0;
return;
}
if (bRequest == GET_CONFIGURATION && bmRequestType == 0x80) {
usb_wait_in_ready();
UEDATX = usb_configuration;
usb_send_in();
return;
}
if (bRequest == GET_STATUS) {
usb_wait_in_ready();
i = 0;
#ifdef SUPPORT_ENDPOINT_HALT
if (bmRequestType == 0x82) {
UENUM = wIndex;
if (UECONX & (1<<STALLRQ)) i = 1;
UENUM = 0;
}
#endif
UEDATX = i;
UEDATX = 0;
usb_send_in();
return;
}
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if (bRequest == CLEAR_FEATURE || bRequest == SET_FEATURE) {
#ifdef SUPPORT_ENDPOINT_HALT
if (bmRequestType == 0x02 && wValue == ENDPOINT_HALT) {
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i = wIndex & 0x7F;
if (i >= 1 && i <= MAX_ENDPOINT) {
usb_send_in();
UENUM = i;
if (bRequest == SET_FEATURE) {
UECONX = (1<<STALLRQ)|(1<<EPEN);
} else {
UECONX = (1<<STALLRQC)|(1<<RSTDT)|(1<<EPEN);
UERST = (1 << i);
UERST = 0;
}
return;
}
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}
#endif
if (bmRequestType == 0x00 && wValue == DEVICE_REMOTE_WAKEUP) {
if (bRequest == SET_FEATURE) {
remote_wakeup = true;
} else {
remote_wakeup = false;
}
usb_send_in();
return;
}
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}
if (wIndex == KEYBOARD_INTERFACE) {
if (bmRequestType == 0xA1) {
if (bRequest == HID_GET_REPORT) {
usb_wait_in_ready();
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UEDATX = usb_keyboard_mods;
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UEDATX = 0;
for (i=0; i<6; i++) {
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UEDATX = usb_keyboard_keys[i];
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}
usb_send_in();
return;
}
if (bRequest == HID_GET_IDLE) {
usb_wait_in_ready();
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UEDATX = usb_keyboard_idle_config;
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usb_send_in();
return;
}
if (bRequest == HID_GET_PROTOCOL) {
usb_wait_in_ready();
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UEDATX = usb_keyboard_protocol;
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usb_send_in();
return;
}
}
if (bmRequestType == 0x21) {
if (bRequest == HID_SET_REPORT) {
usb_wait_receive_out();
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usb_keyboard_leds = UEDATX;
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usb_ack_out();
usb_send_in();
return;
}
if (bRequest == HID_SET_IDLE) {
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usb_keyboard_idle_config = (wValue >> 8);
usb_keyboard_idle_count = 0;
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//usb_wait_in_ready();
usb_send_in();
return;
}
if (bRequest == HID_SET_PROTOCOL) {
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usb_keyboard_protocol = wValue;
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//usb_wait_in_ready();
usb_send_in();
return;
}
}
}
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if (wIndex == MOUSE_INTERFACE) {
if (bmRequestType == 0xA1) {
if (bRequest == HID_GET_REPORT) {
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if (wValue == HID_REPORT_INPUT) {
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usb_wait_in_ready();
UEDATX = mouse_buttons;
UEDATX = 0;
UEDATX = 0;
UEDATX = 0;
usb_send_in();
return;
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}
if (wValue == HID_REPORT_FEATURE) {
usb_wait_in_ready();
UEDATX = 0x05;
usb_send_in();
return;
}
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}
if (bRequest == HID_GET_PROTOCOL) {
usb_wait_in_ready();
UEDATX = mouse_protocol;
usb_send_in();
return;
}
}
if (bmRequestType == 0x21) {
if (bRequest == HID_SET_PROTOCOL) {
mouse_protocol = wValue;
usb_send_in();
return;
}
}
}
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if (wIndex == DEBUG_INTERFACE) {
if (bRequest == HID_GET_REPORT && bmRequestType == 0xA1) {
len = wLength;
do {
// wait for host ready for IN packet
do {
i = UEINTX;
} while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
if (i & (1<<RXOUTI)) return; // abort
// send IN packet
n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
for (i = n; i; i--) {
UEDATX = 0;
}
len -= n;
usb_send_in();
} while (len || n == ENDPOINT0_SIZE);
return;
}
}
}
UECONX = (1<<STALLRQ) | (1<<EPEN); // stall
}
Reference in a new issue Copy permalink