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- /* USB Serial Example for Teensy USB Development Board
- * http://www.pjrc.com/teensy/usb_serial.html
- * Copyright (c) 2008 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.
- */
-
-
- #include "usb_common.h"
- #include "usb_private.h"
-
-
-
- /**************************************************************************
- *
- * Endpoint Buffer Configuration
- *
- **************************************************************************/
-
-
- static const uint8_t PROGMEM endpoint_config_table[] = {
- EP_TYPE_INTERRUPT_IN, EP_SIZE(DEBUG_TX_SIZE) | DEBUG_TX_BUFFER,
- EP_TYPE_INTERRUPT_OUT, EP_SIZE(DEBUG_RX_SIZE) | DEBUG_RX_BUFFER,
- EP_TYPE_INTERRUPT_IN, EP_SIZE(KEYBOARD_SIZE) | KEYBOARD_BUFFER,
- EP_TYPE_INTERRUPT_IN, EP_SIZE(MOUSE_SIZE) | MOUSE_BUFFER,
- EP_TYPE_INTERRUPT_IN, EP_SIZE(JOYSTICK_SIZE) | JOYSTICK_BUFFER,
- EP_TYPE_INTERRUPT_IN, EP_SIZE(KEYMEDIA_SIZE) | KEYMEDIA_BUFFER,
- };
-
-
- /**************************************************************************
- *
- * 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 const 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
- 0x05, 0x01, // bcdDevice
- 0, // iManufacturer
- 1, // iProduct
- 0, // iSerialNumber
- 1 // bNumConfigurations
- };
-
- // Keyboard Protocol 1, HID 1.11 spec, Appendix B, page 59-60
- static const 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, 0x7F, // Logical Maximum(104),
- 0x05, 0x07, // Usage Page (Key Codes),
- 0x19, 0x00, // Usage Minimum (0),
- 0x29, 0x7F, // Usage Maximum (104),
- 0x81, 0x00, // Input (Data, Array), ;Normal keys
- 0xc0 // End Collection
- };
-
- static const uint8_t PROGMEM keymedia_hid_report_desc[] = {
- 0x05, 0x0C, // Usage Page (Consumer)
- 0x09, 0x01, // Usage (Consumer Controls)
- 0xA1, 0x01, // Collection (Application)
- 0x75, 0x0A, // Report Size (10)
- 0x95, 0x04, // Report Count (4)
- 0x19, 0x00, // Usage Minimum (0)
- 0x2A, 0x9C, 0x02, // Usage Maximum (0x29C)
- 0x15, 0x00, // Logical Minimum (0)
- 0x26, 0x9C, 0x02, // Logical Maximum (0x29C)
- 0x81, 0x00, // Input (Data, Array)
- 0x05, 0x01, // Usage Page (Generic Desktop)
- 0x75, 0x08, // Report Size (8)
- 0x95, 0x03, // Report Count (3)
- 0x19, 0x00, // Usage Minimum (0)
- 0x29, 0xB7, // Usage Maximum (0xB7)
- 0x15, 0x00, // Logical Minimum (0)
- 0x26, 0xB7, 0x00, // Logical Maximum (0xB7)
- 0x81, 0x00, // Input (Data, Array)
- 0xC0 // End Collection
- };
-
- // Mouse Protocol 1, HID 1.11 spec, Appendix B, page 59-60, with wheel extension
- static const uint8_t PROGMEM mouse_hid_report_desc[] = {
- 0x05, 0x01, // Usage Page (Generic Desktop)
- 0x09, 0x02, // Usage (Mouse)
- 0xA1, 0x01, // Collection (Application)
- 0x05, 0x09, // Usage Page (Button)
- 0x19, 0x01, // Usage Minimum (Button #1)
- 0x29, 0x08, // Usage Maximum (Button #8)
- 0x15, 0x00, // Logical Minimum (0)
- 0x25, 0x01, // Logical Maximum (1)
- 0x95, 0x08, // Report Count (8)
- 0x75, 0x01, // Report Size (1)
- 0x81, 0x02, // Input (Data, Variable, Absolute)
- 0x05, 0x01, // Usage Page (Generic Desktop)
- 0x09, 0x30, // Usage (X)
- 0x09, 0x31, // Usage (Y)
- 0x09, 0x38, // Usage (Wheel)
- 0x15, 0x81, // Logical Minimum (-127)
- 0x25, 0x7F, // Logical Maximum (127)
- 0x75, 0x08, // Report Size (8),
- 0x95, 0x03, // Report Count (3),
- 0x81, 0x06, // Input (Data, Variable, Relative)
- 0x05, 0x0C, // Usage Page (Consumer)
- 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, Variable, Relative)
- 0xC0 // End Collection
- };
-
- #ifdef JOYSTICK_INTERFACE
- static const uint8_t PROGMEM joystick_hid_report_desc[] = {
- 0x05, 0x01, // Usage Page (Generic Desktop)
- 0x09, 0x04, // Usage (Joystick)
- 0xA1, 0x01, // Collection (Application)
- 0x15, 0x00, // Logical Minimum (0)
- 0x25, 0x01, // Logical Maximum (1)
- 0x75, 0x01, // Report Size (1)
- 0x95, 0x20, // Report Count (32)
- 0x05, 0x09, // Usage Page (Button)
- 0x19, 0x01, // Usage Minimum (Button #1)
- 0x29, 0x20, // Usage Maximum (Button #32)
- 0x81, 0x02, // Input (variable,absolute)
- 0x15, 0x00, // Logical Minimum (0)
- 0x25, 0x07, // Logical Maximum (7)
- 0x35, 0x00, // Physical Minimum (0)
- 0x46, 0x3B, 0x01, // Physical Maximum (315)
- 0x75, 0x04, // Report Size (4)
- 0x95, 0x01, // Report Count (1)
- 0x65, 0x14, // Unit (20)
- 0x05, 0x01, // Usage Page (Generic Desktop)
- 0x09, 0x39, // Usage (Hat switch)
- 0x81, 0x42, // Input (variable,absolute,null_state)
- 0x05, 0x01, // Usage Page (Generic Desktop)
- 0x09, 0x01, // Usage (Pointer)
- 0xA1, 0x00, // Collection ()
- 0x15, 0x00, // Logical Minimum (0)
- 0x26, 0xFF, 0x03, // Logical Maximum (1023)
- 0x75, 0x0A, // Report Size (10)
- 0x95, 0x04, // Report Count (4)
- 0x09, 0x30, // Usage (X)
- 0x09, 0x31, // Usage (Y)
- 0x09, 0x32, // Usage (Z)
- 0x09, 0x35, // Usage (Rz)
- 0x81, 0x02, // Input (variable,absolute)
- 0xC0, // End Collection
- 0x15, 0x00, // Logical Minimum (0)
- 0x26, 0xFF, 0x03, // Logical Maximum (1023)
- 0x75, 0x0A, // Report Size (10)
- 0x95, 0x02, // Report Count (2)
- 0x09, 0x36, // Usage (Slider)
- 0x09, 0x36, // Usage (Slider)
- 0x81, 0x02, // Input (variable,absolute)
- 0xC0 // End Collection
- };
- #endif
-
-
-
-
-
-
-
- static const uint8_t PROGMEM debug_hid_report_desc[] = {
- 0x06, 0xC9, 0xFF, // Usage Page 0xFFC9 (vendor defined)
- 0x09, 0x04, // Usage 0x04
- 0xA1, 0x5C, // Collection 0x5C
- 0x75, 0x08, // report size = 8 bits (global)
- 0x15, 0x00, // logical minimum = 0 (global)
- 0x26, 0xFF, 0x00, // logical maximum = 255 (global)
- 0x95, DEBUG_TX_SIZE, // report count (global)
- 0x09, 0x75, // usage (local)
- 0x81, 0x02, // Input
- 0x95, DEBUG_RX_SIZE, // report count (global)
- 0x09, 0x76, // usage (local)
- 0x91, 0x02, // Output
- 0x95, 0x04, // report count (global)
- 0x09, 0x76, // usage (local)
- 0xB1, 0x02, // Feature
- 0xC0 // end collection
- };
-
-
-
- #define KEYBOARD_HID_DESC_OFFSET ( 9 + 9 )
- #define MOUSE_HID_DESC_OFFSET ( 9 + 9+9+7 + 9 )
- #define DEBUG_HID_DESC_OFFSET ( 9 + 9+9+7 + 9+9+7 + 9 )
- #define JOYSTICK_HID_DESC_OFFSET ( 9 + 9+9+7 + 9+9+7 + 9+9+7+7 + 9 )
- #define KEYMEDIA_HID_DESC_OFFSET ( 9 + 9+9+7 + 9+9+7 + 9+9+7+7 + 9+9+7 + 9 )
- #define CONFIG1_DESC_SIZE ( 9 + 9+9+7 + 9+9+7 + 9+9+7+7 + 9+9+7 + 9+9+7 )
-
- static const 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),
- NUM_INTERFACE, // bNumInterfaces
- 1, // bConfigurationValue
- 0, // iConfiguration
- 0xC0, // bmAttributes
- 50, // bMaxPower
-
- // 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
- // HID interface descriptor, HID 1.11 spec, section 6.2.1
- 9, // bLength
- 0x21, // bDescriptorType
- 0x11, 0x01, // bcdHID
- 0, // bCountryCode
- 1, // bNumDescriptors
- 0x22, // bDescriptorType
- sizeof(keyboard_hid_report_desc), // wDescriptorLength
- 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
- KEYBOARD_INTERVAL, // bInterval
-
- // 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 interface 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)
- MOUSE_SIZE, 0, // wMaxPacketSize
- MOUSE_INTERVAL, // bInterval
-
- // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
- 9, // bLength
- 4, // bDescriptorType
- DEBUG_INTERFACE, // bInterfaceNumber
- 0, // bAlternateSetting
- 2, // bNumEndpoints
- 0x03, // bInterfaceClass (0x03 = HID)
- 0x00, // bInterfaceSubClass
- 0x00, // bInterfaceProtocol
- 0, // iInterface
- // HID interface descriptor, HID 1.11 spec, section 6.2.1
- 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
- DEBUG_TX_INTERVAL, // bInterval
- // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
- 7, // bLength
- 5, // bDescriptorType
- DEBUG_RX_ENDPOINT, // bEndpointAddress
- 0x03, // bmAttributes (0x03=intr)
- DEBUG_RX_SIZE, 0, // wMaxPacketSize
- DEBUG_RX_INTERVAL, // bInterval
-
- // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
- 9, // bLength
- 4, // bDescriptorType
- JOYSTICK_INTERFACE, // bInterfaceNumber
- 0, // bAlternateSetting
- 1, // bNumEndpoints
- 0x03, // bInterfaceClass (0x03 = HID)
- 0x00, // bInterfaceSubClass
- 0x00, // bInterfaceProtocol
- 0, // iInterface
- // HID interface descriptor, HID 1.11 spec, section 6.2.1
- 9, // bLength
- 0x21, // bDescriptorType
- 0x11, 0x01, // bcdHID
- 0, // bCountryCode
- 1, // bNumDescriptors
- 0x22, // bDescriptorType
- sizeof(joystick_hid_report_desc), // wDescriptorLength
- 0,
- // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
- 7, // bLength
- 5, // bDescriptorType
- JOYSTICK_ENDPOINT | 0x80, // bEndpointAddress
- 0x03, // bmAttributes (0x03=intr)
- 12, 0, // wMaxPacketSize
- JOYSTICK_INTERVAL, // bInterval
-
- // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
- 9, // bLength
- 4, // bDescriptorType
- KEYMEDIA_INTERFACE, // bInterfaceNumber
- 0, // bAlternateSetting
- 1, // bNumEndpoints
- 0x03, // bInterfaceClass (0x03 = HID)
- 0x00, // bInterfaceSubClass
- 0x00, // bInterfaceProtocol
- 0, // iInterface
- // HID interface descriptor, HID 1.11 spec, section 6.2.1
- 9, // bLength
- 0x21, // bDescriptorType
- 0x11, 0x01, // bcdHID
- 0, // bCountryCode
- 1, // bNumDescriptors
- 0x22, // bDescriptorType
- LSB(sizeof(keymedia_hid_report_desc)), // wDescriptorLength
- MSB(sizeof(keymedia_hid_report_desc)),
- // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
- 7, // bLength
- 5, // bDescriptorType
- KEYMEDIA_ENDPOINT | 0x80, // bEndpointAddress
- 0x03, // bmAttributes (0x03=intr)
- KEYMEDIA_SIZE, 0, // wMaxPacketSize
- KEYMEDIA_INTERVAL, // bInterval
- };
-
- // 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 const struct usb_string_descriptor_struct PROGMEM string0 = {
- 4,
- 3,
- {0x0409}
- };
- static const struct usb_string_descriptor_struct PROGMEM string1 = {
- 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 const struct descriptor_list_struct {
- uint16_t wValue;
- uint16_t wIndex;
- const uint8_t *addr;
- uint8_t length;
- } PROGMEM descriptor_list[] = {
- {0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
- {0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)},
- {0x2200, KEYBOARD_INTERFACE, keyboard_hid_report_desc, sizeof(keyboard_hid_report_desc)},
- {0x2100, KEYBOARD_INTERFACE, config1_descriptor+KEYBOARD_HID_DESC_OFFSET, 9},
- {0x2200, MOUSE_INTERFACE, mouse_hid_report_desc, sizeof(mouse_hid_report_desc)},
- {0x2100, MOUSE_INTERFACE, config1_descriptor+MOUSE_HID_DESC_OFFSET, 9},
- {0x2200, DEBUG_INTERFACE, debug_hid_report_desc, sizeof(debug_hid_report_desc)},
- {0x2100, DEBUG_INTERFACE, config1_descriptor+DEBUG_HID_DESC_OFFSET, 9},
- {0x2200, JOYSTICK_INTERFACE, joystick_hid_report_desc, sizeof(joystick_hid_report_desc)},
- {0x2100, JOYSTICK_INTERFACE, config1_descriptor+JOYSTICK_HID_DESC_OFFSET, 9},
- {0x2200, KEYMEDIA_INTERFACE, keymedia_hid_report_desc, sizeof(keymedia_hid_report_desc)},
- {0x2100, KEYMEDIA_INTERFACE, config1_descriptor+KEYMEDIA_HID_DESC_OFFSET, 9},
- {0x0300, 0x0000, (const uint8_t *)&string0, 4},
- {0x0301, 0x0409, (const uint8_t *)&string1, 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
- volatile uint8_t usb_configuration USBSTATE;
- volatile uint8_t usb_suspended USBSTATE;
-
- // the time remaining before we transmit any partially full
- // packet, or send a zero length packet.
- volatile uint8_t debug_flush_timer USBSTATE;
-
- // byte0: which modifier keys are currently pressed
- // 1=left ctrl, 2=left shift, 4=left alt, 8=left gui
- // 16=right ctrl, 32=right shift, 64=right alt, 128=right gui
- // byte1: media keys (TODO: document these)
- // bytes2-7: which keys are currently pressed, up to 6 keys may be down at once
- uint8_t keyboard_report_data[8] USBSTATE;
-
- // protocol setting from the host. We use exactly the same report
- // either way, so this variable only stores the setting since we
- // are required to be able to report which setting is in use.
- static uint8_t keyboard_protocol USBSTATE;
-
- // the idle configuration, how often we send the report to the
- // host (ms * 4) even when it hasn't changed
- static uint8_t keyboard_idle_config USBSTATE;
-
- // count until idle timeout
- uint8_t keyboard_idle_count USBSTATE;
-
- // 1=num lock, 2=caps lock, 4=scroll lock, 8=compose, 16=kana
- volatile uint8_t keyboard_leds USBSTATE;
-
- // which buttons are currently pressed
- uint8_t mouse_buttons USBSTATE;
-
- // protocol setting from the host. We use exactly the same report
- // either way, so this variable only stores the setting since we
- // are required to be able to report which setting is in use.
- static uint8_t mouse_protocol USBSTATE;
-
- // joystick data
- uint8_t joystick_report_data[12] USBSTATE;
-
- // keyboard media keys data
- uint8_t keymedia_report_data[8] USBSTATE;
- uint16_t keymedia_consumer_keys[4] USBSTATE;
- uint8_t keymedia_system_keys[3] USBSTATE;
-
-
-
- /**************************************************************************
- *
- * Public Functions - these are the API intended for the user
- *
- **************************************************************************/
-
-
-
- // initialize USB serial
- void usb_init(void)
- {
- uint8_t u;
-
- u = USBCON;
- if ((u & (1<<USBE)) && !(u & (1<<FRZCLK))) return;
- 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;
- usb_suspended = 0;
- debug_flush_timer = 0;
- keyboard_report_data[0] = 0;
- keyboard_report_data[1] = 0;
- keyboard_report_data[2] = 0;
- keyboard_report_data[3] = 0;
- keyboard_report_data[4] = 0;
- keyboard_report_data[5] = 0;
- keyboard_report_data[6] = 0;
- keyboard_report_data[7] = 0;
- keyboard_protocol = 1;
- keyboard_idle_config = 125;
- keyboard_idle_count = 0;
- keyboard_leds = 0;
- mouse_buttons = 0;
- mouse_protocol = 1;
- joystick_report_data[0] = 0;
- joystick_report_data[1] = 0;
- joystick_report_data[2] = 0;
- joystick_report_data[3] = 0;
- joystick_report_data[4] = 0x0F;
- joystick_report_data[5] = 0x20;
- joystick_report_data[6] = 0x80;
- joystick_report_data[7] = 0x00;
- joystick_report_data[8] = 0x02;
- joystick_report_data[9] = 0x08;
- joystick_report_data[10] = 0x20;
- joystick_report_data[11] = 0x80;
- keymedia_report_data[0] = 0;
- keymedia_report_data[1] = 0;
- keymedia_report_data[2] = 0;
- keymedia_report_data[3] = 0;
- keymedia_report_data[4] = 0;
- keymedia_report_data[5] = 0;
- keymedia_report_data[6] = 0;
- keymedia_report_data[7] = 0;
- keymedia_consumer_keys[0] = 0;
- keymedia_consumer_keys[1] = 0;
- keymedia_consumer_keys[2] = 0;
- keymedia_consumer_keys[3] = 0;
- keymedia_system_keys[0] = 0;
- keymedia_system_keys[1] = 0;
- keymedia_system_keys[2] = 0;
- UDINT = 0;
- UDIEN = (1<<EORSTE)|(1<<SOFE);
- //sei(); // init() in wiring.c does this
- }
-
- void usb_shutdown(void)
- {
- UDIEN = 0; // disable interrupts
- UDCON = 1; // disconnect attach resistor
- USBCON = 0; // shut off USB periperal
- PLLCSR = 0; // shut off PLL
- usb_configuration = 0;
- usb_suspended = 1;
- }
-
-
- // Public API functions moved to usb_api.cpp
-
- /**************************************************************************
- *
- * 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;
- 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;
- }
- }
- if (keyboard_idle_config && (++div4 & 3) == 0) {
- UENUM = KEYBOARD_ENDPOINT;
- if (UEINTX & (1<<RWAL)) {
- keyboard_idle_count++;
- if (keyboard_idle_count == keyboard_idle_config) {
- keyboard_idle_count = 0;
- //len = keyboard_protocol ? sizeof(keyboard_keys) : 8;
- for (i=0; i < 8; i++) {
- UEDATX = keyboard_report_data[i];
- }
- UEINTX = 0x3A;
- }
- }
- }
- }
- if (intbits & (1<<SUSPI)) {
- // USB Suspend (inactivity for 3ms)
- UDIEN = (1<<WAKEUPE);
- usb_configuration = 0;
- usb_suspended = 1;
- #if (F_CPU >= 8000000L)
- // WAKEUPI does not work with USB clock freeze
- // when CPU is running less than 8 MHz.
- // Is this a hardware bug?
- USB_FREEZE(); // shut off USB
- PLLCSR = 0; // shut off PLL
- #endif
- // to properly meet the USB spec, current must
- // reduce to less than 2.5 mA, which means using
- // powerdown mode, but that breaks the Arduino
- // user's paradigm....
- }
- if (usb_suspended && (intbits & (1<<WAKEUPI))) {
- // USB Resume (pretty much any activity)
- #if (F_CPU >= 8000000L)
- PLL_CONFIG();
- while (!(PLLCSR & (1<<PLOCK))) ;
- USB_CONFIG();
- #endif
- UDIEN = (1<<EORSTE)|(1<<SOFE)|(1<<SUSPE);
- usb_suspended = 0;
- return;
- }
- }
-
-
- // 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;
- 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;
- read_word_lsbfirst(wValue, UEDATX);
- read_word_lsbfirst(wIndex, UEDATX);
- read_word_lsbfirst(wLength, UEDATX);
- 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;
- }
- pgm_read_word_postinc(desc_val, list);
- if (desc_val != wValue) {
- list += sizeof(struct descriptor_list_struct)-2;
- continue;
- }
- pgm_read_word_postinc(desc_val, list);
- if (desc_val != wIndex) {
- list += sizeof(struct descriptor_list_struct)-4;
- continue;
- }
- pgm_read_word_postinc(desc_addr, list);
- desc_length = pgm_read_byte(list);
- break;
- }
- len = (wLength < 256) ? wLength : 255;
- if (len > desc_length) len = desc_length;
- list = desc_addr;
- 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--) {
- pgm_read_byte_postinc(UEDATX, list);
- }
- 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;
- debug_flush_timer = 0;
- usb_send_in();
- cfg = endpoint_config_table;
- for (i=1; i<7; i++) {
- UENUM = i;
- UECONX = 1;
- pgm_read_byte_postinc(UECFG0X, cfg);
- pgm_read_byte_postinc(UECFG1X, cfg);
- }
- UERST = 0x1E;
- 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;
- if (bmRequestType == 0x82) {
- UENUM = wIndex;
- if (UECONX & (1<<STALLRQ)) i = 1;
- UENUM = 0;
- }
- UEDATX = i;
- UEDATX = 0;
- usb_send_in();
- return;
- }
- if ((bRequest == CLEAR_FEATURE || bRequest == SET_FEATURE)
- && bmRequestType == 0x02 && wValue == 0) {
- i = wIndex & 0x7F;
- if (i >= 1 && i <= NUM_ENDPOINTS) {
- 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;
- }
- }
- if (wIndex == KEYBOARD_INTERFACE) {
- if (bmRequestType == 0xA1) {
- if (bRequest == HID_GET_REPORT) {
- usb_wait_in_ready();
- //len = keyboard_protocol ? sizeof(keyboard_keys) : 8;
- for (i=0; i < 8; i++) {
- UEDATX = keyboard_report_data[i];
- }
- usb_send_in();
- return;
- }
- if (bRequest == HID_GET_IDLE) {
- usb_wait_in_ready();
- UEDATX = keyboard_idle_config;
- usb_send_in();
- return;
- }
- if (bRequest == HID_GET_PROTOCOL) {
- usb_wait_in_ready();
- UEDATX = keyboard_protocol;
- usb_send_in();
- return;
- }
- }
- if (bmRequestType == 0x21) {
- if (bRequest == HID_SET_REPORT) {
- usb_wait_receive_out();
- keyboard_leds = UEDATX;
- usb_ack_out();
- usb_send_in();
- return;
- }
- if (bRequest == HID_SET_IDLE) {
- keyboard_idle_config = (wValue >> 8);
- keyboard_idle_count = 0;
- //usb_wait_in_ready();
- usb_send_in();
- return;
- }
- if (bRequest == HID_SET_PROTOCOL) {
- keyboard_protocol = wValue;
- //usb_wait_in_ready();
- usb_send_in();
- return;
- }
- }
- }
- if (wIndex == MOUSE_INTERFACE) {
- if (bmRequestType == 0xA1) {
- if (bRequest == HID_GET_REPORT) {
- usb_wait_in_ready();
- UEDATX = mouse_buttons;
- UEDATX = 0;
- UEDATX = 0;
- UEDATX = 0;
- UEDATX = 0;
- usb_send_in();
- return;
- }
- 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;
- }
- }
- }
- if (wIndex == JOYSTICK_INTERFACE) {
- if (bmRequestType == 0xA1) {
- if (bRequest == HID_GET_REPORT) {
- usb_wait_in_ready();
- for (i=0; i<12; i++) {
- UEDATX = joystick_report_data[i];
- }
- usb_send_in();
- return;
- }
- }
- }
- if (wIndex == KEYMEDIA_INTERFACE) {
- if (bmRequestType == 0xA1) {
- if (bRequest == HID_GET_REPORT) {
- usb_wait_in_ready();
- for (i=0; i<8; i++) {
- UEDATX = keymedia_report_data[i];
- }
- usb_send_in();
- return;
- }
- }
- }
- 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;
- }
- if (bRequest == HID_SET_REPORT && bmRequestType == 0x21) {
- if (wValue == 0x0300 && wLength == 0x0004) {
- uint8_t b1, b2, b3, b4;
- usb_wait_receive_out();
- b1 = UEDATX;
- b2 = UEDATX;
- b3 = UEDATX;
- b4 = UEDATX;
- usb_ack_out();
- usb_send_in();
- if (b1 == 0xA9 && b2 == 0x45 && b3 == 0xC2 && b4 == 0x6B)
- _reboot_Teensyduino_();
- if (b1 == 0x8B && b2 == 0xC5 && b3 == 0x1D && b4 == 0x70)
- _restart_Teensyduino_();
- }
- }
- }
- if (bRequest == 0xC9 && bmRequestType == 0x40) {
- usb_send_in();
- usb_wait_in_ready();
- _restart_Teensyduino_();
- }
- }
- UECONX = (1<<STALLRQ) | (1<<EPEN); // stall
- }
-
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