/* 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 }