- /* Teensyduino Core Library
- * http://www.pjrc.com/teensy/
- * Copyright (c) 2013 PJRC.COM, LLC.
- * Modifications by Jacob Alexander 2013-2015
- *
- * 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:
- *
- * 1. The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * 2. If the Software is incorporated into a build system that allows
- * selection among a list of target devices, then similar target
- * devices manufactured by PJRC.COM must be included in the list of
- * target devices and selectable in the same manner.
- *
- * 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.
- */
-
- // ----- Includes -----
-
- // Compiler Includes
- #include <string.h> // for memcpy()
-
- // Project Includes
- #include <Lib/OutputLib.h>
- #include <print.h>
-
- // Local Includes
- #include "usb_dev.h"
- #include "usb_keyboard.h"
-
-
-
- // ----- Defines -----
-
- // Maximum number of transmit packets to queue so we don't starve other endpoints for memory
- #define TX_PACKET_LIMIT 4
-
- // When the PC isn't listening, how long do we wait before discarding data?
- #define TX_TIMEOUT_MSEC 50
-
- #if F_CPU == 168000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1100)
- #elif F_CPU == 144000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 932)
- #elif F_CPU == 120000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 764)
- #elif F_CPU == 96000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 596)
- #elif F_CPU == 72000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 512)
- #elif F_CPU == 48000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 428)
- #elif F_CPU == 24000000
- #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 262)
- #endif
-
-
-
- // ----- Variables -----
-
- static uint8_t transmit_previous_timeout = 0;
-
-
-
- // ----- Functions -----
-
- // send the contents of keyboard_keys and keyboard_modifier_keys
- void usb_keyboard_send()
- {
- uint32_t wait_count = 0;
- usb_packet_t *tx_packet;
-
- // Wait till ready
- while ( 1 )
- {
- if ( !usb_configuration )
- {
- erro_print("USB not configured...");
- return;
- }
-
- if ( USBKeys_Protocol == 0 ) // Boot Mode
- {
- if ( usb_tx_packet_count( KEYBOARD_ENDPOINT ) < TX_PACKET_LIMIT )
- {
- tx_packet = usb_malloc();
- if ( tx_packet )
- break;
- }
- }
- else if ( USBKeys_Protocol == 1 ) // NKRO Mode
- {
- if ( usb_tx_packet_count( NKRO_KEYBOARD_ENDPOINT ) < TX_PACKET_LIMIT )
- {
- tx_packet = usb_malloc();
- if ( tx_packet )
- break;
- }
- }
- else if ( USBKeys_Changed &
- ( USBKeyChangeState_System | USBKeyChangeState_Consumer )
- )
- {
- if ( usb_tx_packet_count( SYS_CTRL_ENDPOINT ) < TX_PACKET_LIMIT )
- {
- tx_packet = usb_malloc();
- if ( tx_packet )
- break;
- }
- }
-
- if ( ++wait_count > TX_TIMEOUT || transmit_previous_timeout )
- {
- transmit_previous_timeout = 1;
- warn_print("USB Transmit Timeout...");
- USBKeys_Changed = USBKeyChangeState_None; // Indicate packet lost
- return;
- }
- yield();
- }
-
- // Pointer to USB tx packet buffer
- uint8_t *tx_buf = tx_packet->buf;
-
- // Check system control keys
- if ( USBKeys_Changed & USBKeyChangeState_System )
- {
- if ( Output_DebugMode )
- {
- print("SysCtrl[");
- printHex_op( USBKeys_SysCtrl, 2 );
- print( "] " NL );
- }
-
- *tx_buf++ = 0x02; // ID
- *tx_buf = USBKeys_SysCtrl;
- tx_packet->len = 2;
-
- // Send USB Packet
- usb_tx( SYS_CTRL_ENDPOINT, tx_packet );
- USBKeys_Changed &= ~USBKeyChangeState_System; // Mark sent
- return;
- }
-
- // Check consumer control keys
- if ( USBKeys_Changed & USBKeyChangeState_Consumer )
- {
- if ( Output_DebugMode )
- {
- print("ConsCtrl[");
- printHex_op( USBKeys_ConsCtrl, 2 );
- print( "] " NL );
- }
-
- *tx_buf++ = 0x03; // ID
- *tx_buf++ = (uint8_t)(USBKeys_ConsCtrl & 0x00FF);
- *tx_buf = (uint8_t)(USBKeys_ConsCtrl >> 8);
- tx_packet->len = 3;
-
- // Send USB Packet
- usb_tx( SYS_CTRL_ENDPOINT, tx_packet );
- USBKeys_Changed &= ~USBKeyChangeState_Consumer; // Mark sent
- return;
- }
-
- switch ( USBKeys_Protocol )
- {
- // Send boot keyboard interrupt packet(s)
- case 0:
- // USB Boot Mode debug output
- if ( Output_DebugMode )
- {
- dbug_msg("Boot USB: ");
- printHex_op( USBKeys_Modifiers, 2 );
- print(" ");
- printHex( 0 );
- print(" ");
- printHex_op( USBKeys_Keys[0], 2 );
- printHex_op( USBKeys_Keys[1], 2 );
- printHex_op( USBKeys_Keys[2], 2 );
- printHex_op( USBKeys_Keys[3], 2 );
- printHex_op( USBKeys_Keys[4], 2 );
- printHex_op( USBKeys_Keys[5], 2 );
- print( NL );
- }
-
- // Boot Mode
- *tx_buf++ = USBKeys_Modifiers;
- *tx_buf++ = 0;
- memcpy( tx_buf, USBKeys_Keys, USB_BOOT_MAX_KEYS );
- tx_packet->len = 8;
-
- // Send USB Packet
- usb_tx( KEYBOARD_ENDPOINT, tx_packet );
- USBKeys_Changed = USBKeyChangeState_None;
- break;
-
- // Send NKRO keyboard interrupts packet(s)
- case 1:
- if ( Output_DebugMode )
- {
- dbug_msg("NKRO USB: ");
- }
-
- // Standard HID Keyboard
- if ( USBKeys_Changed )
- {
- // USB NKRO Debug output
- if ( Output_DebugMode )
- {
- printHex_op( USBKeys_Modifiers, 2 );
- print(" ");
- for ( uint8_t c = 0; c < 6; c++ )
- printHex_op( USBKeys_Keys[ c ], 2 );
- print(" ");
- for ( uint8_t c = 6; c < 20; c++ )
- printHex_op( USBKeys_Keys[ c ], 2 );
- print(" ");
- printHex_op( USBKeys_Keys[20], 2 );
- print(" ");
- for ( uint8_t c = 21; c < 27; c++ )
- printHex_op( USBKeys_Keys[ c ], 2 );
- print( NL );
- }
-
- tx_packet->len = 0;
-
- // Modifiers
- *tx_buf++ = 0x01; // ID
- *tx_buf++ = USBKeys_Modifiers;
- tx_packet->len += 2;
-
- // 4-49 (first 6 bytes)
- memcpy( tx_buf, USBKeys_Keys, 6 );
- tx_buf += 6;
- tx_packet->len += 6;
-
- // 51-155 (Middle 14 bytes)
- memcpy( tx_buf, USBKeys_Keys + 6, 14 );
- tx_buf += 14;
- tx_packet->len += 14;
-
- // 157-164 (Next byte)
- memcpy( tx_buf, USBKeys_Keys + 20, 1 );
- tx_buf += 1;
- tx_packet->len += 1;
-
- // 176-221 (last 6 bytes)
- memcpy( tx_buf, USBKeys_Keys + 21, 6 );
- tx_packet->len += 6;
-
- // Send USB Packet
- usb_tx( NKRO_KEYBOARD_ENDPOINT, tx_packet );
- USBKeys_Changed = USBKeyChangeState_None; // Mark sent
- }
-
- break;
- }
-
- return;
- }
-
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