1 /* Copyright (C) 2011 by Jacob Alexander
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 // ----- Includes -----
25 #include <util/delay.h>
26 #include <avr/interrupt.h>
31 #include <scan_loop.h>
43 // ----- Variables -----
45 // Keeps track of the sequence used to reflash the teensy in software
46 static uint8_t Bootloader_ConditionSequence[] = {1,16,6,11};
47 uint8_t Bootloader_ConditionState = 0;
48 uint8_t Bootloader_NextPositionReady = 1;
49 uint8_t Bootloader_KeyDetected = 0;
53 // ----- Functions -----
55 inline void macro_finishedWithBuffer(void)
58 // Boot loader sequence state handler
59 switch ( KeyIndex_BufferUsed )
61 // The next bootloader key can now be pressed, if there were no keys processed
63 Bootloader_NextPositionReady = 1;
65 // If keys were detected, and it wasn't in the sequence (or there was multiple keys detected), start bootloader sequence over
66 // This case purposely falls through
68 if ( Bootloader_KeyDetected )
71 Bootloader_ConditionState = 0;
75 Bootloader_KeyDetected = 0;
79 void jumpToBootloader(void)
82 // disable watchdog, if enabled
83 // disable all peripherals
85 USBCON = (1<<FRZCLK); // disable USB
89 #if defined(__AVR_AT90USB162__) // Teensy 1.0
90 EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
91 TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
92 DDRB = 0; DDRC = 0; DDRD = 0;
93 PORTB = 0; PORTC = 0; PORTD = 0;
94 asm volatile("jmp 0x3E00");
95 #elif defined(__AVR_ATmega32U4__) // Teensy 2.0
96 EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
97 TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0; UCSR1B = 0; TWCR = 0;
98 DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; TWCR = 0;
99 PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
100 asm volatile("jmp 0x7E00");
101 #elif defined(__AVR_AT90USB646__) // Teensy++ 1.0
102 EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
103 TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
104 DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
105 PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
106 asm volatile("jmp 0xFC00");
107 #elif defined(__AVR_AT90USB1286__) // Teensy++ 2.0
108 EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
109 TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
110 DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
111 PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
112 asm volatile("jmp 0x1FC00");
116 // Given a sampling array, and the current number of detected keypress
117 // Add as many keypresses from the sampling array to the USB key send array as possible.
119 inline void keyPressDetection( uint8_t *keys, uint8_t numberOfKeys, uint8_t *modifiers, uint8_t numberOfModifiers, uint8_t *map )
121 uint8_t Bootloader_KeyDetected = 0;
122 uint8_t processed_keys = 0;
124 // Parse the detection array starting from 1 (all keys are purposefully mapped from 1 -> total as per typical PCB labels)
125 for ( uint8_t key = 0; key < numberOfKeys + 1; key++ )
127 if ( keys[key] & (1 << 7) )
131 // Display the detected scancode
133 int8ToStr( key, tmpStr );
134 dPrintStrs( tmpStr, " " );
136 // Is this a bootloader sequence key?
137 if ( !Bootloader_KeyDetected
138 && Bootloader_NextPositionReady
139 && key == Bootloader_ConditionSequence[Bootloader_ConditionState] )
141 Bootloader_KeyDetected = 1;
142 Bootloader_NextPositionReady = 0;
143 Bootloader_ConditionState++;
145 else if ( Bootloader_ConditionState > 0 && key == Bootloader_ConditionSequence[Bootloader_ConditionState - 1] )
147 Bootloader_KeyDetected = 1;
150 // Determine if the key is a modifier
151 uint8_t modFound = 0;
152 for ( uint8_t mod = 0; mod < numberOfModifiers; mod++ ) {
154 if ( modifiers[mod] == key ) {
155 USBKeys_Modifiers |= map[key];
161 // Modifier, already done this loop
166 if ( USBKeys_Sent >= USBKeys_MaxSize )
168 info_print("USB Key limit reached");
173 // Allow ignoring keys with 0's
175 USBKeys_Array[USBKeys_Sent++] = map[key];
179 // Boot loader sequence state handler
180 switch ( processed_keys )
182 // The next bootloader key can now be pressed, if there were no keys processed
184 Bootloader_NextPositionReady = 1;
186 // If keys were detected, and it wasn't in the sequence (or there was multiple keys detected), start bootloader sequence over
187 // This case purposely falls through
189 if ( Bootloader_KeyDetected )
192 Bootloader_ConditionState = 0;
196 // Add debug separator if keys sent via USB
197 if ( USBKeys_Sent > 0 )
198 print("\033[1;32m|\033[0m\n");
202 // Scancode Macro Detection
203 int scancodeMacro( uint8_t scanCode )
206 if ( scanCode == 0x7A )
208 scan_resetKeyboard();
212 scan_sendData( scanCode );
214 scan_sendData( 0x80 | scanCode );
220 // Is this a bootloader sequence key?
221 if ( !Bootloader_KeyDetected
222 && Bootloader_NextPositionReady
223 && scanCode == Bootloader_ConditionSequence[Bootloader_ConditionState] )
225 Bootloader_KeyDetected = 1;
226 Bootloader_NextPositionReady = 0;
227 Bootloader_ConditionState++;
228 erro_dPrint("detect");
230 else if ( Bootloader_ConditionState > 0 && scanCode == Bootloader_ConditionSequence[Bootloader_ConditionState - 1] )
232 Bootloader_KeyDetected = 0;
233 Bootloader_NextPositionReady = 1;
234 erro_dPrint("detect-again!");
239 Bootloader_KeyDetected = 0;
240 Bootloader_NextPositionReady = 1;
241 Bootloader_ConditionState = 0;
249 uint8_t sendCode = 0;
251 // USBCode Macro Detection
252 int usbcodeMacro( uint8_t usbCode )
255 // Keyboard Input Test Macro
260 scan_sendData( 0x90 );
261 scan_sendData( sendCode );
266 scan_sendData( 0x90 );
267 scan_sendData( sendCode );
273 scan_sendData( 0x90 );
274 scan_sendData( sendCode );
288 // Given a list of keypresses, translate into the USB key codes
289 // The buffer is cleared after running
290 // If the buffer doesn't fit into the USB send array, the extra keys are dropped
291 void keyPressBufferRead( uint8_t *modifiers, uint8_t numberOfModifiers, uint8_t *map )
293 // Loop through input buffer
294 for ( uint8_t index = 0; index < KeyIndex_BufferUsed; index++ )
296 // Get the keycode from the buffer
297 uint8_t key = KeyIndex_Buffer[index];
299 // Check key for special usages using the scancode
300 // If non-zero return, ignore normal processing of the scancode
301 if ( scancodeMacro( key ) )
304 // Check key for special usages using the usbcode
305 // If non-zero return, ignore normal processing of the usbcode
306 if ( usbcodeMacro( map[key] ) )
309 // Determine if the key is a modifier
310 uint8_t modFound = 0;
311 for ( uint8_t mod = 0; mod < numberOfModifiers; mod++ ) {
313 if ( modifiers[mod] == key ) {
314 USBKeys_Modifiers |= map[key];
320 // Modifier, already done this loop
325 if ( USBKeys_Sent >= USBKeys_MaxSize )
327 info_print("USB Key limit reached");
332 // Allow ignoring keys with 0's
335 USBKeys_Array[USBKeys_Sent++] = map[key];
339 // Key was not mapped
340 // TODO Add dead key map
342 hexToStr( key, tmpStr );
343 erro_dPrint( "Key not mapped... - ", tmpStr );
348 // Signal Macro processor that all of the buffered keys have been processed
349 macro_finishedWithBuffer();
351 // Signal buffer that we've used it
352 scan_finishedWithBuffer();
355 inline void process_macros(void)
357 // Online process macros once (if some were found), until the next USB send
358 if ( USBKeys_Sent != 0 )
361 // Query the input buffer for keypresses
362 keyPressBufferRead( MODIFIER_MASK, sizeof(MODIFIER_MASK), KEYINDEX_MASK );
364 // Check for bootloader condition
365 if ( Bootloader_ConditionState == sizeof( Bootloader_ConditionSequence ) )