124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
/*
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* Authors (alphabetical order)
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* - Bertrand Songis <bsongis@gmail.com>
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* - Bryan J. Rentoul (Gruvin) <gruvin@gmail.com>
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* - Cameron Weeks <th9xer@gmail.com>
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* - Erez Raviv
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* - Jean-Pierre Parisy
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* - Karl Szmutny <shadow@privy.de>
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* - Michael Blandford
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* - Michal Hlavinka
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* - Pat Mackenzie
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* - Philip Moss
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* - Rob Thomson
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* - Romolo Manfredini <romolo.manfredini@gmail.com>
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* - Thomas Husterer
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*
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* open9x is based on code named
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* gruvin9x by Bryan J. Rentoul: http://code.google.com/p/gruvin9x/,
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* er9x by Erez Raviv: http://code.google.com/p/er9x/,
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* and the original (and ongoing) project by
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* Thomas Husterer, th9x: http://code.google.com/p/th9x/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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// Bits in VoiceLatch
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#define VOICE_CLOCK_BIT 0x01
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#define VOICE_DATA_BIT 0x02
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#define BACKLIGHT_BIT 0x04
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#define SPARE_BIT 0x08
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#define VOICE_Q_LENGTH 16
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// Voice states
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#define V_STARTUP 0
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#define V_IDLE 1
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#define V_CLOCKING 2
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#define V_WAIT_BUSY_ON 3
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#define V_WAIT_BUSY_OFF 4
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#define V_WAIT_BUSY_DELAY 5
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#define PROMPT_SYSTEM_BASE 230
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#define PROMPT_CUSTOM_BASE 256
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struct t_voice
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{
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uint8_t Backlight ;
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uint8_t VoiceLatch ;
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uint8_t VoiceCounter ;
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uint8_t VoiceTimer ;
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uint16_t VoiceSerial ;
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uint8_t VoiceState ;
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uint8_t VoiceShift ;
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uint8_t VoiceQueueCount ;
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uint8_t VoiceQueueInIndex ;
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uint8_t VoiceQueueOutIndex ;
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uint8_t VoiceQueue[VOICE_Q_LENGTH] ;
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void voice_process( void ) ;
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};
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extern void pushCustomPrompt( uint8_t value );
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extern void pushPrompt( uint8_t value );
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extern struct t_voice *voiceaddress( void ) ;
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extern struct t_voice Voice ;
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inline bool isPlaying()
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{
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#if defined(SIMU)
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return false;
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#else
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return Voice.VoiceState != V_IDLE;
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#endif
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}
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/*
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* Handle the Voice output
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* Check for LcdLocked (in interrupt), and voice_enabled
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*/
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#define VOICE_DRIVER() \
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if ( LcdLock == 0 ) /* LCD not in use */ \
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{ \
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struct t_voice *vptr; \
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vptr = voiceaddress(); \
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if ( vptr->VoiceState == V_CLOCKING ) \
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{ \
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if ( vptr->VoiceTimer ) \
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{ \
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vptr->VoiceTimer -= 1; \
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} \
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else \
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{ \
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PORTB |= (1<<OUT_B_LIGHT); /* Latch clock high */ \
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if ( vptr->VoiceCounter & 1 ) \
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{ \
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vptr->VoiceLatch &= ~VOICE_DATA_BIT; \
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if ( vptr->VoiceSerial & 0x8000 ) \
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{ \
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vptr->VoiceLatch |= VOICE_DATA_BIT; \
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} \
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vptr->VoiceSerial <<= 1; \
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} \
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vptr->VoiceLatch ^= VOICE_CLOCK_BIT; \
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PORTA_LCD_DAT = vptr->VoiceLatch; /* Latch data set */ \
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PORTB &= ~(1<<OUT_B_LIGHT); /* Latch clock low */ \
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if ( --vptr->VoiceCounter == 0 ) \
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{ \
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vptr->VoiceState = V_WAIT_BUSY_ON; \
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vptr->VoiceTimer = 5; /* 50 mS */ \
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} \
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} \
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} \
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}
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