tixiv
16 years ago
7 changed files with 243 additions and 4 deletions
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#include"../autoconf.h" |
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#include <avr/interrupt.h> |
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#include <avr/io.h> |
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#include <avr/wdt.h> |
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#include "borg_hw.h" |
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/* Steckerbelegung Flachbandkabel am Panel
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* (die Nummerierung ist in wirklichkeit umgekehrt) |
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* |
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* 1-3 GND |
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* 4 +5V für Logic |
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* 5-8 +12V |
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* 9-10 GND |
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* 11 CP3 |
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* 12 CP2 |
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* 13 CP1 |
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* 14 /show |
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* 15 CP4 |
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* 16 /EO3 |
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* 17-18 GND |
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* 19-26 D0-D7 |
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* |
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* Und nochmal richtigrum: |
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* 1 D7 |
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* 2 D6 |
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* 3 D5 |
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* 4 D4 |
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* 5 D3 |
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* 6 D2 |
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* 7 D1 |
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* 8 D0 |
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* 9 GND |
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* 10 GND |
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* 11 /EO3 |
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* 12 CP4 |
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* 13 /show |
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* 14 CP1 |
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* 15 CP2 |
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* 16 CP3 |
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* 17 GND |
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* 18 GND |
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* 19 +12V |
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* 20 +12V |
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* 21 +12V |
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* 22 +12V |
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* 23 +5V |
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* 24 GND |
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* 25 GND |
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* 26 GND |
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* |
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* Es werden 4 40374 Latches benutzt. Nr. 1,2 und 4 treiben vom Datenbus |
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* in Richtung Panel, Nr. 3 treibt von den Tastenausgängen auf den Datenbus. |
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* Die EOs von 1,2 und 4 liegen fest auf GND. |
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* |
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* Die LEDs sind in einer 12*16 Matrix angeordnet |
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* Die Werte für die LED spalten Werden mit CP1 und CP2 in die |
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* Latches übernommen (insgesammt 16 Spalten) |
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* Die Nummer der Zeile wird beim löschen von /show übernommen. |
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* |
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* Die Tasten sind in einer 8*8 Matrix angeordnet. |
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* Über Latch 4 werden die Zeilen einzeln auf high gesetzt, über |
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* Latch 3 können dann die Spalten gelesen werden. |
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* |
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*/ |
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//Datenport für das Panel
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#define COLPORT PORTC |
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#define COLDDR DDRC |
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#define COLPIN PINC |
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#define CTRLPORT PORTD |
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#define CTRLDDR DDRD |
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// PINs on CTRLPORT
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#define PIN_EO3 PD7 |
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#define PIN_CP4 PD2 |
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#define PIN_SHOW PD3 |
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#define PIN_CP1 PD4 |
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#define PIN_CP2 PD5 |
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#define PIN_CP3 PD6 |
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//Der Puffer, in dem das aktuelle Bild gespeichert wird
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unsigned char pixmap[NUMPLANE][NUM_ROWS][LINEBYTES]; |
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volatile uint8_t keys[8]; |
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inline void busywait() { |
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//unsigned char i;
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//for(i=0;i<20;i++){
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// asm volatile("nop");
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//}
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} |
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//Eine Zeile anzeigen
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inline void rowshow(unsigned char row, unsigned char plane){ |
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CTRLPORT |= (1<<PIN_SHOW);//blank
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COLPORT = pixmap[plane][row][0]; |
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busywait(); |
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CTRLPORT |= (1<<PIN_CP1); |
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busywait(); |
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CTRLPORT &= ~(1<<PIN_CP1); |
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busywait(); |
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COLPORT = pixmap[plane][row][1]; |
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busywait(); |
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CTRLPORT |= (1<<PIN_CP2); |
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busywait(); |
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CTRLPORT &= ~(1<<PIN_CP2); |
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busywait(); |
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COLPORT = row; |
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busywait(); |
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CTRLPORT &= ~(1<<PIN_SHOW); |
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} |
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inline void checkkeys(uint8_t row){ |
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static uint8_t mask; |
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if(row == 0){ |
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mask = 1; |
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}else{ |
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//read keyboard cols into latch
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COLDDR = 0; |
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CTRLPORT &= ~(1<<PIN_EO3); |
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CTRLPORT |= (1<<PIN_CP3); |
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busywait(); |
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CTRLPORT &= ~(1<<PIN_CP3); |
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busywait(); |
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keys[row-1] = COLPIN; |
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CTRLPORT |= (1<<PIN_EO3); |
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busywait(); |
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COLDDR = 0xFF; |
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} |
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COLPORT = mask; |
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mask <<= 1; |
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busywait(); |
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CTRLPORT |= (1<<PIN_CP4); |
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busywait(); |
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CTRLPORT &= ~(1<<PIN_CP4); |
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} |
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//Dieser Interrupt wird je nach Ebene mit 50kHz 31,25kHz oder 12,5kHz ausgeführt
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SIGNAL(SIG_OUTPUT_COMPARE0) |
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{ |
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static unsigned char plane = 0; |
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static unsigned char row = 0; |
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//Watchdog zurücksetzen
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wdt_reset(); |
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//Die aktuelle Zeile in der aktuellen Ebene ausgeben
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rowshow(row, plane); |
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if( (plane == 2) && (row<9) ) checkkeys(row); |
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//Zeile und Ebene inkrementieren
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if(++row == NUM_ROWS){ |
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row = 0; |
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if(++plane==NUMPLANE) plane=0; |
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switch(plane){ |
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case 0: |
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OCR0 = 5; |
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break; |
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case 1: |
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OCR0 = 12; |
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break; |
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case 2: |
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OCR0 = 20; |
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break; |
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} |
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} |
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} |
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void timer0_off(){ |
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cli(); |
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TCCR0 = 0x00; |
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sei(); |
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} |
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// Den Timer, der denn Interrupt auslöst, initialisieren
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void timer0_on(){ |
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/* TCCR0: FOC0 WGM00 COM01 COM00 WGM01 CS02 CS01 CS00
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CS02 CS01 CS00 |
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0 0 0 stop |
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0 0 1 clk |
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0 1 0 clk/8 |
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0 1 1 clk/64 |
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1 0 0 clk/256 |
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1 0 1 clk/1024 |
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*/ |
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TCCR0 = 0x0C; // CTC Mode, clk/64
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TCNT0 = 0; // reset timer
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OCR0 = 20; // Compare with this value
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TIMSK = 0x02; // Compare match Interrupt on
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} |
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void borg_hw_init(){ |
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//Pins am Zeilenport auf Ausgang
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CTRLPORT |= (1<<PIN_EO3)|(1<<PIN_SHOW); |
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CTRLDDR |= (1<<PIN_EO3) | (1<<PIN_CP4) | (1<<PIN_SHOW) | (1<<PIN_CP1) | (1<<PIN_CP2) | (1<<PIN_CP3); |
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//Alle Spalten erstmal aus
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//Spalten Ports auf Ausgang
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COLDDR = 0xFF; |
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COLPORT = 0x00; |
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timer0_on(); |
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//Watchdog Timer aktivieren
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wdt_reset(); |
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wdt_enable(0x00); // 17ms Watchdog
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} |
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@ -0,0 +1,6 @@ |
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mainmenu_option next_comment |
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comment "Borg-mini port setup" |
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endmenu |
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