137 lines
2.4 KiB
C
137 lines
2.4 KiB
C
#include "../config.h"
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#include "../makros.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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#define ROWPORT PORTC
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#define ROWDDR DDRC
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#define COLPORT PORTA
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#define COLDDR DDRA
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#define MYPORT PORTC
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#define MYPORT2 PORTA
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#define SHOW 0
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#define DATA 1
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#define PIN_ENABLE 0
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#define PIN_DATA 1
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unsigned char pixmap[NUMPLANE][NUM_ROWS][LINEBYTES];
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inline void rowshow(unsigned char row, unsigned char plane) {
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unsigned char p, n, m, outb, clkmsk;
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clkmsk = 0x80 >> row;
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// if (row==4)
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{
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MYPORT &= ~(1 << PIN_ENABLE);
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// MYPORT |= (1 << PIN_ENABLE); //hide
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// MYPORT |= (1 << PIN_ENABLE); //hide
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for (n = 7; n < 8; n--) {
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outb = pixmap[plane][row][n];
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p = 0x80;
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for (m = 0; m < 8; m++) {
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if (outb & p)
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// MYPORT |= (1 << PIN_DATA);
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MYPORT &= ~(1 << PIN_DATA);
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else
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// MYPORT &= ~(1 << PIN_DATA); //off
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MYPORT |= (1 << PIN_DATA);
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MYPORT2 &= ~clkmsk;
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MYPORT2 |= clkmsk;
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p >>= 1;
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}
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}
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}
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MYPORT |= (1 << PIN_ENABLE);
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//MYPORT &= ~(1 << PIN_ENABLE) ;
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// for(n=0;n<250;n++) asm ("nop");
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}
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ISR(TIMER0_COMP_vect) {
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static unsigned char plane = 0;
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unsigned char row = 0;
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switch (plane) {
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case 0:
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OCR0 = 60;
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break;
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case 1:
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OCR0 = 120;
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break;
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case 2:
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OCR0 = 160;
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break;
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// case 3:
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// OCR0 = 24;
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// break;
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// case 4:
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// OCR0 = 48;
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// break;
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}
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for (row = 0; row < NUM_ROWS; row++) {
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rowshow(row, plane);
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}
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if (++plane == NUMPLANE)
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plane = 0;
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wdt_reset();
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}
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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 = 0x08 | 0x04; // CTC Mode, clk/256 MH: slower 5 instead of 4
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TCNT0 = 0; // reset timer
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OCR0 = 0x30; // compare with this value 0x30
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TIMSK = 0x02; // compare match Interrupt on
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}
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void timer0_off() {
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cli();
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MYPORT &= ~(1 << PIN_ENABLE);
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// MYPORT |= (1 << PIN_ENABLE); // hide
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// COLPORT |= (1<<PIN_LINE_EN); // blank display
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// PORTD |= 0x01; // blank display
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TCCR0 = 0x00;
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sei();
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}
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void watchdog_enable() {
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wdt_reset();
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wdt_enable(0x00); // 17ms
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}
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void borg_hw_init() {
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//COLPORT |= (1<<PIN_CLK) | (1<<PIN_LINE_EN);
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//COLDDR |= (1<<PIN_CLK) | (1<<PIN_LINE_EN) | (1<<PIN_DATA);
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//ROWDDR |= 0x07;
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DDRA = 0xFF;
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DDRC = 0xFF;
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watchdog_enable();
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timer0_on();
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}
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