From d6e0f74e24440e8a6b2ab2027c4d47fb4b21ce8b Mon Sep 17 00:00:00 2001 From: Hans-Gert Dahmen Date: Mon, 21 May 2012 23:06:33 +0000 Subject: [PATCH] fancy new display driver --- borg_hw/borg_hw.h | 6 +- borg_hw/borg_hw_borg16_hgmod.c | 223 ++++++++++++++++++++------------- borg_hw/config_borg16_hgmod.in | 3 - 3 files changed, 144 insertions(+), 88 deletions(-) diff --git a/borg_hw/borg_hw.h b/borg_hw/borg_hw.h index 7a71fbc..69971cd 100644 --- a/borg_hw/borg_hw.h +++ b/borg_hw/borg_hw.h @@ -5,7 +5,11 @@ #define LINEBYTES (((NUM_COLS-1)/8)+1) -extern unsigned char pixmap[NUMPLANE][NUM_ROWS][LINEBYTES]; +#ifndef BORG_FRAMEBUF + extern unsigned char pixmap[NUMPLANE][NUM_ROWS][LINEBYTES]; +#else /* BORG_FRAMEBUF */ + unsigned char framebuf[NUM_ROWS][NUM_COLS]; +#endif /* BORG_FRAMEBUF */ void watchdog_enable(); void borg_hw_init(); diff --git a/borg_hw/borg_hw_borg16_hgmod.c b/borg_hw/borg_hw_borg16_hgmod.c index 6631bb5..7d89f25 100644 --- a/borg_hw/borg_hw_borg16_hgmod.c +++ b/borg_hw/borg_hw_borg16_hgmod.c @@ -4,6 +4,7 @@ #include #include #include +#include #include "borg_hw.h" /* @@ -38,16 +39,18 @@ #define TIMER0_COMP_vect TIMER0_COMPA_vect #endif +//lookup table +uint16_t colormap[256] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,29,31,34,36,39,42,45,48,51,55,58,62,65,69,73,77,81,85,90,94,99,103,108,113,118,123,129,134,140,145,151,157,163,169,176,182,188,195,202,209,216,223,230,238,245,253,261,269,277,285,293,302,310,319,328,337,346,355,365,374,384,394,404,414,424,434,445,455,466,477,488,499,510,522,533,545,557,569,581,593,606,618,631,644,657,670,683,696,710,723,737,751,765,779,794,808,823,838,853,868,883,898,914,930,945,961,978,994,1010,1027,1043,1060,1077,1094,1112,1129,1147,1164,1182,1200,1218,1237,1255,1274,1293,1311,1331,1350,1369,1389,1408,1428,1448,1468,1488,1509,1529,1550,1571,1592,1613,1635,1656,1678,1700,1721,1744,1766,1788,1811,1834,1856,1879,1903,1926,1949,1973,1997,2021,2045,2069,2094,2118,2143,2168,2193,2218,2244,2269,2295,2321,2347,2373,2399,2426,2452,2479,2506,2533,2560,2588,2615,2643,2671,2699,2727,2756,2784,2813,2842,2871,2900,2929,2959,2989,3018,3048,3079,3109,3139,3170,3201,3232,3263,3294,3326,3357,3389,3421,3453,3485,3518,3550,3583,3616,3649,3682,3716,3749,3783,3817,3851,3886,3920,3955,3989,4024,4059,4094}; + // buffer which holds the currently shown frame -unsigned char pixmap[NUMPLANE][NUM_ROWS][LINEBYTES]; +unsigned char framebuf[NUM_ROWS][NUM_COLS]; -// switch to next row -static void nextrow(uint8_t row) { - unsigned char i; - static unsigned char row = 0; +//row counter +static unsigned char row = 0; - //increment & wrap row counter - if (++row == NUM_ROWS) row = 0; +//switch to next row +static void nextrow() { + unsigned char i; // short delay loop, to ensure proper deactivation of the drivers for (i = 0; i < 10; i++) asm volatile("nop"); @@ -75,92 +78,114 @@ static void nextrow(uint8_t row) { ROWPORT |= (1 << PIN_CLK); ROWPORT &= ~(1 << PIN_CLK); } - - // another delay loop, to ensure that the drivers are ready - for (i = 0; i < 20; i++) asm volatile("nop"); -} - -// show a row -/* -static void rowshow(unsigned char row, unsigned char plane) { - // depending on the currently drawn plane, display the row for a specific - // amount of time - static unsigned char const ocr_table[] = {3, 4, 22}; - OCR0 = ocr_table[plane]; - - // output data of the current row to the column drivers - uint8_t tmp, tmp1; - row = (row>>1) + ((row & 0x01)?8:0 ); - tmp = pixmap[plane][row][0]; - tmp1 = pixmap[plane][row][1]; - -#ifdef REVERSE_COLS - tmp = (tmp >> 4) | (tmp << 4); - tmp = ((tmp & 0xcc) >> 2) | ((tmp & 0x33)<< 2); //0xcc = 11001100, 0x33 = 00110011 - tmp = ((tmp & 0xaa) >> 1) | ((tmp & 0x55)<< 1); //0xaa = 10101010, 0x55 = 1010101 - TLCPORT2 = tmp; - tmp = tmp1; - tmp = (tmp >> 4) | (tmp << 4); - tmp = ((tmp & 0xcc) >> 2) | ((tmp & 0x33) << 2); //0xcc = 11001100, 0x33 = 00110011 - tmp = ((tmp & 0xaa) >> 1) | ((tmp & 0x55) << 1); //0xaa = 10101010, 0x55 = 1010101 - TLCPORT1 = tmp; -#else - TLCPORT1 = tmp; - TLCPORT2 = tmp1; -#endif } -*/ //this int runs with multiples of half the frequency of timer 1, //meaning that new row data gets laoded every 2n pwm periods of the tlc ISR(TIMER0_COMP_vect ) { - uint8_t i, x; + uint8_t y, x, v; // reset watchdog wdt_reset(); + + //increment & wrap row counter + if (++row == NUM_ROWS) row = 0; - //sync to timer 1 - while(!(TIFR1 & _BV(OCF1A))); - + //shift pixmap as 12 bit words into device + for(y = 0; y < 16; y++) //16 x 12bit + { + //fetch msb + v = (colormap[framebuf[row][y]] >> 4) & 0xF0; + + //12 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //11 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //10 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //9 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //fetch lsb + v = (colormap[framebuf[row][y]]) & 0xFF; + + //8 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //7 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //6 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //5 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //4 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //3 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //2 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + + //1 + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= (v & 0x80) >> (7-TLC_PIN_SIN); + SCLK(); + v <<= 1; + } + //blank outputs of low-side (column) driver TLCPORT |= _BV(TLC_PIN_BLANK); - //disable timer 1 - TCCR1B &= ~_BV(CS10); - - // switch rows - nextrow(row); - - // output current row according to current plane - //rowshow(row, plane); - - //debug: load 100% duty cycle into column driver - for(i = 0; i < 16; i++) //16 x 12bit - { - //shift in 12 bit words - for(x = 0; x < 12; x++) - { - TLCPORT &= ~_BV(TLC_PIN_SIN); - TLCPORT |= ((uint8_t)((uint16_t)0xFFF >> x) & 1) << TLC_PIN_SIN; - SCLK(); - } - } + //switch rows + nextrow(); //latch data, disable blanking, enable and reset timers XLAT(); - TCNT1 = 0; - TIFR1 = _BV(OCF1A) - TLCPORT &= ~_BV(TLC_PIN_BLANK); - TCNT0 = 0; //be a little faster than timer 1 - TCCR1B |= _BV(CS10); // clk/1 -} - - -ISR(TIMER1_COMPA_vect) -{ - TLCPORT |= _BV(TLC_PIN_BLANK); TLCPORT &= ~_BV(TLC_PIN_BLANK); + + //reset timer + TCNT0 = 0; } @@ -200,20 +225,14 @@ static void timer0_on() { TCCR0A = 0x02; // CTC Mode TCCR0B = 0x04; // clk/256 TCNT0 = 0; // reset timer - OCR0 = 0xFF; // compare with this value + OCR0 = 16; // compare with this value TIMSK0 = 0x02; // compare match Interrupt on #else TCCR0 = 0x0C; // CTC Mode, clk/256 TCNT0 = 0; // reset timer - OCR0 = 0xFF; // compare with this value + OCR0 = 16; // compare with this value TIMSK = 0x02; // compare match Interrupt on #endif - - //setup timer1 also (for blanking pulse) - TCCR1A = 0x00; - TCCR0B = _BV(WGM12); // CTC Mode - OCR1A = 8192; // top value - TIMSK1 = _BV(OCIE1A); // compare match interrupt on } @@ -251,6 +270,39 @@ void tlc5940_init() SCLK(); } +void test_tlc() +{ + uint8_t i, x; + + while(1) + { + //debug: load 100% duty cycle into column driver + for(i = 0; i < 16; i++) //16 x 12bit + { + //shift in 12 bit words + for(x = 0; x < 12; x++) + { + TLCPORT &= ~_BV(TLC_PIN_SIN); + TLCPORT |= 1<< TLC_PIN_SIN; + SCLK(); + } + } + + //blank outputs of low-side (column) driver + TLCPORT |= _BV(TLC_PIN_BLANK); + + //rowswitch + nextrow(); + + //latch data, disable blanking + XLAT(); + TLCPORT &= ~_BV(TLC_PIN_BLANK); + + //delay 4096 gsclocks (256) + _delay_us(254); + } +} + void borg_hw_init() { //init column driver @@ -261,6 +313,9 @@ void borg_hw_init() { // reset shift registers for the rows ROWPORT = 0; + + //test tlc chip + //test_tlc(); //activate the activator timer0_on(); diff --git a/borg_hw/config_borg16_hgmod.in b/borg_hw/config_borg16_hgmod.in index 10c3319..33334aa 100644 --- a/borg_hw/config_borg16_hgmod.in +++ b/borg_hw/config_borg16_hgmod.in @@ -1,9 +1,6 @@ mainmenu_option next_comment comment "Borg16 HGMod port setup" -#define COLPORT PORTC -#define COLDDR DDRC - choice 'TLC5940 Control Port' \ "PORTA PORTA \ PORTB PORTB \