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some improvements

This commit is contained in:
Hans-Gert Dahmen 2011-12-21 06:47:22 +00:00
parent 6325170d1c
commit eaa7b8d715
1 changed files with 51 additions and 25 deletions
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76
borg_hw/borg_hw_borg16_hgmod.c
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@ -19,17 +19,17 @@
#define TLC_PIN_DCPRG 4
#define TLC_PIN_XERR 6
#define COLDDR DDR(COLPORT)
#define COLDDR DDR(TLCPORT)
#define ROWDDR DDR(ROWPORT)
#define SCLK() { \
COLPORT |= _BV(TLC_PIN_SCLK); \
COLPORT &= ~_BV(TLC_PIN_SCLK); \
TLCPORT |= _BV(TLC_PIN_SCLK); \
TLCPORT &= ~_BV(TLC_PIN_SCLK); \
}
#define XLAT() { \
COLPORT |= _BV(TLC_PIN_XLAT); \
COLPORT &= ~_BV(TLC_PIN_XLAT); \
TLCPORT |= _BV(TLC_PIN_XLAT); \
TLCPORT &= ~_BV(TLC_PIN_XLAT); \
}
/* more ifdef magic :-( */
@ -46,9 +46,6 @@ static void nextrow(uint8_t row) {
unsigned char i;
static unsigned char row = 0;
//blank outputs of low-side (column) driver
COLPORT |= _BV(TLC_PIN_BLANK);
//increment & wrap row counter
if (++row == NUM_ROWS) row = 0;
@ -101,15 +98,15 @@ static void rowshow(unsigned char row, unsigned char plane) {
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
COLPORT2 = tmp;
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
COLPORT1 = tmp;
TLCPORT1 = tmp;
#else
COLPORT1 = tmp;
COLPORT2 = tmp1;
TLCPORT1 = tmp;
TLCPORT2 = tmp1;
#endif
}
*/
@ -117,12 +114,21 @@ static void rowshow(unsigned char row, unsigned char plane) {
// depending on the plane this interrupt triggers at 50 kHz, 31.25 kHz or
// 12.5 kHz
SIGNAL(SIG_OUTPUT_COMPARE0) {
ISR(TIMER0_COMP_vect ) {
uint8_t i, x;
// reset watchdog
wdt_reset();
//sync to timer 1
while(!(TIFR1 & _BV(OCF1A)));
//blank outputs of low-side (column) driver
TLCPORT |= _BV(TLC_PIN_BLANK);
//disable timer 1
TCCR1B &= ~_BV(CS10);
// switch rows
nextrow(row);
@ -135,22 +141,33 @@ SIGNAL(SIG_OUTPUT_COMPARE0) {
//shift in 12 bit words
for(x = 0; x < 12; x++)
{
COLPORT &= ~_BV(TLC_PIN_SIN);
COLPORT |= ((uint8_t)((uint16_t)0xFFF >> x) & 1) << TLC_PIN_SIN;
TLCPORT &= ~_BV(TLC_PIN_SIN);
TLCPORT |= ((uint8_t)((uint16_t)0xFFF >> x) & 1) << TLC_PIN_SIN;
SCLK();
}
}
//latch data and disable blanking
//latch data, disable blanking, enable and reset timers
XLAT();
COLPORT &= ~_BV(TLC_PIN_BLANK);
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);
}
void timer0_off() {
cli();
COLPORT = 0;
TLCPORT = 0;
ROWPORT = 0;
#ifdef __AVR_ATmega644P__
@ -160,11 +177,14 @@ void timer0_off() {
TCCR0 = 0x00;
#endif
//disable timer 1 also
TCCR1B &= ~_BV(CS10);
sei();
}
// initialize timer which triggers the interrupt
// initialize timers which trigger the interrupts
static void timer0_on() {
/* TCCR0: FOC0 WGM00 COM01 COM00 WGM01 CS02 CS01 CS00
* CS02 CS01 CS00
@ -180,14 +200,20 @@ static void timer0_on() {
TCCR0A = 0x02; // CTC Mode
TCCR0B = 0x04; // clk/256
TCNT0 = 0; // reset timer
OCR0 = 20; // compare with this value
OCR0 = 0xFF; // compare with this value
TIMSK0 = 0x02; // compare match Interrupt on
#else
TCCR0 = 0x0C; // CTC Mode, clk/256
TCNT0 = 0; // reset timer
OCR0 = 20; // compare with this value
OCR0 = 0xFF; // 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
}
@ -206,18 +232,18 @@ void tlc5940_init()
//set blank flag (disable led-outputs)
//dcprog is high -> use values from dc register
//vprg is high -> dot correction mode mode
COLPORT = _BV(TLC_PIN_XERR) | _BV(TLC_PIN_BLANK) | _BV(TLC_PIN_DCPRG) | _BV(TLC_PIN_VPRG);
TLCPORT = _BV(TLC_PIN_XERR) | _BV(TLC_PIN_BLANK) | _BV(TLC_PIN_DCPRG) | _BV(TLC_PIN_VPRG);
//set max power (6bit * 16 LEDs)
COLPORT |= _BV(TLC_PIN_SIN);
TLCPORT |= _BV(TLC_PIN_SIN);
for(i = 0; i < 96; i++) SCLK();
XLAT();
//switch to grayscale mode
COLPORT &= ~_BV(TLC_PIN_VPRG);
TLCPORT &= ~_BV(TLC_PIN_VPRG);
//flush input shift register (12bit * 16 LEDs)
COLPORT &= ~_BV(TLC_PIN_SIN);
TLCPORT &= ~_BV(TLC_PIN_SIN);
for(i = 0; i < 192; i++) SCLK();
XLAT();