lw35-upgrade/display/avr/main.c
2018-04-30 09:08:47 +02:00

74 lines
1.3 KiB
C

#include <avr/io.h>
#include <util/delay.h>
#include <stdlib.h>
#define LMG6202_DATA_PORT PORTD
#define LMG6202_CONTROL_PORT PORTD
#define LMG6202_PIN_CP (1 << 4)
#define LMG6202_PIN_LD (1 << 5)
#define LMG6202_PIN_DR (1 << 6)
#define LMG6202_PIN_DF (1 << 7)
int main()
{
int i;
int col = 0;
uint16_t it = 0;
UCSR0B = 0x00;
DDRD = 0xff;
PORTD = 0xff;
_delay_ms(500);
while (1) {
// VSYNC pulse
if (col == 1) {
LMG6202_CONTROL_PORT |= LMG6202_PIN_DR;
LMG6202_CONTROL_PORT ^= LMG6202_PIN_DF;
// _delay_us(1);
} else {
LMG6202_CONTROL_PORT &= ~LMG6202_PIN_DR;
}
// Latch data
LMG6202_CONTROL_PORT |= LMG6202_PIN_LD;
asm("nop");asm("nop");asm("nop");
LMG6202_CONTROL_PORT &= ~LMG6202_PIN_LD;
//LMG6202_CONTROL_PORT ^= LMG6202_PIN_DF;
_delay_us(1);
for (i = 0; i < 120; ++i) {
LMG6202_CONTROL_PORT |= LMG6202_PIN_CP;
if (it > 2500 && i > 60) {
//if (i == 0) {
LMG6202_DATA_PORT |= 15;
//}
} else {
LMG6202_DATA_PORT &= ~(15);
}
//asm("nop");
LMG6202_CONTROL_PORT &= ~LMG6202_PIN_CP;
asm("nop");
}
LMG6202_DATA_PORT &= ~(15);
// LMG6202_CONTROL_PORT &= ~LMG6202_PIN_DR;
if (col == 127) {
col = 0;
} else {
col++;
}
if (it==5000) {
it = 0;
} else {
it++;
}
}
}