Here is the i2c initialization code, the data is written to the camera (I even read it).
I think it's pointless to send the code for the vga monitor, it's too big. But it worked fine with the HREF and VSYNC signals that came from the ov7670 camera as shown in the picture. The ov5642 camera can't give me these signals. I don't know why.
#include <Wire.h>
#include <util/twi.h>
#include <util/delay.h>
#include <avr/pgmspace.h>
#define F_CPU 8000000UL
#define camAddr_WR 0x78
const uint32_t i2c_settings [] PROGMEM = {
0x310393, 0x300882, 0x30177f, 0x3018fc, 0x3810c2, 0x3615f0, 0x300000, 0x300100,
0x30025c, 0x300300, 0x3004ff, 0x3005ff, 0x300643, 0x300737, 0x301108, 0x301010,
0x460c22, 0x381504, 0x370ca0, 0x3602fc, 0x3612ff, 0x3634c0, 0x361300, 0x36057c,
0x362109, 0x362260, 0x360440, 0x3603a7, 0x360327, 0x400021, 0x401d22, 0x360054,
0x360504, 0x36063f, 0x3c0180, 0x50004f, 0x502004, 0x518179, 0x518200, 0x518522,
0x519701, 0x5001ff, 0x55000a, 0x550400, 0x55057f, 0x508008, 0x300e18, 0x461000,
0x471d05, 0x470806, 0x380802, 0x380980, 0x380a01, 0x380be0, 0x380e07, 0x380fd0,
0x501f00, 0x50004f, 0x430030, 0x350307, 0x350173, 0x350280, 0x350b00, 0x350307,
0x382411, 0x35011e, 0x350280, 0x350b7f, 0x380c0c, 0x380d80, 0x380e03, 0x380fe8,
0x3a0d04, 0x3a0e03, 0x3818c1, 0x3705db, 0x370a81, 0x380180, 0x362187, 0x380150,
0x380308, 0x382708, 0x381040, 0x380405, 0x380500, 0x568205, 0x568300, 0x380603,
0x3807c0, 0x568603, 0x5687bc, 0x3a0078, 0x3a1a05, 0x3a1330, 0x3a1800, 0x3a197c,
0x3a0812, 0x3a09c0, 0x3a0a0f, 0x3a0ba0, 0x350c07, 0x350dd0, 0x350000, 0x350100,
0x350200, 0x350a00, 0x350b00, 0x350300, 0x528a02, 0x528b04, 0x528c08, 0x528d08,
0x528e08, 0x528f10, 0x529010, 0x529200, 0x529302, 0x529400, 0x529502, 0x529600,
0x529702, 0x529800, 0x529902, 0x529a00, 0x529b02, 0x529c00, 0x529d02, 0x529e00,
0x529f02, 0x30302b, 0x3a0200, 0x3a037d, 0x3a0400, 0x3a1400, 0x3a157d, 0x3a1600,
0x3a0078, 0x3a0809, 0x3a0960, 0x3a0a07, 0x3a0bd0, 0x3a0d08, 0x3a0e06, 0x519370,
0x589b04, 0x589ac5, 0x401e20, 0x400142, 0x401c04, 0x528a01, 0x528b04, 0x528c08,
0x528d10, 0x528e20, 0x528f28, 0x529030, 0x529200, 0x529301, 0x529400, 0x529504,
0x529600, 0x529708, 0x529800, 0x529910, 0x529a00, 0x529b20, 0x529c00, 0x529d28,
0x529e00, 0x529f30, 0x528200, 0x530000, 0x530120, 0x530200, 0x53037c, 0x530c00,
0x530d0c, 0x530e20, 0x530f80, 0x531020, 0x531180, 0x530820, 0x530940, 0x530400,
0x530530, 0x530600, 0x530780, 0x531408, 0x531520, 0x531930, 0x531610, 0x531700,
0x531802, 0x54023f, 0x540300, 0x340600, 0x5180ff, 0x518152, 0x518211, 0x518314,
0x518425, 0x518524, 0x518606, 0x518708, 0x518808, 0x51897c, 0x518a60, 0x518bb2,
0x518cb2, 0x518d44, 0x518e3d, 0x518f58, 0x519046, 0x5191f8, 0x519204, 0x519370,
0x5194f0, 0x5195f0, 0x519603, 0x519701, 0x519804, 0x519912, 0x519a04, 0x519b00,
0x519c06, 0x519d82, 0x519e00, 0x502580, 0x558340,
0x558440, 0x558002, 0x5000cf, 0x371010, 0x363251, 0x370210, 0x3703b2, 0x370418,
0x370b40, 0x370d03, 0x363101, 0x363252, 0x360624, 0x362096, 0x578507, 0x3a1330,
0x360052, 0x360448, 0x36061b, 0x370d0b, 0x370fc0, 0x370901, 0x382300, 0x500700,
0x500900, 0x501100, 0x501300, 0x519e00, 0x508600, 0x508700, 0x508800, 0x508900,
0x302b00, 0x5001ff, 0x558350, 0x558450, 0x558002, 0x3c0180, 0x3c0004,
// LENS
0x580048, 0x580131, 0x580221, 0x58031b, 0x58041a, 0x58051e, 0x580629, 0x580738,
0x580826, 0x580917, 0x580a11, 0x580b0e, 0x580c0d, 0x580d0e, 0x580e13, 0x580f1a,
0x581015, 0x58110d, 0x581208, 0x581305, 0x581404, 0x581505, 0x581609, 0x58170d,
0x581811, 0x58190a, 0x581a04, 0x581b00, 0x581c00, 0x581d01, 0x581e06, 0x581f09,
0x582012, 0x58210b, 0x582204, 0x582300, 0x582400, 0x582501, 0x582606, 0x58270a,
0x582817, 0x58290f, 0x582a09, 0x582b06, 0x582c05, 0x582d06, 0x582e0a, 0x582f0e,
0x583028, 0x58311a, 0x583211, 0x58330e, 0x58340e, 0x58350f, 0x583615, 0x58371d,
0x58386e, 0x583939, 0x583a27, 0x583b1f, 0x583c1e, 0x583d23, 0x583e2f, 0x583f41,
0x58400e, 0x58410c, 0x58420d, 0x58430c, 0x58440c, 0x58450c, 0x58460c, 0x58470c,
0x58480d, 0x58490e, 0x584a0e, 0x584b0a, 0x584c0e, 0x584d0e, 0x584e10, 0x584f10,
0x585011, 0x58510a, 0x58520f, 0x58530e, 0x585410, 0x585510, 0x585610, 0x58570a,
0x58580e, 0x58590e, 0x585a0f, 0x585b0f, 0x585c0f, 0x585d0a, 0x585e09, 0x585f0d,
0x58600c, 0x58610b, 0x58620d, 0x586307, 0x586417, 0x586514, 0x586618, 0x586718,
0x586816, 0x586912, 0x586a1b, 0x586b1a, 0x586c16, 0x586d16, 0x586e18, 0x586f1f,
0x58701c, 0x587116, 0x587210, 0x58730f, 0x587413, 0x58751c, 0x58761e, 0x587717,
0x587811, 0x587911, 0x587a14, 0x587b1e, 0x587c1c, 0x587d1c, 0x587e1a, 0x587f1a,
0x58801b, 0x58811f, 0x588214, 0x58831a, 0x58841d, 0x58851e, 0x58861a, 0x58871a,
// AWB
0x5180ff, 0x518152, 0x518211, 0x518314, 0x518425, 0x518524, 0x518614, 0x518714,
0x518814, 0x518969, 0x518a60, 0x518ba2, 0x518c9c, 0x518d36, 0x518e34, 0x518f54,
0x51904c, 0x5191f8, 0x519204, 0x519370, 0x5194f0, 0x5195f0, 0x519603, 0x519701,
0x519805, 0x51992f, 0x519a04, 0x519b00, 0x519c06, 0x519da0, 0x519ea0,
// D/S
0x528a00, 0x528b01, 0x528c04, 0x528d08, 0x528e10, 0x528f20, 0x529030, 0x529200,
0x529300, 0x529400, 0x529501, 0x529600, 0x529704, 0x529800, 0x529908, 0x529a00,
0x529b10, 0x529c00, 0x529d20, 0x529e00, 0x529f30, 0x528200, 0x530000, 0x530120,
0x530200, 0x53037c, 0x530c00, 0x530d10, 0x530e20, 0x530f80, 0x531020,
0x531180, 0x530820, 0x530940, 0x530400, 0x530530, 0x530600, 0x530780,
0x531408, 0x531520, 0x531930, 0x531610, 0x531700, 0x531802,
// CMX
0x538001, 0x538100, 0x538200, 0x53831F, 0x538400, 0x538506, 0x538600, 0x538700,
0x538800, 0x5389E1, 0x538A00, 0x538B2B, 0x538C00, 0x538D00, 0x538E00, 0x538F10,
0x539000, 0x5391B3, 0x539200, 0x5393A6, 0x539408,
// Дополнительные настройки
0x54800C, 0x548118, 0x54822F, 0x548355, 0x548464, 0x548571, 0x54867D, 0x548787,
0x548891, 0x54899A, 0x548AAA, 0x548BB8, 0x548CCD, 0x548DDD, 0x548EEA, 0x548F1D,
0x549005, 0x549100, 0x549204, 0x549320, 0x549403, 0x549560, 0x549602, 0x5497B8,
0x549802, 0x549986, 0x549A02, 0x549B5B, 0x549C02, 0x549D3B, 0x549E02, 0x549F1C,
0x54A002, 0x54A104, 0x54A201, 0x54A3ED, 0x54A401, 0x54A5C5, 0x54A601, 0x54A7A5,
0x54A801, 0x54A96C, 0x54AA01, 0x54AB41, 0x54AC01, 0x54AD20, 0x54AE00, 0x54AF16,
0x54B001, 0x54B120, 0x54B200, 0x54B310, 0x54B400, 0x54B5F0, 0x54B600, 0x54B7DF,
0x54023F, 0x540300,
// UV ADJUST
0x550010, 0x550200, 0x550306, 0x550400, 0x55057F,
// AE
0x502580, 0x3A0F30, 0x3A1028, 0x3A1B30, 0x3A1E28, 0x3A1161, 0x3A1F10,
0x5688FD, 0x5689DF, 0x568AFE, 0x568BEF, 0x568CFE, 0x568DEF, 0x568EAA, 0x568FAA
};
void error_led(void){
DDRB |= 32;//make sure led is output
while (1){//wait for reset
PORTB ^= 32;// toggle led
_delay_ms(1000);
}
}
void twiStart(void){
TWCR = _BV(TWINT) | _BV(TWSTA) | _BV(TWEN);//send start
while (!(TWCR & (1 << TWINT)));//wait for start to be transmitted
if ((TWSR & 0xF8) != TW_START)
error_led();
}
void twiWriteByte(uint8_t DATA, uint8_t type){
TWDR = DATA;
TWCR = _BV(TWINT) | _BV(TWEN);
while (!(TWCR & (1 << TWINT))) {}
if ((TWSR & 0xF8) != type)
error_led();
}
void twiAddr(uint8_t addr, uint8_t typeTWI){
TWDR = addr;//send address
TWCR = _BV(TWINT) | _BV(TWEN); /* clear interrupt to start transmission */
while ((TWCR & _BV(TWINT)) == 0); /* wait for transmission */
if ((TWSR & 0xF8) != typeTWI)
error_led();
}
//для ov5642
void writeReg(uint8_t reg0, uint8_t reg1, uint8_t dat){
twiStart();
twiAddr(camAddr_WR, TW_MT_SLA_ACK);
twiWriteByte(reg0, TW_MT_DATA_ACK);
twiWriteByte(reg1, TW_MT_DATA_ACK);
twiWriteByte(dat, TW_MT_DATA_ACK);
TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
_delay_ms(1);
}
void arduinoUnoInut(void) {
cli();//disable interrupts
/* Setup the 8mhz PWM clock
* This will be on pin 11*/
DDRB |= (1 << 3);//pin 11
ASSR &= ~(_BV(EXCLK) | _BV(AS2));
TCCR2A = (1 << COM2A0) | (1 << WGM21) | (1 << WGM20);
TCCR2B = (1 << WGM22) | (1 << CS20);
OCR2A = 0;//(F_CPU)/(2*(X+1))
DDRC &= ~15;//low d0-d3 camera
DDRD &= ~252;//d7-d4 and interrupt pins
_delay_ms(3000);
//set up twi for 100khz
TWSR &= ~3;//disable prescaler for TWI
TWBR = 72;//set to 100khz
//enable serial
UBRR0H = 0;
UBRR0L = 1;//0 = 2M baud rate. 1 = 1M baud. 3 = 0.5M. 7 = 250k 207 is 9600 baud rate.
UCSR0A |= 2;//double speed aysnc
UCSR0B = (1 << RXEN0) | (1 << TXEN0);//Enable receiver and transmitter
UCSR0C = 6;//async 1 stop bit 8bit char no parity bits
}
void setup() {
arduinoUnoInut();
//for ov5642
for (size_t i = 0; i < sizeof(i2c_settings) / sizeof(i2c_settings[0]); i++) {
uint32_t data = pgm_read_dword_near(&i2c_settings[i]); // Читаем из PROGMEM
uint8_t reg0 = (data >> 16) & 0x0000FF ;
uint8_t reg1 = (data >> 8) & 0x0000FF ;
uint8_t val = data & 0x0000FF;
writeReg(reg0,reg1, val);
delay(100);
}
}
void loop() {
}