NACK error when writing on ov7670 registers

[spman]

hi

please help me to write ov7670 registers
when i try to write on ov7670 via I2C (SCCB), i get NACK error. it occurs after sending slave address (0x42 according to datasheet).

thanks

 

[spman]

Re: sccb for ov7670

is here anyone worked with ov7670 or similars?

 

[bobcat1]

Re: sccb for ov7670

Hi

You are probably sending a wrong address try to shift address 1 bit left

I2C address is 7 bit + WR or RD bit

All the best

Bobi

The microcontroller specialist