thank you for your answer When the '1' shift is not this lead?
Then how to i write register in Ov7670 ?? 텍스트 또는 웹사이트 주소를 입력하거나 *문서를 번역하세요.* <https://translate.google.com/?tr=f&hl=ko> *취소* <https://translate.google.com/?tr=t&hl=ko> lejiseuteo sujeong-eul haeyamanhabnida 이것을 찾으셨나요? 레지스터 *설정* <javascript:void(0)> I must register modification in OV7670 I wonder how to I2C write . *Please understand the lack of my English skills. ^^ ;;;; thanks 2015년 6월 25일 목요일 오전 2시 18분 37초 UTC+9, Graham 님의 말: > There is an "8 bit" representation of an I2C address, where the bottom bit > is actually the Read/Write bit and is, by convention, set to zero to > describe the address. > There is a "7-bit" representation of an I2C address, where the address is > shifted one bit to the right, so the read/write bit disappears and is not > part of the address. > Half the manufacturers do it one way, the other half the other way. > > Linux/Debian uses the 7 bit representation. > > 0x42 >> 1 = 0x21 > > --- Graham > > == > > On Wednesday, June 24, 2015 at 3:13:48 AM UTC-5, 멘지 wrote: >> >> >> I'm trying i2c bus on BBB >> >> slave module is OV7670 ( CMOS Camera ) >> >> OS is angstrom >> >> >> >> <https://lh3.googleusercontent.com/-zT9VFvtWOmo/VYpkZj8P2MI/AAAAAAAAFDw/Abor6TYsMrg/s1600/dd.png> >> >> >> when i connect ov7670 on BBB P9 Header (19,20) >> >> and command i2cdetect -r -y 1 >> >> look at the picture above you fine '21' is creating >> >> 0x21 is slave address ???? >> >> but slave address of ov7670 is 0x42 in datasheet >> >> what means 0x21 ?? >> >> and >> >> am i better try i2c ??? >> >> >> >> My purpose is writing data to the ov7670 register. >> >> >> Advice please >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
