problem related to MISO AND MOSI pin of SPI plz help

[gaurav yadav]

hi frnds

i have two ques for SPI mode of ATMEGA16
1)when we enable MOSI PIN of master does it automatically starts the SCLK or not
2)after the transmission from master to slave does MOSI goes into Hi Z state or we have to make it HI Z state by making it input pin and writting PORTB=0


I M asking ths ques because i have sensor(ADNS2610)which have two port one for SCLK and SDIO so i have to connect both MOSI and MISO to one port of SENSOR


so plz plz plz help

 

[betwixt]

If you are using the SPI interface of a specific micro you need to tell us which one.

Normally the clock is produced in software or starts when the transmit register is loaded with data. There is no requirement for SPI lines to go hi-Z at all, it's up the the device manufacturer or your software to take care of that.

Brian.

 

[gaurav yadav]

thanx for reply

i was asking about atmega 16