Pages: [1]   Go Down
Author Topic: SPI clock line not changing  (Read 555 times)
0 Members and 1 Guest are viewing this topic.
0
Offline Offline
Faraday Member
**
Karma: 8
Posts: 2526
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

hey all,

I'm trying to get the sample SPI EEPROM code to work with an atmel 25P1024 EEPROM with no luck.  I broke out the oscilloscope and found that the clock line SCK doesn't change levels when the SPI transfer should be in progress - it always stays low.  The MOSI line does change.

I do see a brief square wave when the device boots (immediately after power up or reset), but nothing afterwards.

I've checked the pinout and connections about 17 times and have rewired the breadboard a couple of times, even changed breadboards, to no avail.

I'm stuck; clues would be appreciated.

thanks,
/me
Logged

Pages: [1]   Go Up
Jump to: