EmbeddedRelated.com
Forums

reg in dspi development

Started by moonboy May 11, 2008
Hi,

I am developing dspi code for mcf54452 board. I am communicating processor
with EEPROM (AT25080A) slave device. Write function is working fine. But
the read function is not working. 

Write seq:
----------

1. Send WREN command 
2. Send write Instruction
3. Send address where to be data written
4. Send data

Note: i checked the write seq by seeing the signals in scope. Every byte
had been sent out (Sout) perfectly.

Read seq:
--------
1. Send read Instruction
2. Send address where from the data to be read. 


Note: i checked the read seq by seeing the signals in scope.
1. No SCK signals
2. No DATA (Sin)
3. Chip select in inactive state (high)


I checked with pdfs. i am not getting any solution for this problem.

So can you guide me to solve this problem?

Reply me as soon as possible

Regards,
Karthikeyan.