Quote Originally Posted by prstein View Post
The only thing I don't like about SHIFTIN/SHIFTOUT is that they are so slow. But following advice from another thread (several threads actually) about SPI I used them to make sure everything was working in some fashion before I stepped up to the hardware SPI. Reversing the MISO/MOSI connections was just one of the many errors I started with. (I also spent an hour trying to figure out why I couldn't get *any* response from the F-RAM; turns out I hadn't actually installed the chip yet!)

Best Regards,
Paul
As I found out the reads are all zeros, I use os-scope to track the signals and found out that there is totally no signals out in SCK, therefore no SDI because the master is not generating clocks. the SDO has some data out which I could not understand...So I am think if the MCU hardware got any problem.. or the MSSP module was not running?...it is really a torture...
.....
Vinson