MCF52235 QSPI with no delays between transmissions

[ariaveta]

    Hello,

I would like to know if I can setup the Coldfire MCF5223 QSPI in master mode to have no clock delays between subsequent data.

The best result I got was about 1 clock delay. I'm asking this because I plan to use the QSPI not to transfer data to a slave device but to generate precise waveform without worrying about interrupt.

Any suggestion will be appreciated.


Thanks,
Marco

[Petter]

Does your waveform data fit in the FIFO? If it does I guess you could just use the wrap mode and disable interrupts.

[ariaveta]

Hello Petter,
 thanks for your reply.

I can't use wraparound mode because the waveform has a finite duration and I have to generate it at random time.

Bye,
Marco