3 Replies Latest reply on May 16, 2018 5:07 AM by AbhinavG_21

FX3 IN AND OUT ENPOINTS

Geethanjali_3054931 Apr 27, 2018 5:09 AM

Hi,

i am recieving data from p port to u port in the endpoint 0x81,while recieving this data through this dma channel,i am not able to send any data from u port to p port channel in the control centre through the endpoint 0x01.why?

both ptou and utop channel will not work at a time?

thank you.

1. Re: FX3 IN AND OUT ENPOINTS

AbhinavG_21 Apr 30, 2018 8:18 PM (in response to Geethanjali_3054931)

Hi,

Are you streaming continuous data from p port to u port?
What error you are getting on UART print?
Also explain your application in brief?

Thanks & Regards
Abhinav.
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2. Re: FX3 IN AND OUT ENPOINTS

Geethanjali_3054931 May 1, 2018 10:12 PM (in response to AbhinavG_21)

Hello,
I am using slavefifo application,i modified control centre for this.
i am streaming contineous data from p port to u port in the endpoint 0x81,while streaming ,i am sending data in the control centre endpoint 0x01 that is u port to p port channel.if i send this from u to p,p to u channel stops means throwing exception?what whould be the reason?

regards
geethanjali
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3. Re: FX3 IN AND OUT ENPOINTS

AbhinavG_21 May 16, 2018 5:07 AM (in response to Geethanjali_3054931)

Hi,

Please check for the A[1:0] lines from FPGA to FX3. You can create two DMA channels for reading and writing but communication between FPGA and FX3 is half duplex. You have to switch Address lines A[1:0], if you want to switch the mode from reading to writing or vice - versa.

Thanks & regards
Abhinav
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