Davinci DM644x USB

Hsien Tang Jao

Prodigy 20 points

hi~~

i have a problem about DM644X USB setting ,

I built data transfer interface by Davinci Dm644X USB like under descripition :

(1) PC ---->USB endpoint4

(2)data packet size = 512Byte,

(3)PC data size > 1MByte , so total packets are PC data size / data packet size(512Byte)

that i can get the "first packet"(512Byte) data from PC,and saved to DDR2",

but i can't received the second correctly data packet from PC,

my F.W setting is showed in folow descreption:

(1)get the first packet (512 byte) and save to DDR2

(2)clear 546h PERI_RXCSR(FIFOFULL)

(3)get the second packet (512 byte) and save to DDR2

how can i get the continous 2nd . 3rd . 4th packets from PC????

over 15 years ago

0 swami over 15 years ago

TI__Expert 7435 points

Hi,

What OS platform are you using Linux?? If linux I would assume you are using the standard kernel driver that ships with the Linux kernel. Can you also provide the Linux kernel version or DVSDK version?

regards

swami

0 Hsien Tang Jao over 15 years ago in reply to swami

Prodigy 20 points

hi~

i used Code Composer studio versio 3.2 to develop the system.

I think clear FIFOFULL that is not true way to sovle tihs problem,

ammm.......i have tried some idea for this ,but it still can't received correct packet.

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Davinci DM644x USB