Search found 2209 matches

by Ultibo
Thu May 23, 2019 11:53 pm
Forum: General
Topic: SD Card Access Issue
Replies: 16
Views: 292

Re: SD Card Access Issue

=> i have tested 3 usb disks. all usb disks show high-speed on the Rpi3, but all usb disks show full-speed on my target Board. That seems quite definitive, while it would be interesting to see what other devices show it would also be interesting to see what the LAN9514 and Hub device are detected a...
by Ultibo
Wed May 22, 2019 10:08 am
Forum: General
Topic: SD Card Access Issue
Replies: 16
Views: 292

Re: SD Card Access Issue

Finally, i have successed to get a syslog messages from target board with CM3L. ( USB Plug in after system initialized. ) Hello SJ, That's exactly what we need to see. I was in the process of creating a small example to show how to hook up logging to your Debug Console function but since you have i...
by Ultibo
Tue May 21, 2019 2:35 am
Forum: General
Topic: SD Card Access Issue
Replies: 16
Views: 292

Re: SD Card Access Issue

It works well. each GPIO interrupt presented proper response. ( ex : GPIO42 : input 60Hz => result : 60.00419998, GPIO43 : input 70Hz => result : 70.03046417 ) That's a great result, thanks for letting us know. As i said before, we are now trying to test USB drive. but we failed to get a D:\. we ha...
by Ultibo
Sat May 18, 2019 12:56 am
Forum: General
Topic: SD Card Access Issue
Replies: 16
Views: 292

Re: SD Card Access Issue

We've just pushed an update that adds FIQ support for the GPIO driver in the Pi (all models). To make use of this you'll need to download the latest RTL source from GitHub and rebuild your RTL. The simplest option to enable FIQ for the GPIO is to use an init unit which we've shown in other examples,...
by Ultibo
Fri May 17, 2019 4:00 am
Forum: General
Topic: SD Card Access Issue
Replies: 16
Views: 292

Re: SD Card Access Issue

=> Would you let me know, when can i get the update, FIQ support ? Just before we go down that path, I think I overlooked before that you said the GPIO interrupt rate should be 60Hz which is actually not very high (about 16ms between interrupts). I think I might have confused that value with the 65...
by Ultibo
Fri May 17, 2019 12:08 am
Forum: General
Topic: SD Card Access Issue
Replies: 16
Views: 292

Re: SD Card Access Issue

But i have still failed to access in my target board with CM3L for several days. if i mention about H/W related with this, the CM3L connected with LAN9514, there is one upstream is conected with CM3L USB D+,D-, there are 4 downstearm ( D2P,D2N ~ D5P,D5N ), the D2P/N is now using RS232 for debug con...
by Ultibo
Wed May 15, 2019 11:19 pm
Forum: General
Topic: Problem using RTS/CTS with USB serial
Replies: 20
Views: 694

Re: Problem using RTS/CTS with USB serial

I have tested the PL2303 again and it does seam to work properly. I believe that the delay was caused by my software not the PL2303 driver. I have been using two pi systems connected via PL2303 devices operating at 460800 baud for over a week and the link is very stable. Excellent news, thanks for ...
by Ultibo
Tue May 14, 2019 11:32 pm
Forum: General
Topic: SD Card Access Issue
Replies: 16
Views: 292

Re: SD Card Access Issue

Hello SJ, have you had an opportunity to test this using a USB drive?

We are wondering if adding FIQ support to the GPIO driver might help to resolve your issue but first we need to know the result of this test and get confirmation on our question about the timers.

Let us know your results.
by Ultibo
Fri May 10, 2019 1:03 am
Forum: General
Topic: SD Card Access Issue
Replies: 16
Views: 292

Re: SD Card Access Issue

Hello SJ, We have a another question for you and something we'd like you to test. From your description it sounds like the issue might be caused by the GPIO interrupts being delayed while the SD card interrupts are processed. On the Raspberry Pi all of the peripheral interrupts go through one CPU (C...
by Ultibo
Fri May 10, 2019 12:17 am
Forum: General
Topic: Problem using RTS/CTS with USB serial
Replies: 20
Views: 694

Re: Problem using RTS/CTS with USB serial

Tested new FTDI driver on PiB, Pi2B, P3B, PiZW, seams to be working fine on all the devices. The RTS/CTS signaling looks exactly the way you would expect on the scope and best of all no dropped data bytes. That's a really good result, thanks for your help in testing this and for figuring out the ch...

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