Horo,
Can you please post how did you measure the real pol in your post from 2009?
Thanks.
Search found 15 matches
- Mon Sep 24, 2018 8:01 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
- Mon Sep 24, 2018 7:50 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
I am using ubuntu 16.04 LTS
And by all my measurments
it IS going at 1ms.
And by all my measurments
it IS going at 1ms.
- Fri Sep 21, 2018 9:53 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
To further explain my point.
When i set to 1, i get 8 times faster transmission than settings it to 8.
When i set
Code: Select all
USB_CFG_INTR_POLL_INTERVAL
- Fri Sep 21, 2018 9:51 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
Ok Maybe i am getting it wrong.
I meassure data rate.
With interrupt 1 , setting it to 1ms yeilds: 8KB/s.
That is measured and know to be correct.
So is that true 1ms or it is just the normal for 8ms?
I am not talking about control endpoints.
This is the endpoint 0x81
I meassure data rate.
With interrupt 1 , setting it to 1ms yeilds: 8KB/s.
That is measured and know to be correct.
So is that true 1ms or it is just the normal for 8ms?
I am not talking about control endpoints.
This is the endpoint 0x81
- Fri Sep 21, 2018 2:47 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
But it is going at 1ms
It reports in my python script at 8KB/s
which means it is going at 1ms.
If i set it to 8ms it reports 1KB/s as expected.
So i guess your the one arguing.
It reports in my python script at 8KB/s
which means it is going at 1ms.
If i set it to 8ms it reports 1KB/s as expected.
So i guess your the one arguing.
- Thu Sep 20, 2018 3:51 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
I got it by setting to 1.
Can i get faster?
I have tried setting it to 0 , but it just defaults to 8.
Code: Select all
USB_CFG_INTR_POLL_INTERVAL
Can i get faster?
I have tried setting it to 0 , but it just defaults to 8.
- Thu Sep 20, 2018 1:45 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
I saw sites that refere to the poll rate as refresh rate so i thought they are same.
I stand corrected.
The fastest poll rate i got was 1ms, can i go faster?.
I stand corrected.
The fastest poll rate i got was 1ms, can i go faster?.
- Wed Sep 19, 2018 9:47 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
I mean the refresh rate.
Can i use more than 2 interrupt-IN endpoints?
If not then why?
As up to 7 InT-OUT are usable.
Regards
Can i use more than 2 interrupt-IN endpoints?
If not then why?
As up to 7 InT-OUT are usable.
Regards
- Wed Sep 19, 2018 6:57 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
i need to send around 20KB/s.
I was able to get 1ms poll with interrupts by simply setting the refresh rate to 1.
how many endpoints can i use?
Also , how much time does it take tk send the interrupt endpoint data ( is it 70us like a normal frame?)
Thanks
I was able to get 1ms poll with interrupts by simply setting the refresh rate to 1.
how many endpoints can i use?
Also , how much time does it take tk send the interrupt endpoint data ( is it 70us like a normal frame?)
Thanks
- Wed Sep 19, 2018 3:17 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
Ok so i was getting it wrong. What is the fastest poll rate for interrupts. The fastest i got is 1ms. Can i go faster? Also what is the max number of endpoints IN (Host in device out) 2 are doucmented.Can i get more? And if i set multible endpoints, will the host poll them in order? and with known p...
- Wed Sep 19, 2018 5:06 am
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
Why is control requests no fast.From my testing they are faster than interupts.I was able to reach 32KB/s with control.i canmot use padding as that would be very slow..
I dont wanr to send partial frames.i want execute code every 10 bits sent.then continue sending normally.
I dont wanr to send partial frames.i want execute code every 10 bits sent.then continue sending normally.
- Tue Sep 18, 2018 6:25 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
i Guess my request wasnt clear enough. What i am trying to understand is the timing of Vusb. I want to transmit ADC readings to the PC. I need to start the ADC every around 100us max. Than the cpu can continue with Vusb. What i though was that UsbPoll doesnt retuen untill all data is written. Then i...
- Tue Sep 18, 2018 4:46 pm
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
If it was only that easy.
I need to configure the usn every 2 bytes
and not send the rest till the data is read.
putting it in usbFunctionread
i would miss 3 out of 4 readings
I need to configure the usn every 2 bytes
and not send the rest till the data is read.
putting it in usbFunctionread
i would miss 3 out of 4 readings
- Tue Sep 18, 2018 5:30 am
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
Re: modify usbFunctionRead
The request size if bigger than 2,
however i want to configure the adc every 2 Bytes.
so i want usbFunctionRead to be called every 2 bytes.
however i want to configure the adc every 2 Bytes.
so i want usbFunctionRead to be called every 2 bytes.
- Mon Sep 17, 2018 7:04 am
- Forum: V-USB
- Topic: modify usbFunctionRead
- Replies: 27
- Views: 173074
modify usbFunctionRead
Hi,
I need usbFunctionRead to be called every 2 bytes instead of 8.
How do i modify source code to do that.
Thanks.
I need usbFunctionRead to be called every 2 bytes instead of 8.
How do i modify source code to do that.
Thanks.