I am supposed to call an spoi bus init function to get the spi device I
then use to register my device to.
This is the code in sam34:
/
* Public Functions
*
Hi, Jukka.
I'm working with the thread author on a low latency audio processor based
on the STM32H7 chip and can provide some technical details about the issue.
We've used Ethernet config from your repo bitbucket.org/jlaitin/nuttx/ and
integrated it to master branch of Nuttx OS. After that, we've
In case of board I was working with, the network traffic was handled by low
priority work queue. It is probably the same with your network driver.
Such work queue has configuration. Maybe you need to change some parameters
of it.
It might help if you send here your configuration file, or part of
Here is my current config file.
Thanks for advice about the work queue priority, I found and set the
CONFIG_STM32H7_ETHMAC_HPWORK option.
But mystically this make the latency worse - average ping-pong time
increased from ~375 to ~400 usec..
On Mon, Nov 9, 2020 at 8:04 PM Maciej Wójcik wrote:
>
Probably worth taking a look at
https://cwiki.apache.org/confluence/display/NUTTX/TCP+Network+Performance
That deals specifically with TCP but discussion related to the Ethernet
driver also applies. The NuttX (TCP) is capable of performing at
network speeds; the performance bottleneck is alwa
Thanks Gregory, for that wiki page.
I've already tested network throughput with 'udpblaster' tool and was
happily wondering by NuttX capability to flood full Ethernet bandwidth in
both directions simultaneously. That was one of the reasons why we've
chosen NuttX for our project. "If it's so strong
I've already tested network throughput with 'udpblaster' tool and was
happily wondering by NuttX capability to flood full Ethernet bandwidth in
both directions simultaneously. That was one of the reasons why we've
chosen NuttX for our project. "If it's so strong in flooding, it should
have low l
There are two threads involved:
1. The user thread that calls the UDP sendto() interface:
* Lock the network.
* Call netdev_txnotify_dev() to inform the driver that TX data is
available. The driver should schedule the TX poll on LP work queue.
* If CONFIG_NET_UDP_WRITE_BUFFERS is en
