Select all [ This is the main, that should be executed to perform the echo function. I’ve tried to play with the priorities and scheldule policies, but it also did not give the desired results. Loaded overlay ‘sc16isspi’ Email Required, but never shown.

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linux SC16IS driver,Receive Line Status error | NXP Community

I will set up a VM with Ubuntu tonight and cross-compile. Loaded overlay ‘i2c-rtc’ I started compiling locally but a quick search in the forum tells me it will take 5hs or more. It also cleans the flag that generated the interrupt. Transmission and the reception done with interrupt technique.

SC16IS752 – Bare metal example project

Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge linxu you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Because in your case the clock nodes both have sc16s752 same name which in my opinion ought to be OK because they are effectively local to each devicethe second clock instance never gets created and the second driver instance hangs around waiting for it.


Thanks to a major collaborator for this document David Diaz Marin. Therefore I have more then one Sc16si752 and I don’t want to compile each of them. Yes of course I can follow the instructions on the side, but do I still get updates after recompiling the kernel? Initialization of the bridge to perform the communication. Priorities won’t solve your problem completely anyway, because sc16ie752 always a chance for another unrelated IRQ to arise between your IRQ and the process.

Thanks for your assistance!

But queued work is performed within 25ms after interrupt occurs. Driver ‘spi-bcm’ is already registered, aborting The example shows the device functionality by creating a simple echo transmission, where you are able to read what you just write into the device.

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This is the main, that should be executed to perform the echo function. Now I can see spidev0. What is the correct solution in this situation and how to reduce 25ms latency in Linux Kernel? I will play around with this and let you know the results. Renaming the clock nodes and the overlays themselves to be more logicalI ended up with these: In the example channel 0 is used. So, it seems that the DTB file name matters.

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Embedded Linux: SC16IS buffer overflow – Stack Overflow

Email Required, but never shown. I’m using the default 4.

Before any data is transmitted or received, the master must send the address of the receiver via the SDA line. Transmission and the reception done with interrupt technique 5. Is rpi-upgrade still possible or do I have to compile the kernel after each upgrade? By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

In the interrupt service routine the program reads the interrupt identification register, and it’s ready to sc16s752 a different task for each interrupt, for now it simply enables the data ready flag when the interrupt was generated by the RHR.

If there are any questions regarding this simple application, do not hesitate to ask below. I 2 C data write and read operations.