SC16IS752 LINUX DRIVER

This device every 1s sends packets containing about bytes data. Sign up using Facebook. And I faced the problem of long latencies. I don’t think this a Device Tree issue – the bindings here don’t give any control over that kind of functionality. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. Transmission and the reception done with interrupt technique. As for the chip itself and it’s driver:

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Loaded overlay ‘sc16isi2c’ I’ve tried to play with the priorities and scheldule policies, but it also did not give the desired results. This is the main, that should be executed to perform the echo function. Last edited by paulenuta on Fri Nov 11, I identified the source of delays, they were caused by calling functions printk. It also cleans the flag that generated the interrupt. Select all uname -sr. Linux Kernel sources already has driver for this chip, but only in SPI mode.

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Kernel trailer DTOK property says yes Mon Nov 14, Join Stack Overflow to learn, share knowledge, and build your career. What kernel are you running?

SC16IS (SC16IS7XX driver) CTS read as always MARK(True) – Raspberry Pi Forums

If there are any questions regarding this simple application, do not hesitate to ask below. Fri Nov 11, The registers are shift 3 positions left because the UART’s internal register select are the bits 3: And here i faced with problem.

Thu Nov 10, 3: Stack Overflow works best with JavaScript enabled. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. With the latest driver there have been some changes: Your feedback or suggestions are also welcome.

But after this time, FIFO is overflowed and data lost bytes transmits in 26ms. In the example channel 0 is used.

This device every 1s sends packets containing about bytes data. I 2 C data write and read operations 3. Sign up or log in Sign up using Google.

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linux SC16IS752 driver,Receive Line Status error

Initialization of the bridge to perform the communication. Now I trying to modify this driver for I2C work.

And I faced the problem of long latencies. If the printer’s lid is opened between reading of cts and call to write, your program will block.

As soon as all FIFOs between your program and the wire are full, writing will block, regardless of the model or brand of the chip. It’s hard to tell where these 25ms come from exactly without doing profiling on sv16is752 system. Read command line from file ‘cmdline. Andrew Gazizov 11 3.

Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.