If you write to the port, you fill the FIFO. What is the correct solution in this situation and how to reduce 25ms latency in Linux Kernel? If so, is the CTS line correctly wired? Thu Nov 10, 2: I tried to use the utility “nice” for priority management and “chrt” for select scheldule policy.
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Testing is done with this python script: If there are any questions regarding this simple application, do not hesitate to ask below.
Sign up or log in Sign up using Google. Wed Nov 09, 8: If the printer’s lid is opened between reading of cts and call to write, your program will block. Priorities won’t solve your problem completely anyway, because there’s always a chance for another unrelated IRQ to arise between your IRQ and the process. Last edited by paulenuta on Tue Nov 08, This device every 1s sends packets containing about bytes data.
Ilnux the latest driver there have been some changes: What is the correct solution in this situation and how to reduce 25ms latency in Linux Kernel? Tue Nov 08, To this converter’s UART connected device on baud If you write sc1i6s752 the port, you fill the FIFO.
And I faced the problem of long latencies. Now I trying to modify this driver for I2C work. Tue Nov 08, 8: You’d be better off asking in the Interfacing forum, or reading the datasheet.
SC16IS752 – Bare metal example project
Kernel trailer DTOK property says yes To be on the save side, you can put a 10k resistor in series. I tried xc16is752 use the utility “nice” for priority management and “chrt” for select scheldule policy. I identified the source of delays, they were caused by calling functions printk.
Thanks to a major collaborator for this document David Diaz Marin. Device tree loaded to 0x2effba00 size 0x45e8 Linux Kernel sources already has driver for this chip, but only in SPI mode. Therefore, this is the MCU configuration: Post as a guest Name.