This thread discusses non standard baud rates by adjusting the UART clock. The time now is Registration is quick, simple and absolutely free. All times are GMT The oscilloscope reveals that RTS is set to active i.

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Now if I cat the device file, I get the expected output. I’ve got it working now. We developed a customized hardware board based on an ARM processor. All times are Uaart This book contains many real life examples derived from the author’s experience as a Linux system and network administrator, trainer and consultant.

Are you uar to LinuxQuestions. I’ve also been able to pass the 9th bit on the output data, but so far it has not appeared useful. Open Source Consulting Domain Registration.

[5/5] tty: amba-pl Add earlycon support for SBSA UART – Patchwork

Find More Posts by Michael In other words, RTS signal comes too late. View LQ Wiki Contributions. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and uary administration. BB code is On. Visit the following links: The time now is It does not appear to be a problem if the stop bits received ;l011 at the wrong level.


Linux Power User Bundle. After modifying the uart clock in cmdline.

CONFIG_SERIAL_AMBA_PL011: ARM AMBA PL011 serial port support

Click Here to receive this Complete Guide absolutely free. Registration is quick, simple and absolutely free. Please visit this page to clear all LQ-related cookies. By combining these techniques you can ignore up to two junk bits before the stop bit. Board index All times are UTC.

I read that the pl uart can possibly do 2 stop bits, but it appears that maybe that isn’t readily available on the GPIO pins without some serious hacking?

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Have you turned on crtscts? Let me explain the background: One UART is used to communicate with a bluetooth module. This thread discusses non standard baud rates by adjusting the UART clock.

serial: amba-pl Add basic rs support – Patchwork

FYI, we use libbt to connect to the Broadcom-based bluetooth device. By basically taking the software delay designed to skip the stop bit and multiplying by 2, I can ignore the 9th bit. Linux – Kernel This forum is for all discussion relating to the Linux kernel.


By joining our community you a,ba have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Separating amba-pl device driver from linux kernel. Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.