topic Re: Non-blocking UART I/O on a K64 in Kinetis Software Development Kit

Non-blocking UART I/O on a K64

larrykoos — Tue, 28 Oct 2014 20:55:58 GMT

Has anyone successfully implemented non-blocking UART I/O using the MQX KDSK on a K64? If I understand the documentation correctly, the normal fread/read calls are all implemented as blocking functions and there are no IOCTL mechanisms to make it non-blocking.

I've tried using the UART Peripheral API (UART_DRV_* functions) instead of the stdio functions. These work until you call UART_DRV_AbortReceivingData and UART_DRV_ReceiveData to start using a new buffer. After that, it never receives another character.

I'm using KDS 1.1.1 and MQX KDSK 1.0.0 on a TWRK64F120M.

Re: Non-blocking UART I/O on a K64

Carlos_Musich — Wed, 29 Oct 2014 22:16:18 GMT

Hi Larry,

We have detected a bug in KSDK, this is already reported. This is going to be fixed in our next KSDK1.1 release which is targeted for December.

Best regards,

Carlos

Re: Non-blocking UART I/O on a K64

henry28 — Wed, 25 Feb 2015 02:35:11 GMT

Hi Carlos,

What is the progress of fixing UART_DRV_AbortReceivingData bugs.

I still have the same bug when start a new buffer.

Do you have any idea how to fix this bug?

Regards,
Henry