UART3 on MK60DN512VLL10 does not work.

[stathis]

Hello all,

-We are working with a board based on the MK60DN512VLL10 using MQX 4.0.2  and have had success using UART4 as DEFAULT_IO_CHANNEL.

-We are trying to use UART3 as a RS485 port to the PTC16, PTC17 and PTC18 pins but there is no activity on UART3 TX pin (PTC17)

while the RTS pin (PTC18) works fine.

-We check it with a second board but the results were the same : TX of UART3 has no activity.

-The same firmware EXACTLY works fine on the TWR-K60D100M + Serial board,

the only difference is the uPC which is the MK60DN512VMD10 on the Tower System.

-Is there any problem with the UART3 on the MK60DN512VLL10 silicon or we are missing any detail?

Thanks for the help

[yarannan]

Hey, I am pretty new to this filed. I am working on a task that to test if UART3 working. I am not sure how? Is there any document/code examples that can help me to solve this task?

[Carlos_Musich]

Hi Stathis,

Have you tried setting different pins for UART3?

Carlos

[stathis]

Hi Carlos,

Yes I tried different pins (PTE4 and PTE5) and they work fine.

I suspect it is a silicon hardware problem of this K60 derivative.

Stathis

[perlam_i_au]

Have you tried transmit without Flow Control?

If you did it, could you please tell me what happened?

Perla

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