UART TX0 at Port PIN A2 and A3 not working

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UART TX0 at Port PIN A2 and A3 not working

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ajitharikkath
Contributor II

Hi,
I am using FRDMKE06z Board and UART1 and UART2 is tested and working fine for LIN Protocol.
Right now for UART0 when I check at pin A2 and A3 I have tested and no transmission is fount to be happening.

SIM->PINSEL |= SIM_PINSEL_UART0PS_MASK;
I am seeing the register PINSEL is getting updated. 

When checked with Oscilloscope I am getting Tx is always low.
Please let me know anything else i have to implement for using UART0.

Regards

Ajith Arikkath

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3 Replies

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ajitharikkath
Contributor II

Hi,

UART0 clock is enabled and I am able to see the values in the register.

Is the pin having any Pull up.

Can you help on this.

Thanks

Ajith Arikkath

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Alice_Yang
NXP TechSupport
NXP TechSupport

Hello Ajith,

Have you enable the Transmitter  ? here :

pastedImage_0.png

If also done , please show your code , or it hard to find your problem , thank !

BR

Alice

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Alice_Yang
NXP TechSupport
NXP TechSupport

Hi  Ajith,

Does The UART0 clock been enable ?

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