AM62P: AM62P - SDK Uart Echo Example

Wei Han Chan

Part Number: AM62P
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

I'm encountering an issue with the UART echo SDK example on my AM62P. The example functions correctly when configured for mcu_uart0. However, after using sysconfig to change the uart_instance to uart1, the example ceases to work as expected.

Specifically, I observe that the transmit (TX) functionality appears to be operational, as I can see output. However, the receive (RX) functionality is not working, meaning the system does not respond to any input.

Best Regards

Wei Han

8 months ago

0 Vaibhav Kumar 8 months ago

TI__Guru 53173 points

Please read through the following FAQ: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1276094/faq-sk-am62-purpose-of-different-uarts/4839735#4839735

Regards,

Vaibhav

0 Wei Han Chan 8 months ago in reply to Vaibhav Kumar

Prodigy 60 points

Hi Vaibhav Kumar,

Based on the link there, it seems like the TIFS logging console used UART1, but how come the TX is working on my side but not the RX? By right, if it is used by the TIFS, I expect both tx and rx are getting blocked, right?

Is there any UART that I can use for my SDK other than the MCU_UART?

MAIN_UART0: Used for Linux and U-Boot on A53

MAIN_UART1: TIFS logging console

WKUP_UART0: DM logging console

MCU_UART0: MCU+SDK console

How about the 2,3,4,5?

Regards

Wei Han

0 Vaibhav Kumar 8 months ago in reply to Wei Han Chan

TI__Guru 53173 points

Hi Wei,

Thanks for your patience.

Wei Han Chan said:
How about the 2,3,4,5?

I would recommend you to read the datasheet and the schematics as well to see which all UARTs are having the TX and RX as pinouts for you to incorporate into your application.

Technical documentation link: https://www.ti.com/product/AM62P#tech-docs

Among UARTs 2, 3, 4 and 5 you can check for the same.

Please let me know once you have a UART shortlisted and tested out.

Regards,

Vaibhav

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AM62P: AM62P - SDK Uart Echo Example