Part Number: LP-MSPM0C1104
Other Parts Discussed in Thread: MSPM0C1104,
Tool/software:
Hi experts,
I am developing UART function based on the example "uart_echo_interrupts_standby_LP_MSPM0C1104_nortos_ticlang'
I found that if I configure the PA28 as UART RX, it cannot receive data correctly.
Hardware connection is as follow:

Wave from LA:

There are 2 issues:
1. The data I sent from host PC is 0x23 instead of 0xE0.
2. The MCU cannot echo back the correct value it received.
As a comparison, I disconnect the "RXD>> pin" and PA28

Wave from LA:

The data from host PC is correct from the picture
For more comparisons, I test the PA26 and PA24 (setting them as RX)
Wave from LA:

The data transmission is OK.
The syscfg can be seen as follows:


Any suggestions for this issue? Is there any difference between PA28 and other PINs on EVM?
Thanks,
Leo