topic Re: UartPeripheral() cannot open PC UART port in LPC Microcontrollers

UartPeripheral() cannot open PC UART port

zhangeh10594 — Fri, 19 Jun 2020 02:23:33 GMT

Hello ，when I’m testing the example of AN12327, and I follow the steps one by one, but after I started with the flash_program.bat . It caused an error named "UartPeripheral() cannot open PC UART port (COM5) speed 57600"!

And I'm sure I have chosed the right COM5, so I don't know why this happened.

And more questions, The AN12327 examples is based on IAR tools, is there any example for MDK keil?

By the way , my MCU is LPC55S69, and I'm use the LPC55S69-EVK board.

Re: UartPeripheral() cannot open PC UART port

Alice_Yang — Fri, 19 Jun 2020 06:57:02 GMT

Hello 小白张,

Have you close serial terminal before run flash_program.bat ?

Re: UartPeripheral() cannot open PC UART port

zhangeh10594 — Mon, 22 Jun 2020 07:13:52 GMT

Hello,

Certainly I've close serial terminal before run flash_program.bat. And it still have this problem. But when I'm run the post_build_mdk.bat, it caused an error like this , I don't how to solve this!

I'd like to ask if it's the chip version, and my chip's version is 0A not 1B .

Or there are any app's example for MDK keil , cause the IAR isn't very helpful for my project.

Re: UartPeripheral() cannot open PC UART port

Alice_Yang — Tue, 30 Jun 2020 09:18:07 GMT

Hello ,

Sorry there is no IAR project about this.

You can take a video or screenshot show your steps, then I can help to check the issue, thanks.

Alice

Re: UartPeripheral() cannot open PC UART port

zhangeh10594 — Mon, 10 Aug 2020 01:46:07 GMT

Can I have your WeChat or any communication ways to connect you？ I’m still pullzed by this problem。