topic Re: USB SDK files explanation in MCUXpresso General

USB SDK files explanation

patriciocohen — Thu, 04 Jul 2019 15:19:36 GMT

Hi guys,

I will appreciate if someone can explain me the purpose of the following files:

1) serial_port_uart.c

2) serial_manager.c

3) lpuart_adapter.c

I would like to know how they work, but code comments are almost non existent.

Where do I define that the UART has to be connected to the USB PHY, to create an USB COM port?

Thank you,

Patricio

Re: USB SDK files explanation

danielchen — Mon, 08 Jul 2019 06:34:01 GMT

The purpose of the serial manger is to mask the differences in multiple hardware modules.

The architecture of the serial manger is shown below:

For your case, serial_manage.c is in a high level.

Regards

Daniel

Re: USB SDK files explanation

patriciocohen — Mon, 08 Jul 2019 12:21:51 GMT

Hi Daniel,

Thanks for your reply.

And what about the other 2 files ( serial_port_uart.c and lpuart_adapter.c) ?

Thank you!

Re: USB SDK files explanation

danielchen — Mon, 15 Jul 2019 07:01:35 GMT

Hi Patricio

serial_port_uart.c defined LPUART APIs with user-defined settings, such as baudrate, parity mode.... please see functions Serial_UartInit/Read/write/...

These Serial_Uartxxx functions will call HAL_Uartxxxx, they are defined in LPUART_adapter.c

I would suggest refer to the uart demo for how to use lpuart driver .

SDK_2.6.0_EVK-MIMXRT1020\boards\evkmimxrt1020\driver_examples\lpuart

Please also read SDK API reference Manual: chapter 24 LPUART.

Regards

Daniel

Re: USB SDK files explanation

patriciocohen — Mon, 15 Jul 2019 21:49:31 GMT

Thank you Daniel