Using USB in OpenCPU on BC66

Technical Subjects Open Solution
1

I want to use one of the serial devices available at the USB bus for my own OpenCPU app. I have no idea, how to do this. Can someone give me a hint or an example.

background:
In stock firmware A07 or A10 there are 2 serial devices appear my system after the module has booted. But there seams no functionionality behind this. I tried every possible AND impossible baudrate…

After uploading my own app (out of SDK 1.5) it works flawless on UART_PORT0 which is hardware “main” uart. Meanwhile the both USB serial devices becoming alive and sending a lot trace messages from system @115200 baud.

I tried to modify debug port setting in custom_sys_cfg.c and try all possible uarts from Enum_SerialPort in my app. …no luck

Can someone show me the magic using virtual com port on USB?
Thank you in advance!

2

I don’t quite understand your question at the moment. Do you want to create a virtual serial port in the Open application?Or something else

3

Thats exactly, what I want. I had the hope, that it is implemented in the Open-Lib and accessible by a user app. The virtual ports obviously exist in the firmware, but cannot be addressed by the user app. That is my problem.

4

Can you show me how you do it?For example, show a piece of your code.

5

I’m asking how to access this port. So I don’t have any code for that.

6

Hi,petter:
A change to this location can change which port the LOG information is spit out from.

image
image891×452 25.1 KB

In addition, the USB of BC66 only supports the capture of log, not other functions, and the USB power supply can not enter the sleep.
I hope my solution is useful to you.