Simultaneous run two USB ports on IMXRT1176-EVK

[smartpavan333]

Hi,

I am working on IMXRT1170-EVK and I took the example of "usb_device_cdc_vcom_lite".

In IMXRT1170-EVK had two USB ports.

I tested individually by changing CONTROLLER_ID. It's working fine.

#define CONTROLLER_ID kUSB_ControllerEhci0

#define CONTROLLER_ID kUSB_ControllerEhci1

Our requirement is to run both the USB ports simultaneously.

Q1: Is it possible to run two USB ports simultaneously?

Note:

I took another object for that structure.

usb_cdc_vcom_struct_t s_cdcVcom,s1_cdcVcom;

I modified in the handler section also.

Please find the attachment.

Q2: After initialization, USB OTG-2 App init is not working. It is returning error in this function(USB_DeviceAllocateHandle(controllerId, &deviceHandle);?

Can you help me this issue?

Thankyou.

[jingpan · Accepted solution]

Hi @smartpavan333 ,

Yes, it's possible. There isn't demos I can see. MCUXpresso configure tool can help. You can refer to these link.

https://community.nxp.com/t5/i-MX-RT-Knowledge-Base/Implementation-of-Dual-USB-Host-on-RT1060-EVK/ta...

https://community.nxp.com/t5/i-MX-RT/IMXRT1050-Using-both-USB-Host-and-USB-Device/m-p/1088500#commen...

Regards,

Jing

[smartpavan333]

Hi @jingpan ,

I followed as per the document, but I am getting error like this.

Can you help me this issue?

[jingpan]

Hi @smartpavan333 ,

Currently the tool doesn't support adding two usb instance in a project. You must add into software by yourself. Please refer to the examples I give.

Regards,

Jing