Enabling USB host functionality on OTG2

[EmbeddedTech]

Hi,

I am working on the IMXRT1060 EVK and would like to use both USB 1 and USB2. The USB device CDC function on the USB1 and the USB host function on the USB2. I have modifies the CONTROLLER_ID for device as kUSB_ControllerEhci0 and for host as kUSB_ControllerEhci1. The Virtual COM functionality is working on USB1 but the host functionality is not working on USB2. Can you please let me know what else should be taken care in order to use USB2 as host.

Thanks.

[FelipeGarcia]

Hi,

You can use source code attached, the example starts using Ehci0 controller but changes to Ehci1 if you press SW8. Maybe you can use this code as reference.

Have a great day,

Felipe

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[EmbeddedTech]

Hi @FelipeGarcia ,

How does the Cache affect the USB host functionality?

If I disable Data Cache (SCB_DisableDCache();) in the main function after board initialization, then it detects the mouse as a peripheral and can get the data on the terminal. But the display update becomes very slow and the startup gif file does not play.

If I do not disable the cache then the mouse is not detected. 

What could be the reason for this?

Thanks.

[EmbeddedTech]

Hi,

I have done the init similarly only.

I have configured the Ehci0 as device and Ehci1 as host.

The host init is done successfully. But when I connect the mouse it does not print the device information and when I disconnect the mouse it says enumeration failed.

Should I enable any clock or something for USB2?

Thanks.