topic Full Speed USB [ FRDM-MCXA153] : usb device not detecting detach event in MCX Microcontrollers

Full Speed USB [ FRDM-MCXA153] : usb device not detecting detach event

Gurunath — Fri, 02 Aug 2024 11:46:38 GMT

Hi, i have tested the usb cdc(single port) vcom example (frdmmcxa153_dev_cdc_vcom_bm) where it echoes back the characters received from host. I tried using a flag for device detach event in USB_DeviceCallback() function defined in application main code. It looks like there is no interrupt triggered for detach event.

I have enabled detach event by defining macro USB_DEVICE_CONFIG_DETACH_ENABLE with value 1, but main isr function USB_DeviceKhciIsrFunction(), inside USB0_IRQHandler() is not getting called.

in main(), am trying to send message with delay and this is supposed to stop and print a debug message as flag is changed if interrupt has triggered. Please find below the attcahed images for screenshots and let me know if i need to do some configuration.

Re: Full Speed USB [ FRDM-MCXA153] : usb device not detecting detach event

Gurunath — Fri, 02 Aug 2024 13:39:51 GMT

example is from frdm-mcxa153 sdk

Re: Full Speed USB [ FRDM-MCXA153] : usb device not detecting detach event

Alice_Yang — Mon, 12 Aug 2024 07:23:32 GMT

Hello @Gurunath

Thanks for your patience.

The same on my side. I will check it with internal. Then reply you .ASAP.

Alice

Re: Full Speed USB [ FRDM-MCXA153] : usb device not detecting detach event

Alice_Yang — Thu, 15 Aug 2024 04:14:29 GMT

Hello @Gurunath

I suggest you use the below two methods.

1> Please use the attached signal from below parameters to detect attach (1) or de-attach(0)

g_UsbDeviceHidGeneric.attach = 0U;

2> Enable P2_12 as VBUS detection, and check the "SESS_VLD" bit status in CONTROL register as below

Alice_Yang_0-1723695202084.png

Alice