How to consider USB-HID send packet is sent successfully or not ?

Vishal_Panchal — Tue, 13 Apr 2021 17:31:24 GMT

When we send data through a specified endpoint using USB_DeviceHidSend() function, it returns a USB error code or kStatus_USB_Success. While the return value just means if the sending request is successful or not; the transfer done is notified by USB_DeviceHidInterruptIn() function.

So, In USB_DeviceHidInterruptIn() function, we are receiving event kUSB_DeviceHidEventSendResponse via USB_DeviceHidGenericCallback() function.

So, Is it the only event on which we should consider that previous packet is sent successfully? Or Shall we receive other usb_status for success or error or other error codes anywhere else?

Note: I have used same function names those are used in LPC55s28's USB-HID example code.

Re: How to consider USB-HID send packet is sent successfully or not ?

Alice_Yang — Thu, 15 Apr 2021 03:46:13 GMT

Hello Vishal_Panchal,

"So, Is it the only event on which we should consider that previous packet is sent successfully? "

->> Yes, just need consider this event.

Because enter function USB_DeviceHidInterruptIn() meaning the transfer is done and give a respond.

Alice

topic How to consider USB-HID send packet is sent successfully or not ? in LPC Microcontrollers

How to consider USB-HID send packet is sent successfully or not ?

Re: How to consider USB-HID send packet is sent successfully or not ?