F429ZI USB HID keyboard Input

[Manas_Gupta]

Hi,

I am facing a problem in implementing USB HID host input for keyboard.

I can get only 12-13 characters in my buffer after which the keyboard doesn't respond to any input as can be seen in snap attached.

source for keyboard handling is also attached 

[KDJEM.1]

Hello @Manas_Gupta ,

Are you using NUCLEO-F429ZI board?

Could you please take a look at HID_Standalone example, may help you. This is a typical application on how to use the STM32F429ZI USB OTG Host peripheral to interact with an USB HID Device such as a Mouse or a Keyboard.

I hope this help you.

Thank you.

Kaouthar

[FBL]

Hi @Manas_Gupta 

It seems the maximum packet size that the endpoint is capable of sending or receiving is not sufficient to handle your buffer size. Check your USBH_MAX_EP_PACKET_SIZE and USBH_MAX_DATA_BUFFER

[Bishwanath]

Hi Team,

Apologies for the delayed response. I have been delegated the project from @Manas_Gupta ,I did try the solutions you suggested regarding USBH_MAX_EP_PACKET_SIZE and USBH_MAX_DATA_BUFFER, but unfortunately, they did not resolve the issue. The keyboard still cannot register more than 12 keys at a time.

[FBL · Accepted solution]

Hi @Bishwanath 

It seems working without issues on my end. 

[Bishwanath]

Hello @FBL ,

Thank you for your ongoing support. I tested this with a new project and it's functioning correctly. There may be other factors affecting my main project that I'll investigate.

Best regards,
Bishwanath Kumar