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Usb hid host problem

Question asked by naeem.umar on Jul 21, 2014
Latest reply on Jul 24, 2014 by naeem.umar
I am interfacing a standard usb keyboard with stm32f4 discovery board. I am using a usb host library which are provided by st. Now the keyboard is successfully connected with discovery board and all keys are decoded successfully but there is a problem with Num lock, Caps lock and scroll lock keys. these keys are decoded by discovery board but the discovery board which is host cannot turn ON or OFF the respective leds of Num lock, Caps lock and scroll lock keys on keyboard.
My question is howw can i turn ON or OFF these leds. 

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