I have developed the USB HID keyboard application.. But unable to receive the data send from computer to keyboard... i.e to turn on/off command for CAPSLOCK/NUMLOCK/SCROLLLOCK led...
Can i get any reference or specific file or routine where i can receive that data & turn on or off leds accordingly......
Can you please let us know which device and IDE are you using?
Also, we have HID code examples, which you can refer to get a more clear understanding. You can refer this 3-button HID mouse code example here : https://www.cypress.com/documentation/code-examples/ce226423-psoc-6-mcu-usb-hid-mouse-application. This code example demonstrates how to setup a USB HID descriptor to implement a 3-button mouse.
Also, you can refer this application note : https://www.cypress.com/documentation/application-notes/an57473-usb-hid-basics-psoc-3-and-psoc-5lp. There is a code example which demonstrated USB HID mouse implementation : https://www.cypress.com/documentation/code-examples/ce95394-usb-hid-mouse-psoc-35lp .
Please let us know in case of further queries.
I am using CY8C4246AZI-L445....IDE Psoc4....
The mentioned link is for mouse...i want to create for keyboard.
I have already developed the usb keyboard code....its working fine.....
i want to control the capslock/numlock/scrolllock leds....
I have also added the OUT endpoint in sch component and written the below code to turn on leds
/* Check to see if the OUT Endpoint is full from a recieved transaction. */
if(USBFS_1_GetEPState(OUT_ENDPOINT) == USBFS_1_OUT_BUFFER_FULL)
CAP_Write(1); // capslock led...written only for testing purpose
/* Get the number of bytes recieved */
OUT_COUNT = USBFS_1_GetEPCount(OUT_ENDPOINT);
/* Read the OUT endpoint and store data in OUT_Data_Buffer */
USBFS_1_ReadOutEP(OUT_ENDPOINT, USB_Out_Keyboard_Data, OUT_COUNT);
/* Re-enable OUT endpoint */
but still i didnt get positive result..
Can you please check the section "APPENDIX C: USB KEYBOARD IMPLEMENTATION" in the USB HID spec provided on the USB-IF here : Device Class Definition for HID 1.11 | USB-IF ?
After going through the code mentioned by you, the flow of the firmware seems to be correct. Can you please check the REPORT_DESCRIPTOR as provided in the USB-HID spec?
I have checked the APPENDIX C and also REPORT Descriptor for keyboard...I have compare it with my report descriptor...there are minor difference in input & output field...but how to edit that?
I have attached my report descriptor.