Dear Team,
I have to interface 4x4 keypad with nrf52840
please help me..........
Best regards
nishant singh
Dear Team,
I have to interface 4x4 keypad with nrf52840
please help me..........
Best regards
nishant singh
Hello,
I have to interface 4x4 keypad with nrf52840
Is this a component that comes with some kind of serial interface, or is it a simple button matrix - and if so, is it multiplexed? Please be as specific as possible - the more specific you are, the easier it is for us to help you.
Depending on your answer to the above question, but you can likely use the GPIOTE peripheral for this. A simple demonstration of the GPIOTE peripheral's usage is given in the Pin Change on Interrupt example from the SDK.
Best regards,
Karl
Dear sir ,
how to initialize 4x4 keypad in ble_app_blinky project. and how to read and write.
Please elaborate further. Which example is working for your device, and which BLE peripheral example have you tried to merge the functionality into?
Which errors or issues are you facing when you try to merge the functionality into the BLE peripheral example?
You have still not answered all of my original questions regarding the keypad, so it is hard for me to advice you with so very limited knowledge of the hardware you are working with.
Best regards,
Karl
sir i want to add 4x4 keypad in ble_app_blinky example in ble peripheral
and 4x4 keypad working with blinky example in peripheral
Hello again,
With this information I would then suggest that you take the working code that you have made for the peripheral blinky example and merge it into the BLE blinky example. It is easier to merge non-BLE parts into a BLE example than going the other way around.
Best regards,
Karl
but sir i have done the same things but not working
Please elaborate on what you have done, in detail, so that I may try to help you resolve the issue.
What have you tried? What did you observe? How did it differ from what you would have expected? Was there any errors generated? If so, which, and from where?
The more information you provide, the easier it will be for us to help you resolve your issue.
Best regards,
Karl
Please elaborate on what you have done, in detail, so that I may try to help you resolve the issue.
What have you tried? What did you observe? How did it differ from what you would have expected? Was there any errors generated? If so, which, and from where?
The more information you provide, the easier it will be for us to help you resolve your issue.
Best regards,
Karl