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.
how to initialize 4x4 keypad in ble_app_blinky project. and how to read and write.
Karl Ylvisaker said:
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.
The answer to your question still depends on the answer to what I asked in my previous comment. Did you take a look at the GPIOTE peripheral documentation and example that I referenced in my previous comment?
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.
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.
