Drew
Newbie level 4
keyboard microcontroller
I'm having a problem getting my 5 pin keyboard to interface to my microcontroller. I have the Vcc and GND lines connected to 5V and ground. I'm using an oscilloscope to read the Data and Clock lines but come up short. Even when I'm holding a key down continuously, the oscilloscope doesn't pick up any signals. Do the DATA and Clock lines have to be connected to 5V through external pull up resistors? I thought keyboards had internal pull up resistors. Thanks for any responses.
I'm having a problem getting my 5 pin keyboard to interface to my microcontroller. I have the Vcc and GND lines connected to 5V and ground. I'm using an oscilloscope to read the Data and Clock lines but come up short. Even when I'm holding a key down continuously, the oscilloscope doesn't pick up any signals. Do the DATA and Clock lines have to be connected to 5V through external pull up resistors? I thought keyboards had internal pull up resistors. Thanks for any responses.