Keypad
Contents
PAGE UNDER CONSTRUCTION !!!
How to connect a keypad to your Armadeus board
Introduction
Your Armadeus board allows you to connect a matrix keypad as input device. The default keypad driver configuration supports 16 keys connected to the i.MXL CSI bus. The current development state of the driver is unfinished and not fully generic but you can easily extend the driver to support keypads up to 36 keys using the whole CSI bus. Development are also ongoing to connect matrix keypads using the FPGA.
Hardware
There are 2 solutions to connect a matrix keypad to your Armadeus board:
Direct connection to i.MXL
By default your board supports a direct connection with a 4x4 matrix keypad using the CSI lines: CSI_MCLK, CSI_D0...CSI_D6.
The driver uses the i.MXL GPIO's internal pull-up, therefore your board does not need any additional external resistor.
{add a big picture of the keypad link with APF_DEV_LIGHT} {add a big picture of the keypad link with APF_DEV_FULL} |
FPGA solution
Under development...
Software driver
link to software driver
Links
external links (for exemple: locomo driver model)