Matrix Keypad routine

[skimask]

well, i was thinking that when i push "Button A" of the keyapd, the upper setpoint will be displayed, "Button B" = Lower limit, "Button C" = Backspace, "Button D" = OK , "Button *" = alarm on/off, "Button #" = Main screen

Ok, so you've defined the FUNCTIONs of the buttons...now how to you act on those functions.
In fact, do yourself a favor and just work on adding one button at a time...

[Kalind]

thats my point. I have no idea where to begin...i was thinking maybe scan keypad first, check if A or B was pressed and if so then act upon it by prompting the user to enter a desired setpoint. once that's done, press ok and return to the main display screen. the alarm can be set on for the desired lower setpoint and once the upper setpoint has been reached, the relay should switch on. vice versa

[skimask]

thats my point. I have no idea where to begin...i was thinking maybe scan keypad first, check if A or B was pressed and if so then act upon it by prompting the user to enter a desired setpoint. once that's done, press ok and return to the main display screen. the alarm can be set on for the desired lower setpoint and once the upper setpoint has been reached, the relay should switch on. vice versa

Then write some code and see how it works!
If it doesn't work, post the code, and I'm sure somebody will help you figure it out.

[Archangel]

The first thing to do is open Mr. E's Keypad.bas and read the instructions he wrote for you.