keypad control of stepper

lardom

· I·am translating a working Pbasic app that I wrote to Spin. I want to control the speed and distance of a stepper motor with a 4x4 keypad and display those values on an LCD.··My problem is that when·I press the # key, which I use as an enter button,·the same value gets copied to both 'distance' and 'speed'. I included a piece of code that passes a value to a PUB method I call "tester".·How can I·send a separate value to "speed"?

······················································ ·PRI Keybuf|code··········
·· ······················································ ··if key == 11····························· {11 is the # key}
····························································· ·tester·
····························································code· := code * 10 + key
· ························································ ·distance := code ····························································································

Mike Green

How about showing "tester"?

Why do you have "distance := code" in "Keybuf"? It's difficult to tell you what to do without more of your program. How about attaching the whole thing to a message (use the Post Reply button and the Attachment Manager).

Brian_B

·I don't know if this will help any,here is a keypad read program I did some time ago. I do have another version that stores the key presses until you hit "enter" ,but that one still has some bugs.



Brian

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"Imagination is more important than knowledge..." Albert Einstein

lardom

Thanks for responding so quickly. I will attach the entire program in a day or so after I clean up the file. You guys are great.

lardom

I've attached the necessary files minus most of the clutter. This is my third forum post and I'll try not to ask for help if I can help it because I get a big charge out of solving these problems myself. (Crossword puzzles don't do it for me.) When I completed my BS2 project I got depressed so I decided to jump back in and challenge myself·to a more feature rich Spin version·using less hardware.

· My problem is that I can't figure out how to send separate values to variables "distance" and "speed" with one key. I want to use the # key on my 4x4 keypad as the enter key.

Graham Stabler

I don't think you can do it with just one button, the program needs to know which you are trying to adjust. If you really wanted to use one button then I suppose you might use time, a long press on the # means distance a short hit speed. But better might be to have a button to press before entering the speed/distance

A100#

Might set speed 100

B50#

Might set distance to be 50.

Or use one button to toggle what you are adjusting, that is quite a nice way to do it because you can add as many items as you like to a list and use the one button to scroll through them. You might also have a cancel button if you decide you don't actually want to press enter.

Graham