Diaboltz
Newbie level 3
Hello there
I am busy with a project where I must use a 4x4 matrix keypad to display 40 characters i.e (A-Z[26],0-9[10],comma,decimal point, exclamation mark and question mark) using alpha numerical display(same way the old non-touch screen cell phones worked). I am using a 16F877A PIC and programming in MikroC compiler for PICS.
Now programming the keypad to display something is quite easy, but I am struggling with the part that i have to be able to display A,B and C for example only by pressing 2 on the keypad.
I want to do it so that when you press '2' it displays 'A', and if you press it within 500ms, it should display 'B' and within 500ms of that it should display 'C' and then loop back to A. If 'A' is pressed and a period of 500ms is gone, it must display 'A' next to the previous one etc.
I am desperately looking for answers, hope somebody can help me!
Thanks:shock:
I am busy with a project where I must use a 4x4 matrix keypad to display 40 characters i.e (A-Z[26],0-9[10],comma,decimal point, exclamation mark and question mark) using alpha numerical display(same way the old non-touch screen cell phones worked). I am using a 16F877A PIC and programming in MikroC compiler for PICS.
Now programming the keypad to display something is quite easy, but I am struggling with the part that i have to be able to display A,B and C for example only by pressing 2 on the keypad.
I want to do it so that when you press '2' it displays 'A', and if you press it within 500ms, it should display 'B' and within 500ms of that it should display 'C' and then loop back to A. If 'A' is pressed and a period of 500ms is gone, it must display 'A' next to the previous one etc.
I am desperately looking for answers, hope somebody can help me!
Thanks:shock: