Inputting alphabets for keypad 4x3

[Chris_xjtlu]

Hi MatrixM users,

I am working on the Mobile phone bundle of sending text messages with the PIC16F1937.

The basic program of writing a 'test message' in flowcode>uploading to MCU> and sending the 'test message' to a target phone has been achieved.

My questions are how to:

1)avoid this cumbersome procedure for manually inputting the test message inside flowcode and then reuplaoding the .fcf to MCU.

2)assign each keypad number to 3 letters and their number such as keypad1 = abc1, keypad2=def2 and so on and then build a manually input keypad capable of selecting the correct letter or number>display it on LCD>send to target phone.

Hope someone can shed some light or even provide a flowcode example if there's any available.

Regards,

Chris

[Benj]

Hi Chris,

This example is now a bit old (created in FC v3) and not very pretty but it does do what you are suggesting.

[Chris_xjtlu]

Thanks again Ben.

Keep up the great work that you do to help us with our projects or issues.

Regards,

Chris

[medelec35]

Hi Chris
For another example, have you seen this?
http://www.matrixmultimedia.com/mmforum ... 92&#p41292
It was not designed specifically for GSM, but it shows a method of producing letters with the keypad.

Martin