lpc2148 interface with external 4x4 matrix keypad

sravani t. (sravani) OP (Company: PREES) 2011-04-13 07:48 #2143047

Rate this post

•	▲ useful ▼ not useful

hi...

I am new to arm. Now i am working with LPC2148(NGX blue board).I managed 
to interface GLCD(256x160).Now i am trying to interface an external 4x4 
matrix keypad with the following connections:


GLCD connections:

P0.16-P0.23 are Data lines for GLCD

P1.16-P1.20 are control lines for GLCD



Key pad connections

P0.0-P0.3 for columns taken as input

P0.4-P0.7 for rows taken as output

Attached files:

keypad.rtf (6.81 KB)

Reply Quote Edit Move Thread sperren Anmeldepflicht aktivieren Anpinnen Delete topic Thread mit anderem zusammenführen Report post

Mayur P. (mayurpabharekar) (Company: lml) 2015-01-31 11:18 #3991681

Rate this post

•	▲ useful ▼ not useful

C code

Reply Quote Edit Delete Report post

Afrin Guest 2015-10-25 10:59 #4322915

Rate this post

•	▲ useful ▼ not useful

Interfacing of. 4*4 matrix keypad with lpc 2148

Reply Quote Edit Delete Report post

Kalaivani Guest 2017-10-24 08:05 #5185509

Rate this post

•	▲ useful ▼ not useful

1.Interfacing ACD using lpc2148 controller board and iar ide software
2.interfacing DAC using lpc2148 controller board and iar ide software
3. Interfacing led and own using lpc2148 controller board and iar ide 
software