lpc2148 interface with external 4x4 matrix keypad

sravani t. OP (Company: PREES) #2143047
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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
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Kalaivani Guest #5185509
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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
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