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MCB2140 board question

Viktor Bucher over 18 years ago

I'm trying to use P1.16 to P1.23 with ULINK conected and am not able to turn leds on/off.

FIO1MASK = 0x00ff0000
FIO1DIR = 0x00ff0000

FIO1CLR = 0x00ff0000 => This should turn leds off
FIO1SET = 0x00ff0000 => This should turn led on

What could be wrong.

0 Viktor Bucher over 18 years ago

Sorry

I use FIO1MASK = 0x00000000 !
0 Suvidh Kankariya over 18 years ago in reply to Viktor Bucher

Many or all of the LPC micros support GPIO0 and GPIO1 to work as legacy IO and fast IO .
To turn on FAST IO on this we need to turn on the GPIOM bit in the SCS register .

The names of the register are relevant tp LPC23xx but I think they should be same for your micro also.

Suvidh
0 Viktor Bucher over 18 years ago in reply to Suvidh Kankariya

Thank you for your reply. I'will check that information in LPC2148's manual