Can anyone tell me how i use adc pins as GPIO in lpc2124
Thanks in advance.
Why do you so seriously dislike looking at the user manual of the processor?
The documentation clearly indicates that the PINSEL1 register have the bit values set to 10 for P0.27, P0.28, P0.29 and P0.30.
And it also very clearly indicates that you need the bit values 00 to get the individual pins to work as GPIO.
Haven't you spent time looking at page 110 and 111 of this document? www.keil.com/.../user_manual_lpc2114_2124_2212_2214.pdf
The information in the manual very clearly indicate that your initial assign of PINSEL1 can not work. And it also very clearly indicate that your program can not work if you completely ignore PINSEL1.
You really can't get your program to work by ignoring the following information:
The direction control bit in the IO0DIR register is effective only when the GPIO function is selected for a pin. For other functions direction is controlled automatically.
As already explained in my first post, your P0.27 doesn't work because you haven't correctly configured the relevant bits in PINSEL1. And the manual does show the reset values for this register in the last column of the table.
So in short: No manual reading means no progress. Ignore the processor documentation and you will continue to be stuck.
Thankyou sir... Yes these pins working now I'm ignore pinsel register so I faced this problem but now these pins are work in correct way .
You are correct sir I am not read manual properly, so I am stuck at that point
Thank you ...