EPM900

show it all.
some LPC pins can not be modified if bthey are assigned as certain things (e.g. enable IIC and the pins can only be set OC)

also, before selecting analog pins on P1 you should configure P1M1 and P1M2

Erik

show it all.
some LPC pins can not be modified if bthey are assigned as certain things (e.g. enable IIC and the pins can only be set OC)

also, before selecting analog pins on P1 you should configure P1M1 and P1M2

Erik

I am using port o, as you can see on the code. I use P0.1 as input pin for the A/D to perform a single conversion. I am using the pin to read the battery voltage of the equipment.
Why don't the control registers assume the configuration values?

Why don't the control registers assume the configuration values?
as stated before, the SFRsa will only accept "legal" values.
Have a look at what you set and what you get and check that in the user guide. If that does not clear it up in half an hour, post what you set and what you get.

Erik

The values remain at 0

The values

WHAT values?

Erik

The SFR values. When i perform the mov instruction, the rigister does not assume the new configuration value.

well one step at the time

mov a,#47

if the emulator show acc to be 47, so far, so good

MOV P0M1,#10001110B
mov a,P0M1

what does a show
what does p0m1 show

When i perform the following instructions the ADINS does not assume the new value

MOV A,#0x010
MOV ADINS,A

I am trying to help you, DO WHAT I ASKED, not something else

Erik

Thanks.
That works fine.

What next

Earlier:
Q:the SFRs .....Have a look at what you set and what you get

A:The values remain at 0

Now:
Q:.... MOV P0M1,#10001110B
....what does p0m1 show

A:That works fine.

One is bullshit, which one

I think i mentioned that the problem is configuring the A/D registers not the Port 0.
The registers i do not manage to configure are

ADMODB
ADINS
ADMODA

ADCON1

Therefore the A/D does not work.

Ok, I give up

"Ok, I give up"

He has told you that the registers beginning with 'P' change their values in accordance with what is written to them, however the registers beginning with 'A' do not.

then taking what I suggested and do it with a P register should not be rocket science. Spoon feeding is over.

Erik