Search found 21 matches

Are you sure it needs 30 + instructions to quit the instruction handler ?
Because I see the retfie instruction who seems to quit the instruction (handler ?).

Tacq, _can_ be programmed into the c ...

Thanks a lot for your answers it really helps me Wink

So I suppose I shouldn't use the adc_done interruption since it isn't as precise/accurate as a simple delay.

I have one more question:
Do ...

Sorry I forgot to say that he's using the adc_done interruption...

But this doesn't change anything I think...He doesn't have the acquisition delay.

But apparently the conversion is correct till ...

Hi,

I read the assembler code in the lst file and I have this:

.................... valeur_adc=read_adc();
0182: BSF FC2.2
0184: BTFSC FC2.2
0186: BRA ...

Omg sorry I forgot you were using a 40Mhz ocillator

Sorry for the inconvenience Rolling Eyes

Anyway thanks a lot !

Just one more question:

Why are you using 64 for the divider of the adc clock ?

Thanks a lot PCM Programmer !

You're a genius and your explanations and examples are always amazing.

I understand much better now.

Thanks Wink

Also I would like to see, if it's possible, the assembly code for the read_adc() function.
I searched in the folders of PICC but without success...

Thanks Wink

ok. Sorry I thought the read_adc() function was waiting until the conversion is finished (so the time of 2 conversion woudn't be the same as it is a successive approximation ADC) but in fact it always ...

Hello all,

I need to test the ADC of a 18F458.
So I will put an analog signal on the AN0 pin, then the ADC will convert it, and then I use a MCP4921 or so to get an analog signal.
So I can compar ...

Arf sorry I forgot to put resistors for these leds...Now it works...

Again...sorry for the inconvenience

I have one more question:

I need to switch on a red led if the temperature is over 100°C

I simply did this:

if(temp1 > 100)
{
output_high(PIN_b7) ...

I finally succeeded to get the right temp displayed

I was wrong about the conversion

Now it works great with this code :

temp1= 5*temp*(100.00/1023.00);

Thanks again for your help ...

When I put 64 on the lm35 (0.64V) I get
0083

And then when I put 65 (0.65V) I get
0086

So the temp returned by the read_adc() function is an hexa value...
But then I need to convert it to dec ...

Ooops sorry it works now !

Sorry for any inconvenience