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I think, this Define changes nothing ! The LFSR isn't used in several PIC18F I used...

ADCIN doesn't work on PIC18Fxx31.

Look here:
http://www.picbasic.co.uk/forum/showthread.php?t=13644&p=96903#post96903

Today I trapped into the same hole...

ADCIN doesn't work on a PIC18Fxx31.

I have just written some code to read AN0..AN7 on devices who have this inputs.

Init-Part:


;ADC

S*it

to late - to much wine

Yes - that is know, the tiny 16Fs doesn't have so big tasks to do ... ;-)

No - the datasheet uses a bra $-2 too and Picbasic compiles:


000C12 0003 M loop sleep
000C14 D7FE ...

Does this build a loop, or is there a "heavy load" of data in the code ?
I work with PBP 2.50C.

I've done some own work, but it is not tested:



asm
ClearMem macro Array,Size ;Macro um Speicher zu löschen
lfsr 0,Array
movlw Size
clrf POSTINC0
...

I'm just coding a PIC18F-projekt and there is the need to clear some Arrays or so...

What's about a ClearMem-command (or macro), because it is smarter then a "FOR I=0 to 15:Array[I]=0:Next...

Forget all this TTL-things !
You are in the CMOS-decade !!!!

No one is using TTL-Logic !!!!

Just look in the datasheet and look at the functions of each post-pin !! there is a lot of surprise...

If you are looking for costs ... forget all this old 16F... or 18F...-devices.

Take new cheap dsPic33 or ...J... or ...K... -devices.
The new devices are very cheap, the old stuff is expensive...

I can't see any 100nF-Cs round your PIC - is he resetting ? You can use a portpin to see it!
Maybe it will better the AD-Converter by filtering his AVDD via 56 Ohm and 100nF against ground, but this...

Use an ICL7667 to drive the piezo with 12V in a full-bridge ! It's like using 24V out of a pin against Gnd.

Why are you screaming so loud here ?????

The 877a has options and registers not know by the 877 (without a).
So, switch to the right compiler-option or read the datasheet so declare the register...

Ähhh....

What's about the DIV32-command ?

I think, it won't work:

(ECHO - MIN) / (MAX - MIN) will be between 0 and 1 and will be truncated to 0.

Try:

ZW VAR WORD
ZW=MAX-MIN:RESULT= (ECHO-MIN)*1000:RESULT=DIV32 ZW

That will...

Which port should this be ???????

I think you have to change the file 18F4550.BAS in the PBP-path:



'****************************************************************
'* 18F4550.BAS ...

Change ADCON2 to use more Acquisition time,
Wait after switching the ADC on (ADCON0) 1
delete this ADC-defines !
maybe ... ad a 1nF C to AN1 against ground

Try this:

I2C_Slave: ' I2C slave subroutine
IF R_W Then

I2C_Read: ' I2C read data from us ' THIS SECTION IS WORKING!
IF !d_a Then txbufferindex =...

-------------------------deleted-------------------------

You don't empty the SSPBUF after receiving the adress and the first data-byte gives you an buffer-overrun.....

What ?

It's PBP !

Again ... post your code !

I has gone through this hell too.

I bought a cheap LA (Po.Scope) in order to debug my code. I was looking for errors in PBP too, but at least the error was im my code (and maybe in PBP)...
...

You have to set the CKP-bit even after a WRITE-operation.
Try to disable the HSEROUT-lines.
Maybe this command will alter the TRISC-register, which will kill the I2C-engine.
Sometime, you should...