12F629 beginning

[Davidpower]

Hi you all again!

I´m already working with pics a little bit thanks to your help but didn´t work with these mcus for nearly a year.
I´m working with 16F628A and this is already ok for me, LCD text and frequency counters even
digitally rev limiters for engines with two BCD rotary switches, works all fine.

BUT: I need a little helper-program and don´t want to waste a 16F628 for this. The 12F629 could do just fine even without crystal etc. I just need one pin as Input and one as output for example for a LED.

So what: I don´t even know how to start anything in PICBasic Pro (got the full version!!)
for example something like blink.pbp .

I can load a hex file into the PIC but i dont know how to adress the pins , start the intern oscillator . Thats for starters.

hey don´t laugh that loud! i´m a mechanical by profession with just a few electrons in my veins.

Thanks in Advance !

[mister_e]

Configuration fuse : http://www.picbasic.co.uk/forum/showthread.php?t=543

This one use GPIO instead of PORTA-PORTB
TRISIO instead of TRISA-TRISB

and you need to disable the analog comparator... same as 16F628 CMCON=7


maybe the following would be enough to start
http://www.picbasic.co.uk/forum/show...t=blink+12F629

[Davidpower]

Thanks Mister_e!
The blink.pbp works with my 12F629 with pin 7 as output which is ok for me.

Leaves one problem: I want to make for example pin 7 (GP0) output and pin 2 (GP5) Digital Input for frequency measure purposes. The program will switch the LED on when the input gets a lower than specified frequency . The program is no problem, just the PIN order.

So theres one thing I see: I have to concentrate on a very small Number of different Pics to get used to them. My favorites: 12F629, 16F628A, 16F876A. That should do for the next years or so. I´ve learned the old school "two transistor 6-18V circuits" when I was 14. Thats 30 years ago. Now I´m wriggling around sportscar engines and some electronics knowledge comes in handy you know.

[mister_e]

I suggest you have a look to 12F683. Really nice one for a 8 pin device, PWM, A/D, Comparator and much more codespace.

16F88 is also a nice one. Nice replacement for the 16F628

16F88x are nice as well... OH well, hard to find my favourite... i had 50-60 different model before in stock. And Microchip seems to release a brand new model each week.

[Davidpower]

Hi Guys,

my program shows a flaw but i dont know where.

depending on the press of a button at GPIO.1 a led should flash defferent at GPIO.0.

************************************************** **************
'* Name : Blink4.pbp *
'* Author : [select VIEW...EDITOR OPTIONS] *
'* Notice : Copyright (c) 2007 [select VIEW...EDITOR OPTIONS] *
'* : All Rights Reserved *
'* Date : 26.09.2007 *
'* Version : 1.0 *
'* Notes : *
'* : *
'************************************************* ***************
@ DEVICE pic12F629, INTRC_OSC_NOCLKOUT ; System Clock Options
@ DEVICE pic12F629, WDT_ON ; Watchdog Timer
@ DEVICE pic12F629, PWRT_ON ; Power-On Timer
@ DEVICE pic12F629, MCLR_OFF ; Master Clear Options (Internal)
@ DEVICE pic12F629, BOD_OFF ; Brown-Out Detect
@ DEVICE pic12F629, CPD_OFF ; Data Memory Code Protect
@ DEVICE pic12F629, PROTECT_OFF

DEFINE OSCCAL_1K 1' Set OSCCAL for 1k
cmcon = 7 ' Comparator OFF


TRISIO = %11111110 ' Set GPIO 0 as output 1-4 as input

if gpio.1 = 1 then
pulsout GPIO.0,10000
else
pulsout GPIO.0,2000

endif

I missed something, but dunno what. The led reacts at the first command line, whether theres a gpio.1 = 1 or gpio.1 = 0
but never at the button itself. it doesn´t find the input.

HELP!

[mackrackit]

If that is all of your code it is stopping at the endif.

MAIN:    'Add this for a loop name.
if gpio.1 = 1 then
pulsout GPIO.0,10000
else
pulsout GPIO.0,2000

endif
GOTO MAIN    'Add this to start the loop again