Update.
All of the Ground traces are correct and tied together.
But....After checking again. RA1 WILL NOT work as an output either.
I will swap 2 of the chips. I agree, it is the next step. Not too bad...they are DIP.
Paul
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Re: Can't make RA1 a digital Input on (10 out of 20) 16F887.
Update.
All of the Ground traces are correct and tied together.
But....After checking again. RA1 WILL NOT work as an output either.
I will swap 2 of the chips. I agree, it is the next step. Not too bad...they are DIP.
Paul
Last edited by paulgrut; - 29th September 2013 at 22:33.
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Re: Can't make RA1 a digital Input on (10 out of 20) 16F887.
Swapped the pic on a working board and a not working board....
Problem stayed with the pic. Must be a pic problem.
Just can't help but think I have something configured wrong in the code.
What could cause a pic failure? These boards were built then tested bad. (no extended use) .
Paul
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Re: Can't make RA1 a digital Input on (10 out of 20) 16F887.
have you verified the code in the working and non working PIC's?
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Re: Can't make RA1 a digital Input on (10 out of 20) 16F887.
Static Electricity, short circuit, overload, bad programmer (device). What was the source of those PICs ? Microchip, Mouser, FleaBay ? Lots of Fake Chips out there, maybe you got unlucky that way . . . you gotta ask yourself, "What do electronics manufacturers do with parts that do not meet their high standards?". I would bet they wholesale them to somewhere in unmarked condition as scrap and they mysteriously get marked and marketed as "genuine". I am very dubious about off list suppliers.Originally Posted by paulgrut
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
.
Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
.
There simply is no "Happy Spam" If you do it you will disappear from this forum.
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Re: Can't make RA1 a digital Input on (10 out of 20) 16F887.
They are both the same number.Code:%000000010 %00000010
Google RA1 Digital, and you can see the pain!
if portA are all digital inputs, what value do you get reading portA into a byte?
What happens if you do this:Code:byte = PORTA;
So that portA isn't powering an LED while A1 is being read?Code:HIGH PORTA.0 PAUSE 250 LOW PORTA.0 PAUSE 250
Last edited by Art; - 11th October 2013 at 05:25.
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Re: Can't make RA1 a digital Input on (10 out of 20) 16F887.
This is your code tweaked for a PIC16F690, and it works:
The registers a 690 does not have have been commented out. You will need a pull up on your input pin.Code:#CONFIG __CONFIG _INTRC_OSC_NOCLKOUT & _WDT_ON & _PWRTE_ON & _MCLRE_OFF & _BOR_OFF & _FCMEN_OFF & _IESO_OFF ;__config _CONFIG2, _WRT_OFF & _BOR40V #ENDCONFIG DEFINE OSC 20 ANSEL = 0 ANSELH = 0 ADCON0 = 0 ADCON1 = 0 CM1CON0 = 0 CM2CON0 = 0 CM2CON1 = 0 CCP1CON = 0 ;CCP2CON = 0 portb=0 portc=0 porta=0 TRISA = %00000010 TRISB = 0 TRISC = 0 ;TRISD = 0 ;TRISE = 0 Startup: LOW PORTA.0 PAUSE 250 HIGH PORTA.0 PAUSE 250 IF PORTA.1 = 0 THEN LOW PORTc.1 ELSE HIGH PORTc.1 ENDIF GOTO Startup
Sorry I don't have an 887 to test upon.
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
.
Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
.
There simply is no "Happy Spam" If you do it you will disappear from this forum.
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