Program compiles and writes but can't run

[jellis00]

I am new to PICBasic Pro and the PICkit2 Starter Kit which I just purchased. I could get the PCBDemo to run via the PICkit2 with the PIC16F690 that came on the Demo board. However, when I tried run one of the sample programs that comes with PCIBASICPro Demo (SLEEP.bas), it compiles OK with MCS and I can import the resulting hex file into PICkit2 and target the device. It appears to write to the device OK, although the Verify finds an error mismatch in the Data memory, which I presume is not critical since the device has not executed the program yet or created any stored data.
However, when I try to run the program that was written to the device by clicking the box for /MCLR the program doesn't run. Here is the code I am trying to run which is very simple. Can anyone advise me what I may be doing wrong :in trying to run this program in PICkit2??
'SLEEP Command
'Slowly blink LED using low power mode delay

LED CON 16 'Identify LED pin

Loop:
TOGGLE LED
SLEEP 10
GOTO loop

[Archangel]

There is a little check box called ON listed below the text, VDD PIC Kit 2, it must be checked to power your demo board from the usb.

[Archangel]

There is a little check box called ON listed below the text, VDD PIC Kit 2, it must be checked to power your demo board from the usb. Here is a sample that works on that board.

;@MyConfig =  
@MyConfig = _INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_ON  
@MyConfig = MyConfig & _MCLRE_ON & _BOR_OFF 
@ __config  MyConfig 

DEFINE OSC 4
PortA = 0
PortB = 0
PortC = 0
TRISA = 1
TRISB = 0
TRISC = 0
i var byte
ANSEL = 0
ANSELH = 0
CM1CON0 = 0
CM2CON0 = 0
main:

portc = 0
pause 500

for i = 1 to 15; step -1


portC = i
i=i  << 1 
pause 250
next i
sound portB.6, [120,2,124,2,123,2,121,2]
sound portC.6, [120,2,124,2,123,2,121,2]
goto main
end

[jellis00]

I already had the VDD PICK2 On box checked to power up the Demo board.

I tried to compile the code sample you provided that you say runs with this Demo board and I get a error 118...Overwriting previous address contents., and a large number of Errors #113..Symbol not previously defined.

Any other suggestions as to how to get the program to run??

[Archangel]

I already had the VDD PICK2 On box checked to power up the Demo board.

I tried to compile the code sample you provided that you say runs with this Demo board and I get a error 118...Overwriting previous address contents., and a large number of Errors #113..Symbol not previously defined.

Any other suggestions as to how to get the program to run??

Ok, that is easy. In the PBP root directory there are files named for the PIC you are using, ending with the suffix .inc and in these files are "DEFAULT" config statements, like the one at the beginning of the code I listed. Open the 16F690.inc file located there and find the config line, The MPASM config line will say this

__config _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_ON & _CP_OFF

Add an ; semicolon like so

;__config _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_ON & _CP_OFF

and that will solve the overwrite issue, you will for evermore have to include a config line into the code you write for this chip unless you change it back. OR you might try commenting it out in my code. Let's face it, the DEFAULT configs are there so noobies can get some code to run without knowing anything about config fuses, personally I think they serve to confuse people more than help, better I say, put this information in the manual and all the books on PICs.<br>By putting the configs in your code, it becomes easy to change oscillator, and MCLRE statements etc . . .<br><br>Now as for Symbol not previously defined, 2 main causes are inaccurate choices of symbols like BOR or MCLRE and others too, and The other MAIN reason is not having selected the correct PIC in Microcode Studio, and since I KNOW this code is correct, I would say that is the problem there. I notice it gets changed sometimes (which PIC is selected ) from the last I ran it. So you need to always check that first on compile failure with symbol error.

[jellis00]

OK, I understand about editing the include file.
However your instructions on selecting the right PIC in MicroCode Studio confuse me....I went thru all the menus in MSC and couldn't see where to do that. Please advise how I do that in MSC.

[jellis00]

Joe S., I commented out the line in the include file per your instructions and tried to compile again and still get all the 113 errors. ?????
Did I mention that I am using the PICBASIC PRO Demo compiler that came with the PICkit2 Starter Kit and not a production version of PICBASIC PRO Demo.....would that make a difference?

[mackrackit]

OK, I understand about editing the include file.
However your instructions on selecting the right PIC in MicroCode Studio confuse me....I went thru all the menus in MSC and couldn't see where to do that. Please advise how I do that in MSC.

Do you have the "compile and program" tool bar turned on?
If not go to view and select it from the tool bar option.
Then you should see a drop down list box with the supported chips.

[BigWumpus]

LED CON 16 'Identify LED pin

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

[azmax100]

jellis00,

I do have the same problem before if I used MPASM to compile. Check your setting and don't use MPASM to compole.
I dont know whats the problem cause I'm still new but my program run smoothly without using MPASM. You should give a try.