Different results using EB006 and my other burner with same

[Werner]

I have a program that works as expected with simulation and on proto board. When I burn the same 12F629 chip with my EB006 I get a different result? Specifically bit 4 does not seem to work? I am using the Led E-Block board for testing. And thats another thing the D0-D7 means nothing to me. I looked in the LED data sheet but it makes no reference to what pin may go to D0-D7?
Thanks for the help!
Werner

[JohnCrow]

Hi Werner
The D0 - D7 on the led board just means Diode 0 - Diode 7 (Could just as easily have been marked LED 0-LED7)

LED 0 is connected to bit 0 - LED 7 is connected to bit 7 ( on which ever port the board is connected to)
Dont forget not all ports have all bits available as output, or in the case of port E on the 16F877A for example is only 3 bits.
Check the PIC datasheet.

Which port are you trying to use the LED board on as this could be your problem.

[medelec35]

When I burn the same 12F629 chip with my EB006 I get a different result? Specifically bit 4 does not seem to work?
Werner

Have you got EB006 V6 or V7?
If I could be wrong as not tried with 8 pin device, connecting bit 4 to port.
With V6 you cannot use bit4 since that is part of the osc, and connects to the boards xtal.
With V7 you will need move the jumper(J18-J19) thats positioned in-between the LED and xtal from osc to A6&7 position.

D0-D7 means nothing to me. I looked in the LED data sheet but it makes no reference to what pin may go to D0-D7?

D0 to D7 are just the bit reference.
So if LED connected to portA
D0 = RA0
D5 = RA5 etc.

If connected to port B
D0= RB0
D5 = RB5 etc.

Martin.

Edit: just noticed John has just beat me to it, so information may be duplicated.

[Werner]

Thanks John and Martin, Ok I have to make a correction. It was my mistake in thinking that FC was burning differently on my EB006 and my other burner. I had accidentally use two different files. Oops my bad. I did try changing the jumper for (J18-J19) but is seems that it does not behave any differently in regards to bit 4 not working. Martin I think you are on to something about the OSC? As you know the pin 3 on the 12F629 chip is GP4/OSC2 and that is the pin that appears not to be working on my EB006/LED Board. I think I should be getting D4/ bit4 led to light but it doesn’t? Like I said it does work on my proto board?
Thanks again for the help Guy’s

Werner

[Benj]

Hello,

Are you aware that 8, 14 and 20pin devices on the EB006 board do not use the correct I/O ports due to the way the chip families have been designed.

For an 8-pin device the I/O appears on the following port pins.

PIN2 - RA5 -> OSC1 / PORT A7 (j18, j19)
PIN3 - RA4 -> OSC2 / PORT A6 (j18, j19)
PIN4 - RA3 -> MCLR / Reset Switch
PIN5 - RA2 -> PORT B2
PIN6 - RA1 -> PORT B6
PIN7 - RA0 -> PORT B7

[Werner]

Thanks Ben! This explains a lot I will play around with the ports to see if I can get the results I am looking for.
Werner

[medelec35]

You could also take a look at page 13 of this:
http://www.matrixmultimedia.com/datashe ... 6-30-7.pdf

[Werner]

Thanks Ben and Martin!! I got everything working!
Werner