I have a Axe090 project board. I can't get it to work.

[xtech007]

thanks again for your support ..
I have been fighting this thing through the weekend.
I'm able to get the chip programed but the LED are not responding.
I use the code the datasheets describe and the wiring.
I want to use a switch and ligth the led.
Used the project board switch and leds but no luck also the breadboard and my own wiring and still no luck.
Ohhh i'm using the 28X1 chip
this is the code i used:

main: ‘ make a label called ‘main’
if pin3 = 1 then flash ‘ jump if the input is on
goto main ‘ else loop back around

flash: ‘ make a label called ‘flash’
high 4 ‘ switch output 4 on
pause 2000 ‘ wait 2 seconds
low 4 ‘ switch output 4 off
goto main ‘ jump back to start

Question: When the code specify pin3 does it mean input 3 or leg 3 ?
Is there something wrong with the code?

Once again thank for the support. Thank you !!!!!

 

[BeanieBots]

pin3 means input 3. NOT leg 3.
Similar for outputs. The code assignments refer to outputs NOT physical legs.

Get the LED working first. Just write a simple program to make it flash.
Once that works, you can eliminate that part.
Double check that you have a pull-down resistor on your input.

 

[BCJKiwi]

All code and programming refers to inputs (or outputs), never to legs.

If you check out the diagrams in manualC, the numbers inside the chip rectangle are legs, the numbers outside are ports.

 

[Technical]

On the AXE090 connect one wire from the IN3 connection above the chip to the SW1 connection on the right. Then connect a second wire from the OUT4 connection to the L1.

Assuming the AXE090 has been correctly assembled your program above should work fine with the on-board switch1 and LED1.

If it does not, double check you have soldered the two resistor arrays A1 and A2 around the correct way (printed text towards LEDs)!

 

[xtech007]

Thanks Once again !!!!

You guys are great !!!
Thanks for the quick response.
Following your instructions I found out the user was at fault.
I had welded the A1 & A2 resistors facing the wrong way (the letter facing away from the LEDs)

Using the board switches and LED works great.
But when I do my own wiring conections using the breadboard I can not get the LED to work.
I thing it may have to do with the pulldown resistor and the 300R resistor.

Can I use any regular resistor for the pulldown resistor?
Does any one know the value of the 300R resistor and where can I buy them?

 

[BCJKiwi]

R is shorthand for Ohms;

300 Ohms = 300R
1000 Ohms = 1k
1200 Ohms = 1k2
120000 Ohms = 120k
etc

Any electronics store should have them.
Don't know where in the world you are so can't suggest a supplier.

 

[xtech007]

Thanks Again !

I'm in Florida U.S.A
Once again thank you so much for your help !

 

[sputz]

I had welded the A1 & A2 resistors facing the wrong way (the letter facing away from the LEDs)

Resistors are not polarised, soldering it either way should be fine.

 

[sputz]

I'm in Florida U.S.A
Once again thank you so much for your help !

Get it from Radioshack. I don't think they have a 300Ohm resistor, but they will have 330 which is good enough.

 

[BCJKiwi]

@Sputz (Post #8)
The AXE090 is a starter board and has an 8 pin 330R resistor array so does have to go in the right way round.

 

[xtech007]

Once again you guys are Right !

I just Unsolder the 300R resistor from the project board and reinstalled it arround and it did not work. For some reason the Power LED would turn off when the switch was pressed.

I tryed Once again with the letter facing the LED's and like magic it worked Fine.

In conclusion;
I only retrace the steps so in the future a similar mistake can be easily recognize not challange anyone.

thank you for your Support and the great forum to keep us Inform.