Need help with SX48

Bill Z

To All


·I am kind of new to the SX· micro controller and I am having trouble getting the SX48 to work.

·I would like to thank all of you for your posts, books magazine articles they have helped me quite a bit.

·I am switching from a SX28 to a SX48. I am having trouble getting input or out puts to work I had no problems with the SX28.

I am using an USB· SX-Key and a SX48 Proto Board.
I can get the program loaded I just can’t get any output or input.
What device settings would I need for the SX48 and is there anything else that is different from the SX28.

Thank you for your help

Bill

RobotWorkshop

There are a few differences but going between the two chips isn't too hard. Before anyone can really help you need to explain a bit more what you are trying to do:

- Are you writing your program in SX/B (compiled BASIC) or in assembly?

- What are you using as your clock? Resonator, crystal, or internal?

- Some of the example assembly programs use low memory for the first couple of variables. This may not be valid for the SX48 as it has two extra 8-bit ports.

- What input/output do you expect?? Are there LED's connected, switches, etc. How is it wired?

- If you post your code that will help!

pjv

Hi Bill;

As ROBOT said, without your code posted it is difficult for any of us to help much; however, if it is I/O that is troubling you in moving from the SX28 to the SX48 then I suspect you have overlooked the differences in the M codes for setting up the direction (and other) I/O registers. The SX28 uses M=$0F and the SX48 uses M=$1F.

Cheers,

Peter (pjv)

Bill Z

Thank you for your help. I am programming in SX/B I am using the internal clock (no external chips crystal on the proto board. I am using 10 k pullup resistors on the input switches and 330 ohm limiting resistors on the led.

Here is the rough test code.

DEVICE SX48 ‘ not sure what this should be.

InputA PIN RB.0 INPUT
OutputA PIN RC.2 OUTPUT

Main:

OutputA = InputB


Goto Main


Bill Z

Bean

You need your device line to be "DEVICE SX48, OSC4MHZ" to indicate that you are using the internal oscillator.

Bean.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Did you know that 111,111,111 multiplied by 111,111,111 equals 12345678987654321 ?

www.iElectronicDesigns.com

·

Bill Z

Thank you all for your help

I am now able to use inputs and outputs.

Bill Z