Trying to simulate a input value in ports on MC9S12A64 com codewarrior Full Chip Simulation

[Gustavowd]

Hi, I'm used with I/O simulation in Codewarrior for HCS08 with inputs command or "inputa 10", "inputb 23", etc. How can I do that in Codewarrior 4.6 for HCS12?

Best Regards,
Gustavo

[CrasyCat]

Hello

Simulator for HC12 is based on a different technology than simulator for HC08.

The commands to write to a port (or to memory) are

    wb for write byte,

    ww for write word,

    wl for write long.

For example

  wb 0x0 0x01 will write 1 at address 0x0 (Which is PORTA).

I hope this helps.

CrasyCat

[Gustavowd]

Hi CrasyCat,

Thanks for your help.
This only works if port is set to output. If port is set to input i can't simulate any value. There are some way to simulate a value in a port set as input?

[CrasyCat · Accepted solution]

Hello

Sorry I missed the point that the port was defined as input.

You are right if the port is defined as input port you cannot write to the memory mapped register.

The full chip simulator has internal objects defined, representing the CPU Pins.

In your case you have to use this internal object name.

You can check the pin internal names used by the simulator in the following way:

  - Start the simulator

  - Select "Component" -> "Open". The "Open window Component" dialog is opened.

  - Double click on "Inspect". The Inspect component is opened.

  - Expand the "Object Pool" Tree

PORTA is defined in the MEBI block.

The name of the simulator internal object for Pin0 from PORTA is Mebi.PORTAPin0

The name of the simulator internal object for whole PORTA register is Mebi.PORTAVal

In order to be able to stimulate this Pin, you have 3 solution:

  1. Use the command a (for assign) as follows

           a Mebi.PORTAPin0 = 0x1

      Be careful the simulator is case sensitive on internal object names.

  2. Use the visualization tool

      If you prefer to have a graphical interface to toggle the pin you can use the visualization tool.

        - Add a LED component

        - Set Kind of port to "subscribe"

        - Set Port to display to  Mebi.PORTAPin0

        - Set Visualization tool to Display Mode

     Starting from here you can toggle the Pin by clicking on the LED in the component.

  3. Use the stimulation component and a stimulation file where you refer to the same

      object. Note that this will only work with a professional edition license.

      Please refer to {Install}\Help\PDF\Debugger_HC12.pdf, chapter "HC(S)12(X) Debug Connections"

      section "HC(S)12(X) Full Chip Simulation Connection" -> "True Time I/O Stimulation" for

      information on how to use/create a stimulation file 
    

I hope this helps.

CrasyCat

[Gustavowd]

Very Thanks for your help.
Now I can simulate input port.

Best Regards,
Gustavo