Renesas H8S/2628 Technické informace stáhnout pdf (Strana 241)

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5.11 Executing Your Program

This section describes how you can execute your program's code. You will learn how to do this by either running

your program continuously or stepping single or multiple instructions at a time.

5.11.1 Running from Reset

To reset your user system and run your program from the reset vector address, choose [Debug->Reset Go], or

click the [Go Reset] toolbar button (

The program will run until it hits a breakpoint or a break condition is met. You can stop the program manually

by choosing [Debug->Halt], or by clicking the [Stop] toolbar button (

Note: The program will start running from whatever address is stored in the Reset Vector location. Therefore it

is important to make sure that this location contains the address of your startup code.

5.11.2 Continuing Run

When your program is stopped, the HEW will display an yellow arrow mark in the gutter of the line in the editor

and [Disassembly] windows that correspond to the CPU's current program counter (PC) address value. This will

be the next instruction to be executed if you perform a step or continue running.

To continue running from the current PC address, click the [Go] toolbar button (

), or choose [Debug->Go].

To continue running from a specified address which is not the stop address, change the PC value in one of the

following ways, and click the [Go] toolbar button (

) or choose [Debug->Go].

• Change the PC value in the [Register] window. Refer to section 5.4.3, Modifying Register Contents.

• Place the text cursor (not the mouse cursor) to a target line in the [Source] or [Disassembly] window, and

choose [Set PC Here] from the popup menu.

5.11.3 Running to the Cursor

Sometimes as you are going through your application you may want to run only a small section of code, that

would require many single steps to execute. You can do this using the Go To Cursor feature.

How to use the Go To Cursor

1. Make sure that a [Source] or [Disassembly] window is open showing the address at which you wish to stop.

2. Position the text cursor on the address at which you wish to stop by either clicking in the [Address] field or

using the cursor keys.

3. Choose [Go To Cursor] from the popup menu.

The debugging platform will run your code from the current PC value until it reaches the address indicated by

the cursor's position.

Notes: 1. If your program never executes the code at this address, the program will not stop. If this happens,

code execution can be stopped by pressing the Esc key, choosing [Debug->Halt], or clicking on the

[Stop] toolbar button (

2. The Go To Cursor feature requires a PC breakpoint - if you have already used all those available, then

the feature will not work.

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Renesas H8S/2628 Technické informace Strana 241