Motorola USB08 Betriebsanleitung PDF herunterladen (Seite 95)

QUICK TOUR

A quick introduction to the capabilities of Xplor8.

The tour assumes that you are able to unlock FLASH memory on the MCU you are using - either

because the chip is already fully erased or because you know the security byte sequence. If you are not

able to unlock the chip, you will have to mass erase it first - see the last item below.

1. Listing Memory

If you are able to list (or dump) memory contents then at least you know that the PC is interfacing

correctly with the monitor firmware on the MCU. Type the following example of the List Memory

command (page 50) on the command line, and press <Enter>:

L 0 <enter>

Note the space between the 'L' and the zero. This should produce a listing of the first sixteen addresses

on the MCU. Why sixteen? - because this is the default for the number of locations to list. It may be

changed on the Settings>General tab. If you type:

L 0 2 <enter>

then you will get a listing of the first three locations only. Note that address arguments supplied to

Xplor8 commands always specify an inclusive range.

2. Reading a control register

Try using the Register Display and Change command (page 55). Type the following on the command

line, but note that some MCUs have a CONFIG1 and CONFIG2 register, so you may have to change

the name to suit:

R CONFIG <enter>

This should produce something like:

001F CONFIG [$00,# 0] 0 0 URSTD LVID SSREC COPRS STOP COPD

Note that the individual bits are named (where appropriate) and displayed in bold if set.

3. Loading an S19 file

Try loading an S19 file to FLASH memory. The 'Samples' sub-folder of the Xplor8 installation folder

contains a file named 'Looptest.asm' which has been assembled to start at $FB00 in the file

LOOPTEST.S19. If you have free FLASH at this address (press Ctrl+M for the memory map), then

you can proceed to load it immediately, otherwise it will require re-assembling at a suitable address.

The files LOOPTEST.LST and LOOPTEST.SYM are also included in the folder. To load the file,

click the 'Load S19 to MCU' speedbutton, and navigate to the 'Samples' sub-folder. Open the file

LOOPTEST.S19. The output window should display the messages:

1 2 ... 90 91 92 93 94 95 96 97 98 99 100

Keine Kommentare

Motorola USB08 Betriebsanleitung Seite 95