8-bit Microcontrollers中的主题 Re: Problems with CodeWarrior Chip Emulation and MC68HC908QT4 AWU

Problems with CodeWarrior Chip Emulation and MC68HC908QT4 AWU

F_Wolf — Wed, 10 Nov 2010 01:01:39 GMT

Hi, as described in the subject I have some problems getting the Auto Wark Up working for my HC908QT4. I checked if the AWUIE is enabled, and it is. Nevertheless my generated method is never been called after the MCU enters the stop mode. Any suggestions what i'm doing wrong?

Regards Wolf

Using Version 5.9.0 Build 5292 of CodeWarrior

Re: Problems with CodeWarrior Chip Emulation and MC68HC908QT4 AWU

F_Wolf — Wed, 10 Nov 2010 20:59:04 GMT

The CW i have installed is 6.3.1 the 5.9 mentioned above is from the about Tab of CW, the 6.3 from the installer.

But to fromulate my question more general:

Is the AWU functionality in general implemented in CW? I have the feeling it is not.

Regards

Wolf

Sorry for writing a new post, but editing the old seems not permitted anymore.

Re: Problems with CodeWarrior Chip Emulation and MC68HC908QT4 AWU

bigmac — Thu, 11 Nov 2010 00:30:29 GMT

Hello,

I have never tested it, but it would not surprise me that stop mode, and therefore AWU operation, would not be simulated under FCS. If this is so, I would assume that the stop instruction would be ignored, and the simulated execution would continue with the following instruction. Is this what you have observed? However, I would expect that an interrupt for the associated timer would be simulated.

As far as I can see, little would be gained by simulating stop mode - this ultimately needs to be tested on the actual hardware.

Regards,

Mac

Re: Problems with CodeWarrior Chip Emulation and MC68HC908QT4 AWU

F_Wolf — Thu, 11 Nov 2010 04:28:30 GMT

Hi,

executing the STOP instruction in the FCS will halt the CPU and it don't seem that an interrupt is generated.

But maybe my configuration of the chip is wrong so that this leads to the described problem?

my setting is

CONFIG1: COPRS=0,LVISTOP=1,LVIRSTD=0,LVIPWRD=0,LVI5OR3=1,SSREC=0,STOP=1,COPD=1

CONFIG2: IRQPUD=0,IRQEN=0,??=0,OSCOPT1=0,OSCOPT0=0,??=0,??=0,RSTEN=0

PTA: PTA5=0,PTA4=0,PTA3=0,PTA1=0
PTAPUE: OSC2EN=0,PTAPUE5=0,PTAPUE4=0,PTAPUE3=0,PTAPUE1=0
DDRA: DDRA5=1,DDRA4=1,DDRA3=1,DDRA1=1,DDRA0=0
KBIER: AWUIE=1

KBSCR: ACKK=1