Posted on June 02, 2003 at 09:02Hi guys
I have a huge problem with my ST72334 mcu. In short, the problem is that the mcu crashes when I enable interrupt.
I am writing some data to the EEPROM and to insure that the process is not interrupted, I disable the interrupt before I burn. Afterwards, I enable the interrupt again and the mcu crashes. I can see that since it no longer updates my display. Here is the code:
Code:
DisableInterrupts;
EECSR = EECSR | 0x02;
a[0]= 1;
a[1]= 2;
a[2]= 3;
EECSR = EECSR | 0x01;
while (EECSR & 0x02) {}
EnableInterrupts;
The same problem arrises if I try to disable and enable interrupt somewhere else in the program, so I don't think the burning process fails since I get the correct data in the EEPROM.
However, the problem does not occur when I single step through the program in the emulator. When the mcu crashes, I can stop the emulator and then continue and the program runs fine again! Maybe the problem could be related to some timing issues?
Has anyone experienced problems with disabling/enabling interrupts? I don't get why I cannot enable/disable the interrupt as I please.
Someone, please help.
Best Regards,
Ulrich
