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mahapushpa
mahapushpa
Associate II
January 4, 2014
Question

strange bevaviour of firmware in stm32F100VB

Posted on January 04, 2014 at 16:16

I am using Keil 4.72, STM32F100VB with STLinkV2 for debugging purposes. When system is in debug mode, it looks perfectly but if I flash the chip and run in non debug mode (with SWD connected or removed), firmware do not work properly.

Does anybody seen symptoms like this, I do not change any setting of tool like optimisation etc.

Thanks in advance for any hint to look the problem.

#stm32f100-swd
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2 replies

Tesla DeLorean
Tesla DeLorean
Guru
January 5, 2014
Posted on January 05, 2014 at 03:08

I guess I'd look at how structures are initialized, especially auto/local variables. Make sure the stack is adequately sized, and there isn't any timing sensitive code.

Can you share some code that shows this type of behaviour?
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mahapushpa
mahapushpaAuthor
Associate II
January 5, 2014
Posted on January 05, 2014 at 08:57

Yes. You are right, it was due to local/Auto variable. It was not initialize in some cases properly and create the problem. After init, it is fixed and system is working uniformly.

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