I am using Matlab R2018a with Simulink and Embedded Coder together with DRV8312 development kit. I was able to set up LED blink, generate PWM signals, use SCI communication and also I successfully run ADC-PWM Synchronization via ADC Interrupt example. All the outputs were correct and everything behaved as expected.
My problem is that all my programs after loading to target processor only execute for few minutes (lets say from 2 to 5 minutes) and then suddenly stop to execute. According to profiling, everything seems to be all right and there are no timing issues.
Could you please provide me with some direction about where to look for the solution? Why all my programs stop executing?
Old fashioned way : for the code (that are running in the target)
Put them in while() ....
this is infinite loop , you have to restart to stop !!!
OR use timers (to sync between host machine clock and target)
Dearr Aparna,
Thank you for your answer. I don't need to use timers to sync host and target because my application runs only on target processor, independently on host PC.
Dear Marton,
Really, the processor does stop the execution. It is not the situation that only driver for PWM is shuted down - all the I/O's just stops.
But I have one more question:
(my setup: Win 10, Matlab R2018a, CCS 7.4, DRV8312 kit). How do you usually set up the setting in: Model Configuration Parameters -- > Code Generation -- > Interface -- > Support? Do you use "absolute time", "continuous time", "variable size signals" and " complex numbers" ? Does it exist some manual with description of how to use these settings and what does it mean?
Dear Aparna,
Thank you for your answer. I don't need to use timers to sync host and target because my application runs only on target processor, independently on host PC.
Dear Marton,
Really, the processor does stop the execution. It is not the situation that only driver for PWM is shuted down - all the I/O's just stops.
But I have one more question:
(my setup: Win 10, Matlab R2018a, CCS 7.4, DRV8312 kit). How do you usually set up the setting in: Model Configuration Parameters -- > Code Generation -- > Interface -- > Support? Do you use "absolute time", "continuous time", "variable size signals" and " complex numbers" ? Does it exist some manual with description of how to use these settings and what does it mean?
My exact procedure:
I opened the example file "c280xx_adcpwmasynctest_ert.slx", set up correct hardware board and a pin for ADC (ADC-B0 from R66 trimer). Then I clicked Code --> C/C++ Code -- > Embedded Coder Quick Start and started that tool. I did all the necessary settings. Than I saved the file, built and loaded it to processor.
After loading this program to f28069 processor it was executing for a while. I was able to see the change of PWM pattern on the oscilloscope when I was changing position of the trimmer so I guess the settings are correct. But after a while (approx. 1 minute) that program stoped to execute.
I still would insist Karol, that you check the code for infinite looping with external triggering or worst case reset ...
Check : Profile and execute at desktop in this link
https://www.mathworks.com/help/simulink/ug/building-and-downloading-the-model-to-a-multicore-target.html
OK , before a minute lapses , try resetting and check if resets , so that you know we are able to control it ...
Dear Marton and dear Apartna, thank you once again for your comments.
We have done debugging of automatically generated code with my colleague Viktor Šlapák. Code was generated correctly, but in one line (this line was different for different examples of generated code) the code for no reason didn't jump to following line but instead jumped out of available memory every time. That jump caused immediately stop of execution.
Fortunately, we have more than one DRV8312 kit, so we tried another kits. These were running correctly without stopping. I did many of different tests, but execution is stopping only with that first one kit which is probably somehow damaged. To conclude, we guess it is a hardware problem.
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