Why my model is not running properly on my raspberry pi ? (PIGPIO.h test)

Question

Sylvain 2020-12-23

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/701312-why-my-model-is-not-running-properly-on-my-raspberry-pi-pigpio-h-test

评论： Sylvain 2020-12-23

pigpio_test.slx

Hi,

I have build the attached model to run on the raspberry pi. The model contain a S-function builder to try the library PigPio. The aim is to modify the frequency up to 20 kHz, by modifying the clock and the frequency. please refer to : http://abyz.me.uk/rpi/pigpio/cif.html#gpioCfgClock and http://abyz.me.uk/rpi/pigpio/cif.html#gpioSetPWMfrequency

The update code is link to the lower display, to display. The output just return:

out[0] = gpioGetPWMdutycycle(pin[0]);

I have also use the lnker -lpigpio, as suggested here: https://uk.mathworks.com/matlabcentral/answers/311256-s-function-builder-raspberry-pi?s_tid=prof_contriblnk

Now I am using tune and monitor, the code compile and start running, but the time is remaining to 0 :o

After 5 seconds, the program stop, and I get this message in the command window:

Warning: Error returned by XCP master: XCP Master internal error: No slave connected 
> In coder.internal.xcp.extmode_xcp_open
  In coder.internal.xcp.extmode_xcp_open
  In coder.internal.xcp.extmode_xcp_open
  In ext_open_intrf>i_UserTargetStopped (line 1038)
  In ext_open_intrf (line 492) 
Warning: XCP Master internal error: Busy(0) or no timeout(2) for 252 
> In coder.internal.xcp.extmode_xcp_open
  In coder.internal.xcp.extmode_xcp_open
  In ext_open_intrf>i_UserTargetStopped (line 1038)
  In ext_open_intrf (line 492) 
>> 

Does anyone know why i get this?

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Sylvain 2020-12-23

After digging a bit, the code compile and time is running now, using a default PWM block. However, the clock is not updated. The PWM block seems to call the gpioInitialise() from pigpio.h. Can Mathworks confirm this is the library they are using ???

This looks really odd.