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  • Case ID: 289339
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Serial LTE Modem app in NCS main - glitch on TX before INDICATE

user7170

Hi, 

NCS main, nRF9160 DK

git log -n 1 --oneline
4f916da03 (HEAD -> main, origin/main, origin/HEAD) west.yml: rebase OSS trees

SLM prj.conf changes:
CONFIG_SLM_START_SLEEP=y
CONFIG_SLM_WAKEUP_PIN=6
CONFIG_SLM_INDICATE_PIN=2
CONFIG_NRF_MODEM_LIB_TRACE_ENABLED=y
There is unexpected glitch on TX just beforfe INDICATE is active:
Regards,
Michal
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    Hello Michal, 

    michalm said:
    INDICATE was triggerd by this test scenario:

    I’m not sure if I fully understand this. I assume that the indicate pin was triggered here which causes the glitch, right? 

    52.70 <INDICATE transition> -> High 
52.78 <INDICATE transition> -> Low

    How was the pin triggered? It doesn’t seem to me that the SLM application did it itself? 

    Regards, 

    Markus 

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  • 0

    Hello Michal, 

    michalm said:
    INDICATE was triggerd by this test scenario:

    I’m not sure if I fully understand this. I assume that the indicate pin was triggered here which causes the glitch, right? 

    52.70 <INDICATE transition> -> High 
52.78 <INDICATE transition> -> Low

    How was the pin triggered? It doesn’t seem to me that the SLM application did it itself? 

    Regards, 

    Markus 

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