Hello, we have a problem with our UART data monitoring. We’re using le_fdMonitor_Create to monitor the device file /dev/ttyHS0. The event either triggers always, sometimes it is triggered a few times but stops working then or it is not triggered at all. We implemented a software watchdog which tries…

Finally we found the issue. It had two reasons: Something got corrupted heavily as described here: fdMonitor only works sporadically - #37 by HudriWudri . Please have a look at that stuff because this must not happen!!!. From my point of view there’s something deeply wrong if actions like that corr…

if you want to isolate whether this is related to legato API, you can simply use open(),read(),write() generic API to control the UART: [image] UART flow control with WP7608 Maybe you can run my sample application attached here. It will change the status of CTS every th…

I created this standalone solution which either monitors the UART via fdMonitor or in a while loop, depending on the USE_MONITOR switch. Both result in the same behaviour as descriped originally. To me it seems like sometimes the device is not ready at startup because if the UART app is started auto…

do you see problem with generic API like open(),read(),write() to control the UART? You can also try the following command to disable the UART auto suspend behavior : echo -1 > /sys/devices/78b0000.uart/power/autosuspend_delay_ms [image] Problem with Reading UART …

No, that didn’t work either. Maybe it’s a problem with some files which were manipulated. How can I reset the chip to its default setup?

Could it also be a problem that I removed all apps with this command? Because on a fresh chip it seems to work. for a in $(app status | cut -d" " -f2); do app stop $a; app remove $a; done

You can downgrade to r12 and reset the module to default state [image] Wp76 root password IoT Modules WP Series hi! i did it already but it still asks for password why it do…

Thanks we will use a new chip for the moment and try to reflash the broken ones later. It seems like the system was corrupted at some point.

Ok, it still gets corrupted for some reason. Is there something that gets reset on a hard-reset? Because after a hard-reset it works again until the next reboot.

do you see problem with generic API like open(),read(),write() to control the UART? Does it relate to this issue where data is received during reboot? [image] Kernel BUG at /usr/src/kernel/kernel/time/timer.c:806! Legato Application Framework I cannot reproduce this in ma…

I’m really getting frustated with these tools… I downloaded the swiflash tool from http://downloads.sierrawireless.com/tools/swiflash/swiflash.zip via wget (because for some reason the download through Brave didn’t work; neither on Windows nor on Linux). I ran swiflash.bat -m wp76xx -r under Windows…

fdMonitor only works sporadically

Legato Application Framework

jyijyi February 22, 2023, 2:05pm 2

if you want to isolate whether this is related to legato API, you can simply use open(),read(),write() generic API to control the UART:

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fdMonitor only works sporadically

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