Hi Piotr, I'm using internal uart, but I have disabled cron from writing to serial console, and also disabled serial as login tty.
Cheers, Valent. On Tue, Oct 17, 2017 at 1:08 PM, Piotr Dymacz <pep...@gmail.com> wrote: > Hi Valent, > > > On 16.10.2017 22:04, Valent Turkovic wrote: >> >> Hi, >> I'm working with Lede on ar71xx platform (Carambola2 wifi module) to >> gather sensor data over serial, save it and transfer it to "could". >> >> Previous firmware was based on OpenWrt Chaos Calmer but latest one is >> based upon Lede 17.01.01. I'll test it also with 17.01.03 soon. >> >> What I have discovered is that now with using Lede sometimes there are >> missing characters while reading data from serial connection. >> >> Data is not constantly being read, but sensor device is logging data >> usually for 8 hours and then data is read via serial in one big >> "download". During these downloads I have never seen a character go >> missing while Chaos Calmer was used. >> >> What was even stranger is that sometimes I did get these "bad logs" >> (ie ones with few missing characters) but sometimes log download went >> perfectly! >> >> After some head scratching and troubleshooting I managed to reproduce >> this "bug" 100% and it was due to wifi! But only if wifi was enabled >> and not being used! >> >> So if radio was enabled, in sta mode but not connected to AP errors >> would happen! It I would disable wifi or if radio was associated with >> AP then there would be no errors during reading data from serial >> connection. >> >> Is there any explanation for this behaviour? Is this a bug or a >> feature? Is there any change between OpenWrt CC version and Lede that >> could explain this? > > > Are you using AR9331 built-in UART or some external, USB to UART adapter? > > -- > Cheers, > Piotr > >> >> Thanks in advance for any insight and answers, >> Valent. >> >> _______________________________________________ >> Lede-dev mailing list >> Lede-dev@lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/lede-dev >> > _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
