Date: Thu, 25 Oct 2018 18:28:39 +0300 From: Stefan Parvu <sparvu@kronometrix.org> To: freebsd-arm@freebsd.org Subject: Re: boot loader serial console speed to 9600 Message-ID: <02DDF4DE-2735-4B81-9BB7-E07F60DCB44B@kronometrix.org> In-Reply-To: <1540480146.22340.79.camel@freebsd.org> References: <AA851ADF-BB83-41DC-8411-9C2A1DFA5B28@kronometrix.org> <1540480146.22340.79.camel@freebsd.org>
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> The ability to change serial console speed from loader(8) only works > with x86 BIOS calls (and maybe UEFI, not sure). In general, when uboot > is involved, loader will use whatever serial speed was set up by = uboot. ok, right. Thats exactly probable what we are seeing. We are using a RBPI3B+ with Strato Base [1] which connects to a Vaisala logger [2] which cannot speak 115200 due its restrictions to operate on solar = panels etc. So we are experimenting with FreeBSD 12 on this setup to fetch data from the Vaisala logger.=20 > Why do you want to set the console to such a slow speed? It actually > pisses me off that the standard is as slow as 115200 in the 21st > century; modern uart chips have no problem running at speeds in the 1- > 12mbps range. Because I need to connect the Vaisala logger (which cannot speak 115200)=20= to the RBPI3B+ to read data. Using a FDTI cable is simple and probable = will work for us. Is there anything else we could try to configure ? You mean we could = configure the uboot module ? How ? Any pointers ? Thanks a lot for tips, Stefan [1] https://www.sferalabs.cc/strato-pi/#models = <https://www.sferalabs.cc/strato-pi/#models>; [2] = https://www.vaisala.com/sites/default/files/documents/QML201C-Datasheet-B2= 10718EN.pdf = <https://www.vaisala.com/sites/default/files/documents/QML201C-Datasheet-B= 210718EN.pdf>=20
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