Date: Fri, 09 Feb 2018 08:54:34 -0700 From: Ian Lepore <ian@freebsd.org> To: Daniel Braniss <danny@cs.huji.ac.il>, "freebsd-arm@freebsd.org" <arm@freebsd.org> Subject: Re: solved, was Re: serial on neopi neo Message-ID: <1518191674.32585.136.camel@freebsd.org> In-Reply-To: <421A858F-AC30-4BE5-8641-E7C8DDDA0493@cs.huji.ac.il> References: <0291231B-F939-4EB9-BD20-AD32B8E768D2@cs.huji.ac.il> <D092D702-D0C8-431F-A727-27674FF5E7AB@cs.huji.ac.il> <421A858F-AC30-4BE5-8641-E7C8DDDA0493@cs.huji.ac.il>
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On Fri, 2018-02-09 at 12:28 +0200, Daniel Braniss wrote: > > > > > On 9 Feb 2018, at 12:02, Daniel Braniss <danny@cs.huji.ac.il> > > wrote: > > > > > > > > > > > > On 8 Feb 2018, at 17:30, Daniel Braniss <danny@cs.huji.ac.il> > > > wrote: > > > > > > hi, > > > after fiddling with the dts file (with the help from Milo), I got > > > 2 serial ports to work(apart from the /dev/ttyu0), > > > but not together! ie, if i try each one individually all is ok, > > > but once I open both of them, only > > > /dev/ttyu1 works, /dev/ttyu2 hangs (i have yet to see if its the > > > output or input) > > > > > > any ideas? > > I have! > > > > I’m using the ‘what i thought’ unused pins (CTS/RTS) to drive some > > leds! > > > > I do set, via tcsetattr(3) to ignore these (ie no modem, no flow > > control) but it seems the driver is ignoring this. > > how can I tell the serial/uart to ignore them? > was sent out too early! > > doing a cfmakeraw(3) is what screwed me up! > now all is ok! That's strange, because I was about to reply to the prior mail suggesting you start with a cfmakeraw() before tcsetattr(). I always start with makeraw then set just the things I want, like: tcgetattr(fd, &t); cfmakeraw(&t); t.c_iflag &= ~(IXON | IXOFF | IXANY); t.c_cflag &= ~(PARENB | CSTOPB | CSIZE | CRTSCTS); t.c_cflag |= CLOCAL | CREAD | CS8; cfsetspeed(&t, whatever); tcwriteattr(fd, TCSANOW, &t); -- Ian
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