Re: [beagleboard] RS485 with CBB-Serial-r02

On Tue, 16 Jun 2020 20:57:11 -0400, Steve Lentz writes: >RS-485 is a multi-drop bus using 2 or 4 wires. It does not include >hardware flow control and hence the RTS signal is not used. yes and no; those signals have no native meaning in rs485. but if you've got a 2-wire rs485 bus then you're

Re: [beagleboard] RS485 with CBB-Serial-r02

My understanding (and someone can PLEASE) correct me if I'm wrong) is that although there is a user space interface to RS485 via ioctl, the drivers may not support it. At best you have to recompile the kernel with the "other" driver, but that does not support DMA. There seem to be hooks to

Re: [beagleboard] RS485 with CBB-Serial-r02

RS-485 is a multi-drop bus using 2 or 4 wires. It does not include hardware flow control and hence the RTS signal is not used. If you have a device that needs RTS, it is probably RS-232. Look at any wiring diagram for RS-485 connections. > On Jun 16, 2020, at 8:50 PM, Micka wrote: > >

Re: [beagleboard] RS485 with CBB-Serial-r02

Can someone explain me why we can't use the rts signal for the rs485 ? Le mer. 17 juin 2020 à 00:24, Bekir Bahadir a écrit : > Also Im trying to get rs485 work over gpio with active high when > transmitting. Can anyone help? Ive creqtet a net dts with the gpios for > enabling the transmitter.

[beagleboard] eQEP Python error on PocketBeagle

I'm trying to use the encoders via Python: from Adafruit_BBIO.Encoder import RotaryEncoder, eQEP2 import time # Instantiate the class to access channel eQEP2, and initialize # that channel myEncoder = RotaryEncoder(eQEP2) # Get the current position while True: cur_position =

Re: [beagleboard] RS485 with CBB-Serial-r02

I spent ages trying to get RS485 to work. Maybe it's possible, but if you give up I found that RS485-USB devices that use FDDI drivers work really well out of the box. For example, this works well:

[beagleboard] RS485 with CBB-Serial-r02

Also Im trying to get rs485 work over gpio with active high when transmitting. Can anyone help? Ive creqtet a net dts with the gpios for enabling the transmitter. Fo i need to patch the kernel for rs485 or is it alreqdy included in the omap driver? -- For more options, visit

Re: [beagleboard] Re: B.B.B. turn off automatically

evilwulfie, You obviously have more experience in this area then I. I will back off from this topic. Ken -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this

[beagleboard] Re: Problems Reconfiguring GPIO's

Hi! Am Dienstag, 16. Juni 2020 00:08:18 UTC+2 schrieb P B: > I'm a little stuck here. > Drop all than device tree and config-pin stuff. Instead use libpruio for pinmuxing. Once installed you can configure the pins from user space in your source code,

Re: [beagleboard] Re: B.B.B. turn off automatically

I have used well over 200 bones Once and a while there is one bone that just fails to keep running I toss it in the "for testing only" bin and use another one some bones just fail On 6/16/2020 8:17 AM, KenUnix wrote: I am not saying this is the problem but have you considered upgrading to

[beagleboard] Re: Problems Reconfiguring GPIO's

On Mon, 15 Jun 2020 15:08:18 -0700 (PDT), in gmane.comp.hardware.beagleboard.user P B wrote: >Unfortunately, I also want >P9-12 (GPIO 60) as pulldown output to turn on pump 1 using a relay, where >P9-12's default state is pullup input, and >P9-15 (GPIO 48) as pulldown output to turn on pump 2

[beagleboard] Re: B.B.B. turn off automatically

I am not saying this is the problem but have you considered upgrading to the current image? It sure sounds like either a temperature or supply issue. My Beaglebone is happy with only a 5V 2Amp supply. If you touch the chips on the board after its been on for several hours are they getting

[beagleboard] Re: B.B.B. turn off automatically

root@roxanne:/srv# cat /etc/dogtag BeagleBoard.org Debian Image 2018-10-07 root@roxanne:/srv# uname -a Linux roxanne 4.14.71-ti-r80 #1 SMP PREEMPT Fri Oct 5 23:50:11 UTC 2018 armv7l GNU/Linux On Monday, June 15, 2020 at 8:25:57 PM UTC+4:30, KenUnix wrote: > > > Are you running on an external

[beagleboard] Re: B.B.B. turn off automatically

I useing debian V9.5 and nodJS V10 I useing 5V 3A power supply, I thing is enough to power the peak currents On Monday, June 15, 2020 at 6:45:44 PM UTC+4:30, Graham Haddock wrote: > > Could be old software. Some earlier versions of Debian did that. > What version software are you using? > > Could

Re: [beagleboard] Re: Graphical Desktop with keyboard & display

On Monday, 15 June 2020 16:57:30 UTC+3, evilwulfie wrote: > > I am fairly sure he has a display manager installed as VNC will not > function > without one. > AFAIK VNC can be configured to work either independently or with a display manager. Depends on how Bernard has configured the VNC server