Honestly I don't know. I though this might be useful info :) Three is no problem to disable I2C-2, but I am using those pins for CAN0. That is why I want to use custom gpio to drive RS485 DE which doesn't work.
2016-04-25 21:56 GMT+01:00 William Hermans <[email protected]>: > *cat /proc/tty/driver/serial* > > *serinfo:1.0 driver revision:* > *0: uart:8250 mmio:0x44E09000 irq:158 tx:2451 rx:0 RTS|CTS|DTR|DSR* > *1: uart:8250 mmio:0x48022000 irq:159 tx:24 rx:0 CTS|DSR|CD|RI* > *2: uart:8250 mmio:0x48024000 irq:160 tx:0 rx:0 CTS|DSR* > *3: uart:unknown port:00000000 irq:0* > *4: uart:8250 mmio:0x481A8000 irq:161 tx:2 rx:1 brk:1 CTS|DSR* > > *5: uart:unknown port:00000000 irq:0* > > What is this supposed to mean ? That says UART0 has RTS, CTS, etc, but > they're not connected to anything. So the CTS on UART1 means nothing. > Because it's connected to I2C-2, which I'm sure you would have all kinds of > fun disabling I2C-2 . . . > > > On Mon, Apr 25, 2016 at 1:14 PM, 'Artur Festyn' via BeagleBoard < > [email protected]> wrote: > >> cat /proc/tty/driver/serial >> serinfo:1.0 driver revision: >> 0: uart:8250 mmio:0x44E09000 irq:158 tx:2451 rx:0 RTS|CTS|DTR|DSR >> *1: uart:8250 mmio:0x48022000 irq:159 tx:24 rx:0 CTS|DSR|CD|RI* >> 2: uart:8250 mmio:0x48024000 irq:160 tx:0 rx:0 CTS|DSR >> 3: uart:unknown port:00000000 irq:0 >> 4: uart:8250 mmio:0x481A8000 irq:161 tx:2 rx:1 brk:1 CTS|DSR >> 5: uart:unknown port:00000000 irq:0 >> >> >> 2016-04-25 21:12 GMT+01:00 Artur Festyn <[email protected]>: >> >>> I can't use RTS/CTS pins on UART4 because I need HDMI. >>> New RS485 patches suppose to help to use any gpio as RS485 RTS and in >>> fact any gpio for any UART as RTS/CTS. >>> >>> >>> >>> >>> 2016-04-25 21:00 GMT+01:00 evilwulfie <[email protected]>: >>> >>>> any reason you want to use uart1 ? >>>> >>>> if you use uart4 you can use the whole uart tx rx and rts. trying to >>>> bitbang rts for rs485 on uart1 sounds hard >>>> >>>> >>>> >>>> On 4/25/2016 12:24 PM, 'Jan Kinkazu' via BeagleBoard wrote: >>>> >>>> So i compiled (bb-kernel, all patches) and installed 4.5.2-bone4 >>>> I have modified am335-boneblack.dts and compiled it. >>>> >>>> #include "am335x-peripheral-ttyS1.dtsi" >>>> #include "am335x-bone-pinmux-ttyS1.dtsi" >>>> >>>> &am33xx_pinmux { >>>> uart1_pins: pinmux_uart1_pins { >>>> pinctrl-single,pins = < >>>> /* P9_23: uart1_de */ >>>> BONE_P9_23 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) >>>> >; >>>> }; >>>> }; >>>> >>>> &uart1 { >>>> pinctrl-names = "default"; >>>> pinctrl-0 = <&uart1_pins>; >>>> status = "okay"; >>>> rts-gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>; >>>> rs485-rts-active-high; >>>> rs485-rx-during-tx; >>>> rs485-rts-delay = <1 1>; >>>> linux,rs485-enabled-at-boot-time; >>>> }; >>>> >>>> RS485 doesn't work, what do I do wrong? >>>> >>>> Kind regards >>>> >>>> >>>> On Friday, 12 February 2016 15:33:40 UTC, Taceant Omnes wrote: >>>>> >>>>> I would like to use RS485 with the BBB. >>>>> >>>>> root@beaglebone:~/test# uname -a >>>>> Linux beaglebone 4.1.15-ti-r40 #1 SMP PREEMPT Thu Jan 7 23:32:17 UTC >>>>> 2016 armv7l GNU/Linux >>>>> >>>>> I am using the kernel above. Its source code is at >>>>> >>>>> https://github.com/RobertCNelson/linux-stable-rcn-ee/tree/4.1.15-ti-rt-r40 >>>>> >>>>> ... however it does not include the changes in this patch: >>>>> >>>>> https://github.com/RobertCNelson/bb-kernel/blob/am33x-v3.8/patches/fixes/0007-omap-RS485-support-by-Michael-Musset.patch#L30 >>>>> >>>>> Which kernel should I use that includes the changes in the patch or >>>>> something similar? >>>>> >>>> -- >>>> 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 group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To view this discussion on the web visit >>>> <https://groups.google.com/d/msgid/beagleboard/50692f39-69e3-4454-b8ba-ec03e4d86101%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> https://groups.google.com/d/msgid/beagleboard/50692f39-69e3-4454-b8ba-ec03e4d86101%40googlegroups.com >>>> . >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>>> >>>> >>>> >>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon> >>>> Virus-free. >>>> www.avast.com >>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link> >>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to a topic in the >>>> Google Groups "BeagleBoard" group. >>>> To unsubscribe from this topic, visit >>>> https://groups.google.com/d/topic/beagleboard/nMtRpdWSJu0/unsubscribe. >>>> To unsubscribe from this group and all its topics, send an email to >>>> [email protected]. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/beagleboard/571E7751.2020206%40gmail.com >>>> <https://groups.google.com/d/msgid/beagleboard/571E7751.2020206%40gmail.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >> -- >> 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 group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/CAAPjYCaM58KxhqX_s1DwsdJ7z2tdemEoCVHjZj0D780CpxQTug%40mail.gmail.com >> <https://groups.google.com/d/msgid/beagleboard/CAAPjYCaM58KxhqX_s1DwsdJ7z2tdemEoCVHjZj0D780CpxQTug%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/nMtRpdWSJu0/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CALHSORrEpSMUET0monBs3YB-qonsfYPzCjQex%3DZdhZ-KMskn%2BA%40mail.gmail.com > <https://groups.google.com/d/msgid/beagleboard/CALHSORrEpSMUET0monBs3YB-qonsfYPzCjQex%3DZdhZ-KMskn%2BA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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