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. For more options, visit https://groups.google.com/d/optout.
