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?
>
--
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