I believe it can be now since v3.19.x but we don't know the kernel version
he's using so all we can do is guess :(.
There's a recent thread here with some links with instructions on how to
set it up so perhaps the OP can give that a go :thumbup:.
On Sunday, May 17, 2015 at 8:35:45 AM UTC+1, Davide Picchi wrote:
>
> Are you sure, that you selected the right UART port???
>
> It should be
>>> /dev/ttyO0
>>>
>>> or
>>> /dev/ttyO1
>>>
>>> and so on...but not
>>> /dev/ttySx
>>>
>>>
>>>
> On Tuesday, April 28, 2015 at 9:19:31 PM UTC+2, Peter Hurley wrote:
>>
>> On 04/27/2015 06:41 AM, JAY KOTHARI wrote:
>> > Hi,
>> > I am unable to do simple uart communication in BBB. I have set
>> device tree
>> >
>> > uart2_pins: uart2_pins {
>> > pinctrl-single,pins = <
>> > 0x154 0x01
>> > 0x150 0x31
>> >>;
>> > };
>> >
>> > &uart2 {
>> > status = "okay";
>> > pinctrl-names = "default";
>> > pinctrl-0 = <&uart2_pins>;
>> > };
>> >
>> > then I configure the UART Port
>> >
>> > stty -F /dev/ttys0 cstopb -evenp ispeed 115200
>> ^^^^^^^^^
>> stty: /dev/ttys0: No such file or directory
>>
>> uart2 is not /dev/ttyS0.
>>
>> uart0 = /dev/ttyS0
>> uart1 = /dev/ttyS1
>> uart2 = /dev/ttyS2
>>
>> Regards,
>> Peter Hurley
>>
>>
>> > Then I made a user space application for reading and writing data to
>> > device file. I have attached the application program
>> >
>> > I connected Tx and Rx pin in same BBB.(Loop back mode)
>> >
>> > But I am not able to do simple UART communication in loop back
>> > mode. Do am I missing something? Please help me
>>
>>
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