Wiren Board 4: Модуль расширения RS-232/en: различия между версиями
(Новая страница: «In the <pre> /boot/uEnv.txt </pre> file you need to replace the line») |
(Новая страница: «The port is available in the system as») |
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| (не показаны 4 промежуточные версии этого же участника) | |||
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</pre> | </pre> | ||
with | |||
<pre> | <pre> | ||
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</pre> | </pre> | ||
and '''reboot controller''' by command | |||
<pre> | <pre> | ||
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See [[Просмотр файлов контроллера с компьютера/en| 1]] and [[SSH/en ]]. | |||
== | == Operation == | ||
The port is available in the system as | |||
<pre> | <pre> | ||
/dev/ttyNSC1 | /dev/ttyNSC1 | ||
</pre> | </pre> | ||
Текущая версия на 20:43, 19 июля 2019
Pinout
The RS-232 signals are output to the terminals of the O1-O3 extension module.
Pinout:
- O1 - GND
- O2 - TX
- O3 - RX
Multiplexing
The RS-232 module is multiplexed with an uninsulated RS-485 port. Their simultaneous operation is not allowed
Configuration
To work with RS-232, the Wiren Board kernel must be configured in a specific way.
In the
/boot/uEnv.txt
file
you need to replace the line
fdt_file=/boot/dtbs/imx23-wirenboard41.dtb
with
fdt_file=/boot/dtbs/imx23-wirenboard41-rs232.dtb
and reboot controller by command
reboot
Operation
The port is available in the system as
/dev/ttyNSC1