acassis commented on code in PR #17461:
URL: https://github.com/apache/nuttx/pull/17461#discussion_r2603574859
##########
Documentation/platforms/sim/sim/boards/sim/index.rst:
##########
@@ -1859,6 +1859,30 @@ This is a configuration with sim usbhost support.
Run sim usbhost with root mode, run sim usbdev or plug-in cdcacm usb device.
Then you can use ``/dev/ttyACM`` to transfer data.
+ Here we will demonstrate an example of interaction between sim usbhost and
+ sim usbdev. Build two executable files using the configurations
``sim:usbdev``
+ and ``sim:usbhost`` respectively.
+
+ Run two executable files with root mode. Then, run CDCACM in usbdev.
+
+ .. code:: console
+
+ $ conn 1
+
+ Enter commands to read CDCACM on the usbhost:
+
+ .. code:: console
+
+ $ cat /dev/ttyACM0 &
+
+ Enter commands to write CDCACM on the usbdev:
+
+ .. code:: console
+
+ $ echo hello > /dev/ttyACM0
Review Comment:
```suggestion
nsh> echo hello > /dev/ttyACM0
##########
Documentation/platforms/sim/sim/boards/sim/index.rst:
##########
@@ -1859,6 +1859,30 @@ This is a configuration with sim usbhost support.
Run sim usbhost with root mode, run sim usbdev or plug-in cdcacm usb device.
Then you can use ``/dev/ttyACM`` to transfer data.
+ Here we will demonstrate an example of interaction between sim usbhost and
+ sim usbdev. Build two executable files using the configurations
``sim:usbdev``
+ and ``sim:usbhost`` respectively.
+
+ Run two executable files with root mode. Then, run CDCACM in usbdev.
+
+ .. code:: console
+
+ $ conn 1
+
+ Enter commands to read CDCACM on the usbhost:
+
+ .. code:: console
+
+ $ cat /dev/ttyACM0 &
Review Comment:
```suggestion
nsh> cat /dev/ttyACM0 &
##########
Documentation/platforms/sim/sim/boards/sim/index.rst:
##########
@@ -1859,6 +1859,30 @@ This is a configuration with sim usbhost support.
Run sim usbhost with root mode, run sim usbdev or plug-in cdcacm usb device.
Then you can use ``/dev/ttyACM`` to transfer data.
+ Here we will demonstrate an example of interaction between sim usbhost and
+ sim usbdev. Build two executable files using the configurations
``sim:usbdev``
+ and ``sim:usbhost`` respectively.
+
+ Run two executable files with root mode. Then, run CDCACM in usbdev.
Review Comment:
```suggestion
Run each executable files as root in different terminals.
Terminal 1 (run nuttx binary from sim:usbhost) :
.. code:: console
$ sudo ./nuttx
Terminal 2 (run nuttx binary from sim:usbdev) :
.. code:: console
$ sudo ./nuttx
Then, run CDCACM in usbdev.
##########
Documentation/platforms/sim/sim/boards/sim/index.rst:
##########
@@ -1859,6 +1859,30 @@ This is a configuration with sim usbhost support.
Run sim usbhost with root mode, run sim usbdev or plug-in cdcacm usb device.
Then you can use ``/dev/ttyACM`` to transfer data.
+ Here we will demonstrate an example of interaction between sim usbhost and
+ sim usbdev. Build two executable files using the configurations
``sim:usbdev``
+ and ``sim:usbhost`` respectively.
+
+ Run two executable files with root mode. Then, run CDCACM in usbdev.
+
+ .. code:: console
+
+ $ conn 1
Review Comment:
```suggestion
nsh> conn 1
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