RSB-3730 UART（RS-232/RS-485） - Revision history

Xingxing.li at 08:13, 10 November 2023

2023-11-10T08:13:42Z

Xingxing.li at 07:15, 10 November 2023

2023-11-10T07:15:49Z

Xingxing.li at 07:14, 10 November 2023

2023-11-10T07:14:01Z

Xingxing.li at 07:04, 10 November 2023

2023-11-10T07:04:02Z

Xingxing.li: Created page with " === '''How to Config RS232 or RS485 Mode''' === {| border="1" cellpadding="1" cellspacing="1" style="width: 500px;" |- | '''COM Name''' | '''Device Node''' | '''Remark''' |-..."

2023-11-10T06:52:39Z

Created page with " === '''How to Config RS232 or RS485 Mode''' === {| border="1" cellpadding="1" cellspacing="1" style="width: 500px;" |- | '''COM Name''' | '''Device Node''' | '''Remark''' |-..."

New page

=== '''How to Config RS232 or RS485 Mode''' ===

{| border="1" cellpadding="1" cellspacing="1" style="width: 500px;"
|-
| '''COM Name'''
| '''Device Node'''
| '''Remark'''
|-
| UIO2 com1
| /dev/ttymxc0
| support RS232
|-
| COM1/DEBUG2
| /dev/ttymxc1
| Debug Port
|-
| COM
| /dev/ttymxc2
| support RS232/RS485
|-
| UIO2 com4
| /dev/ttymxc3
| support RS232
|}

Enter U-boot interrupt mode  Connect device to debug port, and open debug console.<br/> Press "ctrl + c" key before power up the device, until get the following information on debug console:
<pre>Hit any key to stop autoboot: 0
=> <INTERRUPT>
=></pre>

Then you can input the following cammand to config UART mode.

'''RS485 Mode：'''
<pre>=> setenv uart_mode 2:1
=> saveenv
=> reset</pre>

RS232 Mode：
<pre>=> setenv uart_mode 2:0
=> saveenv
=> reset</pre>

Note：The default value is RS232.

The above command "setenv uart_mode 2:1", 2:1 means to set ttymxc2 to RS485 standard mode, and 2:0 means to set ttymxc2 to RS232 mode.<br/> The following RS232 testing method is shared by "/dev/ttymxc0, /dev/ttymxc2, /dev/ ttymxc3",and only needs to be replaced Uart Name.

'''RS232- Loopback Test'''
<pre># stty -F /dev/ttymxc0 -echo -onlcr 115200
# cat /dev/ttymxc0 &
# echo "Serial Port Test" > /dev/ttymxc0</pre>

[[File:RSB-3730 RS232 loopback Test.png]]

 

@@ Line 1: / Line 1: @@
 === '''How to Config RS232 or RS485 Mode''' ===
@@ Line 64: / Line 68: @@
 Receive “test” on PC terminal.
-[[File:RSB-3730 RS485 for Adam-4520I.png|1100x500px]]
+[[File:RSB-3730 RS485 for Adam-4520I.png|1100x500px|RSB-3730 RS485 for Adam-4520I.png]]

← Older revision		Revision as of 07:15, 10 November 2023
Line 62:		Line 62:
	# echo test > /dev/ttymxc2</pre>		# echo test > /dev/ttymxc2</pre>

−	[[File:RSB-3730 RS485 for Adam-4520I.png]]	+	Receive “test” on PC terminal.
		+
		+	[[File:RSB-3730 RS485 for Adam-4520I.png\|1100x500px]]

@@ Line 51: / Line 51: @@
 # echo "Serial Port Test" > /dev/ttymxc0</pre>
-[[File:RSB-3730 RS232 loopback .png]]
+[[File:RSB-3730 RS232 loopback .png|RTENOTITLE]]
 '''RS-485 Test'''
-&nbsp;
+Test RS-485 with Adam-4520I. Connect Adam-4520I to PC with DB9 cable.Connect&nbsp;Adam-4520I to COMX DB9.