RSB-4680 How to use UART. - Revision history

Xingxing.li at 02:27, 16 January 2024

2024-01-16T02:27:26Z

Xingxing.li at 02:26, 16 January 2024

2024-01-16T02:26:40Z

Xingxing.li: Created page with " = '''Overview''' = The Android/Linux UART/serial port access from user is through the tty-devices. The tty-devices have different names depending on UA..."

2024-01-16T02:25:05Z

Created page with " = '''Overview''' = The Android/Linux UART/serial port access from user is through the tty-devices. The tty-devices have different names depending on UA..."

New page

= '''Overview''' =

The Android/Linux UART/serial port access from user is through the tty-devices. The tty-devices have different names depending on UART driver on different board.

== RS-485 ==

RS-485 uses half-duplex communication, which means that one medium is shared for transmitting and receiving data. Therefore the system needs to control the RS-485 transceiver's transmit mode. Usually the UART RTS signal is used to switch the transmitter on and off.

= '''Boards''' =

== RSB4680 Borad ==

{| style="width:500px; border:undefined"
|-
| style="width:119px" | '''COM Name'''
| style="width:123px" | '''Device Node'''
| style="width:240px" | '''Remark'''
|-
| style="width:119px" | COM0
| style="width:123px" | /dev/ttyS0
| style="width:240px" | for BT Data
|-
| style="width:119px" | COM1
| style="width:123px" | /dev/ttyS1
| style="width:240px" |  
|-
| style="width:119px" | COM2
| style="width:123px" | /dev/ttyS2
| style="width:240px" | Debug Port
|-
| style="width:119px" | COM3
| style="width:123px" | /dev/ttyS3
| style="width:240px" |  
|-
| style="width:119px" | COM4
| style="width:123px" | /dev/ttyS4
| style="width:240px" | Supprot RSB485
|-
| style="width:119px" | COM5
| style="width:123px" | /dev/ttyUSB0
| style="width:240px" | Usb to Uart
|-
| style="width:119px" | COM6
| style="width:123px" | /dev/ttyUSB1
| style="width:240px" | Usb to Uart
|}

'''Note :'''

1. Only COM1、COM2、COM3、COM4、COM5 and COM6 are designed for custom using.

2. Only COM4 support RSB485.

3. COM2 is designed as debug port default.

@@ Line 12: / Line 12: @@
 == RSB4680 Borad ==
-{| style="width:500px; border:undefined"
+{| border="1" cellpadding="1" cellspacing="1" style="width: 511px;"
 |-
-| style="width:119px" | <span style="color:#ff0000">'''COM Name'''</span>
+| style="width: 108px;" | '''COM Name'''
-| style="width:123px" | <span style="color:#ff0000">'''Device Node'''</span>
+| style="width: 159px;" | '''Device Node'''
-| style="width:240px" | <span style="color:#ff0000">'''Remark'''</span>
+| style="width: 228px;" | '''Remark'''
 |-
-| style="width:119px" | COM0
+| style="width: 108px;" | COM0
-| style="width:123px" | /dev/ttyS0
+| style="width: 159px;" | /dev/ttyS0
-| style="width:240px" | for BT Data
+| style="width: 228px;" | for BT Data
 |-
-| style="width:119px" | COM1
+| style="width: 108px;" | COM1
-| style="width:123px" | /dev/ttyS1
+| style="width: 159px;" | /dev/ttyS1
-| style="width:240px" | &nbsp;
+| style="width: 228px;" | &nbsp;
 |-
-| style="width:119px" | COM2
+| style="width: 108px;" | COM2
-| style="width:123px" | /dev/ttyS2
+| style="width: 159px;" | /dev/ttyS2
-| style="width:240px" | Debug Port
+| style="width: 228px;" | Debug Port
 |-
-| style="width:119px" | COM3
+| style="width: 108px;" | COM3
-| style="width:123px" | /dev/ttyS3
+| style="width: 159px;" | /dev/ttyS3
-| style="width:240px" | &nbsp;
+| style="width: 228px;" | &nbsp;
 |-
-| style="width:119px" | COM4
+| style="width: 108px;" | COM4
-| style="width:123px" | /dev/ttyS4
+| style="width: 159px;" | /dev/ttyS4
-| style="width:240px" | Supprot RSB485
+| style="width: 228px;" | Supprot RSB485
 |-
-| style="width:119px" | COM5
+| style="width: 108px;" | COM5
-| style="width:123px" | /dev/ttyUSB0
+| style="width: 159px;" | /dev/ttyUSB0
-| style="width:240px" | Usb to Uart
+| style="width: 228px;" | Usb to Uart
 |-
-| style="width:119px" | COM6
+| style="width: 108px;" | COM6
-| style="width:123px" | /dev/ttyUSB1
+| style="width: 159px;" | /dev/ttyUSB1
-| style="width:240px" | Usb to Uart
+| style="width: 228px;" | Usb to Uart
 |}

@@ Line 47: / Line 47: @@
 |}
-<span style="color:#ff0000">'''Note :'''</span>
+<span style="color:#ff0000">'''Note&nbsp;:'''</span>
 . Only COM1、COM2、COM3、COM4、COM5 and COM6 are designed for custom using.