查看“EMB-3581-COM”的源代码

====COM1:====

:COM1是一分二的COM，是CPU直接引出，分别对应设备：/dev/ttyS4、/dev/ttyS7

[[文件:EMB-3581-COM.jpg|450px|缩略图|EMB-3581-COM]]

===== COM1 引脚定义 =====
:{| class="wikitable"
|-
! 信号名称 !! Pin# !! Pin# !! 信号名称 
|-
| NC  || 1 || 2 || COM7_RX
|-
| COM4_RX || 3 || 4 || COM7_TX
|-
| COM4_TX || 5 || 6 || NC
|-
| NC  || 7 || 8 || NC
|-
| GND || 9 || 10 || GND
|}

----

====JCOM（1-4）:====
: JCOM（1-4）是一分四COM，分别对应/dev/ttyVIZ0~3
:其中1COM/2COM 支持 RS232/RS485 两种传输模式
:(J1、J2)跳线控制1COM 的 232/485切换
:(J3、J4)跳线控制2COM 的 232/485切换

===== JCOM（1-4）引脚定义 =====
:{| class="wikitable"
|-
! 信号名称 !! Pin# !! Pin# !! 信号名称 
|-
| JCOM1_D-（485 B） || 1 || 2 || NC
|-
| JCOM1_RX（485 A）|| 3 || 4 || JCOM1_RTS
|-
| JCOM1_TX|| 5 || 6 || JCOM1_CTS
|-
| NC || 7 || 8 || NC
|-
| GND || 9 || 10 || GND
|-
| JCOM2_D- （485 B）|| 11 || 12 || NC
|-
| JCOM2_RX （485 A）|| 13 || 14 || JCOM2_RTS
|-
| JCOM2_TX || 15 || 16 || JCOM2_CTS
|-
| NC || 17 || 18 || NC
|-
| GND || 19 || 20 || GND
|-
| NC || 21 || 22 || NC
|-
| JCOM3_RX || 23 || 24 || JCOM3_RTS
|-
| JCOM3_TX || 25 || 26 || JCOM3_CTS
|-
| NC || 27 || 28 || NC
|-
| GND || 29 || 30 || GND
|-
| NC || 31 || 32 || NC
|-
| JCOM4_RX || 33 || 34 || JCOM4_RTS
|-
| JCOM4_TX || 35 || 36 || JCOM4_CTS
|-
| NC || 37 || 38 || NC
|-
| GND || 39 || 40 || GND
|}



====== JCOM（1-4） 1COM 跳线232/485设置 ======
::'''J1、J2:'''
:{| class="wikitable"
|-
|colspan=2|JCOM（1-4） 1COM AS RS232 PORT ||colspan=2|COM2 1COM AS RS485 PORT
|-
| J1 || 1-2 || J1 ||3-4,5-6
|-
|  J2 || 1-3,2-4 ||J2 ||3-5,4-6 
|}

====== JCOM（1-4） 2COM 跳线232/485设置 ======

::'''J3、J4:'''
:{| class="wikitable"
|-
|colspan=2|JCOM（1-4） 2COM AS RS232 PORT ||colspan=2|COM2 2COM AS RS485 PORT
|-
| J3 || 1-2 || J1 ||3-4,5-6
|-
|  J4 || 1-3,2-4 ||J2 ||3-5,4-6 
|}