我想使用 AM335x ICE EVM Rev2.1 版的485口进行串口通信,跳线该怎样连接?
yongqing wang:
这里有它的原理图,自行对比一下:www.ti.com/…/TMDSICE3359
Nancy Wang:
查看了一下原理图,这个接口是CAN接口。
user6151368:
回复 yongqing wang:
看不懂
xyz549040622:
回复 Nancy Wang:
这个板子没有485口吧,这个应该是PROFIBUS interface口。至于怎么切换到PROFIBUS interface口,手册讲的很清楚。
The Jumpers J4,J5,J6 and J7 are used to select between the CAN / PROFI bus. Description of the selection is provided below.
Jumper Selection
J4 Pins 1 & 2 Short for CAN bus Voltage select
J5 Pins 1 & 2 Short for PROFIBUS Voltage select
J6 Pins 1 & 2 Short for PROFIBUSA select,Pins 2 & 3 Short for CAN Ground select
J7 Pins 1 & 2 Short for PROFIBUS Ground selectJ5和J7短接,J6的PIN1和PIN2短接即可。
yongqing wang:
回复 user6151368:
在原理图找到对应的跳线帽,及旁边的有其丝印
另外这个板子也没说有485吧