And I might add, that you should subscribe to the mailinglist, by sending an empty email to [email protected]
I had to moderate your email manually... If you're subscribed this happens automatically. Chris Holen Sie sich Outlook für Android<https://aka.ms/AAb9ysg> ________________________________ From: Łukasz Dywicki <[email protected]> Sent: Wednesday, November 17, 2021 1:40:33 PM To: [email protected] <[email protected]> Subject: Re: CANOpen_cant send data to vcan on linux(Ubuntu) Hey, There might be several reasons why you can't see anything on the interface. 1. Interface is down, make sure you perform both commands: sudo ip link add dev vcan1 type vcan sudo ip link set up vcan1 2. The candump command might not list "loopback" messages, I am not sure of that, but you need to verify its options. You can also use interface statistics to see if counters go up: ip -details -statistics link show vcan1 Let me know if any of above helps. The PDO address you use is valid and should trigger message on the bus. Best, Łukasz śr., 17 lis 2021 o 13:26 蒋怀川 <[email protected]> napisał(a): > > ====中文========================================================================== > > 你好，导师，我是一名java程序员，我在使用canopen当中遇到一些相关的疑问。如下面的截图所示，我向vcan发送数据，但是Vcan没有打印出任何提示信息。这种问题我需要如何处理，谢谢。 > > > > ====English======================================================================== > Hello, tutor, I'm a java developer,I have some questions about using > CANopen. As shown in the screenshot below, I sent data to Vcan, but Vcan > did not print any prompt information. How do I deal with this problem? > Thank you. > > > > ====code========================================================================== > <dependencies> > <!-- > https://mvnrepository.com/artifact/org.apache.plc4x/plc4j-driver-canopen > --> > <dependency> > <groupId>org.apache.plc4x</groupId> > <artifactId>plc4j-driver-canopen</artifactId> > <version>0.8.0</version> > </dependency> > </dependencies> > > =================================================================================== > package com; > > > import org.apache.plc4x.java.api.exceptions.PlcConnectionException; > import org.apache.plc4x.java.api.messages.PlcWriteRequest; > import org.apache.plc4x.java.api.messages.PlcWriteResponse; > import org.apache.plc4x.java.canopen.CANOpenPlcDriver; > import org.apache.plc4x.java.spi.connection.DefaultNettyPlcConnection; > > > import java.util.concurrent.CompletableFuture; > import java.util.concurrent.ExecutionException; > > > public class CANOpenVcanDemo { > public static void main(String[] args) > throws PlcConnectionException, ExecutionException, > InterruptedException { > String canInterface = "vcan1"; > String connectionString = > String.format("canopen:socketcan://%s?nodeId=11", > canInterface); > DefaultNettyPlcConnection plcConnection = > (DefaultNettyPlcConnection) new > CANOpenPlcDriver().getConnection(connectionString); > plcConnection.connect(); > if (plcConnection.isConnected()){ > System.out.println("Connected"); > }else { > System.out.println("not Connected"); > return; > } > if (plcConnection.getMetadata().canWrite()) { > PlcWriteRequest.Builder builder = > plcConnection.writeRequestBuilder(); > //String address = "SDO:11:0x1600/0x01:INTEGER64"; > String address = "RECEIVE_PDO_1:11:INTEGER64"; > //CANOpenDataType > builder.addItem("rpdo_0x200", address,123); > PlcWriteRequest plcWriteRequest = builder.build(); > CompletableFuture<PlcWriteResponse> completableFuture = > (CompletableFuture<PlcWriteResponse>) > plcWriteRequest.execute(); > System.out.println("===========>flag"); > PlcWriteResponse plcWriteResponse = completableFuture.get(); > > System.out.println(plcWriteResponse.getResponseCode("rpdo_0x200")); > } > } > } > > > > > > > >
