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Re: PCAN-LIN Installation
Posted: Thu 7. Dec 2017, 10:29
by M.Maidhof
Hi,
please see protocol definition pdf page 110:
0x0A Slave not responding
0x08 Invalid frame checksum received
bit 6 of byte 3 will be set, that is why you will see 0x4A and 0x48
don´t care for errors on a wakeup signal, it is just there to wakeup other nodes, and you will get no responds.
BTW: please send a 3D subscriber as wakeup, instead of a 3D publisher with data.
regards
Michael
Re: PCAN-LIN Installation
Posted: Thu 7. Dec 2017, 11:05
by Oprogramer
Hello,
thank you for your helo.
To send a 3D subscriber as wakeup, i first change the mode of the PCAN-LIN to Master, then change the Set Slave Mask status of the ID 3D to subscriber and then send the message, with default values, with the write command.
Is that correct or how can i send a subscriber message?
Best regards
Re: PCAN-LIN Installation
Posted: Thu 7. Dec 2017, 12:29
by M.Maidhof
yes, correct. You must "OR" the LIN ID with 0x80 in your serial command to send a subscriber message.
regards
Michael
Re: PCAN-LIN Installation
Posted: Thu 7. Dec 2017, 13:56
by Oprogramer
Hi,
Thank you for the information.
I now send a 3D subscriber as wakeup. The command i use is: 0x02(stx) 0x01(sc) 0x81(cc) 0xBD (3D OR 0x80,ID) 0x3D(chk).
And i get a slave not responding error but after reseting the module to Slave i get messages again.
Do i need everytime a reseting of the module to load the changes and when i OR the LIN ID with 0x80 then i do not need to execute the set Slave Mask status to subscriber?
Best regards
Re: PCAN-LIN Installation
Posted: Thu 7. Dec 2017, 14:25
by M.Maidhof
you only need a master termination to send out a subscriber frame. But as long as 3D is set to publisher, it will be triggered by your subscriber.
regards
Michael
Re: PCAN-LIN Installation
Posted: Fri 8. Dec 2017, 14:42
by Oprogramer
Hello,
Thank you for your help
!
Best regards
Re: PCAN-LIN Installation
Posted: Wed 13. Dec 2017, 21:03
by Oprogramer
Hello,
i have a problem to set the Slave Mask status to subscriber. When i change the slave mask status to publisher, that works. But when i change it again to subscriber, it dosent work.
My programflow is : i first set the checksum type, then change the Frame length and then set the slave mask status to subscriber. I get no errors and the checksum type and frame length is changing but not the slave mask status from publisher to subscriber.
Do i must do some steps before or after changing the slave mask status to subscriber?
Best regards
Re: PCAN-LIN Installation
Posted: Thu 14. Dec 2017, 12:09
by M.Maidhof
Hi,
please post the serial commands you are using, please post full details inclusive checksum.
regards
Michael
Re: PCAN-LIN Installation
Posted: Thu 14. Dec 2017, 23:22
by Oprogramer
Hello,
below is the program flow of my application as i described in my previous post. All commands are working except the command to change the slave mask status to subscriber but i get the error ok code when calling this method
. Changing the slave mask status to publisher works.
The commands are usually in methods and i just call the methods in the order below. ID and status are parameters of the method.
I also call the flash current configuration and reset module after the commands are executed. They also work, i checked the error code.
The error code when changing to subscriber is also error ok but it doesent change to subscriber?
Code: Select all
' Function to calculate the checksum
Public Function calculateChecksum(ByVal barray() As Byte) As Byte
Dim result As Byte = barray(1)
For i = 2 To UBound(barray) - 1
result = result Xor barray(i)
Next
Return result
End Function
'[color=#FF0000]sets the slave mask status according to the parameters to subscriber or publisher for a given Id, parameters are slave status and id
Here just changing the status to publisher works, but when i change the status to subscriber it often doesent works.[/color]
[color=#FF0000]Dim ibuffer(6) As Byte
ibuffer(0) = &H2 'STX
ibuffer(1) = &H3 'SC
ibuffer(2) = &HAE 'CC
ibuffer(3) = &H1 'set mask for single id
ibuffer(4) = id 'ID to set the status!!!
ibuffer(5) = status 'status
ibuffer(6) = calculateChecksum(ibuffer) 'CHK
Try
mySerialPort.Write(ibuffer, 0, 7)
Catch ex As Exception
Console.WriteLine("Exception: " & ex.Message.ToString())
End Try[/color]
Re: PCAN-LIN Installation
Posted: Fri 15. Dec 2017, 09:50
by M.Maidhof
Hi,
I asked for the serial stream you sent to the PCAN-LIN, so please sent me the results of your code on the serial port. It is not my job to check your code for any error. This is not included in our free product support.
regards
Michael