B4J Question JSerial Open multiple COM Ports

Erel

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• May 16, 2017

• #2

You need to use multiple jSerial objects and AsyncStreams. The best way to implement it is with a class. This will allow you to create multiple instances of the class, each with a different port.

 

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Yado

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• May 16, 2017

• #3

Thanks , i'll try !

 

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Yado

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• May 19, 2017

• #4

OK , i've make the class ,and all works when i need to get the streams , since it come from any opened COM ,
but when i send data works only the last opened COM , any idea why ?

Thanks

 

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Erel

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• May 21, 2017

• #5

Hard to say. Can you upload the project (File - export as zip)?

 

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Yado

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• May 22, 2017

• #6

Ah found that if i make a Class for every Com that i open , it's works nice.
Probably i dont understant something on what a class works.

I call a class : example my class is named jcom , i call it and pass the parameters like :

Dim cser As jcom

cser.Initialize("event1")
cser.opencom("COM1",2400,7,2,2,"astream1") ' open com1'

and i call again for com2

cser.Initialize("event1")
cser.opencom("COM2",2400,7,2,2,"astream1")

is this the correct way ?

 

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DonManfred

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• May 22, 2017

• #7

Yado said:

is this the correct way ?

Click to expand...

Sounds like no.
If you want o have different connections then you need to have different Objects.

B4X:

Dim cser1 As jcom
cser1.Initialize("event1")
cser1.opencom("COM1",2400,7,2,2,"astream1") ' open com1'

B4X:

Dim cser2 As jcom
cser2.Initialize("event2")
cser2.opencom("COM2",2400,7,2,2,"astream2") ' open com2'

You now have two opened conenctions. cser1 and cser2

 

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Yado

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• May 22, 2017

• #8

Thanks , it works !

 

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