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Function

      Use the Baud rate 38400 to open up and listen to the Pscam card2 with the previous cards interaction not closed. And return searching result

     Parameter

ParaName

Type

Description

null

 

 

 

 

 

 

     Return value

     

Return value

Description

int

card type, if card is not found, 0 will be returned, if error, -1 will be returned