[SAML22J16A] Boot loader function by USB CDC problem

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Hello all,

After i process contain boot loader into chip SAML22J16A. i understand first step that it follow Romless manual

( SAM-BA Monitor for ROMless Cortex M Devices - SAM-BA® Monitor for ROMless Cortex Devices Application Note ==> AN2565 ) 

 

for setting port in first step , i use  SAM-BA MONITOR ROMLESS v2.18  project for modify code to correct with SAML22J16A.

My code no have error and it can build success and debug.

But Port of SAML22J16A not show in Device management on PC. SO, i can't do next step ( Use SAM-BA v2.18 program to tranfer .hex into chip)

Please advice me about config usb port  of coding or it have some method for boot loader it wrong ?

 

My code after modify and 

 

 

In USB port of Schematic follow

PA25 USB D+ DP

PA24 USB D- DM

 

 

Picture exaple i want it