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