• Thax @fanoush, I have tried
    'BTN1' : { 'pin' : 'D9' }

    and built along with 'make clean' always, but nothing changed, it stucked on LED1 (red led).
    I also tried the minimal board file(without BTN1) as you mentioned before to delete the cmd as follow:

    #'default_console' : "EV_SERIAL1",
    # 'default_console_tx' : "D25",
    #'default_console_rx' : "D26",
    # 'default_console_baudrate' : "9600",
     'bootloader' : 0,

    But stucked on LED1 (red led) too except the green and blue led


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