without tfcard, use usb cable download:
[ LED TYPEC ] VBUS
[ ] VSYS
[ ] GND
[ ] 3V3_EN
[ ] 3V3_OUT---4.7k resistor----\
[ ] NOP |
[ MILKV DUO ] NOP |
[ ] VBUS_DET-------------------/
connect usb cable to computer, then run command:
makeuart0 baudrate 115200
mit