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Pico Max in USB Host mode
Posted: 2024-09-02 23:23
by Tomate
Hi, just to confirm.
- Power is supplied by the VBUS and GND pins (5V)
- In this mode, the SocToolKit via USB is not allowed, I suppose it should be done via serial port
Thanks in advance
Re: Pico Max in USB Host mode
Posted: 2024-09-03 1:17
by Crocodile
Hello
1. There is a Schottky diode between VBUS (USB-C 5V power supply) and VSYS (system 5V power supply). VBUS can supply power to VSYS, but VSYS cannot supply power to VBUS.
2. Before the kernel loading stage, the USB is always in peripheral mode, and flashing is also done before the kernel loading stage, so it is still possible to use USB for image flashing. Although using UART for flashing is feasible, it is time-consuming during downloading due to the maximum baud rate being only 1500000.
Re: Pico Max in USB Host mode
Posted: 2024-09-03 15:28
by Tomate
Crocodile wrote: ↑2024-09-03 1:17
2. Before the kernel loading stage, the USB is always in peripheral mode, and flashing is also done before the kernel loading stage, so it is still possible to use USB for image flashing. Although using UART for flashing is feasible, it is time-consuming during downloading due to the maximum baud rate being only 1500000.
Very good data, Thanks !