08-28-2019, 12:53 PM
Hello,
I currently have two Lindenis V5 boards and I want to understand the boot process a little bit more.
From Allwinner documentation, I understand that there’s so called FEL pin which either boots motherboard normally (depending on BOOTSEL flags) or enters UPGRADE mode (USB or UART).
So can you please help me with the following questions:
I currently have two Lindenis V5 boards and I want to understand the boot process a little bit more.
From Allwinner documentation, I understand that there’s so called FEL pin which either boots motherboard normally (depending on BOOTSEL flags) or enters UPGRADE mode (USB or UART).
So can you please help me with the following questions:
- Where this FEL pin is located? I can’t find it in schematics.
- How to enter UART upgrade process instead of USB? I want to try it out.