Booting BearlyML With External SPI Flash

Connect SPI to FE310.

We need to use J-Link to communicate with the board/chip. So run JLink.exe

J-Link Commands

Here and here are some references. Can also type ? in terminal to see list of command.

To connect device

connect FE310

List Regs

Regs
RReg pc

Examine memory content

Mem32 0x20000000, 2

Erase Flash

Erase 0x20000000, 0x20001000

Load file to Flash

LoadFile C:\Users\TK\Desktop\HAL\firmware\build\firmware.bin, 0x20000000

Common commands as GDB

Halt
Go
Reset
Step

SPI Wiring

Sparkfun FE310 Board Connection

Arty 35T Board Connection

Note: the #RESET pin need to be tied to HIGH.