The is the variant of the MiSTeryNano FPGA companion firmware for the BL616 MCU.
The instructions in the MiSTerNano repositories mostly apply to this version as well.
additional instructions
Install Git for Windows
Install cmake for Windows
Install Bouffalo RISC-V MCU toolchain
Open Start Search, type “cmd” or Win + R and type “cmd”
cd %HOMEPATH%
git clone https://github.com/bouffalolab/toolchain_gcc_t-head_windows.git
Install modified Bouffalo SDK:
cd %HOMEPATH%
git clone --recurse-submodules https://github.com/harbaum/bouffalo_sdk.git
This is a fork of the original Bouffalo SDK with the CherryUSB stack updated to a more recent version
Set Windows SDK Environment Variable:
Open Start Search, type “env”, and select “Edit the system environment variables”.
BL_SDK_BASE=C:\Users\xyzuser\bouffalo_sdk
Set Windows search PATH for Toolchain:
C:\Users\xyzuser\toolchain_gcc_t-head_windows\bin
C:\Users\xyzuser\bouffalo_sdk\tools\make
C:\Users\xyzuser\bouffalo_sdk\tools\ninja
(Optional) Set Windows search PATH for Gowin FPGA Tools:
C:\Gowin\Gowin_V1.9.10_x64\IDE\bin
C:\Gowin\Gowin_V1.9.10_x64\Programmer\bin
Close shell
exit
Open Start Search, type “cmd” or Win + R and type “cmd”
check individually proper start of each single tool
make -v
cmake -version
ninja --help
riscv64-unknown-elf-gcc -v
Download FPGA companion repository
cd %HOMEPATH%/Documents
If you plan to enhance the fw create a fork and clone from there.
mkdir fork
cd fork
git clone https://github.com/xyzuser/FPGA-Companion.git
git clone https://github.com/harbaum/FPGA-Companion.git
cd FPGA-Companion
git submodule init
git submodule update
Compile the firmware:
cd %HOMEPATH%/Documents\fork\FPGA-Companion\src\bl616
make clean
make
program the firmware by using instructions
figure out µC bootloader COM port and use shell command:
Press Windows + R keyboard shortcut to launch the Windows Run box, type “devmgmt. msc” , and click the OK button
make CHIP=bl616 COMX=COMabc flash