FPGA

Board I'm working with - notes and links

Gowin RUNBER FPGA Development Board
RUNBER Development Board Hardware Instructions
Board is red with - mini eye board gw1n 1.2 marked on it
Where is the schematic for RUNBER FPGA Development Board Ver. 1.2?
FPGA Model - GW1N-UV4LQ144C6/I5
GW1N (Traditional FPGA)
GW1N series of FPGA Products - Package & Pinout User Guide
GW1N series of FPGA Products Data Sheet

board

Trouble shooting

We have version v1.2 in the lab and it seams like there may be some defects.

Issue for Gowin RUNBER FPGA Ver. 1.2
Cause and solution of Gowin RUNBER - this page is in Japanese
Gowin notes

Toolchain

Basic Flow Example

# 1. Synthesize Verilog to JSON netlist
yosys -p "read_verilog design.v; synth_gowin -json design.json"

# 2. Place and route the design
nextpnr-himbaechel --json design.json --write placed.json \
                   --device GW1NR-LV9QN88PC6/I5 \
                   --vopt cst=constraints.cst

# 3. Generate bitstream
gowin_pack -d GW1N-9C -o final.fs placed.json

# 4. Program the FPGA
openFPGALoader -b tangnano9k final.fs

I'm trying this loads to the board but and status light done lights up but nothing else works.

yosys -p "read_verilog blinky.v; synth_gowin -json blinky.json" && \                 
nextpnr-gowin --json blinky.json --write placed.json --device GW1N-UV4LQ144C6/I5 --cst runber.cst && \
gowin_pack -d GW1N-4 -o blinky.fs placed.json && \
sudo openFPGALoader --cable ft2232 --vid 0x0403 --pid 0x6010 blinky.fsi