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FPGA Hacking
===================
- HDL template
- pointers to toolchain setup and FPGA learning resources
- kernel and userland details
- performance and "numbers" table
- expansion header pinouts
GPBB FPGA Communications Quickstart
-------------------------------------
Run these commands from a Novena with the GPBB attached::
sudo apt-get install i2c-tools libi2c-dev
cd # sic.
git clone https://github.com/bunnie/novena-gpbb-example
cd novena-gpbb-example
make -j4
sudo ./configure.sh novena_fpga.bit
sudo ./novena-gpbb -v
Simple test --- toggle four on-board LEDs, connected to I/O port B, pins 0--3::
sudo ./novena-gpbb -oeb 1 # set port B to drive
for BIT in 0 1 2 3; do
sudo ./novena-gpbb -p_set b $BIT # Set pin
sleep 1
done
sudo ./novena-gpbb -p b 00 # Write 0x00, i.e. reset all pins
sudo ./novena-gpbb -oeb 0 # return port B to tristate mode
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