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# Sphinx build info version 1 | ||
# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done. | ||
config: 5ee66292091ff32fcf1050388dd8a28f | ||
tags: 645f666f9bcd5a90fca523b33c5a78b7 |
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.. _compatibility:boards: | ||
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Boards | ||
###### | ||
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.. NOTE:: | ||
`arty` can be any of the board names from the first column. | ||
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.. code-block:: bash | ||
openFPGALoader -b arty bitstream.bit # Loading in SRAM (volatile) | ||
openFPGALoader -b arty -f bitstream.bit # Writing in flash (non-volatile) | ||
.. include:: boards.inc | ||
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* IF: Internal Flash | ||
* EF: External Flash | ||
* AS: Active Serial flash mode | ||
* NA: Not Available | ||
* NT: Not Tested |
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.. _compatibility:cables: | ||
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Cables | ||
###### | ||
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.. include:: cable.inc |
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.. _compatibility:fpgas: | ||
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FPGAs | ||
##### | ||
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.. include:: fpga.inc | ||
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* IF: Internal Flash | ||
* AS: Active Serial flash mode | ||
* NA: Not Available | ||
* NT: Not Tested |
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.. _advanced-usage: | ||
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Advanced usage of openFPGALoader | ||
################################ | ||
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Resetting an FPGA | ||
================= | ||
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.. code-block:: bash | ||
openFPGALoader [options] -r | ||
Using negative edge for TDO's sampling | ||
====================================== | ||
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If transaction are unstable you can try to change read edge by using | ||
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.. code-block:: bash | ||
openFPGALoader [options] --invert-read-edge | ||
Reading the bitstream from STDIN | ||
================================ | ||
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.. code-block:: bash | ||
cat /path/to/bitstream.ext | openFPGALoader --file-type ext [options] | ||
``--file-type`` is required to detect file type. | ||
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.. NOTE:: | ||
It's possible to load a bitstream through network: | ||
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.. code-block:: bash | ||
# FPGA side | ||
nc -lp port | openFPGALoader --file-type xxx [option | ||
# Bitstream side | ||
nc -q 0 host port < /path/to/bitstream.ext | ||
Automatic file type detection bypass | ||
==================================== | ||
Default behavior is to use file extension to determine file parser. | ||
To avoid this mechanism ``--file-type type`` must be used. | ||
FT231/FT232 bitbang mode and pins configuration | ||
=============================================== | ||
FT232R and ft231X may be used as JTAG programmer. | ||
JTAG communications are emulated in bitbang mode. | ||
To use these devices user needs to provides both the cable and the pin mapping: | ||
.. code-block:: bash | ||
openFPGALoader [options] -cft23XXX --pins=TDI:TDO:TCK:TMS /path/to/bitstream.ext | ||
where: | ||
* ft23XXX may be ``ft232RL`` or ``ft231X``. | ||
* TDI:TDO:TCK:TMS may be the pin ID (0 <= id <= 7) or string value. | ||
allowed values are: | ||
===== == | ||
value ID | ||
===== == | ||
TXD 0 | ||
RXD 1 | ||
RTS 2 | ||
CTS 3 | ||
DTR 4 | ||
DSR 5 | ||
DCD 6 | ||
RI 7 | ||
===== == | ||
Writing to an arbitrary address in flash memory | ||
=============================================== | ||
With FPGA using an external SPI flash (*xilinx*, *lattice ECP5/nexus/ice40*, *anlogic*, *efinix*) option ``-o`` allows | ||
one to write raw binary file to an arbitrary adress in FLASH. | ||
Using an alternative directory for *spiOverJtag* | ||
================================================ | ||
By setting ``OPENFPGALOADER_SOJ_DIR`` it's possible to override default | ||
*spiOverJtag* bitstreams directory: | ||
.. code-block:: bash | ||
export OPENFPGALOADER_SOJ_DIR=/somewhere | ||
openFPGALoader xxxx | ||
or | ||
.. code-block:: bash | ||
OPENFPGALOADER_SOJ_DIR=/somewhere openFPGALoader xxxx |
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.. _first-steps: | ||
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First steps with openFPGALoader | ||
############################### | ||
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Install | ||
======= | ||
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Packages are available for Linux distributions, Windows (MSYS2) and macOS: | ||
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* *Arch Linux*: ``sudo pacman -S openfpgaloader`` | ||
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* *Fedora*: ``sudo dnf copr enable mobicarte/openFPGALoader; sudo dnf install openFPGALoader`` | ||
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* *MSYS2*: ``pacman -S mingw-w64-ucrt-x86_64-openFPGALoader`` | ||
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* *macOS*: ``brew install openfpgaloader`` | ||
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More instructions for other installation scenarios are available in :ref:`install`. | ||
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Programming a development board | ||
=============================== | ||
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Just simply replace ``my_fpga_board`` with any FPGA board from :ref:`compatibility:boards` | ||
(or ``openFPGALoader --list-boards``) in any of the two commands below, depending on if you want to program the volatile | ||
part of your FPGA (faster but not persistent) or the flash part of your FPGA (slower but persistent): | ||
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.. code-block:: bash | ||
openFPGALoader -b my_fpga_board my_bitstream.bit # Program to SRAM | ||
openFPGALoader -b my_fpga_board -f my_bitstream.bit # Program to flash | ||
.. NOTE:: | ||
When a bitstream file is compatible with both memory load and FLASH write, the default behavior is to load bitstream | ||
in memory. | ||
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Programming an "standalone" FPGA | ||
================================ | ||
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If your FPGA doesn't come with a built-in programmer or if you prefer to use an external cable, you can specify a cable | ||
to use from :ref:`compatibility:cables` (or ``openFPGALoader --list-cables``): | ||
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.. code-block:: bash | ||
openFPGALoader -c my_cable my_bitstream.bit # Program to SRAM | ||
openFPGALoader -c my_cable -f my_bitstream.bit # Program to flash | ||
.. NOTE:: | ||
For some cable (like digilent adapters) signals from the converter are not just directly to the FPGA. | ||
For this case, the ``-c`` must be added. | ||
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.. HINT:: | ||
FTDI/FTDI-compatible cable users: the ``-d`` option lets you specify a specific FTDI device: | ||
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.. code-block:: bash | ||
openFPGALoader -d /dev/ttyUSBX | ||
When the ``-d`` option is not provided, openFPGALoader will opens the first FTDI adapter it finds. | ||
Therefore it is preferable to use this flag if your computer is connected to multiple FTDI devices. | ||
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Troubleshooting | ||
=============== | ||
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Please refer to :ref:`troubleshooting`. |
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