TODO.md

Jupyter:

• terminal should run bash
• terminal middle mouse button paste should be fixed, it works well in PYNQ, since the latest Jupyter code is used, it might be just an upstream regression
• there is this error in the log: 404 GET /jupyter/nbextensions/widgets/notebook/js/extension.js so some widgets are not working
• rethink start/trigger/stop synchronization
• each channel should have own UIO DT node and driver, so they could be used by separate applications
• UIO devices should be opened exclusively, to avoid conflicts between applications
• FPGA image should not be reloaded by default, to avoid crashing other applications already using the FPGA
• add device tree overlay and FPGA manager support

FPGA:

• replace undocumented system bus with AXI4 Lite
• move CPU accessible registers out from processing modules
• separate the code into smaller modules connected over AXI4-Stream
• rethink generator and osciloscope SW interface sequences
• sestructure registers into a hierarchy
• generalize trigger modes
• write configurable PLL
• write streaming benches
• Scope:
  • use DMA from Xilinx
  • continuous mode
  • trigger mode

U-Boot:

• Remove source file patch, which enables modifying the boot sequence stored in the EEPROM environment. A better solution would be to use a script to load only parts of the environment.

Linux:

• Write IIO drivers for streaming data from/to ADC/DAC.
• Update to kernel 4.6 (tag xilinx-v2016.3)
  • We already ported the simplest of our patches.
  • The Lantiq PHY driver needed an update, Pavel Did most of the work. There is now a patch available for the upstream kernel. https://www.spinics.net/lists/netdev/msg379071.html https://www.spinics.net/lists/netdev/msg379072.html But it does not work. I updated Pavel's code to be closer to the the upstream patch and this one works. I also asked the author of the patch for help, we will see.
  • The FPGA manager patch will be difficult to apply. It requires devicetree overlay changes only upstreamed in 4.8. https://lkml.org/lkml/2016/11/1/392 https://www.spinics.net/lists/devicetree/msg147528.html I tried to merge upstream v4.8 into xilinx-v2016.3, there are some nontrivial conflicts to solve. For now we will wait for Xilinx to port kernel 4.8.

OS:

• Rethink user management and security.
• Create a single UIO device for FPGA v0.94 and handle access permissions using UDEV rules

Bazaar:

• replace current JSON libraries with precompiled ones installed as Debian packages
• move our code into a dynamic module, and use the system Nginx
• perhaps, recode Lua code into C, so Lua can be removed from Nginx
• make sure our module creates a response to a HTTP request, our log is now filled with warnings due to missing responses
• integrate redpitaya.so library, it is not used elsewhere
• use API to get Zynq DNA (there are 2 instances)
• We should use hierarchical inheritance to reduce the ammount of configuration lines in nginx.conf.

API:

• move type definitins (structures, constants) to header files
• remove middle API layer
• avoid using read modify write access to registers

Applications:

• replace kiss FFT with NE10 library (already available in Debian)

SCPI:

• migrate to latest upstream
• push our patches upstream

TODO

• Fix bugs.
• Decrease the amount of duplicated code and move common components to shared.
• Bring OS & ecosystem sources together as they compose one package.
• Comment the code extensively in Doxygen style. Provide Doxygen documentation.
• Simplify Test/monitor.