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Merge #261 
261: MQTT settings and telemetry r=ryan-summers a=ryan-summers

This PR replaces https://github.com/quartiq/stabilizer/pull/242

This PR addresses #149 by exposing a simple MQTT-based settings interface

**TODO**:
- [x] Resolve mutable ownership issues in the `MqttInterface`
- [x] Expand settings interface to `lockin.rs`
- [x] Add all settings (not yet supported by `miniconf`)
- [x] ~~Finalize and publish the `miniconf` package~~ Deferred to the future.
- [x] Move `MqttInterface`-like behaviors over to `miniconf`
- [x] Move smoltcp-nal to a separate crate
- [x] Test on hardware
- [x] ~~Implement stabilizer telemetry~~: Deferred to future

Co-authored-by: Ryan Summers <ryan.summers@vertigo-designs.com>
Co-authored-by: Robert Jördens <rj@quartiq.de>
2021-02-19 10:06:39 +00:00
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.github ci: simplify nightly 2021-02-04 17:01:18 +01:00
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README.md

QUARTIQ Matrix Chat HITL (private)

Stabilizer Firmware

Flow diagram

Hardware

Features

  • dual channel
  • SPI ADC
  • SPI DAC
  • 500 kHz rate, timed sampling
  • 2 µs latency, unmatched between channels
  • f32 IIR math
  • generic biquad (second order) IIR filter
  • anti-windup
  • derivative kick avoidance

Limitations/TODOs

  • Fixed AFE gains
  • The IP and MAC address are hardcoded
  • Expose configurable limits
  • 100Base-T only
  • Digital IO, GPIO header, AFE header, EEM header are not handled

Hardware

See https://github.com/sinara-hw/Stabilizer

Minimal bootstrapping documentation

  • Clone or download this
  • Get rustup
  • Get cargo-binutils
  • rustup target add thumbv7em-none-eabihf
  • cargo build --release
  • Do not try the debug (default) mode. It is guaranteed to panic.

Using Cargo-embed

  • Install cargo-embed: cargo install cargo-embed
  • Program the device: cargo embed --bin dual-iir --release

Using GDB/OpenOCD

  • Get a recent openocd, a JTAG adapter ("st-link" or some clone) and everything connected and permissions setup. Most Nucleo boards have a detachable ST-Link v2 and are cheap.1
  • Get a multiarch gdb (or a cross arm gdb and edit .cargo/config accordingly)
  • openocd -f stabilizer.cfg and leave it running
  • cargo run --release

Using USB-DFU

  • Install the DFU USB tool (dfu-util)
  • Connect to the Micro USB connector below the RJ45
  • Short JC2/BOOT
  • cargo objcopy --release --bin dual-iir -- -O binary dual-iir.bin or arm-none-eabi-objcopy -O binary target/thumbv7em-none-eabihf/release/dual-iir dual-iir.bin
  • dfu-util -a 0 -s 0x08000000:leave -D dual-iir.bin

Using ST-Link virtual mass storage

  • cargo objcopy --release --bin dual-iir -- -O binary dual-iir.bin or arm-none-eabi-objcopy -O binary target/thumbv7em-none-eabihf/release/dual-iir dual-iir.bin
  • Connect the ST-Link debugger
  • copy dual-iir.bin to the NODE_H743ZI USB disk

Protocol

Stabilizer can be configured via MQTT under the topic stabilizer/settings/<setting>. Refer to miniconf for more information about topics.

  1. Build a cable: connect a standard 8 conductor ribbon with the wires numbered 1-8 to the pins on the St-Link v2 single row 2.54mm connector as 647513(82) ((i) marks an unused wire) and to the 1.27mm dual row on Stabilizer as 657483x2x1 (x marks an unused pin, enumeration is standard for dual row, as in the schematic). It's just folding the ribbon between wires 5 and 6. The signals on the ribbon are then NRST,TDI,TDO,TCK,TMS,3V3,GND,GND. ↩︎