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Merge #40
40: build(deps): bump serde from 1.0.100 to 1.0.101 r=jordens a=dependabot-preview[bot]

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.100 to 1.0.101.
<details>
<summary>Release notes</summary>

*Sourced from [serde's releases](https://github.com/serde-rs/serde/releases).*

> ## v1.0.101
> - Report errors on malformed serde attributes, like `#[serde(rename =)]` -- the compiler used to reject these itself, but when the compiler relaxed its requirements on attribute syntax these malformed attributes began silently being ignored by serde_derive
> 
> - Eliminate unused variable warning when using skip_serializing inside a tuple variant of an adjacently tagged enum  ([#1617](https://github-redirect.dependabot.com/serde-rs/serde/issues/1617), thanks [@&#8203;arilotter](https://github.com/arilotter))
> 
> - Support skip attribute inside of newtype variants ([#1622](https://github-redirect.dependabot.com/serde-rs/serde/issues/1622), thanks [@&#8203;Xaeroxe](https://github.com/Xaeroxe))
</details>
<details>
<summary>Commits</summary>

- [`4aba6fa`](4aba6fae78) Release 1.0.101
- [`fe06bc2`](fe06bc2f88) More concise explanation of allow(unused_variables)
- [`8dfb4cd`](8dfb4cd02f) Merge pull request [#1617](https://github-redirect.dependabot.com/serde-rs/serde/issues/1617) from arilotter/master
- [`d1ade37`](d1ade37827) Ignore new too_many_lines lint
- [`9de4924`](9de49241fb) Bug fix for [#1610](https://github-redirect.dependabot.com/serde-rs/serde/issues/1610)
- [`b24d501`](b24d50160a) Remove use of ref keyword from serde_derive
- [`e46463e`](e46463e69f) Add tests for attribute parse errors
- [`a3157c9`](a3157c9572) Produce errors on attr that fails to parse as Meta
- [`0d47226`](0d4722680a) Use flatten() to iterate serde meta items
- [`7ab1259`](7ab12597bb) Un-wrap error message strings for better grepping
- Additional commits viewable in [compare view](https://github.com/serde-rs/serde/compare/v1.0.100...v1.0.101)
</details>
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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
2019-10-13 12:01:37 +00:00
.cargo cargo: gdb-multicarch 2019-03-20 09:48:44 +00:00
.github try github actions 2019-09-11 17:28:53 +02:00
doc cargo: tweak 2019-03-29 19:34:31 +01:00
src fix Unix permissions 2019-09-13 13:52:24 +08:00
.gitignore start 2019-03-18 12:56:26 +01:00
.travis.yml add bors 2019-06-03 17:22:38 +02:00
CHANGELOG.md add changelog 2019-05-28 13:23:31 +02:00
Cargo.lock build(deps): bump serde from 1.0.100 to 1.0.101 2019-09-17 04:31:27 +00:00
Cargo.toml fix Unix permissions 2019-09-13 13:52:24 +08:00
LICENSE readme, license 2019-03-20 18:33:35 +00:00
README.md README: add note about debug 2019-06-07 11:55:10 +02:00
memory.x ethernet: tweak 2019-04-28 14:06:56 +00:00
openocd.gdb iir: tweak, add offset 2019-03-29 18:33:32 +00:00
stabilizer.cfg working 2019-03-18 13:10:00 +00:00
stabilizer.py cleanup, robustify 2019-05-28 10:15:20 +00:00
stabilizer_pid.png png 2019-05-09 16:40:35 +02:00
stabilizer_pid.svg README: diagram and photo 2019-05-09 16:05:36 +02:00

README.md

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
  • rustup override add nightly
  • rustup target add thumbv7em-none-eabihf
  • cargo build --release
  • Do not try the debug (default) mode. It is guaranteed to panic.

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 stabilizer -- -O binary stabilizer.bin or arm-none-eabi-objcopy -O binary target/thumbv7em-none-eabihf/release/stabilizer stabilizer.bin
  • dfu-util -a 0 -s 0x08000000:leave -D stabilizer.bin
  • cargo objcopy --release --bin stabilizer -- -O binary stabilizer.bin or arm-none-eabi-objcopy -O binary target/thumbv7em-none-eabihf/release/stabilizer stabilizer.bin
  • Connect the ST-Link debugger
  • copy stabilizer.bin to the NODE_H743ZI USB disk

Protocol

Stabilizer can be configured via newline-delimited JSON over TCP. It listens on port 1235. stabilizer.py contains a reference implementation of the protocol.


  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. ↩︎