Polish minor issues

Signed-off-by: Egor Savkin <es@m-labs.hk>

README.md

@@ -286,4 +286,4 @@ Please note that power doesn't correlate with the actual speed linearly.
 3. `fcurve <a> <b> <c>` - set coefficients of the controlling curve `a*x^2 + b*x + c`, where `x` is `abs_max_tec_i/MAX_TEC_I`, 
 i.e. receives values from 0 to 1 linearly tied to the maximum current. The controlling curve should produce values from 0 to 1,
 as below and beyond values would be substituted by 0 and 1 respectively.
-4. `fan-restore` - restore fan settings to defaults: `auto = true, a = 1.0, b = 0.0, c = 0.0`.
+4. `fan-restore` - restore fan settings to defaults: `auto = true, a = 1.0, b = 0.0, c = 0.04`.

flake.nix

@@ -69,7 +69,7 @@
         buildInputs = with pkgs; [
           rustPlatform.rust.rustc
           rustPlatform.rust.cargo
-          openocd dfu-util gcc-arm-embedded-10
+          openocd dfu-util
           ] ++ (with python3Packages; [
             numpy matplotlib
           ]);

src/command_parser.rs

@@ -1,7 +1,17 @@
 use core::fmt;
 use core::num::ParseIntError;
 use core::str::{from_utf8, Utf8Error};
-use nom::{IResult, branch::alt, bytes::complete::{is_a, tag, take_while1}, character::{is_digit, complete::{char, one_of}}, combinator::{complete, map, opt, value}, sequence::preceded, multi::{fold_many0, fold_many1}, error::ErrorKind, Needed};
+use nom::{
+    IResult,
+    branch::alt,
+    bytes::complete::{is_a, tag, take_while1},
+    character::{is_digit, complete::{char, one_of}},
+    combinator::{complete, map, opt, value},
+    sequence::preceded,
+    multi::{fold_many0, fold_many1},
+    error::ErrorKind,
+    Needed,
+};
 use num_traits::{Num, ParseFloatError};
 use serde::{Serialize, Deserialize};
 

src/main.rs

@@ -138,9 +138,9 @@ fn main() -> ! {
 
     usb::State::setup(usb);
 
-    let mut channels = RefCell::new(Channels::new(pins));
-
     let mut store = flash_store::store(dp.FLASH);
+
+    let mut channels = RefCell::new(Channels::new(pins));
     for c in 0..CHANNELS {
         match store.read_value::<ChannelConfig>(CHANNEL_CONFIG_KEY[c]) {
             Ok(Some(config)) =>