From 0697914182f88b73ec99f4fed82d7022ff16f2ce Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Thu, 5 Sep 2019 23:30:42 +0200
Subject: [PATCH] upgrade to rust edition 2018

---
 firmware/Cargo.toml  |  1 +
 firmware/src/main.rs | 15 ++-------------
 2 files changed, 3 insertions(+), 13 deletions(-)

diff --git a/firmware/Cargo.toml b/firmware/Cargo.toml
index 133a054..c76b4a9 100644
--- a/firmware/Cargo.toml
+++ b/firmware/Cargo.toml
@@ -2,6 +2,7 @@
 name = "ionpak-firmware"
 version = "1.0.0"
 authors = ["whitequark <whitequark@whitequark.org>"]
+edition = "2018"
 
 [build-dependencies]
 walkdir = "1.0"
diff --git a/firmware/src/main.rs b/firmware/src/main.rs
index b3a638c..95f6d50 100644
--- a/firmware/src/main.rs
+++ b/firmware/src/main.rs
@@ -2,17 +2,7 @@
 #![no_std]
 #![no_main]
 
-extern crate libm;
-extern crate cortex_m;
-#[macro_use]
-extern crate cortex_m_rt;
-extern crate tm4c129x;
-extern crate smoltcp;
-extern crate crc;
-extern crate embedded_hal;
-extern crate nb;
-extern crate cortex_m_semihosting;
-
+use cortex_m_rt::entry;
 use core::fmt::{self, Write};
 use embedded_hal::blocking::delay::DelayUs;
 use smoltcp::time::Instant;
@@ -42,9 +32,8 @@ pub fn panic_fmt(info: &core::panic::PanicInfo) -> ! {
     loop {}
 }
 
-#[macro_use]
 mod board;
-use board::gpio::Gpio;
+use self::board::gpio::Gpio;
 mod ethmac;
 mod ad7172;