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// Copyright 2019 Robin Krahl <robin.krahl@ireas.org>
// SPDX-License-Identifier: GPL-3.0-or-later
#![no_std]
#![no_main]
extern crate panic_halt;
#[macro_use]
mod util;
mod commands;
mod crc;
mod device;
mod hid;
use cortex_m::asm::delay;
use cortex_m_rt::entry;
use embedded_hal::digital::v2::OutputPin;
use hal::prelude::*;
use hal::usb::{Peripheral, UsbBus};
use usb_device::class::UsbClass;
use crate::crc::Stm32Crc;
use crate::device::Nitrokey;
use crate::hid::HidClass;
#[entry]
fn main() -> ! {
let p = hal::stm32::Peripherals::take().unwrap();
p.RCC.ahbenr.modify(|_, w| w.crcen().set_bit());
let crc = Stm32Crc::new(p.CRC);
let mut flash = p.FLASH.constrain();
let mut rcc = p.RCC.constrain();
let clocks = rcc
.cfgr
.use_hse(8.mhz())
.sysclk(48.mhz())
.pclk1(24.mhz())
.freeze(&mut flash.acr);
assert!(clocks.usbclk_valid(), "USB clocks not valid");
let mut gpioa = p.GPIOA.split(&mut rcc.apb2);
let mut pin_dp = gpioa.pa12.into_push_pull_output(&mut gpioa.crh);
pin_dp.set_low().unwrap();
delay(clocks.sysclk().0 / 100);
let pin_dp = pin_dp.into_floating_input(&mut gpioa.crh);
let pin_dm = gpioa.pa11;
let usb = Peripheral {
usb: p.USB,
pin_dm,
pin_dp,
};
let usb_bus = UsbBus::new(usb);
let mut usb_class = HidClass::new(Nitrokey::new(crc), &usb_bus);
let mut usb_dev = device::create_usb_device(&usb_bus);
loop {
if usb_dev.poll(&mut [&mut usb_class]) {
usb_class.poll();
}
}
}
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