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|
/*
#![no_std]
#![no_main]
mod blink;
mod led;
mod log;
mod usb;
use gd32vf103xx_hal::{
afio::AfioExt,
eclic::{self, EclicExt},
gpio::GpioExt,
pac::{self, Peripherals},
rcu::RcuExt,
serial::Serial,
time::{Hertz, MegaHertz},
timer::Timer,
};
use riscv::{
asm::wfi,
interrupt,
};
use riscv_rt::entry;
use usb_device::prelude::*;
use led::LED;
use usb::{USB, UsbBus};
static mut EP_MEMORY: [u32; 1024] = [0; 1024];
#[entry]
fn main(_hartid: usize) -> ! {
let p = Peripherals::take().expect("couldn't take peripherals");
pac::ECLIC::reset();
pac::ECLIC::set_threshold_level(eclic::Level::L0);
pac::ECLIC::set_level_priority_bits(eclic::LevelPriorityBits::L3P1);
let mut rcu = p.RCU
.configure()
.ext_hf_clock(MegaHertz(8))
.sysclk(MegaHertz(96))
.freeze();
let mut afio = p.AFIO.constrain(&mut rcu);
let gpioa = p.GPIOA.split(&mut rcu);
// TODO: figure out how to use the usb serial on the start board.
//
// this version has to be wired up physically.
let serial = Serial::new(
p.USART1,
(gpioa.pa2, gpioa.pa3),
Default::default(),
&mut afio,
&mut rcu,
);
let (tx, _rx) = serial.split();
log::init(tx);
let timer = Timer::<pac::TIMER6>::timer6(p.TIMER6, Hertz(5), &mut rcu);
let led = LED::new(gpioa.pa7);
let mut blink = blink::Task::new(timer, Hertz(5), led);
let usb = USB {
usb_global: p.USBFS_GLOBAL,
usb_device: p.USBFS_DEVICE,
usb_pwrclk: p.USBFS_PWRCLK,
pin_dm: gpioa.pa11,
pin_dp: gpioa.pa12,
hclk: rcu.clocks.hclk()
};
let usb_bus = UsbBus::new(usb, unsafe { &mut EP_MEMORY });
let mut usb_dev = UsbDeviceBuilder::new(&usb_bus, UsbVidPid(0x16c0, 0x27dd))
.manufacturer("Fake company")
.product("Enumeration test")
.serial_number("TEST")
.device_class(0)
.build();
//let mut serial = SerialPort::new(&bus_alloc);
unsafe { interrupt::enable() };
loop {
let mut can_sleep = true;
if let Ok(_) = blink.poll() {
can_sleep = false;
}
if usb_dev.poll(&mut []) {
logln!("usb");
can_sleep = false;
}
if can_sleep && false {
log!("!");
unsafe { wfi() };
}
}
}
#[export_name="ExceptionHandler"]
fn exception_handler(_frame: &riscv_rt::TrapFrame) -> ! {
spin();
}
#[export_name="DefaultHandler"]
fn default_handler() -> ! {
spin();
}
#[export_name="MachineTimer"]
fn machine_timer() {
spin();
}
*/
#![no_std]
#![no_main]
mod usb;
use riscv::asm::wfi;
use riscv_rt::entry;
use gd32vf103xx_hal::prelude::*;
use gd32vf103xx_hal::pac;
use usb::{USB, UsbBus};
use usb_device::prelude::*;
use usbd_serial::SerialPort;
static mut EP_MEMORY: [u32; 1024] = [0; 1024];
#[entry]
fn main() -> ! {
let dp = pac::Peripherals::take().unwrap();
// Configure clocks
let mut rcu = dp.RCU.configure()
.ext_hf_clock(8.mhz())
.sysclk(96.mhz())
.freeze();
assert!(rcu.clocks.usbclk_valid());
let gpioa = dp.GPIOA.split(&mut rcu);
let usb = USB {
usb_global: dp.USBFS_GLOBAL,
usb_device: dp.USBFS_DEVICE,
usb_pwrclk: dp.USBFS_PWRCLK,
pin_dm: gpioa.pa11,
pin_dp: gpioa.pa12,
hclk: rcu.clocks.hclk()
};
let usb_bus = UsbBus::new(usb, unsafe { &mut EP_MEMORY });
let mut serial = SerialPort::new(&usb_bus);
let mut usb_dev = UsbDeviceBuilder::new(&usb_bus, UsbVidPid(0x16c0, 0x27dd))
.manufacturer("Fake company")
.product("Enumeration test")
.serial_number("TEST")
.device_class(0)
.build();
loop {
if usb_dev.poll(&mut [&mut serial]) {
}
}
}
#[panic_handler]
fn panic(info: &core::panic::PanicInfo) -> ! {
// interrupt::free(|_cs| {
// log!("!!! panic ");
if let Some(loc) = info.location() {
// log!("in {}:{} ", loc.file(), loc.line());
}
if let Some(msg) = info.payload().downcast_ref::<&str>() {
// log!("⇒ {} ", msg);
}
// logln!("!!!");
// });
spin();
}
fn spin() -> ! {
loop { unsafe { wfi() } };
}
|
