diff options
Diffstat (limited to 'src-riscv')
| l--------- | src-riscv/.#main.rs | 1 | ||||
| -rw-r--r-- | src-riscv/blink.rs | 70 | ||||
| -rw-r--r-- | src-riscv/boot.S | 11 | ||||
| -rw-r--r-- | src-riscv/led.rs | 42 | ||||
| -rw-r--r-- | src-riscv/log.rs | 36 | ||||
| -rwxr-xr-x | src-riscv/main.rs | 215 | ||||
| -rwxr-xr-x | src-riscv/usb.rs | 42 |
7 files changed, 0 insertions, 417 deletions
diff --git a/src-riscv/.#main.rs b/src-riscv/.#main.rs deleted file mode 120000 index 988fc15..0000000 --- a/src-riscv/.#main.rs +++ /dev/null @@ -1 +0,0 @@ -bjc@ditto.691749627316654132
\ No newline at end of file diff --git a/src-riscv/blink.rs b/src-riscv/blink.rs deleted file mode 100644 index 967cde6..0000000 --- a/src-riscv/blink.rs +++ /dev/null @@ -1,70 +0,0 @@ -use core::convert::Infallible; - -// use gd32vf103xx_hal as hal; -use stm32f30x_hal as hal; - -use hal::{ - //eclic::{self, EclicExt}, - pac::{self, Interrupt}, - prelude::*, - time::Hertz, - timer::{Event, Timer}, -}; -use nb; -use riscv::interrupt; - -use crate::led::LED; - -pub struct Task { - timer: Timer<pac::TIMER6>, - frequency: Hertz, - led: LED, -} - -static mut TIMER_FIRED: bool = false; - -impl Task { - pub fn new(mut timer: Timer<pac::TIMER6>, frequency: Hertz, led: LED) -> Self { - // pac::ECLIC::setup(Interrupt::TIMER6, eclic::TriggerType::RisingEdge, eclic::Level::L0, eclic::Priority::P3); - // unsafe { pac::ECLIC::unmask(Interrupt::TIMER6); } - // assert!(pac::ECLIC::is_enabled(Interrupt::TIMER6)); - timer.listen(Event::Update); - - Self { timer, frequency, led } - } - - pub fn poll(&mut self) -> nb::Result<(), Infallible> { - interrupt::free(|_cs| { - if unsafe { TIMER_FIRED } { - unsafe { TIMER_FIRED = false }; - self.led.toggle(); - self.timer.start(self.frequency); - } - }); - Err(nb::Error::WouldBlock) - } -} - -/* - * because i'm using ‘wfi’ to sleep as much as possible, i need to - * actually schedule the timer to fire an interrupt. that, in turn, - * requires a handler. - * - * why? because, for efficiency reasons, ‘_irq_handler’ uses the - * bumblebee core ‘jalmnxti’ csr, and the default entry in the irq - * vector is ‘0’. so the core jumps to 0, which is the ‘_start’ entry - * point. but it does this *from the interrupt*, which masks the - * interrupt (because it's currently being serviced), so any - * subsequent firings are never triggered, nor any interrupts at lower - * priority. - * - * so it looks like the core resets every other time it's - * started. adding a real isr avoids these problems. - */ -#[export_name="TIMER6"] -fn timer6() { - // logln!("I timer6 I"); - let regs = unsafe { &*pac::TIMER6::ptr() }; - regs.intf.write(|w| w.upif().clear_bit()); - unsafe { TIMER_FIRED = true }; -} diff --git a/src-riscv/boot.S b/src-riscv/boot.S deleted file mode 100644 index d31e5fe..0000000 --- a/src-riscv/boot.S +++ /dev/null @@ -1,11 +0,0 @@ - .global _start - .section .text.init -_start: - .option push - .option norelax - la gp, __global_pointer$ - .option pop - la sp, _stack_top - - csrr a0, mhartid - tail main diff --git a/src-riscv/led.rs b/src-riscv/led.rs deleted file mode 100644 index 536121b..0000000 --- a/src-riscv/led.rs +++ /dev/null @@ -1,42 +0,0 @@ -use gd32vf103xx_hal::{ - gpio::{Floating, Input, Output, PushPull, Pxx, State, gpioa::PA7}, -}; -use embedded_hal::digital::v2::OutputPin; - -pub struct LED { - pin: Pxx<Output<PushPull>>, - state: State, -} - -impl LED { - pub fn new(pin: PA7<Input<Floating>>) -> Self { - let mut p = pin.into_push_pull_output().downgrade(); - p.set_low().ok(); - Self { pin: p, state: State::Low } - } - - pub fn is_on(&self) -> bool { - match self.state { - State::High => true, - State::Low => false, - } - } - - pub fn on(&mut self) { - self.state = State::High; - self.pin.set_high().ok(); - } - - pub fn off(&mut self) { - self.state = State::Low; - self.pin.set_low().ok(); - } - - pub fn toggle(&mut self) { - if self.is_on() { - self.off(); - } else { - self.on(); - } - } -} diff --git a/src-riscv/log.rs b/src-riscv/log.rs deleted file mode 100644 index ddb6792..0000000 --- a/src-riscv/log.rs +++ /dev/null @@ -1,36 +0,0 @@ -use core::fmt::{write, Arguments}; - -use gd32vf103xx_hal::{ - serial::Tx, - pac::USART1, -}; -use riscv::interrupt::{self, Mutex}; - -#[macro_export] -macro_rules! log { - ($($args:tt)+) => { - $crate::log::log_args(core::format_args!($($args)+)) - } -} - -#[macro_export] -macro_rules! logln { - () => ({ kprint!("\r\n") }); - ($fmt: literal $(, $($arg: tt)+)?) => { - log!(concat!($fmt, "\n") $(, $($arg)+)?) - } -} - -static mut TX: Mutex<Option<Tx<USART1>>> = Mutex::new(None); - -pub fn init(tx: Tx<USART1>) { - interrupt::free(|_cs| { - unsafe { TX.get_mut().insert(tx) }; - }); -} - -pub fn log_args(args: Arguments) { - interrupt::free(|_cs| { - unsafe { TX.get_mut().as_mut().map(|tx| write(tx, args)) }; - }); -} diff --git a/src-riscv/main.rs b/src-riscv/main.rs deleted file mode 100755 index 68fa8da..0000000 --- a/src-riscv/main.rs +++ /dev/null @@ -1,215 +0,0 @@ -#![no_std] -#![no_main] - -mod blink; -mod led; -mod log; -mod usb; - -// use gd32vf103xx_hal as hal; -use stm32f30x_hal as hal; - -use 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); - logln!("luchie starting"); - - 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() - }; - logln!("hclk: {:?}", rcu.clocks.hclk().0); - - 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(); -} - -#[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() } }; -} - -/* -#![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() } }; -} -*/ diff --git a/src-riscv/usb.rs b/src-riscv/usb.rs deleted file mode 100755 index 1ec36af..0000000 --- a/src-riscv/usb.rs +++ /dev/null @@ -1,42 +0,0 @@ -use gd32vf103xx_hal::pac; -use gd32vf103xx_hal::gpio::{Input, Floating, gpioa::{PA11, PA12}}; -use gd32vf103xx_hal::time::Hertz; -pub use synopsys_usb_otg::UsbBus; -use synopsys_usb_otg::UsbPeripheral; - -#[allow(dead_code)] -pub struct USB { - pub usb_global: pac::USBFS_GLOBAL, - pub usb_device: pac::USBFS_DEVICE, - pub usb_pwrclk: pac::USBFS_PWRCLK, - pub pin_dm: PA11<Input<Floating>>, - pub pin_dp: PA12<Input<Floating>>, - pub hclk: Hertz, -} - -unsafe impl Sync for USB {} - -unsafe impl UsbPeripheral for USB { - const REGISTERS: *const () = pac::USBFS_GLOBAL::ptr() as *const (); - - const HIGH_SPEED: bool = false; - const FIFO_DEPTH_WORDS: usize = 320; - const ENDPOINT_COUNT: usize = 4; - - fn enable() { - let rcu = unsafe { &*pac::RCU::ptr() }; - - riscv::interrupt::free(|_| { - // Enable USB peripheral - rcu.ahben.modify(|_, w| w.usbfsen().set_bit()); - - // Reset USB peripheral - rcu.ahbrst.modify(|_, w| w.usbfsrst().set_bit()); - rcu.ahbrst.modify(|_, w| w.usbfsrst().clear_bit()); - }); - } - - fn ahb_frequency_hz(&self) -> u32 { - self.hclk.0 - } -} |