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- //! Serial interface DMA RX transfer test
- #![deny(unsafe_code)]
- #![deny(warnings)]
- #![no_main]
- #![no_std]
- extern crate cortex_m_rt as rt;
- #[macro_use(singleton)]
- extern crate cortex_m;
- extern crate panic_semihosting;
- extern crate stm32f1xx_hal as hal;
- use cortex_m::asm;
- use hal::prelude::*;
- use hal::serial::Serial;
- use hal::stm32f103xx;
- use rt::{entry, exception, ExceptionFrame};
- #[entry]
- fn main() -> ! {
- let p = stm32f103xx::Peripherals::take().unwrap();
- let mut flash = p.FLASH.constrain();
- let mut rcc = p.RCC.constrain();
- let clocks = rcc.cfgr.freeze(&mut flash.acr);
- let mut afio = p.AFIO.constrain(&mut rcc.apb2);
- let channels = p.DMA1.split(&mut rcc.ahb);
- let mut gpioa = p.GPIOA.split(&mut rcc.apb2);
- // let mut gpiob = p.GPIOB.split(&mut rcc.apb2);
- // USART1
- let tx = gpioa.pa9.into_alternate_push_pull(&mut gpioa.crh);
- let rx = gpioa.pa10;
- // USART1
- // let tx = gpiob.pb6.into_alternate_push_pull(&mut gpiob.crl);
- // let rx = gpiob.pb7;
- // USART2
- // let tx = gpioa.pa2.into_alternate_push_pull(&mut gpioa.crl);
- // let rx = gpioa.pa3;
- // USART3
- // let tx = gpiob.pb10.into_alternate_push_pull(&mut gpiob.crh);
- // let rx = gpiob.pb11;
- let serial = Serial::usart1(
- p.USART1,
- (tx, rx),
- &mut afio.mapr,
- 9_600.bps(),
- clocks,
- &mut rcc.apb2,
- );
- let rx = serial.split().1;
- let buf = singleton!(: [u8; 8] = [0; 8]).unwrap();
- let (_buf, _c, _rx) = rx.read_exact(channels.5, buf).wait();
- asm::bkpt();
- loop {}
- }
- #[exception]
- fn HardFault(ef: &ExceptionFrame) -> ! {
- panic!("{:#?}", ef);
- }
- #[exception]
- fn DefaultHandler(irqn: i16) {
- panic!("Unhandled exception (IRQn = {})", irqn);
- }
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