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mark new unsafe

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This commit is contained in:
xoviat 2021-01-06 14:31:43 -06:00
parent 1c3b7541cb
commit 31ba052f14
2 changed files with 20 additions and 18 deletions
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5
embassy-stm32f4-examples/src/serial.rs
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@ -8,6 +8,7 @@
use cortex_m::singleton; use cortex_m::singleton;
use cortex_m_rt::entry; use cortex_m_rt::entry;
use embassy::executor::{task, Executor}; use embassy::executor::{task, Executor};
use embassy::uart::Uart;
use embassy::util::Forever; use embassy::util::Forever;
use embassy_stm32f4::interrupt; use embassy_stm32f4::interrupt;
use embassy_stm32f4::serial; use embassy_stm32f4::serial;
@ -27,6 +28,7 @@ async fn run(dp: stm32::Peripherals, cp: cortex_m::Peripherals) {
.pclk1(24.mhz()) .pclk1(24.mhz())
.freeze(); .freeze();
unsafe {
let mut serial = serial::Serial::new( let mut serial = serial::Serial::new(
gpioa.pa9.into_alternate_af7(), gpioa.pa9.into_alternate_af7(),
gpioa.pa10.into_alternate_af7(), gpioa.pa10.into_alternate_af7(),
@ -39,12 +41,11 @@ async fn run(dp: stm32::Peripherals, cp: cortex_m::Peripherals) {
9600.bps(), 9600.bps(),
clocks, clocks,
); );
let buf = singleton!(: [u8; 30] = [0; 30]).unwrap(); let buf = singleton!(: [u8; 30] = [0; 30]).unwrap();
buf[5] = 0x01; buf[5] = 0x01;
serial.send(buf).await; serial.send(buf).await;
}
} }
static EXECUTOR: Forever<Executor> = Forever::new(); static EXECUTOR: Forever<Executor> = Forever::new();

3
embassy-stm32f4/src/serial.rs
View File

@ -57,7 +57,8 @@ static STATE: State = State {
static mut INSTANCE: *const Serial<USART1, Stream7<DMA2>, Stream2<DMA2>> = ptr::null_mut(); static mut INSTANCE: *const Serial<USART1, Stream7<DMA2>, Stream2<DMA2>> = ptr::null_mut();
impl Serial<USART1, Stream7<DMA2>, Stream2<DMA2>> { impl Serial<USART1, Stream7<DMA2>, Stream2<DMA2>> {
pub fn new( // Leaking futures is forbidden!
pub unsafe fn new(
txd: PA9<Alternate<AF7>>, txd: PA9<Alternate<AF7>>,
rxd: PA10<Alternate<AF7>>, rxd: PA10<Alternate<AF7>>,
tx_int: interrupt::DMA2_STREAM7Interrupt, tx_int: interrupt::DMA2_STREAM7Interrupt,