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safety

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This commit is contained in:
Jörn-Michael Miehe 2024-03-23 14:54:36 +00:00
parent decf910b55
commit 2553740729
1 changed files with 3 additions and 1 deletions
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4
bluepill-rs/src/dmx.rs
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@ -6,7 +6,7 @@ type TxDma = dma::TxDma<serial::Tx<pac::USART1>, dma::dma1::C4>;
type DMXUniverse<const DMX_LEN: usize> = &'static mut [u8; DMX_LEN]; type DMXUniverse<const DMX_LEN: usize> = &'static mut [u8; DMX_LEN];
type DMXTransfer<const DMX_LEN: usize> = dma::Transfer<dma::R, DMXUniverse<DMX_LEN>, TxDma>; type DMXTransfer<const DMX_LEN: usize> = dma::Transfer<dma::R, DMXUniverse<DMX_LEN>, TxDma>;
pub enum DMX<const DMX_LEN: usize = 512> { pub enum DMX<const DMX_LEN: usize = DMX_LEN_MAX> {
Idle(Option<TxDma>, Option<DMXUniverse<DMX_LEN>>), Idle(Option<TxDma>, Option<DMXUniverse<DMX_LEN>>),
Busy(Option<DMXTransfer<DMX_LEN>>), Busy(Option<DMXTransfer<DMX_LEN>>),
} }
@ -20,6 +20,8 @@ impl<const DMX_LEN: usize> DMX<DMX_LEN> {
where where
PINS: serial::Pins<pac::USART1>, PINS: serial::Pins<pac::USART1>,
{ {
assert!(DMX_LEN <= DMX_LEN_MAX);
serial.reconfigure(250_000.bps(), &clocks).unwrap(); serial.reconfigure(250_000.bps(), &clocks).unwrap();
Self::Idle(Some(serial.tx.with_dma(channel)), None) Self::Idle(Some(serial.tx.with_dma(channel)), None)