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stm32/dma: make lowlevel api take ptrs instead of slices.

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This commit is contained in:
Dario Nieuwenhuis
2022-01-19 15:59:25 +01:00
parent 97ab859f00
commit 3d27a0e7cb
3 changed files with 48 additions and 29 deletions
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14
embassy-stm32/src/dma/dma.rs
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@ -84,15 +84,16 @@ pub(crate) unsafe fn init() {
pac::dma_channels! {
($channel_peri:ident, $dma_peri:ident, dma, $channel_num:expr, $dmamux:tt) => {
impl crate::dma::sealed::Channel for crate::peripherals::$channel_peri {
unsafe fn start_write<W: Word>(&mut self, request: Request, buf: &[W], reg_addr: *mut W) {
unsafe fn start_write<W: Word>(&mut self, request: Request, buf: *const [W], reg_addr: *mut W) {
let (ptr, len) = super::slice_ptr_parts(buf);
low_level_api::start_transfer(
pac::$dma_peri,
$channel_num,
request,
vals::Dir::MEMORYTOPERIPHERAL,
reg_addr as *const u32,
buf.as_ptr() as *mut u32,
buf.len(),
ptr as *mut u32,
len,
true,
vals::Size::from(W::bits()),
#[cfg(dmamux)]
@ -121,15 +122,16 @@ pac::dma_channels! {
)
}
unsafe fn start_read<W: Word>(&mut self, request: Request, reg_addr: *mut W, buf: &mut [W]) {
unsafe fn start_read<W: Word>(&mut self, request: Request, reg_addr: *const W, buf: *mut [W]) {
let (ptr, len) = super::slice_ptr_parts_mut(buf);
low_level_api::start_transfer(
pac::$dma_peri,
$channel_num,
request,
vals::Dir::PERIPHERALTOMEMORY,
reg_addr as *const u32,
buf.as_ptr() as *mut u32,
buf.len(),
ptr as *mut u32,
len,
true,
vals::Size::from(W::bits()),
#[cfg(dmamux)]