LailaTheElf/embassy
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge pull request #4149 from embassy-rs/stm32-otg-fix-trdt

Browse Source 
stm32/otg: calculate TRDT using AHB freq instead of kernel freq.
This commit is contained in:
Dario Nieuwenhuis 2025-04-30 17:08:58 +00:00 committed by GitHub
commit 52e4c7c30c
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
3 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
embassy-stm32/build.rs
View File

@ -647,6 +647,8 @@ fn main() {
PeripheralRccKernelClock::Clock(clock) => clock_gen.gen_clock(p.name, clock),
};
let bus_clock_frequency = clock_gen.gen_clock(p.name, &rcc.bus_clock);
// A refcount leak can result if the same field is shared by peripherals with different stop modes
// This condition should be checked in stm32-data
let stop_mode = match rcc.stop_mode {
@ -660,6 +662,9 @@ fn main() {
fn frequency() -> crate::time::Hertz {
#clock_frequency
}
fn bus_frequency() -> crate::time::Hertz {
#bus_clock_frequency
}
const RCC_INFO: crate::rcc::RccInfo = unsafe {
crate::rcc::RccInfo::new(

2
embassy-stm32/src/rcc/mod.rs
View File

@ -97,6 +97,8 @@ pub(crate) unsafe fn get_freqs() -> &'static Clocks {
pub(crate) trait SealedRccPeripheral {
fn frequency() -> Hertz;
#[allow(dead_code)]
fn bus_frequency() -> Hertz;
const RCC_INFO: RccInfo;
}

2
embassy-stm32/src/usb/otg.rs
View File

@ -549,7 +549,7 @@ foreach_interrupt!(
);
fn calculate_trdt<T: Instance>(speed: Dspd) -> u8 {
let ahb_freq = T::frequency().0;
let ahb_freq = T::bus_frequency().0;
match speed {
Dspd::HIGH_SPEED => {
// From RM0431 (F72xx), RM0090 (F429), RM0390 (F446)