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H7 RCC: Setup DBGMCU to enable debugging during wfi/wfe

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This commit is contained in:
Thales Fragoso
2021-05-20 22:16:01 -03:00
parent f9724fa576
commit 1689ab2f8b
1 changed files with 9 additions and 3 deletions
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12
embassy-stm32/src/rcc/h7/mod.rs
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@@ -5,7 +5,7 @@ use embassy::util::Unborrow;
use crate::fmt::{assert, panic}; use crate::fmt::{assert, panic};
use crate::pac::peripherals; use crate::pac::peripherals;
use crate::pac::rcc::vals::Timpre; use crate::pac::rcc::vals::Timpre;
use crate::pac::{RCC, SYSCFG}; use crate::pac::{DBGMCU, RCC, SYSCFG};
use crate::pwr::{Power, VoltageScale}; use crate::pwr::{Power, VoltageScale};
use crate::time::Hertz; use crate::time::Hertz;
@@ -365,15 +365,21 @@ impl<'d> Rcc<'d> {
/// ///
/// Set `enable_dma1` to true if you do not have at least one bus master (other than the CPU) /// Set `enable_dma1` to true if you do not have at least one bus master (other than the CPU)
/// enable during WFI/WFE /// enable during WFI/WFE
pub fn enable_debug_wfe(&mut self, enable_dma1: bool) { pub fn enable_debug_wfe(&mut self, _dbg: &mut peripherals::DBGMCU, enable_dma1: bool) {
use crate::pac::rcc::vals::Ahb1enrDma1en; use crate::pac::rcc::vals::Ahb1enrDma1en;
// NOTE(unsafe) We have exclusive access to the RCC // NOTE(unsafe) We have exclusive access to the RCC and DBGMCU
unsafe { unsafe {
if enable_dma1 { if enable_dma1 {
RCC.ahb1enr() RCC.ahb1enr()
.modify(|w| w.set_dma1en(Ahb1enrDma1en::ENABLED)); .modify(|w| w.set_dma1en(Ahb1enrDma1en::ENABLED));
} }
DBGMCU.cr().modify(|w| {
w.set_dbgsleep_d1(true);
w.set_dbgstby_d1(true);
w.set_dbgstop_d1(true);
});
} }
} }