NaxdyOrg/embassy
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

stm32g0: Add support for low-power run

Browse source
This commit is contained in:
Ben Gamari 2021-08-31 01:51:49 -04:00
parent 794798e225
commit 573e6ec373
1 changed files with 16 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
embassy-stm32/src/rcc/g0/mod.rs
View file

@ -49,7 +49,6 @@ impl Into<u8> for HSI16Prescaler {
}
}
impl Into<u8> for APBPrescaler {
fn into(self) -> u8 {
match self {
@ -83,6 +82,7 @@ pub struct Config {
mux: ClockSrc,
ahb_pre: AHBPrescaler,
apb_pre: APBPrescaler,
low_power_run: bool,
}
impl Default for Config {
@ -92,6 +92,7 @@ impl Default for Config {
mux: ClockSrc::HSI16(HSI16Prescaler::NotDivided),
ahb_pre: AHBPrescaler::NotDivided,
apb_pre: APBPrescaler::NotDivided,
low_power_run: false,
}
}
}
@ -114,6 +115,12 @@ impl Config {
self.apb_pre = pre;
self
}
#[inline]
pub fn low_power_run(mut self, on: bool) -> Self {
self.low_power_run = on;
self
}
}
/// RCC peripheral
@ -206,6 +213,14 @@ impl RccExt for RCC {
}
};
let pwr = pac::PWR;
if cfgr.low_power_run {
assert!(sys_clk.hz() <= 2_000_000.hz());
unsafe {
pwr.cr1().modify(|w| w.set_lpr(true));
}
}
Clocks {
sys: sys_clk.hz(),
ahb: ahb_freq.hz(),