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stm32: use PAC enums for VOS.

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This commit is contained in:
Dario Nieuwenhuis
2023-09-18 03:00:59 +02:00
parent 0da793e5de
commit 4bfbcd6c72
11 changed files with 156 additions and 106 deletions
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25
embassy-stm32/src/rcc/f2.rs
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@ -203,7 +203,20 @@ pub struct PLLClocks {
pub pll48_freq: Hertz,
}
pub use super::bus::VoltageScale;
/// Voltage range of the power supply used.
///
/// Used to calculate flash waitstates. See
/// RM0033 - Table 3. Number of wait states according to Cortex®-M3 clock frequency
pub enum VoltageScale {
/// 2.7v to 4.6v
Range0,
/// 2.4v to 2.7v
Range1,
/// 2.1v to 2.4v
Range2,
/// 1.8v to 2.1v
Range3,
}
impl VoltageScale {
const fn wait_states(&self, ahb_freq: Hertz) -> Option<Latency> {
@ -211,7 +224,7 @@ impl VoltageScale {
// Reference: RM0033 - Table 3. Number of wait states according to Cortex®-M3 clock
// frequency
match self {
VoltageScale::Scale3 => {
VoltageScale::Range3 => {
if ahb_freq <= 16_000_000 {
Some(Latency::WS0)
} else if ahb_freq <= 32_000_000 {
@ -232,7 +245,7 @@ impl VoltageScale {
None
}
}
VoltageScale::Scale2 => {
VoltageScale::Range2 => {
if ahb_freq <= 18_000_000 {
Some(Latency::WS0)
} else if ahb_freq <= 36_000_000 {
@ -251,7 +264,7 @@ impl VoltageScale {
None
}
}
VoltageScale::Scale1 => {
VoltageScale::Range1 => {
if ahb_freq <= 24_000_000 {
Some(Latency::WS0)
} else if ahb_freq <= 48_000_000 {
@ -266,7 +279,7 @@ impl VoltageScale {
None
}
}
VoltageScale::Scale0 => {
VoltageScale::Range0 => {
if ahb_freq <= 30_000_000 {
Some(Latency::WS0)
} else if ahb_freq <= 60_000_000 {
@ -307,7 +320,7 @@ impl Default for Config {
hsi: true,
pll_mux: PLLSrc::HSI,
pll: PLLConfig::default(),
voltage: VoltageScale::Scale3,
voltage: VoltageScale::Range3,
mux: ClockSrc::HSI,
rtc: None,
lsi: false,