Struct esp32_hal::mcpwm::PeripheralClockConfig

pub struct PeripheralClockConfig<'a> { /* private fields */ }

Clock configuration of the MCPWM peripheral

Implementations

impl<'a> PeripheralClockConfig<'a>

pub fn with_prescaler( clocks: &'a Clocks<'_>, prescaler: u8 ) -> PeripheralClockConfig<'a>

Get a clock configuration with the given prescaler.

With standard system clock configurations the input clock to the MCPWM peripheral is 160 MHz.

The peripheral clock frequency is calculated as: peripheral_clock = input_clock / (prescaler + 1)

pub fn with_frequency( clocks: &'a Clocks<'_>, target_freq: Rate<u32, 1, 1> ) -> Result<PeripheralClockConfig<'a>, FrequencyError>

Get a clock configuration with the given frequency.

Note:

This will try to select an appropriate prescaler for the PeripheralClockConfig::with_prescaler method. If the calculated prescaler is not in the range 0..u8::MAX FrequencyError will be returned.

With standard system clock configurations the input clock to the MCPWM peripheral is 160 MHz.

Only divisors of the input clock (160 Mhz / 1, 160 Mhz / 2, …, 160 Mhz / 256) are representable exactly. Other target frequencies will be rounded up to the next divisor.

pub fn frequency(&self) -> Rate<u32, 1, 1>

Get the peripheral clock frequency.

Note:

The actual value is rounded down to the nearest u32 value

pub fn timer_clock_with_prescaler( &self, period: u16, mode: PwmWorkingMode, prescaler: u8 ) -> TimerClockConfig<'a>

Get a timer clock configuration with the given prescaler.

The resulting timer frequency depends of the chosen timer::PwmWorkingMode.

PwmWorkingMode::Increase or PwmWorkingMode::Decrease

timer_frequency = peripheral_clock / (prescaler + 1) / (period + 1)

PwmWorkingMode::UpDown

timer_frequency = peripheral_clock / (prescaler + 1) / (2 * period)

pub fn timer_clock_with_frequency( &self, period: u16, mode: PwmWorkingMode, target_freq: Rate<u32, 1, 1> ) -> Result<TimerClockConfig<'a>, FrequencyError>

Get a timer clock configuration with the given frequency.

Note:

This will try to select an appropriate prescaler for the timer. If the calculated prescaler is not in the range 0..u8::MAX FrequencyError will be returned.

See PeripheralClockConfig::timer_clock_with_prescaler for how the frequency is calculated.

Trait Implementations

impl<'a> Clone for PeripheralClockConfig<'a>

fn clone(&self) -> PeripheralClockConfig<'a>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for PeripheralClockConfig<'a>