# k210_hal::prelude - Rust
Prelude
Keywords: rust, rustlang, rust-lang, prelude

# Module k210_hal::prelude

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Prelude

## Re-exports

`pub use crate::serial::SerialExt as _k210_hal_serial_SerialExt;`
`pub use crate::time::U32Ext as _k210_hal_time_U32Ext;`
`pub use crate::fpioa::FpioaExt as _k210_hal_fpioa_FpioaExt;`
`pub use crate::sysctl::SysctlExt as _k210_hal_sysctl_SysctlExt;`
`pub use crate::gpio::GpioExt as _k210_hal_gpio_GpioExt;`
`pub use crate::gpiohs::GpiohsExt as _k210_hal_gpiohs_GpiohsExt;`
`pub use crate::plic::PlicExt as _k210_hal_plic_PlicExt;`

## Traits

_embedded_hal_Capture

Input capture

_embedded_hal_Pwm

Pulse Width Modulation

_embedded_hal_PwmPin

A single PWM channel / pin

_embedded_hal_Qei

Quadrature encoder interface

_embedded_hal_adc_OneShot

ADCs that sample on single channels per request, and do so at the time of the request.

_embedded_hal_blocking_delay_DelayMs

Millisecond delay

_embedded_hal_blocking_delay_DelayUs

Microsecond delay

_embedded_hal_blocking_i2c_Read

Blocking read

_embedded_hal_blocking_i2c_Write

Blocking write

_embedded_hal_blocking_i2c_WriteRead

Blocking write + read

_embedded_hal_blocking_rng_Read

Blocking read

_embedded_hal_blocking_serial_Write

Write half of a serial interface (blocking variant)

_embedded_hal_blocking_spi_Transfer

Blocking transfer

_embedded_hal_blocking_spi_Write

Blocking write

_embedded_hal_digital_InputPin

Single digital input pin

_embedded_hal_digital_OutputPin

Single digital push-pull output pin

_embedded_hal_digital_ToggleableOutputPin

Output pin that can be toggled

_embedded_hal_rng_Read

Nonblocking stream of random bytes.

_embedded_hal_serial_Read

Read half of a serial interface

_embedded_hal_serial_Write

Write half of a serial interface

_embedded_hal_spi_FullDuplex

Full duplex (master mode)

_embedded_hal_timer_CountDown

A count down timer

_embedded_hal_watchdog_Watchdog

Feeds an existing watchdog to ensure the processor isn’t reset. Sometimes commonly referred to as “kicking” or “refreshing”.

_embedded_hal_watchdog_WatchdogDisable

Disables a running watchdog timer so the processor won’t be reset.

_embedded_hal_watchdog_WatchdogEnable

Enables A watchdog timer to reset the processor if software is frozen or stalled.

_k210_hal_stdout_Write

A trait for writing or formatting into Unicode-accepting buffers or streams.