Crate esp32_hal

no_std HAL for the ESP32 from Espressif.

Implements a number of the traits defined by the various packages in the embedded-hal repository.

Cargo Features

The available cargo features for this package are listed below, along with a brief description of each feature.

• async - Enable support for asynchronous operation, with interfaces provided by embedded-hal-async and embedded-io-async
• bluetooth - Enable support for using the Bluetooth radio
• debug - Enable debug features in the HAL (used for development)
• defmt - Enable defmt::Format on certain types
• eh1 - Implement the traits defined in the 1.0.0-xxx pre-releases of embedded-hal, embedded-hal-nb, and embedded-io
• embassy - Enable support for embassy, a modern asynchronous embedded framework
• embassy-executor-interrupt - Use the multicore-aware interrupt-mode embassy executor
• embassy-executor-thread - Use the multicore-aware thread-mode embassy executor
• embassy-time-timg0 - Enable the embassy time driver using the TIMG0 peripheral
• log - enable log output using the log crate
• psram_2m - Use externally connected PSRAM (2MB)
• psram_4m - Use externally connected PSRAM (4MB)
• psram_8m - Use externally connected PSRAM (8MB)
• rt - Runtime support
• ufmt - Implement the ufmt_write::uWrite trait for the UART driver
• vectored - Enable interrupt vectoring
• xtal26mhz - The target device uses a 26MHz crystal
• xtal40mhz - The target device uses a 40MHz crystal

Default Features

The rt, vectored, and xtal40mhz features are enabled by default.

Modules

• adc
• aes
  Advanced Encryption Standard (AES) support.
• analog
  Common module for analog functions
• clock
  Clock Control
• cpu_control
  Control CPU Cores (ESP32)
• dac
  Analog peripherals - Digital to Analog Converter
• delay
  Delay driver
• dma
  Direct Memory Access Commons
• efuse
  Reading of eFuses (ESP32)
• gpio
  General Purpose I/Os
• i2c
  I2C Driver
• i2s
  I2S Master
• interrupt
  Interrupt support
• ledc
  LEDC (LED PWM Controller) peripheral control
• macros
  Procedural macros
• mcpwm
  MCPWM (Motor Control Pulse Width Modulator) peripheral
• pcnt
  Pulse Counter peripheral driver
• peripheral
  Exclusive peripheral access
• peripherals
  Peripheral instance singletons (ESP32)
• prelude
  The prelude
• psram
  PSRAM “virtual peripheral” driver (ESP32)
• radio
  Wireless communication peripheral implementations
• reset
  Hardware and Software Reset
• rmt
  Remote Control Peripheral (RMT)
• rng
  Random Number Generator
• rom
  ESP ROM libraries
• rsa
  RSA Accelerator support.
• rtc_cntl
  RTC_CNTL (Real-Time Clock Control) and Low-power Management
• sha
  Secure Hash Algorithm peripheral driver
• spi
  Serial Peripheral Interface
• system
  System Control
• timer
  General-purpose timers
• trapframe
  State of the CPU saved when entering exception or interrupt
• twai
  Two-wire Automotive Interface (TWAI)
• uart
  UART driver
• xtensa_lx
• xtensa_lx_rt

Structs

• Delay
  Delay driver
• FlashSafeDma
  FlashSafeDma
• IO
  General Purpose Input/Output driver
• Rmt
  RMT Instance
• Rng
  Random number generator driver
• Rtc
  Low-power Management
• Rwdt
  RTC Watchdog Timer
• Spi
  SPI peripheral driver
• Timer
  General-purpose Timer driver
• Uart
  UART driver

Enums

• Cpu
  Available CPU cores

Functions

• get_core
  Which core the application is currently executing on

Attribute Macros

• entry
  Marks a function as the main function to be called on program start