c581d2590b
* Implement BlockSizeUser for ShaContexts * Use max CPU speed * Only measure the computation * Clean up
esp-hal
Bare-metal (no_std) hardware abstraction layer for Espressif devices.
Implements a number of blocking and, where applicable, async traits from the various packages in the embedded-hal repository.
For help getting started with this HAL, please refer to The Rust on ESP Book and the documentation.
Documentation
Supported Devices
| Chip | Datasheet | Technical Reference Manual | Target |
|---|---|---|---|
| ESP32 | ESP32 | ESP32 | xtensa-esp32-none-elf |
| ESP32-C2 | ESP32-C2 | ESP32-C2 | riscv32imc-unknown-none-elf |
| ESP32-C3 | ESP32-C3 | ESP32-C3 | riscv32imc-unknown-none-elf |
| ESP32-C5 | ESP32-C5 | ESP32-C5 | riscv32imac-unknown-none-elf |
| ESP32-C6 | ESP32-C6 | ESP32-C6 | riscv32imac-unknown-none-elf |
| ESP32-H2 | ESP32-H2 | ESP32-H2 | riscv32imac-unknown-none-elf |
| ESP32-S2 | ESP32-S2 | ESP32-S2 | xtensa-esp32s2-none-elf |
| ESP32-S3 | ESP32-S3 | ESP32-S3 | xtensa-esp32s3-none-elf |
Peripheral support
| Driver | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-H2 | ESP32-S2 | ESP32-S3 |
|---|---|---|---|---|---|---|---|---|
| ADC | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |
| AES | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |
| ASSIST_DEBUG | ⚒️ | ⚒️ | ❌ | ⚒️ | ⚒️ | ⚒️ | ||
| Analog Voltage Comparator | ❌ | |||||||
| Bit Scrambler | ❌ | |||||||
| Bluetooth | ⚒️ | ⚒️ | ⚒️ | ❌ | ⚒️ | ⚒️ | ⚒️ | |
| Camera interface | ❌ | ❌ | ⚒️ | |||||
| DAC | ⚒️ | ⚒️ | ||||||
| Dedicated GPIO | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |
| DMA | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| DS | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ||
| ECC | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ||||
| Ethernet | ❌ | |||||||
| ETM | ❌ | ⚒️ | ⚒️ | |||||
| GPIO | ✔️ | ✔️ | ✔️ | ⚒️ | ✔️ | ✔️ | ✔️ | ✔️ |
| HMAC | ⚒️ | ❌ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ||
| I2C master | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| I2C slave | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | |
| I2S | ⚒️ | ⚒️ | ❌ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |
| IEEE 802.15.4 | ❌ | ⚒️ | ⚒️ | |||||
| Interrupts | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| IOMUX | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| Key Manager | ❌ | |||||||
| LEDC | ⚒️ | ⚒️ | ⚒️ | ❌ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| LP I2C master | ⚒️ | ⚒️ | ||||||
| LP UART | ❌ | ⚒️ | ||||||
| MCPWM | ⚒️ | ❌ | ⚒️ | ⚒️ | ⚒️ | |||
| PARL_IO | ⚒️ | ⚒️ | ⚒️ | |||||
| PCNT | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ||
| PHY | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| PSRAM | ⚒️ | ❌ | ⚒️ | ⚒️ | ||||
| RGB display | ⚒️ | ❌ | ⚒️ | |||||
| RMT | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |
| RNG | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| RSA | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |
| RTC Timekeeping | ⚒️ | ⚒️ | ⚒️ | ❌ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| SDIO host | ⚒️ | ⚒️ | ||||||
| SDIO slave | ⚒️ | ❌ | ⚒️ | |||||
| SHA | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| Light/deep sleep | ⚒️ | ⚒️ | ⚒️ | ❌ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| SPI master | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| SPI slave | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| SYSTIMER | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |
| Temperature sensor | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |
| Timers | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
| Touch | ⚒️ | ❌ | ❌ | ❌ | ||||
| TWAI / CAN / CANFD | ⚒️ | ⚒️ | ❌ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |
| UART | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| UHCI | ❌ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ❌ | ⚒️ | |
| ULP (FSM) | ⚒️ | ⚒️ | ⚒️ | |||||
| ULP (RISC-V) | ❌ | ⚒️ | ⚒️ | ⚒️ | ||||
| USB OTG FS | ⚒️ | ⚒️ | ||||||
| USB Serial/JTAG | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | |||
| WIFI | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ | ⚒️ |
- Empty cell: not available
- ❌: Not supported
- ⚒️: Partial support
- ✔️: Supported
unstable feature
The stable feature set is designed to remain consistent and reliable. Other parts guarded by the unstable feature, however, are still under active development and may undergo breaking changes and are disabled by default.
Minimum Supported Rust Version (MSRV)
This crate is guaranteed to compile when using the latest stable Rust version at the time of the crate's release. It might compile with older versions, but that may change in any new release, including patches.
License
Licensed under either of:
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.