74438fcec5
* adc_cal: c2: Add efuse functions for reading calibration * adc_cal: c3: Add efuse functions for reading calibration * adc_cal: c6: Add efuse functions for reading calibration * adc_cal: Add extra traits to support calibration - `AdcCalScheme<ADCI>` implemented for each calibration scheme (basic, linear, curved) - `AdcCalEfuse` implemented for each ADC unit to get calibration data from efuse bits * adc_cal: Add basic ADC calibration scheme Basic calibration is related to setting some initial bias value to ADC unit. Such values usually is stored in efuse bit fields but also can be measured in runtime by connecting ADC input to ground internally. * adc_cal: Add line fitting ADC calibration scheme This scheme also includes basic calibration and implements gain correction based on reference point. Reference point is a pair of reference voltage and corresponding mean raw ADC value. Such raw values usually is stored in efuse bit fields for each supported attenuation. Possibly it also can be measured in runtime by connecting ADC to reference voltage internally. * adc_cal: Add curve fitting ADC calibration scheme This scheme also includes basic and linear and implements final polynomial error correction. * adc_cal: riscv: Add ADC calibration implementation for riscv chips * adc_cal: c2: Add calibrated ADC reading example This example uses line fitting calibration scheme by default. It periodically prints both raw measured value and computed millivolts. * adc_cal: c3: Add calibrated ADC reading example This example uses curve fitting calibration scheme by default. It periodically prints both raw measured value and computed millivolts. * adc_cal: c6: Add calibrated ADC reading example This example uses curve fitting calibration scheme by default. It periodically prints both raw measured value and computed millivolts. * adc_cal: riscv: Add changelog entry for ADC calibration
esp32c6-hal
no_std HAL for the ESP32-C6 from Espressif. Implements a number of the traits defined by embedded-hal.
This device uses the RISC-V ISA, which is officially supported by the Rust compiler via the riscv32imac-unknown-none-elf target. Refer to the Getting Started section below for more information.
Documentation
Getting Started
Installing the Rust Compiler Target
The compilation target for this device is officially supported via the stable release channel and can be installed via rustup:
$ rustup target add riscv32imac-unknown-none-elf
Supported boot methods
IDF Bootloader
The IDF second stage bootloader is the default bootloader solution.
By default, espflash fetches the required binaries (Bootloader and Partition Table) and flashes them onto the target device together with the Rust-based application firmware image.
Direct Boot
Direct Boot allows an application stored in the External Flash to be executed directly, without being copied into Internal RAM.
Booting the Hello World example using Direct Boot
Build the Hello World example with support for Direct Boot:
cargo build --release --example hello_world --features direct-boot
Then proceed to generating the application binary and flashing it onto the target device:
cargo espflash --release --format direct-boot --features direct-boot --example hello_world --monitor
The ROM Bootloader will identify the firmware image built with Direct Boot support and load it appropriately from the External Flash:
ESP-ROM:esp32c6-20220919
Build:Sep 19 2022
rst:0x1 (POWERON),boot:0x6e (SPI_FAST_FLASH_BOOT)
Hello world!
Hello world!
Hello world!
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.