diff --git a/boards/espressif/esp32c3_devkitc/Kconfig.defconfig b/boards/espressif/esp32c3_devkitc/Kconfig.defconfig new file mode 100644 index 00000000000..2e71f23c2d7 --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/Kconfig.defconfig @@ -0,0 +1,11 @@ +# ESP32C3 devkitc board configuration + +# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd. +# SPDX-License-Identifier: Apache-2.0 + +config HEAP_MEM_POOL_ADD_SIZE_BOARD + int + default 65535 if WIFI && BT + default 51200 if WIFI + default 40960 if BT + default 4096 diff --git a/boards/espressif/esp32c3_devkitc/Kconfig.esp32c3_devkitc b/boards/espressif/esp32c3_devkitc/Kconfig.esp32c3_devkitc new file mode 100644 index 00000000000..7e5744193f8 --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/Kconfig.esp32c3_devkitc @@ -0,0 +1,7 @@ +# ESP32C3 devkitc board configuration + +# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd. +# SPDX-License-Identifier: Apache-2.0 + +config BOARD_ESP32C3_DEVKITC + select SOC_ESP32C3_WROOM_02_N4 diff --git a/boards/espressif/esp32c3_devkitc/Kconfig.sysbuild b/boards/espressif/esp32c3_devkitc/Kconfig.sysbuild new file mode 100644 index 00000000000..8d3acb9e11d --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/Kconfig.sysbuild @@ -0,0 +1,10 @@ +# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd. +# SPDX-License-Identifier: Apache-2.0 + +choice BOOTLOADER + default BOOTLOADER_MCUBOOT +endchoice + +choice BOOT_SIGNATURE_TYPE + default BOOT_SIGNATURE_TYPE_NONE +endchoice diff --git a/boards/espressif/esp32c3_devkitc/board.cmake b/boards/espressif/esp32c3_devkitc/board.cmake new file mode 100644 index 00000000000..2f04d1fe886 --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/board.cmake @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: Apache-2.0 + +if(NOT "${OPENOCD}" MATCHES "^${ESPRESSIF_TOOLCHAIN_PATH}/.*") + set(OPENOCD OPENOCD-NOTFOUND) +endif() +find_program(OPENOCD openocd PATHS ${ESPRESSIF_TOOLCHAIN_PATH}/openocd-esp32/bin NO_DEFAULT_PATH) + +include(${ZEPHYR_BASE}/boards/common/esp32.board.cmake) +include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake) diff --git a/boards/espressif/esp32c3_devkitc/board.yml b/boards/espressif/esp32c3_devkitc/board.yml new file mode 100644 index 00000000000..22db88f664c --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/board.yml @@ -0,0 +1,5 @@ +board: + name: esp32c3_devkitc + vendor: espressif + socs: + - name: esp32c3 diff --git a/boards/espressif/esp32c3_devkitc/doc/index.rst b/boards/espressif/esp32c3_devkitc/doc/index.rst new file mode 100644 index 00000000000..02c7d75f8d4 --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/doc/index.rst @@ -0,0 +1,244 @@ +.. _esp32c3_devkitc: + +ESP32-C3 +######## + +Overview +******** + +ESP32-C3 is a single-core Wi-Fi and Bluetooth 5 (LE) microcontroller SoC, +based on the open-source RISC-V architecture. It strikes the right balance of power, +I/O capabilities and security, thus offering the optimal cost-effective +solution for connected devices. +The availability of Wi-Fi and Bluetooth 5 (LE) connectivity not only makes the device configuration easy, +but it also facilitates a variety of use-cases based on dual connectivity. [1]_ + +The features include the following: + +- 32-bit core RISC-V microcontroller with a maximum clock speed of 160 MHz +- 400 KB of internal RAM +- 802.11b/g/n/e/i +- A Bluetooth LE subsystem that supports features of Bluetooth 5 and Bluetooth Mesh +- Various peripherals: + + - 12-bit ADC with up to 6 channels + - TWAI compatible with CAN bus 2.0 + - Temperature sensor + - 3x SPI + - 1x I2S + - 1x I2C + - 2x UART + - LED PWM with up to 6 channels + +- Cryptographic hardware acceleration (RNG, ECC, RSA, SHA-2, AES) + +Supported Features +================== + +Current Zephyr's ESP32-C3-Devkitc board supports the following features: + ++------------+------------+-------------------------------------+ +| Interface | Controller | Driver/Component | ++============+============+=====================================+ +| UART | on-chip | serial port | ++------------+------------+-------------------------------------+ +| GPIO | on-chip | gpio | ++------------+------------+-------------------------------------+ +| PINMUX | on-chip | pinmux | ++------------+------------+-------------------------------------+ +| USB-JTAG | on-chip | hardware interface | ++------------+------------+-------------------------------------+ +| SPI Master | on-chip | spi | ++------------+------------+-------------------------------------+ +| Timers | on-chip | counter | ++------------+------------+-------------------------------------+ +| Watchdog | on-chip | watchdog | ++------------+------------+-------------------------------------+ +| TRNG | on-chip | entropy | ++------------+------------+-------------------------------------+ +| LEDC | on-chip | pwm | ++------------+------------+-------------------------------------+ +| SPI DMA | on-chip | spi | ++------------+------------+-------------------------------------+ +| TWAI | on-chip | can | ++------------+------------+-------------------------------------+ +| USB-CDC | on-chip | serial | ++------------+------------+-------------------------------------+ +| ADC | on-chip | adc | ++------------+------------+-------------------------------------+ +| Wi-Fi | on-chip | | ++------------+------------+-------------------------------------+ +| Bluetooth | on-chip | | ++------------+------------+-------------------------------------+ + +System requirements +******************* + +Prerequisites +============= + +Espressif HAL requires WiFi and Bluetooth binary blobs in order work. Run the command +below to retrieve those files. + +.. code-block:: console + + west blobs fetch hal_espressif + +.. note:: + + It is recommended running the command above after :file:`west update`. + +Building & Flashing +******************* + +Simple boot +=========== + +The board could be loaded using the single binary image, without 2nd stage bootloader. +It is the default option when building the application without additional configuration. + +.. note:: + + Simple boot does not provide any security features nor OTA updates. + +MCUboot bootloader +================== + +User may choose to use MCUboot bootloader instead. In that case the bootloader +must be build (and flash) at least once. + +There are two options to be used when building an application: + +1. Sysbuild +2. Manual build + +.. note:: + + User can select the MCUboot bootloader by adding the following line + to the board default configuration file. + + .. code:: cfg + + CONFIG_BOOTLOADER_MCUBOOT=y + +Sysbuild +======== + +The sysbuild makes possible to build and flash all necessary images needed to +bootstrap the board with the ESP32 SoC. + +To build the sample application using sysbuild use the command: + +.. zephyr-app-commands:: + :tool: west + :app: samples/hello_world + :board: esp32c3_devkitc + :goals: build + :west-args: --sysbuild + :compact: + +By default, the ESP32 sysbuild creates bootloader (MCUboot) and application +images. But it can be configured to create other kind of images. + +Build directory structure created by sysbuild is different from traditional +Zephyr build. Output is structured by the domain subdirectories: + +.. code-block:: + + build/ + ├── hello_world + │ └── zephyr + │ ├── zephyr.elf + │ └── zephyr.bin + ├── mcuboot + │ └── zephyr + │ ├── zephyr.elf + │ └── zephyr.bin + └── domains.yaml + +.. note:: + + With ``--sysbuild`` option the bootloader will be re-build and re-flash + every time the pristine build is used. + +For more information about the system build please read the :ref:`sysbuild` documentation. + +Manual build +============ + +During the development cycle, it is intended to build & flash as quickly possible. +For that reason, images can be build one at a time using traditional build. + +The instructions following are relevant for both manual build and sysbuild. +The only difference is the structure of the build directory. + +.. note:: + + Remember that bootloader (MCUboot) needs to be flash at least once. + +Build and flash applications as usual (see :ref:`build_an_application` and +:ref:`application_run` for more details). + +.. zephyr-app-commands:: + :zephyr-app: samples/hello_world + :board: esp32c3_devkitc + :goals: build + +The usual ``flash`` target will work with the ``esp32c3_devkitc`` board +configuration. Here is an example for the :ref:`hello_world` +application. + +.. zephyr-app-commands:: + :zephyr-app: samples/hello_world + :board: esp32c3_devkitc + :goals: flash + +Open the serial monitor using the following command: + +.. code-block:: shell + + west espressif monitor + +After the board has automatically reset and booted, you should see the following +message in the monitor: + +.. code-block:: console + + ***** Booting Zephyr OS vx.x.x-xxx-gxxxxxxxxxxxx ***** + Hello World! esp32c3_devkitc + +Debugging +********* + +As with much custom hardware, the ESP32-C3 modules require patches to +OpenOCD that are not upstreamed yet. Espressif maintains their own fork of +the project. The custom OpenOCD can be obtained at `OpenOCD ESP32`_ + +The Zephyr SDK uses a bundled version of OpenOCD by default. You can overwrite that behavior by adding the +``-DOPENOCD= -DOPENOCD_DEFAULT_PATH=`` +parameter when building. + +Here is an example for building the :ref:`hello_world` application. + +.. zephyr-app-commands:: + :zephyr-app: samples/hello_world + :board: esp32c3_devkitc + :goals: build flash + :gen-args: -DOPENOCD= -DOPENOCD_DEFAULT_PATH= + +You can debug an application in the usual way. Here is an example for the :ref:`hello_world` application. + +.. zephyr-app-commands:: + :zephyr-app: samples/hello_world + :board: esp32c3_devkitc + :goals: debug + +.. _`OpenOCD ESP32`: https://github.com/espressif/openocd-esp32/releases + +References +********** + +.. [1] https://www.espressif.com/en/products/socs/esp32-c3 +.. _ESP32C3 Devkitc User Guide: https://docs.espressif.com/projects/esp-dev-kits/en/latest/esp32c3/esp32-c3-devkitc-02 +.. _ESP32C3 Technical Reference Manual: https://espressif.com/sites/default/files/documentation/esp32-c3_technical_reference_manual_en.pdf +.. _ESP32C3 Datasheet: https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf diff --git a/boards/espressif/esp32c3_devkitc/esp32c3_devkitc-pinctrl.dtsi b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc-pinctrl.dtsi new file mode 100644 index 00000000000..f6add959a27 --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc-pinctrl.dtsi @@ -0,0 +1,52 @@ +/* + * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd. + * + * SPDX-License-Identifier: Apache-2.0 + */ + +#include +#include +#include + +&pinctrl { + + uart0_default: uart0_default { + group1 { + pinmux = ; + output-high; + }; + group2 { + pinmux = ; + bias-pull-up; + }; + }; + + spim2_default: spim2_default { + group1 { + pinmux = , + , + ; + }; + group2 { + pinmux = ; + output-low; + }; + }; + + i2c0_default: i2c0_default { + group1 { + pinmux = , + ; + bias-pull-up; + drive-open-drain; + output-high; + }; + }; + + twai_default: twai_default { + group1 { + pinmux = , + ; + }; + }; +}; diff --git a/boards/espressif/esp32c3_devkitc/esp32c3_devkitc.dts b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc.dts new file mode 100644 index 00000000000..50803e38940 --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc.dts @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd. + * + * SPDX-License-Identifier: Apache-2.0 + */ + +/dts-v1/; + +#include +#include "esp32c3_devkitc-pinctrl.dtsi" +#include + +/ { + model = "Espressif ESP32C3-DevkitC"; + compatible = "espressif,esp32c3"; + + chosen { + zephyr,sram = &sram0; + zephyr,console = &uart0; + zephyr,shell-uart = &uart0; + zephyr,flash = &flash0; + zephyr,code-partition = &slot0_partition; + zephyr,bt-hci = &esp32_bt_hci; + }; + + aliases { + sw0 = &user_button1; + i2c-0 = &i2c0; + watchdog0 = &wdt0; + }; + + gpio_keys { + compatible = "gpio-keys"; + user_button1: button_1 { + label = "User SW1"; + gpios = <&gpio0 9 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>; + zephyr,code = ; + }; + }; +}; + +&uart0 { + status = "okay"; + current-speed = <115200>; + pinctrl-0 = <&uart0_default>; + pinctrl-names = "default"; +}; + +&usb_serial { + /* requires resoldering of resistors on the board */ + status = "okay"; +}; + +&i2c0 { + status = "okay"; + clock-frequency = ; + pinctrl-0 = <&i2c0_default>; + pinctrl-names = "default"; +}; + +&trng0 { + status = "okay"; +}; + +&spi2 { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + pinctrl-0 = <&spim2_default>; + pinctrl-names = "default"; +}; + +&gpio0 { + status = "okay"; +}; + +&wdt0 { + status = "okay"; +}; + +&timer0 { + status = "disabled"; +}; + +&timer1 { + status = "disabled"; +}; + +&twai { + /* requires external CAN transceiver or jumper on RX and TX pins for loopback testing */ + status = "disabled"; + pinctrl-0 = <&twai_default>; + pinctrl-names = "default"; +}; + +&flash0 { + status = "okay"; + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + /* Reserve 60kB for the bootloader */ + boot_partition: partition@0 { + label = "mcuboot"; + reg = <0x00000000 0x0000F000>; + read-only; + }; + + /* Reserve 1024kB for the application in slot 0 */ + slot0_partition: partition@10000 { + label = "image-0"; + reg = <0x00010000 0x00100000>; + }; + + /* Reserve 1024kB for the application in slot 1 */ + slot1_partition: partition@110000 { + label = "image-1"; + reg = <0x00110000 0x00100000>; + }; + + /* Reserve 256kB for the scratch partition */ + scratch_partition: partition@210000 { + label = "image-scratch"; + reg = <0x00210000 0x00040000>; + }; + + storage_partition: partition@250000 { + label = "storage"; + reg = <0x00250000 0x00006000>; + }; + }; +}; + +&esp32_bt_hci { + status = "okay"; +}; diff --git a/boards/espressif/esp32c3_devkitc/esp32c3_devkitc.yaml b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc.yaml new file mode 100644 index 00000000000..876ee788553 --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc.yaml @@ -0,0 +1,22 @@ +identifier: esp32c3_devkitc +name: ESP32-C3 +type: mcu +arch: riscv +toolchain: + - zephyr +supported: + - adc + - gpio + - i2c + - watchdog + - uart + - dma + - pwm + - spi + - counter + - entropy +testing: + ignore_tags: + - net + - bluetooth +vendor: espressif diff --git a/boards/espressif/esp32c3_devkitc/esp32c3_devkitc_defconfig b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc_defconfig new file mode 100644 index 00000000000..ef633ce56a1 --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc_defconfig @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: Apache-2.0 + +CONFIG_MAIN_STACK_SIZE=2048 + +CONFIG_CONSOLE=y +CONFIG_SERIAL=y +CONFIG_UART_CONSOLE=y +CONFIG_GPIO=y diff --git a/boards/espressif/esp32c3_devkitc/support/openocd.cfg b/boards/espressif/esp32c3_devkitc/support/openocd.cfg new file mode 100644 index 00000000000..92a792fecb8 --- /dev/null +++ b/boards/espressif/esp32c3_devkitc/support/openocd.cfg @@ -0,0 +1,11 @@ +set ESP_RTOS none + +# ESP32C3 has built-in JTAG interface over USB port in pins GPIO18/GPIO19 (D-/D+). +# Uncomment the line below to enable USB debugging. +# source [find interface/esp_usb_jtag.cfg] + +# Otherwise, use external JTAG programmer as ESP-Prog +source [find interface/ftdi/esp32_devkitj_v1.cfg] + +source [find target/esp32c3.cfg] +adapter speed 5000 diff --git a/dts/riscv/espressif/esp32c3/esp32c3_wroom_n4.dtsi b/dts/riscv/espressif/esp32c3/esp32c3_wroom_n4.dtsi new file mode 100644 index 00000000000..8f0cfa6868c --- /dev/null +++ b/dts/riscv/espressif/esp32c3/esp32c3_wroom_n4.dtsi @@ -0,0 +1,12 @@ +/* + * Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd. + * + * SPDX-License-Identifier: Apache-2.0 + */ + +#include "esp32c3_common.dtsi" + +/* 4MB flash */ +&flash0 { + reg = <0x0 DT_SIZE_M(4)>; +};