304245b328
19249: boards/gd32v: improve board definitions r=benpicco a=gschorcht ### Contribution description This PR provides some small improvements of the existing board definitions for GD32VF103 boards for more flexibel default configurations and documentation of the board peripherals: - Allow the remapping of SPI0 pins in SPI configuration (ae984b0bea59ba0803cd5418d1169f38a5fe3796) - More flexible I2C configuration (0c337583b4a0542c109794b903433f6fde2b8a10) The default I2C device configuration allows to define up to two I2C devices `I2C_DEV(0)` and `I2C_DEV(1)`. `I2C_DEV(0)` is always defined if the I2C peripheral is enabled by the module `periph_spi`. The second I2C device `I2C_DEV(1)` is only defined if `I2C_DEV_1_USED` is defined by the board. This allows to use the default configuration with one or two I2C devices depending on whether other peripherals are enabled that would collide with the I2C devices. - More flexible SPI configuration (edbf59e37e8172d2fc1f389d0ad165972a37311b) The default SPI device configuration allows to define up to two SPI devices `SPI_DEV(0)` and `SPI_DEV(1)`. `SPI_DEV(0)` is always defined if the SPI peripheral is enabled by the module `periph_spi`. The second SPI device `SPI_DEV(1)` is only defined if `SPI_DEV_1_USED` is defined by the board. This allows to use the default configuration with one or two SPI devices depending on whether other peripherals are enabled that would collide with the SPI devices. Furthermore, the CS signal in the SPI configuration is given by a define that can be overriden with another pin if the default CS signal is connected to an unused hardware. - Improve ADC config for Sipeed-Longan-Nano (c9c587ee0032327e92e457242dd3d023d1650279) The ADC configuration was too complex. It was hard to follow when certain ADC lines are available. Furthermore, the order of ADC lines did depend on the use of other peripherals. Now, either the TFT display is not connected and all ADC lines are available or the TFT display is connected and the second SPI device is used so that only the first 4 ADC lines are available. - Improve Kconfig for Sipeed-Longan-Nano (025f4fdf004538ff6a6325cbdc177bb69f46676d) Board-specific configuration not shown any longer directly in the top level menu but within a submenu. - Improve peripherals documentation (7f0d560dd86f921074d7567c2a93ee6558cae812, e24abe495a8c3c04f807706f80519272bf326620) Available peripherals for the board are now documented in two tables ordered by RIOT peripheral names and by pins. Although the different changes are small and mostly related to the documentation, I could split the PR if necessary. ### Testing Green CI ### Issues/PRs references Co-authored-by: Gunar Schorcht <gunar@schorcht.net>
The friendly Operating System for IoT!
RIOT is a real-time multi-threading operating system that supports a range of devices that are typically found in the Internet of Things (IoT): 8-bit, 16-bit and 32-bit microcontrollers.
RIOT is based on the following design principles: energy-efficiency, real-time capabilities, small memory footprint, modularity, and uniform API access, independent of the underlying hardware (this API offers partial POSIX compliance).
RIOT is developed by an international open source community which is independent of specific vendors (e.g. similarly to the Linux community). RIOT is licensed with LGPLv2.1, a copyleft license which fosters indirect business models around the free open-source software platform provided by RIOT, e.g. it is possible to link closed-source code with the LGPL code.
FEATURES
RIOT provides features including, but not limited to:
- a preemptive, tickless scheduler with priorities
- flexible memory management
- high resolution, long-term timers
- MTD abstraction layer
- File System integration
- support 200+ boards based on AVR, MSP430, ESP8266, ESP32, RISC-V, ARM7 and ARM Cortex-M
- the native port allows to run RIOT as-is on Linux and BSD. Multiple instances of RIOT running on a single machine can also be interconnected via a simple virtual Ethernet bridge or via a simulated IEEE 802.15.4 network (ZEP)
- IPv6
- 6LoWPAN (RFC4944, RFC6282, and RFC6775)
- UDP
- RPL (storing mode, P2P mode)
- CoAP
- OTA updates via SUIT
- MQTT
- USB (device mode)
- Display / Touchscreen support
- CCN-Lite
- LoRaWAN
- UWB
- Bluetooth (BLE) via NimBLE
GETTING RIOT
The most convenient way to get RIOT is to clone it via Git
$ git clone https://github.com/RIOT-OS/RIOT
this will ensure that you get all the newest features and bug fixes with the caveat of an ever changing work environment.
If you prefer things more stable, you can download the source code of one of our quarter annual releases via Github as ZIP file or tarball. You can also checkout a release in a cloned Git repository using
$ git pull --tags
$ git checkout <YYYY.MM>
For more details on our release cycle, check our documentation.
GETTING STARTED
- You want to start the RIOT? Just follow our quickstart guide or try this tutorial. For specific toolchain installation, follow instructions in the getting started page.
- The RIOT API itself can be built from the code using doxygen. The latest version of the documentation is uploaded daily to doc.riot-os.org.
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Do you have a question, want to discuss a new feature, or just want to present your latest project using RIOT? Come over to our forum and post to your hearts content.
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To contribute something to RIOT, please refer to our contributing document.
MAILING LISTS
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LICENSE
- Most of the code developed by the RIOT community is licensed under the GNU Lesser General Public License (LGPL) version 2.1 as published by the Free Software Foundation.
- Some external sources, especially files developed by SICS are published under a separate license.
All code files contain licensing information.
For more information, see the RIOT website: