PlatformIO has pre-built settings for the most popular embedded boards. This list is available:
Embedded Boards Explorer (Web)
platformio boards (CLI command)
Nevertheless, PlatformIO allows one to create own board or override existing board’s settings. All data is declared using JSON-style via associative array (name/value pairs).
The key fields:
build data will be used by Development Platforms and Frameworks builders
frameworks is the list with supported Frameworks
platform name of Development Platforms
upload upload settings which depend on the platform
{
"build": {
"extra_flags": "-DHELLO_PLATFORMIO",
"f_cpu": "16000000L",
"hwids": [
[
"0x1234",
"0x0013"
],
[
"0x4567",
"0x0013"
]
],
"mcu": "%MCU_TYPE_HERE%"
},
"frameworks": ["%LIST_WITH_SUPPORTED_FRAMEWORKS%"],
"name": "My Test Board",
"upload": {
"maximum_ram_size": 2048,
"maximum_size": 32256
},
"url": "http://example.com",
"vendor": "MyCompany"
}
Create boards directory in core_dir if it
doesn’t exist.
Create myboard.json file in this boards directory.
Search available boards via platformio boards command. You should see
myboard board.
Now, you can use myboard for the board option in
“platformio.ini” (Project Configuration File).
Note
You can have custom boards per project. In this case, please put your board’s JSON files to boards_dir.
Please take a look at the source code of
PlatformIO Development Platforms
and navigate to boards folder of the repository.