### PlatformIO Board Configuration Examples

Source: https://docs.platformio.org/en/stable/boards/ststm32/grasshopper_l082cz

Complete PlatformIO configuration examples for the Grasshopper-L082CZ board. Shows basic setup, hardware parameter overrides, and upload protocol selection. Each configuration example demonstrates different aspects of board customization and project setup.

```ini
[env:grasshopper_l082cz]
platform = ststm32
board = grasshopper_l082cz
```

```ini
[env:grasshopper_l082cz]
platform = ststm32
board = grasshopper_l082cz

; change microcontroller
board_build.mcu = stm32l082czy6

; change MCU frequency
board_build.f_cpu = 32000000L
```

```ini
[env:grasshopper_l082cz]
platform = ststm32
board = grasshopper_l082cz

upload_protocol = dfu
```

--------------------------------

### PlatformIO OLIMEX ESP32-PoE Configuration Examples

Source: https://docs.platformio.org/en/stable/boards/espressif32/esp32-poe

Configuration examples for PlatformIO project targeting OLIMEX ESP32-PoE board. Shows basic setup, board parameter overrides, and upload protocol selection. Requires PlatformIO Core or IDE with espressif32 platform support.

```ini
[env:esp32-poe]
platform = espressif32
board = esp32-poe
```

```ini
[env:esp32-poe]
platform = espressif32
board = esp32-poe

; change microcontroller
board_build.mcu = esp32

; change MCU frequency
board_build.f_cpu = 240000000L
```

```ini
[env:esp32-poe]
platform = espressif32
board = esp32-poe

upload_protocol = esptool
```

--------------------------------

### USB Host Shield Example Configuration

Source: https://docs.platformio.org/en/latest/integration/ci/appveyor

Complete AppVeyor configuration example for USB_Host_Shield_2.0 project, demonstrating multiple test cases and external library dependencies.

```YAML
build: off
environment:

  matrix:
    - PLATFORMIO_CI_SRC: "examples\\Bluetooth\\PS3SPP\\PS3SPP.ino"
    - PLATFORMIO_CI_SRC: "examples\\pl2303\\pl2303_gps\\pl2303_gps.ino"

install:
    - cmd: git submodule update --init --recursive
    - cmd: SET PATH=%PATH%;C:\Python27\Scripts
    - cmd: pip install -U platformio
    - cmd: git clone https://github.com/xxxajk/spi4teensy3.git C:\spi4teensy

test_script:
    - cmd: pio ci --lib="." --lib="C:\\spi4teensy" --board=uno --board=teensy31 --board=due
```

--------------------------------

### PlatformIO ESP32C3 Board Configuration Examples

Source: https://docs.platformio.org/en/stable/boards/espressif32/weactstudio_esp32c3coreboard

PlatformIO configuration examples for WeAct Studio ESP32C3CoreBoard. Shows basic board setup with default settings and advanced configuration with custom MCU and frequency parameters. Use the first example for simple projects and the second for customized builds.

```ini
[env:weactstudio_esp32c3coreboard]
platform = espressif32
board = weactstudio_esp32c3coreboard
```

```ini
[env:weactstudio_esp32c3coreboard]
platform = espressif32
board = weactstudio_esp32c3coreboard

; change microcontroller
board_build.mcu = esp32c3

; change MCU frequency
board_build.f_cpu = 160000000L
```

--------------------------------

### PlatformIO Installation and CLI Commands

Source: https://docs.platformio.org/en/latest/integration/ide/cloud9

Commands for installing PlatformIO Core in Cloud9 environment and basic project initialization. Includes installation script execution and project creation for specific development boards.

```Shell Script
sudo python -c "$(curl -fsSL https://raw.githubusercontent.com/platformio/platformio/develop/scripts/get-platformio.py)"
```

```Shell Script
pio project init --board <ID>

# initialize project for Arduino Uno
pio project init --board uno
```

--------------------------------

### PlatformIO Board Configuration Examples

Source: https://docs.platformio.org/en/stable/boards/espressif32/nodemcu-32s2

Configuration examples for Ai-Thinker NodeMCU-32S2 board using PlatformIO. Shows basic board setup and advanced configuration with build options. Requires PlatformIO extension and espressif32 platform. Basic configuration sets platform and board ID, while advanced configuration allows overriding default MCU settings like frequency and microcontroller type.

```ini
[env:nodemcu-32s2]
platform = espressif32
board = nodemcu-32s2


```

```ini
[env:nodemcu-32s2]
platform = espressif32
board = nodemcu-32s2

; change microcontroller
board_build.mcu = esp32s2

; change MCU frequency
board_build.f_cpu = 240000000L


```

--------------------------------

### Arduino Blink program in C++ for PlatformIO

Source: https://docs.platformio.org/en/latest/integration/ide/visualstudio

Simple Arduino Blink example written in C++. Demonstrates basic setup and loop functions, toggling the built‑in LED with one‑second delays. Compatible with the Arduino framework in PlatformIO.

```C++
#include "Arduino.h"

void setup()
{
  pinMode(LED_BUILTIN, OUTPUT);  // set pin as output
}

void loop()
{
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on
  delay(1000);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off
  delay(1000);                       // wait for a second
}
```

--------------------------------

### PlatformIO Board Configuration Examples

Source: https://docs.platformio.org/en/stable/boards/espressif32/nano32

Complete set of PlatformIO configuration examples for the MakerAsia Nano32 board including basic setup, advanced overrides, and upload protocol configuration. These examples demonstrate how to configure board-specific settings like MCU type, frequency, and upload protocols in platformio.ini files.

```ini
[env:nano32]
platform = espressif32
board = nano32
```

```ini
[env:nano32]
platform = espressif32
board = nano32

; change microcontroller
board_build.mcu = esp32

; change MCU frequency
board_build.f_cpu = 240000000L
```

```ini
[env:nano32]
platform = espressif32
board = nano32

upload_protocol = esptool
```

--------------------------------

### Install PlatformIO Core with wget (macOS/Linux)

Source: https://docs.platformio.org/en/stable/core/installation/methods/installer-script

Installs or upgrades PlatformIO Core using the `wget` command to download the installer script and then executes it with `python3`. This method is an alternative to `curl` for macOS and Linux systems.

```shell
wget -O get-platformio.py https://raw.githubusercontent.com/platformio/platformio-core-installer/master/get-platformio.py
python3 get-platformio.py
```

--------------------------------

### Create symlinks for PlatformIO CLI tools (Unix/Linux)

Source: https://docs.platformio.org/en/stable/core/installation/shell-commands

Creates symbolic links for PlatformIO executables in a directory on the user's PATH, enabling easy access to `platformio`, `pio`, and `piodebuggdb`. Two methods are provided: user‑local symlinks and system‑wide symlinks (requires sudo).

```Shell
ln -s ~/.platformio/penv/bin/platformio ~/.local/bin/platformio
ln -s ~/.platformio/penv/bin/pio ~/.local/bin/pio
ln -s ~/.platformio/penv/bin/piodebuggdb ~/.local/bin/piodebuggdb
```

```Shell
mkdir -p /usr/local/bin
ln -s ~/.platformio/penv/bin/platformio /usr/local/bin/platformio
ln -s ~/.platformio/penv/bin/pio /usr/local/bin/pio
ln -s ~/.platformio/penv/bin/piodebuggdb /usr/local/bin/piodebuggdb
```

--------------------------------

### pio lib uninstall command example

Source: https://docs.platformio.org/en/latest/core/userguide/lib/cmd_uninstall

Demonstrates a practical example of uninstalling a library from global storage, showing the expected output format and confirmation message.

```bash
> pio lib -g uninstall AsyncMqttClient

Library Storage: /storage/dir/...
Uninstalling AsyncMqttClient @ 0.2.0:   [OK]
```

--------------------------------

### AppVeyor YAML Example for USB_Host_Shield_2.0 with PlatformIO

Source: https://docs.platformio.org/en/stable/integration/ci/appveyor

Specific example for integrating USB_Host_Shield_2.0 project using pio ci in AppVeyor, cloning extra libraries and testing multiple examples on various boards. Depends on git submodules and Python; inputs are example INO files and boards like uno; outputs CI test reports; limited to specified libraries and may need repo-specific adjustments.

```yaml
build: off
environment:

  matrix:
    - PLATFORMIO_CI_SRC: "examples\\Bluetooth\\PS3SPP\\PS3SPP.ino"
    - PLATFORMIO_CI_SRC: "examples\\pl2303\\pl2303_gps\\pl2303_gps.ino"

install:
    - cmd: git submodule update --init --recursive
    - cmd: SET PATH=%PATH%;C:\Python27\Scripts
    - cmd: pip install -U platformio
    - cmd: git clone https://github.com/xxxajk/spi4teensy3.git C:\spi4teensy

test_script:
    - cmd: pio ci --lib="." --lib="C:\\spi4teensy" --board=uno --board=teensy31 --board=due

```

--------------------------------

### PlatformIO pio lib install Command Usage Examples

Source: https://docs.platformio.org/en/latest/core/userguide/lib/cmd_install

This command installs libraries for PlatformIO projects from the Library Registry, repositories, or local files. It requires a platformio.ini file for project dependencies and supports options like environment specification, global installation, and force reinstall. Limitations include deprecation and the need to rebuild project index for IDE integration if issues arise.

```bash
pio lib [STORAGE_OPTIONS] install [OPTIONS] [LIBRARY...]

# RECOMMENDED
# install all project dependencies declared via "lib_deps"
# (run it from a project root where is located "platformio.ini")
pio lib install [OPTIONS]

# install project dependent library
# (run it from a project root where is located "platformio.ini")
pio lib install [OPTIONS] [LIBRARY...]

# install dependencies for the specific project environment
# (run it from a project root where is located "platformio.ini")
pio lib -e myenv install [OPTIONS] [LIBRARY...]
pio lib -d /path/to/platformio/project -e myenv install [OPTIONS] [LIBRARY...]

# install to global storage (NOT RECOMMENDED)
pio lib --global install [OPTIONS] [LIBRARY...]
pio lib -g install [OPTIONS] [LIBRARY...]

# install to custom storage
pio lib --storage-dir /path/to/dir install [OPTIONS] [LIBRARY...]
pio lib -d /path/to/dir1 -d /path/to/dir2 install [OPTIONS] [LIBRARY...]

# [LIBRARY...] forms
pio lib [STORAGE_OPTIONS] install (with no args, install project dependencies from "lib_deps")
pio lib [STORAGE_OPTIONS] install <ownername/name>
pio lib [STORAGE_OPTIONS] install <ownername/name>@<version>
pio lib [STORAGE_OPTIONS] install <ownername/name>@<version range>
pio lib [STORAGE_OPTIONS] install <zip or tarball url>
pio lib [STORAGE_OPTIONS] install file://<zip or tarball file>
pio lib [STORAGE_OPTIONS] install file://<folder>
pio lib [STORAGE_OPTIONS] install <repository>
pio lib [STORAGE_OPTIONS] install <name>=<repository> (name it should have locally)
pio lib [STORAGE_OPTIONS] install <repository#tag> ("tag" can be commit, branch or tag)
```

--------------------------------

### PlatformIO DigiX Configuration Examples

Source: https://docs.platformio.org/en/stable/boards/atmelsam/digix

Configuration examples for the Digistump DigiX board in PlatformIO. These INI-based configurations demonstrate the basic board setup using the 'digix' board ID and advanced customization options for MCU settings. The first example shows a minimal configuration, while the second demonstrates overriding default microcontroller and frequency settings.

```ini
[env:digix]
platform = atmelsam
board = digix


```

```ini
[env:digix]
platform = atmelsam
board = digix

; change microcontroller
board_build.mcu = at91sam3x8e

; change MCU frequency
board_build.f_cpu = 84000000L


```

--------------------------------

### PlatformIO Board Configuration Examples

Source: https://docs.platformio.org/en/latest/boards/atmelsam/adafruit_metro_m4_airliftlite

Complete set of PlatformIO configuration examples for Adafruit Metro M4 AirLift Lite. Includes basic board setup, custom board settings, and upload protocol configuration. Requires PlatformIO Core or IDE. Default upload protocol is sam-ba with alternatives atmel-ice and jlink.

```ini
[env:adafruit_metro_m4_airliftlite]
platform = atmelsam
board = adafruit_metro_m4_airliftlite
```

```ini
[env:adafruit_metro_m4_airliftlite]
platform = atmelsam
board = adafruit_metro_m4_airliftlite

; change microcontroller
board_build.mcu = samd51j19a

; change MCU frequency
board_build.f_cpu = 120000000L
```

```ini
[env:adafruit_metro_m4_airliftlite]
platform = atmelsam
board = adafruit_metro_m4_airliftlite

upload_protocol = sam-ba
```

--------------------------------

### PlatformIO Build and Upload Commands

Source: https://docs.platformio.org/en/stable/core/quickstart

Essential PlatformIO CLI commands for building, uploading, and cleaning projects. Supports both all-environment and specific-environment operations for flexible project management.

```bash
# Process (build) all environments
pio run

# Build and upload firmware to all devices
pio run --target upload

# Clean project (delete compiled objects)
pio run --target clean

# Process only uno environment
pio run -e uno

# Build and upload only for uno
pio run -e uno -t upload
```

--------------------------------

### Test Case Setup (C)

Source: https://docs.platformio.org/en/stable/tutorials/ststm32/stm32cube_debugging_unit_testing

Shows partial implementation of test setup function for GPIO initialization. Demonstrates LED pin configuration for testing.

```c
#include "../src/main.h"
#include <unity.h>

void setUp(void)
{
  LED_GPIO_CLK_ENABLE();
  GPIO_InitTypeDef GPIO_InitStruct;
  GPIO_InitStruct.Pin = LED_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
```

--------------------------------

### AppVeyor YAML Config Using pio ci for PlatformIO Libraries

Source: https://docs.platformio.org/en/stable/integration/ci/appveyor

This setup employs pio ci for testing PlatformIO libraries or examples in AppVeyor, specifying source files via matrix and boards. It handles submodules and PlatformIO installation; inputs include source paths and board IDs; outputs test results; suitable for libraries with extra lib/board options, but requires YAML matrix for multiple sources.

```yaml
build: off
environment:

  matrix:
    - PLATFORMIO_CI_SRC: "path\\to\\source\\file.c"
    - PLATFORMIO_CI_SRC: "path\\to\\source\\file.ino"
    - PLATFORMIO_CI_SRC: "path\\to\\source\\directory"

install:
    - cmd: git submodule update --init --recursive
    - cmd: SET PATH=%PATH%;C:\Python27\Scripts
    - cmd: pip install -U platformio

test_script:
    - cmd: pio ci --board=<ID_1> --board=<ID_2> --board=<ID_N>

```

--------------------------------

### pio debug - Launch GDB with Initialization File

Source: https://docs.platformio.org/en/latest/core/userguide/cmd_debug

Demonstrates launching a GDB instance and loading an initial configuration file using the `--interface=gdb` and `--` options to pass GDB options.

```cli
pio debug --interface=gdb -- -x .pioinit
... 
Loading section .text, size 0x2c98 lma 0x4000
Loading section .ramfunc, size 0x60 lma 0x6c98
Loading section .data, size 0x100 lma 0x6cf8
Start address 0x47b0, load size 11768
Transfer rate: 4 KB/sec, 3922 bytes/write.
target halted due to debug-request, current mode: Thread
xPSR: 0x81000000 pc: 0x000028f4 msp: 0x20002c00
target halted due to debug-request, current mode: Thread
xPSR: 0x81000000 pc: 0x000028f4 msp: 0x20002c00
Breakpoint 2 at 0x413a: file src/main.cpp, line 26.
```

--------------------------------

### Configure STM32F103RE Board in platformio.ini

Source: https://docs.platformio.org/en/stable/boards/ststm32/genericSTM32F103RE

Basic configuration setup for the STM32F103RE board in PlatformIO. Defines the board ID and platform. This is the minimum required configuration to start using the board.

```ini
[env:genericSTM32F103RE]
platform = ststm32
board = genericSTM32F103RE
```

--------------------------------

### PlatformIO CLI: Update Libraries (Examples)

Source: https://docs.platformio.org/en/stable/core/userguide/lib/cmd_update

Examples demonstrating how to use the 'pio lib update' command. This includes updating all libraries in global storage and updating specific libraries by name in global storage. The output shows the process of checking and installing updated library versions.

```bash
> pio lib -g update

Library Storage: /storage/dir/...
Updating ESP8266_SSD1306 @ 3.2.3:   [Up-to-date]
Updating EngduinoMagnetometer @ 3.1.0:  [Up-to-date]
Updating IRremote @ 2.2.1:  [Up-to-date]
Updating Json @ 5.4.0:  [Out-of-date]
LibraryManager: Installing id=64 @ 5.6.4
Downloading  [####################################]  100%
Unpacking  [####################################]  100%
Json @ 5.6.4 has been successfully installed!
Updating PJON @ 1fb26fd:    [Checking]
git version 2.7.4 (Apple Git-66)
Already up-to-date.
Updating TextLCD @ 308d188a2d3a:    [Checking]
Mercurial Distributed SCM (version 3.8.4)
(see https://mercurial-scm.org for more information)

Copyright (C) 2005-2016 Matt Mackall and others
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
pulling from https://developer.mbed.org/users/simon/code/TextLCD/
searching for changes
no changes found

> pio lib -g update Json 4

Library Storage: /storage/dir/...
Updating Json @ 5.6.4:  [Up-to-date]
Updating IRremote @ 2.2.1:  [Up-to-date]
```

--------------------------------

### Configure ATmega6450P Board in PlatformIO

Source: https://docs.platformio.org/en/stable/boards/atmelavr/ATmega6450P

Basic configuration for the ATmega6450P board in PlatformIO's platformio.ini file. Sets the platform to atmelavr and specifies the board type. This is the minimum required setup to start developing for this microcontroller.

```ini
[env:ATmega6450P]
platform = atmelavr
board = ATmega6450P
```

--------------------------------

### Configure PlatformIO Project - SODAQ ExpLoRer

Source: https://docs.platformio.org/en/latest/boards/atmelsam/sodaq_explorer

This snippet demonstrates setting up a PlatformIO project for the SODAQ ExpLoRer board. It shows how to specify the platform and board in the `platformio.ini` file.

```ini
[env:sodaq_explorer]
platform = atmelsam
board = sodaq_explorer

```

--------------------------------

### PlatformIO Configuration Examples for STC8F2K16S4

Source: https://docs.platformio.org/en/latest/boards/intel_mcs51/STC8F2K16S4

Provides example configurations for setting up the STC8F2K16S4 board in PlatformIO's platformio.ini file. Requires the intel_mcs51 platform. Inputs include board-specific overrides like MCU frequency, outputs are build environment settings. Does not support debugging and is limited to PlatformIO's framework.

```ini
[env:STC8F2K16S4]
platform = intel_mcs51
board = STC8F2K16S4

```

```ini
[env:STC8F2K16S4]
platform = intel_mcs51
board = STC8F2K16S4

; change microcontroller
board_build.mcu = stc8f2k16s4

; change MCU frequency
board_build.f_cpu = 11059200L

```

--------------------------------

### Start PlatformIO Home in Shell

Source: https://docs.platformio.org/en/latest/integration/ide/clion

This shell command launches PlatformIO Home from CLion's terminal, opening the web interface for managing PlatformIO features. It requires PlatformIO to be installed and configured for CLion. Note that some features, such as opening projects, are not supported in this manual setup.

```shell
pio -c clion home

```

--------------------------------

### Basic ESPino Board Configuration

Source: https://docs.platformio.org/en/latest/boards/espressif8266/espino

Minimal platformio.ini configuration for ESPino board setup using ESP8266 platform. This configuration uses default settings and serves as the starting point for ESPino projects. Requires the espressif8266 platform package.

```ini
[env:espino]
platform = espressif8266
board = espino
```

--------------------------------

### Get OTA Uploader Help

Source: https://docs.platformio.org/en/latest/platforms/espressif8266

This command executes the `espota.py` script with the `--help` flag to display all available options and their descriptions. This is useful for understanding the full capabilities of the OTA uploader, including destination, authentication, image handling, and output options.

```bash
~/.platformio/packages/framework-arduinoespressif8266/tools/espota.py --help

```

--------------------------------

### PlatformIO Configuration Examples for MultiTech mDot F411

Source: https://docs.platformio.org/en/stable/boards/ststm32/mts_mdot_f411re

Complete set of PlatformIO configuration examples for MultiTech mDot F411 board. Shows basic setup with STM32 platform, board-specific configurations, microcontroller customization, CPU frequency settings, and upload protocol selection. Supports multiple upload protocols including blackmagic, cmsis-dap, jlink, mbed, and stlink.

```ini
[env:mts_mdot_f411re]
platform = ststm32
board = mts_mdot_f411re
```

```ini
[env:mts_mdot_f411re]
platform = ststm32
board = mts_mdot_f411re

; change microcontroller
board_build.mcu = stm32f411ret6

; change MCU frequency
board_build.f_cpu = 100000000L
```

```ini
[env:mts_mdot_f411re]
platform = ststm32
board = mts_mdot_f411re

upload_protocol = mbed
```

--------------------------------

### PlatformIO Board Configuration Examples

Source: https://docs.platformio.org/en/latest/boards/ststm32/olimex_f103

PlatformIO configuration snippets for Olimex STM32-H103 board showing basic setup, build customization, and upload protocol options. Covers common scenarios for STM32F103RBT6 microcontroller development including frequency and MCU overrides.

```ini
[env:olimex_f103]
platform = ststm32
board = olimex_f103
```

```ini
[env:olimex_f103]
platform = ststm32
board = olimex_f103

; change microcontroller
board_build.mcu = stm32f103rbt6

; change MCU frequency
board_build.f_cpu = 72000000L
```

```ini
[env:olimex_f103]
platform = ststm32
board = olimex_f103

upload_protocol = stlink
```

--------------------------------

### Initialize PlatformIO Project with Multiple Boards

Source: https://docs.platformio.org/en/latest/core/quickstart

Command to initialize a new PlatformIO project for multiple embedded boards. Creates project structure including platformio.ini, src, and lib directories. Requires confirmation to proceed with creation.

```bash
> pio project init --board uno --board nodemcuv2 --board teensy31
```

--------------------------------

### PlatformIO Configuration for STM32F446RE

Source: https://docs.platformio.org/en/latest/boards/ststm32/genericSTM32F446RE

PlatformIO project configuration examples for STM32F446RE microcontroller board. Includes basic setup, advanced build options with custom microcontroller and frequency settings, and upload protocol configuration. All configurations use the genericSTM32F446RE board ID.

```ini
[env:genericSTM32F446RE]
platform = ststm32
board = genericSTM32F446RE
```

```ini
[env:genericSTM32F446RE]
platform = ststm32
board = genericSTM32F446RE

; change microcontroller
board_build.mcu = stm32f446ret6

; change MCU frequency
board_build.f_cpu = 180000000L
```

```ini
[env:genericSTM32F446RE]
platform = ststm32
board = genericSTM32F446RE

upload_protocol = serial
```

--------------------------------

### Basic Configuration in platformio.ini

Source: https://docs.platformio.org/en/latest/boards/espressif32/m5stamp-pico

This configuration snippet sets up a basic environment for the M5Stamp-Pico board in the platformio.ini file. It specifies the Espressif32 platform and the board ID, with no additional dependencies required. Input is the board ID; output is a configured build environment. Limited to basic setup without custom overrides.

```ini
[env:m5stamp-pico]
platform = espressif32
board = m5stamp-pico

```

--------------------------------

### Install PlatformIO Core with curl (macOS/Linux)

Source: https://docs.platformio.org/en/stable/core/installation/methods/installer-script

Installs or upgrades PlatformIO Core using the `curl` command to download the installer script and then executes it with `python3`. This method is suitable for macOS and Linux systems.

```shell
curl -fsSL -o get-platformio.py https://raw.githubusercontent.com/platformio/platformio-core-installer/master/get-platformio.py
python3 get-platformio.py
```

--------------------------------

### Basic WifInfo Board Setup in platformio.ini

Source: https://docs.platformio.org/en/latest/boards/espressif8266/wifinfo

This configuration defines a build environment for the WifInfo board using the espressif8266 platform. It requires PlatformIO Core and specifies the board ID 'wifinfo' for automatic hardware detection. No inputs or outputs beyond standard PlatformIO build process; suitable for initial project setup.

```ini
[env:wifinfo]
platform = espressif8266
board = wifinfo

```

--------------------------------

### Example PlatformIO Configuration for Ruuvi Tag

Source: https://docs.platformio.org/en/latest/boards/nordicnrf52/ruuvitag

Shows how to set up a PlatformIO environment for the Ruuvi Tag, specifying the platform, board and how to change microcontroller from default. This is useful when you want to customize the build process.

```ini
[env:ruuvitag]
platform = nordicnrf52
board = ruuvitag
```

--------------------------------

### Configure Adafruit Metro Board in PlatformIO

Source: https://docs.platformio.org/en/latest/boards/atmelavr/metro

These INI snippets demonstrate how to select the Adafruit Metro board and Atmel AVR platform in a PlatformIO project. The first example shows the minimal configuration required, while the second example illustrates overriding the default MCU and clock frequency using board_build options. No additional dependencies are needed, but users must ensure the appropriate debug tools are installed if debugging is required.

```INI
[env:metro]
platform = atmelavr
board = metro

```

```INI
[env:metro]
platform = atmelavr
board = metro

; change microcontroller
board_build.m = atmega328p

; change MCU frequency
board_build.f_cpu = 16000000L

```

--------------------------------

### PlatformIO Library Structure Example

Source: https://docs.platformio.org/en/latest/librarymanager/creating

Illustrates the recommended directory structure for a PlatformIO library, including source and header files.

```text
├── examples
│   └── echo
├── include
│   └── HelloWorld.h
├── library.json
└── src
    └── HelloWorld.cpp
```

--------------------------------

### Configure oddWires IOT-Bus JTAG Debug Tool

Source: https://docs.platformio.org/en/latest/plus/debug-tools/iot-bus-jtag

PlatformIO configuration examples showing how to enable the oddWires IOT-Bus JTAG debugging tool for ESP32 projects. Includes basic debug_tool setup and combined debug/upload protocol configuration for firmware debugging and flashing operations.

```ini
[env:myenv]
platform = ...
board = ...
debug_tool = iot-bus-jtag
```

```ini
[env:myenv]
platform = ...
board = ...
debug_tool = iot-bus-jtag
upload_protocol = iot-bus-jtag
```

--------------------------------

### Configure Arduino BT ATmega168 Board Settings

Source: https://docs.platformio.org/en/latest/boards/atmelavr/btatmega168

PlatformIO configuration for the Arduino BT ATmega168 board. This configuration sets up the development environment with the correct platform and board settings. The example shows basic setup and how to override default microcontroller and frequency settings.

```ini
[env:btatmega168]
platform = atmelavr
board = btatmega168
```

```ini
[env:btatmega168]
platform = atmelavr
board = btatmega168

; change microcontroller
board_build.mcu = atmega168

; change MCU frequency
board_build.f_cpu = 16000000L
```

--------------------------------

### Define library examples in JSON

Source: https://docs.platformio.org/en/latest/manifests/library-json/fields/examples

Configuration of example patterns in PlatformIO library manifest. This field defines example projects that demonstrate library usage. Each example includes a name, base directory, and list of files. The examples field supports glob patterns for flexible file matching.

```json
{
    "examples": [
        {
            "name": "Hello",
            "base": "examples/world",
            "files": [
                "platformio.ini",
                "include/world.h",
                "src/world.c",
                "README",
                "extra.py"
            ]
        },
        {
            "name": "Blink",
            "base": "examples/blink",
            "files": ["blink.cpp", "blink.h"]
        }
    ]
}
```

--------------------------------

### Write Arduino Unit Tests using Unity Framework (C++)

Source: https://docs.platformio.org/en/stable/tutorials/espressif32/arduino_debugging_unit_testing

The following C++ example demonstrates how to create unit tests for Arduino code with the Unity testing framework. It defines setUp and tearDown functions, several test cases for the String class, and a standard Arduino setup/loop that runs the tests. Place this file as test_main.cpp in a "test" folder and execute via PlatformIO's test commands.

```cpp
#include <Arduino.h>\n#include <unity.h>\n\nString STR_TO_TEST;\n\nvoid setUp(void) {\n    // set stuff up here\n    STR_TO_TEST = "Hello, world!";\n}\n\nvoid tearDown(void) {\n    // clean stuff up here\n    STR_TO_TEST = "";\n}\n\nvoid test_string_concat(void) {\n    String hello = "Hello, ";\n    String world = "world!";\n    TEST_ASSERT_EQUAL_STRING(STR_TO_TEST.c_str(), (hello + world).c_str());\n}\n\nvoid test_string_substring(void) {\n    TEST_ASSERT_EQUAL_STRING("Hello", STR_TO_TEST.substring(0, 5).c_str());\n}\n\nvoid test_string_index_of(void) {\n    TEST_ASSERT_EQUAL(7, STR_TO_TEST.indexOf('w'));\n}\n\nvoid test_string_equal_ignore_case(void) {\n    TEST_ASSERT(STR_TO_TEST.equalsIgnoreCase("HELLO, WORLD!"));\n}\n\nvoid test_string_to_upper_case(void) {\n    STR_TO_TEST.toUpperCase();\n    TEST_ASSERT_EQUAL_STRING("HELLO, WORLD!", STR_TO_TEST.c_str());\n}\n\nvoid test_string_replace(void) {\n    STR_TO_TEST.replace('!', '?');\n    TEST_ASSERT_EQUAL_STRING("Hello, world?", STR_TO_TEST.c_str());\n}\n\nvoid setup()\n{\n    delay(2000); // service delay\n    UNITY_BEGIN();\n\n    RUN_TEST(test_string_concat);\n    RUN_TEST(test_string_substring);\n    RUN_TEST(test_string_index_of);\n    RUN_TEST(test_string_equal_ignore_case);\n    RUN_TEST(test_string_to_upper_case);\n    RUN_TEST(test_string_replace);\n\n    UNITY_END(); // stop unit testing\n}\n\nvoid loop()\n{\n}\n
```

--------------------------------

### Configure PATH for PlatformIO CLI (Unix/Linux)

Source: https://docs.platformio.org/en/stable/core/installation/shell-commands

Adds the PlatformIO binary directory to the user's PATH environment variable to allow invoking `platformio` and related commands from any terminal. Works for Bash and Zsh shells by editing the appropriate profile files. No additional dependencies.

```Shell
export PATH=$PATH:$HOME/.local/bin

# For Zsh compatibility
emulate sh -c '. ~/.profile'
```

--------------------------------

### PlatformIO Configuration for u-blox NINA-W10 Series

Source: https://docs.platformio.org/en/stable/boards/espressif32/nina_w10

This snippet shows the basic configuration for the u-blox NINA-W10 series board in the platformio.ini file. It specifies the platform as 'espressif32' and the board as 'nina_w10'. This is the fundamental setup required to start a project targeting this board.

```ini
[env:nina_w10]
platform = espressif32
board = nina_w10


```

--------------------------------

### Basic FK407M1 Configuration in PlatformIO

Source: https://docs.platformio.org/en/latest/boards/ststm32/fk407m1

Sets up the basic PlatformIO environment for the FK407M1 board. Uses the ststm32 platform and fk407m1 board ID. Dependencies include PlatformIO installation. No inputs required; outputs a configured project environment. Limitations: Specific to FK407M1 board only.

```ini
[env:fk407m1]
platform = ststm32
board = fk407m1

```

--------------------------------

### PlatformIO Configuration for NUCLEO-8S207K8 Board

Source: https://docs.platformio.org/en/latest/boards/ststm8/nucleo_8s207k8

PlatformIO project configuration examples for NUCLEO-8S207K8 development board. Includes basic board setup, custom microcontroller and frequency settings, upload protocol configuration. Uses STM8S207K8T6 microcontroller with ststm8 platform. Supports ST-LINK debugging and multiple upload protocols.

```ini
[env:nucleo_8s207k8]
platform = ststm8
board = nucleo_8s207k8


```

```ini
[env:nucleo_8s207k8]
platform = ststm8
board = nucleo_8s207k8

; change microcontroller
board_build.mcu = stm8s207k8t6

; change MCU frequency
board_build.f_cpu = 16000000L


```

```ini
[env:nucleo_8s207k8]
platform = ststm8
board = nucleo_8s207k8

upload_protocol = stlinkv21


```

--------------------------------

### Install PlatformIO Core Locally (macOS/Linux/Windows)

Source: https://docs.platformio.org/en/stable/core/installation/methods/installer-script

Installs or upgrades PlatformIO Core by first downloading the `get-platformio.py` script and then executing it using the Python interpreter. This method is cross-platform and works on macOS, Linux, and Windows.

```shell
# change directory to the folder where is located downloaded "get-platformio.py"
cd /path-to-dir/where/get-platformio.py/is-located

# run it
python get-platformio.py
```

```shell
# On _Windows OS_ it may look like this:
# change directory to the folder where is located downloaded "get-platformio.py"
cd C:/path-to-dir/where/get-platformio.py/is-located

# run it
python.exe get-platformio.py
```

--------------------------------

### platformio.ini Example

Source: https://docs.platformio.org/en/latest/projectconf

A sample platformio.ini file demonstrating common configurations for different environments, including libraries, build flags, and debugging options. It showcases the section-based structure and interpolation of values.

```ini
[platformio]
default_envs = nodemcuv2

; custom common options
[common]
build_flags =
    -D VERSION=1.2.3
    -D DEBUG=1
lib_deps_builtin =
    SPI
    Wire
lib_deps_external =
    bblanchon/ArduinoJson @ ~5.6,!=5.4
    https://github.com/gioblu/PJON.git#v2.0
    IRremoteESP8266=https://github.com/markszabo/IRremoteESP8266/archive/master.zip

[env:nodemcuv2]
platform = espressif8266
framework = arduino
board = nodemcuv2

; Build options
build_flags =
    ${common.build_flags}
    -DSSID_NAME=HELLO
    -DSSID_PASWORD=WORLD

; Library options
lib_deps =
    ${common.lib_deps_builtin}
    ${common.lib_deps_external}
    https://github.com/me-no-dev/ESPAsyncTCP.git
    knolleary/PubSubClient@^2.8
    paulstoffregen/OneWire

; Serial Monitor options
monitor_speed = 115200
monitor_flags =
    --encoding
    hexlify

; Unit Testing options
test_ignore = test_desktop

[env:bluepill_f103c8]
platform = ststm32
framework = arduino
board = bluepill_f103c8

; Library options
lib_deps = ${common.lib_deps_external}

; Debug options
debug_tool = custom
debug_server =
    ${platformio.packages_dir}/tool-jlink/JLinkGDBServer
    -singlerun
    -if
    SWD
    -select
    USB
    -port
    2331
    -device
    STM32F103C8

; Unit Testing options
test_ignore = test_desktop
```

--------------------------------

### PlatformIO Library Manifest (library.json) Example

Source: https://docs.platformio.org/en/latest/librarymanager/creating

Shows a sample library.json file with various fields like name, version, description, repository, authors, license, dependencies, frameworks, and platforms.

```json
{
  "name": "HelloWorld",
  "version": "1.0.0",
  "description": "A \"Hello world\" program is a computer program that outputs \"Hello World\" (or some variant) on a display device",
  "keywords": "planet, happiness, people",
  "repository":
  {
    "type": "git",
    "url": "https://github.com/username/hello-world.git"
  },
  "authors":
  [
    {
      "name": "John Smith",
      "email": "me@john-smith.com",
      "url": "https://www.john-smith/contact"
    },
    {
      "name": "Andrew Smith",
      "email": "me@andrew-smith.com",
      "url": "https://www.andrew-smith/contact",
      "maintainer": true
    }
  ],
  "license": "MIT",
  "homepage": "https://www.helloworld.org/",
  "dependencies": {
    "ownername/print": "~1.3.0"
  },
  "frameworks": "*",
  "platforms": "*"
}
```

--------------------------------

### Initialize PlatformIO project for Visual Studio using CLI

Source: https://docs.platformio.org/en/latest/integration/ide/visualstudio

Creates a new PlatformIO project configured for Visual Studio. Requires PlatformIO Core (CLI) installed. Use the board ID to target a specific hardware platform. The generated project includes a platformio.ini file and source directory.

```Shell
pio project init --ide visualstudio --board <ID>

# Example: generate project for Arduino UNO
pio project init --ide visualstudio --board uno
```

--------------------------------

### PlatformIO Configuration for ATmega3290/A

Source: https://docs.platformio.org/en/latest/boards/atmelavr/ATmega3290

Basic and advanced configuration examples for setting up the ATmega3290 board in the platformio.ini file using the Atmel AVR platform. The first example provides default setup, while the second demonstrates overriding MCU type and frequency. Inputs are project-specific; outputs enable building and uploading to the board. Limitations include no debugging support.

```ini
[env:ATmega3290]
platform = atmelavr
board = ATmega3290

```

```ini
[env:ATmega3290]
platform = atmelavr
board = ATmega3290

; change microcontroller
board_build.mcu = atmega3290

; change MCU frequency
board_build.f_cpu = 16000000L

```

--------------------------------

### Configure QEMU for PlatformIO Testing

Source: https://docs.platformio.org/en/latest/advanced/unit-testing/simulators/qemu

Sets up QEMU emulator integration in PlatformIO by configuring platform packages and test commands in platformio.ini. This configuration example targets the HiFive1 board from SiFive using the Freedom-E SDK framework. The setup enables hardware virtualization for embedded testing without requiring physical hardware.

```ini
[env:hifive1]
platform = sifive
framework = freedom-e-sdk
board = hifive1

platform_packages =
    platformio/tool-qemu-riscv
test_testing_command =
    ${platformio.packages_dir}/tool-qemu-riscv/bin/qemu-system-riscv32
    -nographic
    -machine
    sifive_e
    -kernel
    ${platformio.build_dir}/${this.__env__}/firmware.elf
```

--------------------------------

### AppVeyor Configuration for PlatformIO Projects

Source: https://docs.platformio.org/en/latest/integration/ci/appveyor

Basic AppVeyor configuration for native PlatformIO projects using the `pio run` command. Sets up Python environment and installs PlatformIO before running tests.

```YAML
build: off
environment:

install:
    - cmd: git submodule update --init --recursive
    - cmd: SET PATH=%PATH%;C:\Python27\Scripts
    - cmd: pip install -U platformio

test_script:
    - cmd: pio run -e <ID_1> -e <ID_2> -e <ID_N>
```

--------------------------------

### PlatformIO Configuration - Ethernet IoT Starter Kit

Source: https://docs.platformio.org/en/stable/boards/freescalekinetis/IBMEthernetKit

Example platformio.ini configuration for the Ethernet IoT Starter Kit, demonstrating board selection and environment settings. It also shows how to override default settings using the board_*** option.

```ini
[env:IBMEthernetKit]
platform = freescalekinetis
board = IBMEthernetKit

```

```ini
[env:IBMEthernetKit]
platform = freescalekinetis
board = IBMEthernetKit

; change microcontroller
board_build.mcu = mk64fn1m0vll12

; change MCU frequency
board_build.f_cpu = 120000000L

```

--------------------------------

### PlatformIO Configuration Examples for Adafruit PyGamer M4

Source: https://docs.platformio.org/en/stable/boards/atmelsam/adafruit_pygamer_m4

Collection of PlatformIO configuration examples for Adafruit PyGamer M4 Express board, showing basic setup, build customization, and upload protocol configuration. All examples use the platformio.ini format and target the atmelsam platform.

```ini
[env:adafruit_pygamer_m4]
platform = atmelsam
board = adafruit_pygamer_m4
```

```ini
[env:adafruit_pygamer_m4]
platform = atmelsam
board = adafruit_pygamer_m4

; change microcontroller
board_build.mcu = samd51j19a

; change MCU frequency
board_build.f_cpu = 120000000L
```

```ini
[env:adafruit_pygamer_m4]
platform = atmelsam
board = adafruit_pygamer_m4

upload_protocol = sam-ba
```

--------------------------------

### PlatformIO Configuration (96Boards Nitrogen)

Source: https://docs.platformio.org/en/latest/boards/nordicnrf52/96b_nitrogen

Demonstrates setting up a PlatformIO project for the 96Boards Nitrogen board.  It specifies the platform, board, microcontroller, frequency, and upload protocol within the `platformio.ini` file.

```ini
[env:96b_nitrogen]
platform = nordicnrf52
board = 96b_nitrogen

; change microcontroller
board_build.mcu = nrf52832

; change MCU frequency
board_build.f_cpu = 64000000L

; change upload protocol
upload_protocol = jlink
```

--------------------------------

### Basic PlatformIO Configuration for VAkE v1.0

Source: https://docs.platformio.org/en/stable/boards/ststm32/vake_v1

Sets up the basic build environment for the VAkE v1.0 board in PlatformIO. Requires PlatformIO IDE installed. No inputs required; outputs a configured project environment. Limited to STM32 platform and vake_v1 board ID.

```ini
[env:vake_v1]
platform = ststm32
board = vake_v1

```

--------------------------------

### Configure Nexys A7 Board in PlatformIO INI

Source: https://docs.platformio.org/en/latest/boards/openhw/nexys_a7

Provides INI configuration examples for setting up the Digilent Nexys A7 board in PlatformIO projects. The first example shows basic environment setup with platform and board IDs. The second includes overrides for microcontroller and frequency settings. Requires PlatformIO Core installed, uses standard INI syntax, outputs build configurations for the OpenHW platform. Limitations include board-specific hardware constraints and dependency on debug tool drivers for advanced debugging.

```ini
[env:nexys_a7]
platform = openhw
board = nexys_a7
```

```ini
[env:nexys_a7]
platform = openhw
board = nexys_a7

; change microcontroller
board_build.mcu =

; change MCU frequency
board_build.f_cpu = 320000000L
```

--------------------------------

### GoogleTest Test Code Example (Arduino)

Source: https://docs.platformio.org/en/latest/advanced/unit-testing/frameworks/googletest

A basic GoogleTest test code example for Arduino environments, including initialization and test execution within the setup and loop functions.

```cpp
#include <gtest/gtest.h>
// uncomment line below if you plan to use GMock
// #include <gmock/gmock.h>

// TEST(...) 
// TEST_F(...) 

#if defined(ARDUINO)
#include <Arduino.h>

void setup() {
    // should be the same value as for the `test_speed` option in "platformio.ini"
    // default value is test_speed=115200
    Serial.begin(115200);

    ::testing::InitGoogleTest();
    // if you plan to use GMock, replace the line above with
    // ::testing::InitGoogleMock();
}

void loop() {
  // Run tests
  if (RUN_ALL_TESTS()) ;

  // sleep for 1 sec
  delay(1000);
}

#else
int main(int argc, char **argv) {
    ::testing::InitGoogleTest(&argc, argv);
    // if you plan to use GMock, replace the line above with
    // ::testing::InitGoogleMock(&argc, argv);

    if (RUN_ALL_TESTS()) ;

    // Always return zero-code and allow PlatformIO to parse results
    return 0;
}
#endif
```

--------------------------------

### Unity Test File Setup (C)

Source: https://docs.platformio.org/en/latest/tutorials/ststm32/stm32cube_debugging_unit_testing

This C file demonstrates the basic structure for a Unity test file, including the necessary includes and the standard setUp function. The setUp function is used here to enable the clock for the LED GPIO and initialize its pin as an output.

```c
#include "../src/main.h"
#include <unity.h>

void setUp(void)
{
  LED_GPIO_CLK_ENABLE();
  GPIO_InitTypeDef GPIO_InitStruct;
  GPIO_InitStruct.Pin = LED_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLUP;

```

--------------------------------

### Configure IAP15F206A Board in PlatformIO

Source: https://docs.platformio.org/en/latest/boards/intel_mcs51/IAP15F206A

Set up the PlatformIO environment for the IAP15F206A board using the platformio.ini configuration file. This example provides the basic configuration to specify the platform and board. It supports overriding default settings with board-specific options. No external dependencies are required, but a PlatformIO installation is assumed. Inputs are board manifest parameters, outputs are customized build environments. Limitations include no debugging support for this board.

```ini
[env:IAP15F206A]
platform = intel_mcs51
board = IAP15F206A


```

```ini
[env:IAP15F206A]
platform = intel_mcs51
board = IAP15F206A

; change microcontroller
board_build.mcu = iap15f206a

; change MCU frequency
board_build.f_cpu = 11059200L


```

--------------------------------

### ESP32 Upload Protocol Configuration - PlatformIO INI

Source: https://docs.platformio.org/en/latest/boards/espressif32/m5stack-grey

PlatformIO configuration demonstrating how to set upload protocol for M5Stack GREY ESP32. Shows both the available protocols (espota and esptool) and how to explicitly select esptool as the upload method. Essential for proper firmware deployment.

```ini
[env:m5stack-grey]
platform = espressif32
board = m5stack-grey

upload_protocol = esptool
```