Deprecate platformIO support (#957)

* Deprecate platformIO support

* Update README.md

Co-authored-by: Pablo Garrido <pablogs9@gmail.com>

Co-authored-by: Pablo Garrido <pablogs9@gmail.com>

Author: Acuadros95

README.md

@@ -19,7 +19,6 @@ As the build process for ROS 2 and micro-ROS is based on custom meta-build syste
   - [How to use the precompiled library](#how-to-use-the-precompiled-library)
     - [Arduino IDE](#arduino-ide)
     - [PlatformIO](#platformio)
-      - [Known issues](#known-issues)
   - [How to build the precompiled library](#how-to-build-the-precompiled-library)
   - [Patch Arduino board for support precompiled libraries](#patch-arduino-board-for-support-precompiled-libraries)
     - [Patch Teensyduino](#patch-teensyduino)
@@ -73,92 +72,7 @@ docker run -it --rm -v /dev:/dev --privileged --net=host microros/micro-ros-agen
 ```
 ### PlatformIO
 
-For boards supported by micro-ROS, all you have to do to add the library to your project is including the following lines in the existing `platformio.ini` file:
-
-```ini
-[env:<YOUR_BOARD>]
-
-...
-lib_deps =
-    https://github.com/micro-ROS/micro_ros_arduino
-
-build_flags =
-    -L ./.pio/libdeps/<YOUR_BOARD>/micro_ros_arduino/src/<BOARD_ARCHITECTURE>/
-    -l microros
-    -D <TARGET_DEFINITION>
-```
-
-| Board                       | <YOUR_BOARD>        | <BOARD_ARCHITECTURE>         | <TARGET_DEFINITION>                 |
-| ----------------------------| ------------------- | ---------------------------- | ----------------------------------- |
-| Arduino Portenta H7 M7 Core | portenta_h7_m7      | cortex-m7/fpv5-d16-softfp    | TARGET_PORTENTA_H7_M7               |
-| Arduino Nano RP2040 Connect | nanorp2040connect   | cortex-m0plus                | ARDUINO_NANO_RP2040_CONNECT         |
-| Teensy 4.1/4.0              | teensy41 / teensy40 | imxrt1062/fpv5-d16-hard      | ARDUINO_TEENSY41                    |
-| Teensy 3.6                  | teensy36            | mk66fx1m0/fpv4-sp-d16-hard   | ARDUINO_TEENSY36                    |
-| Teensy 3.5                  | teensy35            | mk64fx512/fpv4-sp-d16-hard   | ARDUINO_TEENSY35                    |
-| Teensy 3.2  / 3.1           | teensy31            | mk20dx256                    | ARDUINO_TEENSY32 / ARDUINO_TEENSY31 |
-| ESP32 Dev Module            | esp32dev            | esp32                        | ESP32                               |
-| STM32-E407                  | olimex_e407         | cortex-m4                    | TARGET_STM32F4                      |
-| Arduino Due                 | due                 | cortex-m3                    | -                                   |
-| Arduino Zero                | zero                | cortex-m0plus                | -                                   |
-
-Now to proceed with the PlatformIO workflow:
-
-```bash
-pio lib install # Install dependencies
-pio run # Build the firmware
-pio run --target upload # Flash the firmware
-```
-
-An example of a micro-ROS application using PlatformIO is available [here](https://github.com/husarion/micro_ros_stm32_template).
-
-#### Known issues
-
-- Arduino Nano RP2040 Connect
-
-  - The following versioning shall be used:
-    ```
-    lib_deps =
-      arduino-libraries/WiFiNINA@^1.8.13
-      ...
-
-    platform_packages =
-      toolchain-gccarmnoneeabi @ ~1.70201.0
-      framework-arduino-mbed @ ~2.4.1
-    ```
-
-  - Library dependency finder shall be set to `chain+`: `lib_ldf_mode = chain+`
-
-    Related: https://github.com/micro-ROS/micro_ros_arduino/issues/780
-
-- Arduino Due
-  - The following versioning shall be used:
-    ```
-    platform_packages =
-      toolchain-gccarmnoneeabi@<1.50000.0
-    ```
-
-    Related: https://github.com/micro-ROS/micro_ros_arduino/issues/698
-
-- ESP32 Dev Module
-  - Known issues with espressif32 arduino package, use `2.0.2` version:
-    ```
-    [env:esp32dev]
-    platform = https://github.com/platformio/platform-espressif32.git#feature/arduino-upstream
-    board = esp32dev
-    framework = arduino
-    lib_deps =
-        https://github.com/micro-ROS/micro_ros_arduino.git
-    build_flags =
-        -L ./.pio/libdeps/esp32dev/micro_ros_arduino/src/esp32/
-        -l microros
-        -D ESP32
-
-    platform_packages =
-      toolchain-xtensa32 @ ~2.80400.0
-      framework-arduinoespressif32@https://github.com/espressif/arduino-esp32.git#2.0.2
-    ```
-
-    Related: https://github.com/micro-ROS/micro_ros_arduino/issues/736, https://github.com/platformio/platform-espressif32/issues/616
+PlatformIO support for this repository has been deprecated in favor of its own build system: [micro_ros_platformio](https://github.com/micro-ROS/micro_ros_platformio)
 
 ## How to build the precompiled library