---
---
## Table of Contents
* [Why do we need this functional-vlpp library](#why-do-we-need-this-functional-vlpp-library)
* [Features](#features)
* [Currently supported Boards](#currently-supported-boards)
* [Changelog](changelog.md)
* [Prerequisites](#prerequisites)
* [Installation](#installation)
* [Use Arduino Library Manager](#use-arduino-library-manager)
* [Manual Install](#manual-install)
* [VS Code & PlatformIO](#vs-code--platformio)
* [Packages' Patches](#packages-patches)
* [1. For Adafruit nRF52840 and nRF52832 boards](#1-for-adafruit-nRF52840-and-nRF52832-boards)
* [2. For Teensy boards](#2-for-teensy-boards)
* [3. For Arduino SAM DUE boards](#3-for-arduino-sam-due-boards)
* [4. For Arduino SAMD boards](#4-for-arduino-samd-boards)
* [For core version v1.8.10+](#for-core-version-v1810)
* [For core version v1.8.9-](#for-core-version-v189-)
* [5. For Adafruit SAMD boards](#5-for-adafruit-samd-boards)
* [6. For Seeeduino SAMD boards](#6-for-seeeduino-samd-boards)
* [7. For STM32 boards](#7-for-stm32-boards)
* [7.1. For STM32 boards to use LAN8720](#71-for-stm32-boards-to-use-lan8720)
* [7.2. For STM32 boards to use Serial1](#72-for-stm32-boards-to-use-serial1)
* [8. For RP2040-based boards using Earle Philhower arduino-pico core](#8-for-rp2040-based-boards-using-earle-philhower-arduino-pico-core)
* [8.1. To use BOARD_NAME](#81-to-use-board_name)
* [8.2. To avoid compile error relating to microsecondsToClockCycles](#82-to-avoid-compile-error-relating-to-microsecondstoclockcycles)
* [9. For Portenta_H7 boards using Arduino IDE in Linux](#9-for-portenta_h7-boards-using-arduino-ide-in-linux)
* [10. For RTL8720DN boards using AmebaD core](#10-for-rtl8720dn-boards-using-amebad-core)
* [11. For SAMD21 and SAMD51 boards using ArduinoCore-fab-sam core](#11-For-SAMD21-and-SAMD51-boards-using-ArduinoCore-fab-sam-core)
* [12. For Seeeduino RP2040 boards](#12-For-Seeeduino-RP2040-boards)
* [13. For Seeeduino nRF52840 boards](#13-For-Seeeduino-nRF52840-boards)
* [How to use](#how-to-use)
* [Libraries using this Functional-Vlpp library](#libraries-using-this-functional-vlpp-library)
* [How to use in your sketch](#how-to-use-in-your-sketch)
* [Releases](#releases)
* [Issues](#issues)
* [Contributions and Thanks](#contributions-and-thanks)
* [Contributing](#contributing)
* [License](#license)
* [Copyright](#copyright)
---
---
### Why do we need this [functional-vlpp library](https://github.com/khoih-prog/functional-vlpp)
#### Features
The original [**vczh-libraries/Vlpp**](https://github.com/vczh-libraries/Vlpp) provides common C++ construction, including string operation / generic container / linq, function templates to better support **C++ functional programming across platforms**.
The `functional portion` of the project was then forked and modified to be used for Arduino by [**Marcus Rugger's functional-vlpp library**](https://github.com/marcusrugger/functional-vlpp).
This [**Functional-Vlpp library**](https://github.com/khoih-prog/Functional-Vlpp) is based on, modified to use and tested working **OK** in other architectures such as **Teensy, SAM-DUE, SAMD, STM32, eps8266, esp32**.
#### Currently supported Boards
This [**Functional-Vlpp library**](https://github.com/khoih-prog/Functional-Vlpp) currently supports these following boards:
1. **nRF52 boards**, such as **AdaFruit Feather nRF52832, nRF52840 Express, BlueFruit Sense, Itsy-Bitsy nRF52840 Express, Metro nRF52840 Express, NINA_B302_ublox, NINA_B112_ublox, etc.**
2. **SAMD21**
- Arduino SAMD21: ZERO, MKRs, NANO_33_IOT, etc.
- Adafruit SAMD21 (M0): ItsyBitsy M0, Feather M0, Feather M0 Express, Metro M0 Express, Circuit Playground Express, Trinket M0, PIRkey, Hallowing M0, Crickit M0, etc.
- Seeeduino: LoRaWAN, Zero, Femto M0, XIAO M0, Wio GPS Board, etc.
3. **SAMD51**
- Adafruit SAMD51 (M4): Metro M4, Grand Central M4, ItsyBitsy M4, Feather M4 Express, Trellis M4, Metro M4 AirLift Lite, MONSTER M4SK Express, Hallowing M4, etc.
- Seeeduino: Wio Terminal, Grove UI Wireless
4. **SAM DUE**
5. **Teensy (4.1, 4.0, 3.6, 3.5, 3,2, 3.1, 3.0)**
6. **STM32F/L/H/G/WB/MP1 boards (with 32+K Flash)**
- Nucleo-144
- Nucleo-64
- Discovery
- Generic STM32F0, STM32F1, STM32F2, STM32F3, STM32F4, STM32F7 (with 64+K Flash): x8 and up
- STM32L0, STM32L1, STM32L4
- STM32G0, STM32G4
- STM32H7
- STM32WB
- STM32MP1
- LoRa boards
- 3-D printer boards
- Generic Flight Controllers
- Midatronics boards
7. **ESP32**
8. **ESP8266**
---
---
## Prerequisites
1. [`Arduino IDE 1.8.19+` for Arduino](https://www.arduino.cc/en/Main/Software)
2. [`Arduino AVR core 1.8.6+`](https://github.com/arduino/ArduinoCore-avr) for Arduino AVR boards. Use Arduino Board Manager to install. [](https://github.com/arduino/ArduinoCore-avr/releases/latest)
3. [`Arduino Core for STM32 v2.3.0+`](https://github.com/stm32duino/Arduino_Core_STM32) for STM32 boards. [](https://github.com/stm32duino/Arduino_Core_STM32/releases/latest)
4. [`Teensy core 1.57+`](https://www.pjrc.com/teensy/td_download.html) for Teensy (4.1, 4.0, 3.6, 3.5, 3,2, 3.1, 3.0, LC) boards
5. [`Arduino SAM DUE core 1.6.12+`](https://github.com/arduino/ArduinoCore-sam) for SAM DUE ARM Cortex-M3 boards
6. [`Arduino SAMD core 1.8.13+`](https://www.arduino.cc/en/Guide/ArduinoM0) for SAMD ARM Cortex-M0+ boards. [](https://github.com/arduino/ArduinoCore-samd/releases/latest)
7. [`Adafruit SAMD core 1.7.11+`](https://www.adafruit.com/) for SAMD ARM Cortex-M0+ and M4 boards (Nano 33 IoT, etc.). [](https://github.com/adafruit/ArduinoCore-samd/releases/latest)
8. [`Seeeduino SAMD core 1.8.3+`](https://github.com/Seeed-Studio/ArduinoCore-samd) for SAMD21/SAMD51 boards (XIAO M0, Wio Terminal, etc.). [](https://github.com/Seeed-Studio/ArduinoCore-samd/releases/latest/)
9. [`Adafruit nRF52 v1.3.0+`](https://www.adafruit.com) for nRF52 boards such as Adafruit NRF52840_FEATHER, NRF52832_FEATHER, NRF52840_FEATHER_SENSE, NRF52840_ITSYBITSY, NRF52840_CIRCUITPLAY, NRF52840_CLUE, NRF52840_METRO, NRF52840_PCA10056, PARTICLE_XENON, **NINA_B302_ublox, NINA_B112_ublox**, etc. [](https://github.com/adafruit/Adafruit_nRF52_Arduino/releases/latest)
---
## Installation
### Use Arduino Library Manager
The best and easiest way is to use `Arduino Library Manager`. Search for `Functional-Vlpp`, then select / install the latest version.
You can also use this link [](https://www.ardu-badge.com/Functional-Vlpp) for more detailed instructions.
### Manual Install
1. Navigate to [Functional-Vlpp](https://github.com/khoih-prog/Functional-Vlpp) page.
2. Download the latest release `Functional-Vlpp-master.zip`.
3. Extract the zip file to `Functional-Vlpp-master` directory
4. Copy whole
- `Functional-Vlpp-master` folder to Arduino libraries' directory such as `~/Arduino/libraries/`.
### VS Code & PlatformIO:
1. Install [VS Code](https://code.visualstudio.com/)
2. Install [PlatformIO](https://platformio.org/platformio-ide)
3. Install [**Functional-Vlpp** library](https://registry.platformio.org/libraries/khoih-prog/Functional-Vlpp) by using [Library Manager](https://registry.platformio.org/libraries/khoih-prog/Functional-Vlpp/installation). Search for **Functional-Vlpp** in [Platform.io Author's Libraries](https://platformio.org/lib/search?query=author:%22Khoi%20Hoang%22)
4. Use included [platformio.ini](platformio/platformio.ini) file from examples to ensure that all dependent libraries will installed automatically. Please visit documentation for the other options and examples at [Project Configuration File](https://docs.platformio.org/page/projectconf.html)
---
---
### Packages' Patches
#### 1. For Adafruit nRF52840 and nRF52832 boards
**To be able to compile, run and automatically detect and display BOARD_NAME on nRF52840/nRF52832 boards**, you have to copy the whole [nRF52 Packages_Patches](Packages_Patches/adafruit/hardware/nrf52/1.3.0) directory into Adafruit nRF52 directory (~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0).
Supposing the Adafruit nRF52 version is 1.3.0. These files must be copied into the directory:
- `~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/platform.txt`
- `~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/boards.txt`
- `~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/cores/nRF5/Udp.h`
- `~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/cores/nRF5/Print.h`
- `~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/cores/nRF5/Print.cpp`
- `~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/variants/NINA_B302_ublox/variant.h`
- `~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/variants/NINA_B302_ublox/variant.cpp`
- `~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/variants/NINA_B112_ublox/variant.h`
- `~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/variants/NINA_B112_ublox/variant.cpp`
- **`~/.arduino15/packages/adafruit/hardware/nrf52/1.3.0/cores/nRF5/Udp.h`**
Whenever a new version is installed, remember to copy these files into the new version directory. For example, new version is x.yy.z
These files must be copied into the directory:
- `~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/platform.txt`
- `~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/boards.txt`
- `~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/cores/nRF5/Udp.h`
- `~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/cores/nRF5/Print.h`
- `~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/cores/nRF5/Print.cpp`
- `~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/variants/NINA_B302_ublox/variant.h`
- `~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/variants/NINA_B302_ublox/variant.cpp`
- `~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/variants/NINA_B112_ublox/variant.h`
- `~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/variants/NINA_B112_ublox/variant.cpp`
- **`~/.arduino15/packages/adafruit/hardware/nrf52/x.yy.z/cores/nRF5/Udp.h`**
#### 2. For Teensy boards
**To be able to compile and run on Teensy boards**, you have to copy the files in [**Packages_Patches for Teensy directory**](Packages_Patches/hardware/teensy/avr) into Teensy hardware directory (./arduino-1.8.19/hardware/teensy/avr/boards.txt).
Supposing the Arduino version is 1.8.19. These files must be copied into the directory:
- `./arduino-1.8.19/hardware/teensy/avr/boards.txt`
- `./arduino-1.8.19/hardware/teensy/avr/cores/teensy/Stream.h`
- `./arduino-1.8.19/hardware/teensy/avr/cores/teensy3/Stream.h`
- `./arduino-1.8.19/hardware/teensy/avr/cores/teensy4/Stream.h`
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
These files must be copied into the directory:
- `./arduino-x.yy.zz/hardware/teensy/avr/boards.txt`
- `./arduino-x.yy.zz/hardware/teensy/avr/cores/teensy/Stream.h`
- `./arduino-x.yy.zz/hardware/teensy/avr/cores/teensy3/Stream.h`
- `./arduino-x.yy.zz/hardware/teensy/avr/cores/teensy4/Stream.h`
#### 3. For Arduino SAM DUE boards
**To be able to compile and run on SAM DUE boards**, you have to copy the whole [SAM DUE](Packages_Patches/arduino/hardware/sam/1.6.12) directory into Arduino sam directory (~/.arduino15/packages/arduino/hardware/sam/1.6.12).
Supposing the Arduino SAM core version is 1.6.12. This file must be copied into the directory:
- `~/.arduino15/packages/arduino/hardware/sam/1.6.12/platform.txt`
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
This file must be copied into the directory:
- `~/.arduino15/packages/arduino/hardware/sam/x.yy.zz/platform.txt`
#### 4. For Arduino SAMD boards
***To be able to compile, run and automatically detect and display BOARD_NAME on Arduino SAMD (Nano-33-IoT, etc) boards***, you have to copy the whole [Arduino SAMD Packages_Patches](Packages_Patches/arduino/hardware/samd/1.8.13) directory into Arduino SAMD directory (~/.arduino15/packages/arduino/hardware/samd/1.8.13).
#### For core version v1.8.10+
Supposing the Arduino SAMD version is 1.8.13. Now only one file must be copied into the directory:
- `~/.arduino15/packages/arduino/hardware/samd/1.8.13/platform.txt`
Whenever a new version is installed, remember to copy this files into the new version directory. For example, new version is x.yy.zz
This file must be copied into the directory:
- `~/.arduino15/packages/arduino/hardware/samd/x.yy.zz/platform.txt`
#### For core version v1.8.9-
Supposing the Arduino SAMD version is 1.8.9. These files must be copied into the directory:
- `~/.arduino15/packages/arduino/hardware/samd/1.8.9/platform.txt`
- ***`~/.arduino15/packages/arduino/hardware/samd/1.8.9/cores/arduino/Arduino.h`***
Whenever a new version is installed, remember to copy these files into the new version directory. For example, new version is x.yy.z
These files must be copied into the directory:
- `~/.arduino15/packages/arduino/hardware/samd/x.yy.z/platform.txt`
- ***`~/.arduino15/packages/arduino/hardware/samd/x.yy.z/cores/arduino/Arduino.h`***
This is mandatory to fix the ***notorious Arduino SAMD compiler error***. See [Improve Arduino compatibility with the STL (min and max macro)](https://github.com/arduino/ArduinoCore-samd/pull/399)
```
...\arm-none-eabi\include\c++\7.2.1\bits\stl_algobase.h:243:56: error: macro "min" passed 3 arguments, but takes just 2
min(const _Tp& __a, const _Tp& __b, _Compare __comp)
```
Whenever the above-mentioned compiler error issue is fixed with the new Arduino SAMD release, you don't need to copy the `Arduino.h` file anymore.
#### 5. For Adafruit SAMD boards
***To be able to compile, run and automatically detect and display BOARD_NAME on Adafruit SAMD (Itsy-Bitsy M4, etc) boards***, you have to copy the whole [Adafruit SAMD Packages_Patches](Packages_Patches/adafruit/hardware/samd/1.7.11) directory into Adafruit samd directory (~/.arduino15/packages/adafruit/hardware/samd/1.7.11).
Supposing the Adafruit SAMD core version is 1.7.11. These files must be copied into the directory:
- `~/.arduino15/packages/adafruit/hardware/samd/1.7.11/platform.txt`
- `~/.arduino15/packages/adafruit/hardware/samd/1.7.11/cores/arduino/Print.h`
- `~/.arduino15/packages/adafruit/hardware/samd/1.7.11/cores/arduino/Print.cpp`
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
These files must be copied into the directory:
- `~/.arduino15/packages/adafruit/hardware/samd/x.yy.zz/platform.txt`
- `~/.arduino15/packages/adafruit/hardware/samd/x.yy.zz/cores/arduino/Print.h`
- `~/.arduino15/packages/adafruit/hardware/samd/x.yy.zz/cores/arduino/Print.cpp`
#### 6. For Seeeduino SAMD boards
***To be able to compile, run and automatically detect and display BOARD_NAME on Seeeduino SAMD (XIAO M0, Wio Terminal, etc) boards***, you have to copy the whole [Seeeduino SAMD Packages_Patches](Packages_Patches/Seeeduino/hardware/samd/1.8.3) directory into Seeeduino samd directory (~/.arduino15/packages/Seeeduino/hardware/samd/1.8.3).
Supposing the Seeeduino SAMD core version is 1.8.3. These files must be copied into the directory:
- `~/.arduino15/packages/Seeeduino/hardware/samd/1.8.3/platform.txt`
- `~/.arduino15/packages/Seeeduino/hardware/samd/1.8.3/cores/arduino/Arduino.h`
- `~/.arduino15/packages/Seeeduino/hardware/samd/1.8.3/cores/arduino/Print.h`
- `~/.arduino15/packages/Seeeduino/hardware/samd/1.8.3/cores/arduino/Print.cpp`
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
These files must be copied into the directory:
- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/platform.txt`
- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/cores/arduino/Arduino.h`
- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/cores/arduino/Print.h`
- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/cores/arduino/Print.cpp`
#### 7. For STM32 boards
#### 7.1 For STM32 boards to use LAN8720
To use LAN8720 on some STM32 boards
- **Nucleo-144 (F429ZI, NUCLEO_F746NG, NUCLEO_F746ZG, NUCLEO_F756ZG)**
- **Discovery (DISCO_F746NG)**
- **STM32F4 boards (BLACK_F407VE, BLACK_F407VG, BLACK_F407ZE, BLACK_F407ZG, BLACK_F407VE_Mini, DIYMORE_F407VGT, FK407M1)**
you have to copy the files [stm32f4xx_hal_conf_default.h](Packages_Patches/STM32/hardware/stm32/2.3.0/system/STM32F4xx) and [stm32f7xx_hal_conf_default.h](Packages_Patches/STM32/hardware/stm32/2.3.0/system/STM32F7xx) into STM32 stm32 directory (~/.arduino15/packages/STM32/hardware/stm32/2.3.0/system) to overwrite the old files.
Supposing the STM32 stm32 core version is 2.3.0. These files must be copied into the directory:
- `~/.arduino15/packages/STM32/hardware/stm32/2.3.0/system/STM32F4xx/stm32f4xx_hal_conf_default.h` for STM32F4.
- `~/.arduino15/packages/STM32/hardware/stm32/2.3.0/system/STM32F7xx/stm32f7xx_hal_conf_default.h` for Nucleo-144 STM32F7.
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz,
these files must be copied into the corresponding directory:
- `~/.arduino15/packages/STM32/hardware/stm32/x.yy.zz/system/STM32F4xx/stm32f4xx_hal_conf_default.h`
- `~/.arduino15/packages/STM32/hardware/stm32/x.yy.zz/system/STM32F7xx/stm32f7xx_hal_conf_default.h
#### 7.2 For STM32 boards to use Serial1
**To use Serial1 on some STM32 boards without Serial1 definition (Nucleo-144 NUCLEO_F767ZI, Nucleo-64 NUCLEO_L053R8, etc.) boards**, you have to copy the files [STM32 variant.h](Packages_Patches/STM32/hardware/stm32/2.3.0) into STM32 stm32 directory (~/.arduino15/packages/STM32/hardware/stm32/2.3.0). You have to modify the files corresponding to your boards, this is just an illustration how to do.
Supposing the STM32 stm32 core version is 2.3.0. These files must be copied into the directory:
- `~/.arduino15/packages/STM32/hardware/stm32/2.3.0/variants/STM32F7xx/F765Z(G-I)T_F767Z(G-I)T_F777ZIT/NUCLEO_F767ZI/variant.h` for Nucleo-144 NUCLEO_F767ZI.
- `~/.arduino15/packages/STM32/hardware/stm32/2.3.0/variants/STM32L0xx/L052R(6-8)T_L053R(6-8)T_L063R8T/NUCLEO_L053R8/variant.h` for Nucleo-64 NUCLEO_L053R8.
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz,
these files must be copied into the corresponding directory:
- `~/.arduino15/packages/STM32/hardware/stm32/x.yy.zz/variants/STM32F7xx/F765Z(G-I)T_F767Z(G-I)T_F777ZIT/NUCLEO_F767ZI/variant.h`
- `~/.arduino15/packages/STM32/hardware/stm32/x.yy.zz/variants/STM32L0xx/L052R(6-8)T_L053R(6-8)T_L063R8T/NUCLEO_L053R8/variant.h`
#### 8. For RP2040-based boards using [Earle Philhower arduino-pico core](https://github.com/earlephilhower/arduino-pico)
#### 8.1 To use BOARD_NAME
**To be able to automatically detect and display BOARD_NAME on RP2040-based boards (RASPBERRY_PI_PICO, ADAFRUIT_FEATHER_RP2040, GENERIC_RP2040, etc) boards**, you have to copy the file [RP2040 platform.txt](Packages_Patches/rp2040/hardware/rp2040/1.4.0) into rp2040 directory (~/.arduino15/packages/rp2040/hardware/rp2040/1.4.0).
Supposing the rp2040 core version is 1.4.0. This file must be copied into the directory:
- `~/.arduino15/packages/rp2040/hardware/rp2040/1.4.0/platform.txt`
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
This file must be copied into the directory:
- `~/.arduino15/packages/rp2040/hardware/rp2040/x.yy.zz/platform.txt`
With core after v1.5.0, this step is not necessary anymore thanks to the PR [Add -DBOARD_NAME="{build.board}" #136](https://github.com/earlephilhower/arduino-pico/pull/136).
#### 8.2 To avoid compile error relating to microsecondsToClockCycles
Some libraries, such as [Adafruit DHT-sensor-library](https://github.com/adafruit/DHT-sensor-library), require the definition of microsecondsToClockCycles(). **To be able to compile and run on RP2040-based boards**, you have to copy the files in [**RP2040 Arduino.h**](Packages_Patches/rp2040/hardware/rp2040/1.4.0/cores/rp2040/Arduino.h) into rp2040 directory (~/.arduino15/packages/rp2040/hardware/rp2040/1.4.0).
Supposing the rp2040 core version is 1.4.0. This file must be copied to replace:
- `~/.arduino15/packages/rp2040/hardware/rp2040/1.4.0/cores/rp2040/Arduino.h`
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
This file must be copied to replace:
- `~/.arduino15/packages/rp2040/hardware/rp2040/x.yy.zz/cores/rp2040/Arduino.h`
With core after v1.5.0, this step is not necessary anymore thanks to the PR [Add defs for compatibility #142](https://github.com/earlephilhower/arduino-pico/pull/142).
#### 9. For Portenta_H7 boards using Arduino IDE in Linux
**To be able to upload firmware to Portenta_H7 using Arduino IDE in Linux (Ubuntu, etc.)**, you have to copy the file [portenta_post_install.sh](Packages_Patches/arduino/hardware/mbed_portenta/3.4.1/portenta_post_install.sh) into mbed_portenta directory (~/.arduino15/packages/arduino/hardware/mbed_portenta/3.4.1/portenta_post_install.sh).
Then run the following command using `sudo`
```
$ cd ~/.arduino15/packages/arduino/hardware/mbed_portenta/3.4.1
$ chmod 755 portenta_post_install.sh
$ sudo ./portenta_post_install.sh
```
This will create the file `/etc/udev/rules.d/49-portenta_h7.rules` as follows:
```
# Portenta H7 bootloader mode UDEV rules
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2341", ATTRS{idProduct}=="035b", GROUP="plugdev", MODE="0666"
```
Supposing the ArduinoCore-mbed core version is 3.4.1. Now only one file must be copied into the directory:
- `~/.arduino15/packages/arduino/hardware/mbed_portenta/3.4.1/portenta_post_install.sh`
Whenever a new version is installed, remember to copy this files into the new version directory. For example, new version is x.yy.zz
This file must be copied into the directory:
- `~/.arduino15/packages/arduino/hardware/mbed_portenta/x.yy.zz/portenta_post_install.sh`
#### 10. For RTL8720DN boards using AmebaD core
To avoid compile error relating to PROGMEM, you have to copy the file [Realtek AmebaD core pgmspace.h](Packages_Patches/realtek/hardware/AmebaD/3.1.4/cores/ambd/avr/pgmspace.h) into Realtek AmebaD directory (~/.arduino15/packages/realtek/hardware/AmebaD/3.1.4/cores/ambd/avr/pgmspace.h).
Supposing the Realtek AmebaD core version is 3.1.4. This file must be copied into the directory:
- `~/.arduino15/packages/realtek/hardware/AmebaD/3.1.4/cores/ambd/avr/pgmspace.h`
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
This file must be copied into the directory:
- `~/.arduino15/packages/realtek/hardware/AmebaD/x.yy.zz/cores/ambd/avr/pgmspace.h`
#### 11. For SAMD21 and SAMD51 boards using ArduinoCore-fab-sam core
To avoid compile error relating to SAMD21/SAMD51, you have to copy the file [ArduinoCore-fab-sam core pgmspace.h](Packages_Patches/Fab_SAM_Arduino/hardware/samd/1.9.0/boards.txt) into `ArduinoCore-fab-sam` samd directory (~/.arduino15/packages/Fab_SAM_Arduino/hardware/samd/1.9.0/boards.txt).
Supposing the `ArduinoCore-fab-sam` samd core version is 1.9.0. This file must be copied into the directory:
- `~/.arduino15/packages/Fab_SAM_Arduino/hardware/samd/1.9.0/boards.txt`
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
This file must be copied into the directory:
- `~/.arduino15/packages/Fab_SAM_Arduino/hardware/samd/x.yy.zz/boards.txt`
#### 12. For Seeeduino RP2040 boards
***To be able to compile, run and automatically detect and display BOARD_NAME on Seeeduino RP2040 (XIAO RP2040, Wio RP2040 Mini) boards***, you have to copy the whole [Seeeduino RP2040 Packages_Patches](Packages_Patches/Seeeduino/hardware/rp2040/2.7.2) directory into Seeeduino samd directory (~/.arduino15/packages/Seeeduino/hardware/rp2040/2.7.2).
Supposing the Seeeduino RP2040 core version is 2.7.2. These files must be copied into the directory:
- `~/.arduino15/packages/Seeeduino/hardware/rp2040/2.7.2/boards.txt`
- `~/.arduino15/packages/Seeeduino/hardware/rp2040/2.7.2/variants/Seeed_XIAO_RP2040/pins_arduino.h`
Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
These files must be copied into the directory:
- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/boards.txt`
- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/variants/Seeed_XIAO_RP2040/pins_arduino.h`
---
#### 13. For Seeeduino nRF52840 boards
**To be able to compile and run on Xiao nRF52840 boards**, you have to copy the whole [nRF52 1.0.0](Packages_Patches/Seeeduino/hardware/nrf52/1.0.0) directory into Seeeduino nRF52 directory (~/.arduino15/packages/Seeeduino/hardware/nrf52/1.0.0).
Supposing the Seeeduino nRF52 version is 1.0.0. These files must be copied into the directory:
- **`~/.arduino15/packages/Seeeduino/hardware/nrf52/1.0.0/platform.txt`**
- **`~/.arduino15/packages/Seeeduino/hardware/nrf52/1.0.0/cores/nRF5/Print.h`**
- **`~/.arduino15/packages/Seeeduino/hardware/nrf52/1.0.0/cores/nRF5/Print.cpp`**
- **`~/.arduino15/packages/Seeeduino/hardware/nrf52/1.0.0/cores/nRF5/Udp.h`**
Whenever a new version is installed, remember to copy these files into the new version directory. For example, new version is x.yy.z
These files must be copied into the directory:
- **`~/.arduino15/packages/Seeeduino/hardware/nrf52/x.yy.z/platform.txt`**
- **`~/.arduino15/packages/Seeeduino/hardware/nrf52/x.yy.z/cores/nRF5/Print.h`**
- **`~/.arduino15/packages/Seeeduino/hardware/nrf52/x.yy.z/cores/nRF5/Print.cpp`**
- **`~/.arduino15/packages/Seeeduino/hardware/nrf52/x.yy.z/cores/nRF5/Udp.h`**
---
---
### How to use
This library can be used as a replacement of C++11 STL `std::function`.
For example, we can use `typedef vl::Func ⭐️ Marcus Rugger |