Okay that won’t help either because by standard it’s using GCC 5.4.0. The FestLED now needs fancy GCC 7 and or newer.
You should use this platformio.ini
[env:leonardo]
platform = atmelavr
board = leonardo
framework = arduino
lib_deps =
FastLED
platform_packages =
; use GCC AVR 7.3.0+
toolchain-atmelavr@~1.70300.0
EDIT: The previous version of the answer had the version expression >=1.70300.0 which will however nowadays download a toolchain version that will compile the code, but leaves people unable to debug since it doesn’t contain avr-gdb. See here for full details. If you have problems using e.g. avr-stub or other AVR debugging tools when using the above >= expression, keep this in mind. The ~1.70300.0 expression downloads a good toolchain.
This will force the usage of the toolchain-atmelavr version greater than 1.70300, which contains the 7.3.0 compiler version, with which this code is compilable. See documentation.
I tested with with the Blink.ino example and it works.
>pio run
Processing leonardo (platform: atmelavr; board: leonardo; framework: arduino)
------------------------------------------------------------------------------------------------------------------------
PackageManager: Installing toolchain-atmelavr @ >=1.70300.0
Downloading [####################################] 100%
Unpacking [####################################] 100%
toolchain-atmelavr @ 1.70300.191015 has been successfully installed!
Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/atmelavr/leonardo.html
PLATFORM: Atmel AVR 2.0.0 > Arduino Leonardo
HARDWARE: ATMEGA32U4 16MHz, 2.50KB RAM, 28KB Flash
PACKAGES:
- framework-arduino-avr 5.0.0
- toolchain-atmelavr 1.70300.191015 (7.3.0)
Converting main.ino
LDF: Library Dependency Finder -> http://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Looking for FastLED library in registry
Found: https://platformio.org/lib/show/126/FastLED
LibraryManager: Installing id=126
Downloading [#############-----------------------] 36%
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Downloading [#########################-----------] 70% 00:00:00
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Downloading [################################----] 90% 00:00:00
Downloading [#################################---] 93% 00:00:00
Downloading [##################################--] 96% 00:00:00
Downloading [####################################] 100%
FastLED @ 3.3.3 has been successfully installed!
Found 7 compatible libraries
Scanning dependencies...
Dependency Graph
|-- <FastLED> 3.3.3
| |-- <SPI> 1.0
| |-- <SoftwareSerial> 1.0
Building in release mode
Compiling .pio\build\leonardo\src\main.ino.cpp.o
Compiling .pio\build\leonardo\libc14\SPI\SPI.cpp.o
Compiling .pio\build\leonardo\libf9a\SoftwareSerial\SoftwareSerial.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\FastLED.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\bitswap.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\colorpalettes.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\colorutils.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\hsv2rgb.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\lib8tion.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\noise.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\platforms.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\power_mgt.cpp.o
Compiling .pio\build\leonardo\lib01c\FastLED_ID126\wiring.cpp.o
Archiving .pio\build\leonardo\libFrameworkArduinoVariant.a
Compiling .pio\build\leonardo\FrameworkArduino\CDC.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\HardwareSerial.cpp.o
In file included from C:/Users/Maxi/Downloads/led_test/src/main.ino:1:0:
.pio\libdeps\leonardo\FastLED_ID126/FastLED.h:14:21: note: #pragma message: FastLED version 3.003.003
# pragma message "FastLED version 3.003.003"
^~~~~~~~~~~~~~~~~~~~~~~~~~~
Archiving .pio\build\leonardo\libc14\libSPI.a
Indexing .pio\build\leonardo\libFrameworkArduinoVariant.a
Archiving .pio\build\leonardo\libf9a\libSoftwareSerial.a
Compiling .pio\build\leonardo\FrameworkArduino\HardwareSerial0.cpp.o
Indexing .pio\build\leonardo\libc14\libSPI.a
Compiling .pio\build\leonardo\FrameworkArduino\HardwareSerial1.cpp.o
Indexing .pio\build\leonardo\libf9a\libSoftwareSerial.a
Compiling .pio\build\leonardo\FrameworkArduino\HardwareSerial2.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\HardwareSerial3.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\IPAddress.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\PluggableUSB.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\Print.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\Stream.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\Tone.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\USBCore.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\WInterrupts.c.o
Compiling .pio\build\leonardo\FrameworkArduino\WMath.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\WString.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\abi.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\hooks.c.o
Compiling .pio\build\leonardo\FrameworkArduino\main.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\new.cpp.o
Compiling .pio\build\leonardo\FrameworkArduino\wiring.c.o
Compiling .pio\build\leonardo\FrameworkArduino\wiring_analog.c.o
Compiling .pio\build\leonardo\FrameworkArduino\wiring_digital.c.o
Archiving .pio\build\leonardo\lib01c\libFastLED_ID126.a
Compiling .pio\build\leonardo\FrameworkArduino\wiring_pulse.S.o
Compiling .pio\build\leonardo\FrameworkArduino\wiring_pulse.c.o
Compiling .pio\build\leonardo\FrameworkArduino\wiring_shift.c.o
Indexing .pio\build\leonardo\lib01c\libFastLED_ID126.a
Archiving .pio\build\leonardo\libFrameworkArduino.a
Indexing .pio\build\leonardo\libFrameworkArduino.a
Linking .pio\build\leonardo\firmware.elf
Checking size .pio\build\leonardo\firmware.elf
Building .pio\build\leonardo\firmware.hex
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM: [= ] 9.4% (used 240 bytes from 2560 bytes)
Flash: [== ] 22.4% (used 6420 bytes from 28672 bytes)
============================= [SUCCESS] Took 9.05 seconds =============================
Also remember that writing
# Using a library name
FastLED
# ... or using library Id
126
# ... or depend on a specific version
FastLED@3.3.3
# Semantic Versioning Rules
# http://docs.platformio.org/page/userguide/lib/cmd_install.html#description
FastLED@^3.3.3
FastLED@~3.3.3
FastLED@>=3.3.3
is wrong, you’re supposed to select the version / style you need, not all 6 at once.