Testing different toolchain-gccarmnoneeabi

platformio.ini

@@ -9,8 +9,16 @@ framework = arduino
 lib_deps =
     greiman/SdFat @ ^2.0.4
 upload_protocol = stlink
-; Older gcc version produces much faster binaries than the latest.
-platform_packages = toolchain-gccarmnoneeabi@1.40804.0
+; Different gcc versions produce much different binaries in terms of speed.
+; 1.40804.0 ; 985kb/sec
+; 1.60301.0 ; 1004kb/sec ***
+; 1.70201.0 ; 926kb/sec
+; 1.80301.0 ; 935kb/sec
+; 1.80201.181220 ; 921kb/sec
+; 1.90201.191206 ; 912kb/sec
+; 1.90301.200702 ; default - 955kb/sec
+platform_packages = toolchain-gccarmnoneeabi@1.60301.0
+
 build_unflags = 
     -Os
     -DARDUINO_ARCH_STM32F1
@@ -22,15 +30,11 @@ build_flags =
     -DARDUINO_LIB_DISCOVERY_PHASE
     -DARDUINO=10813
     -DARDUINO_ARCH_STM32
-    ; --param max-inline-insns-single=500 ; PlatformIO doesnt like this?
 
 ; Possible work around for clones, untested.
 ; https://community.platformio.org/t/cannot-upload-to-stm32-bluepill-board-over-stlink-v2/3492/25
 ; upload_flags = -c set CPUTAPID 0x2ba01477
 
-; Unsure if needed to ignore anymore or not.
-; lib_ignore = USBComposite/, FreeRTOS701, FreeRTOS821, FreeRTOS900, Ethernet_STM, libmaple
-
 ; [env:debug]
 ; build_type = debug
 ; debug_tool = stlink