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