clipboard.txt

• various command lines and notes

todo.txt

• todo list and suggestions

User_Setup.h

• manufacturer provided 'TFT_eSPI' settings
• settings specified in 'platformio.ini' instead of copying the file into 'lib/TFT_eSPI-2.5.43'

troubleshooting

device does not show up as '/dev/ttyUSB0' on linux

• service 'brltty' might be the problem
• disable it and related services or uninstall it

platformio.ini

• additional flags

;
; compile c++ 23
;
;build_flags = -std=gnu++2a
;build_unflags = -std=gnu++11

;
; flags below generate an excessive number of warnings from included dependencies
;
;build_src_flags = -Wunused-variable -Wuninitialized -Wshadow -Wsign-conversion -Wconversion
;build_src_flags =
;    -Wall -Wextra -Wpedantic
;    -Wunused-variable -Wuninitialized -Wsign-conversion -Wconversion -Wold-style-cast
;    -Wshadow -Wcast-qual -Wctor-dtor-privacy -Wdisabled-optimization -Wlogical-op
;    -Wmissing-declarations -Woverloaded-virtual -Wredundant-decls -Wsign-promo
;    -Wstrict-null-sentinel -Wswitch-default -Wfloat-equal -Wnoexcept
;    -Wno-unused-function