* Lua: All usage of double converted to float. printf("%f") still uses promotion to double, (floating point va_args are always promoted to double)
Speed improvements:
* reordering of rotable to put most used tables at the top
* caching of last found global table
Use real pointer to rotable instead of misusing void* to pass integer value
Lua internal traces now turned on by TRACE_LUA_INTERNALS cmake option
* Replaced floating point division with multiplication (where possible), the hardware FPU is much faster at multiplication vs division.
stb_image: enabled STBI_NO_HDR and STBI_NO_LINEAR (removes code that we don't need)
* [build][CMake] Use `find_package(Git)` to confirm existence before trying to use git for version stamp; Use friendlier detection of grep executable on Windows; Use "del" on Windows instead of "rm".
* [build][Windows] Include dirent and msinttypes headers in source tree.
* Remove grep dependency for lua exports generation
* Sneaky pythons hiding in code.
* [build] Change `git_id` macro to skip check if no git directory is present, also now fails gracefully; Fix `today` macro on Windows; Report git revision; Make sure QtSvg module is found.
* Flash savings: getFileExtension() de-templated, saves 160 bytes
* Flash savings: several variables moved to rodata, RGB macro optimization (speed and can now be used to initialize rodata)
Result for Horus:
text data bss dec
1261182 808603 42020 2111805 before
1267149 803335 42124 2112608 after (data size also counts .sram section)
5kB saved in .data section (RAM and FLASH)
* Removed compiler warnings
* RGB() and ARGB() gtests added
* ARGB() optimized
* [simu] simpgmspace: Populate file date/time/size in f_stat(); Add f_utime(); Fix f_getcwd() on Windows; Fix f_mkdir() build error on Windows.
* [Lua] Add runtime support for script pre-compilation. Changes behavior with LUA_COMPILER (Re: https://github.com/opentx/opentx/issues/3318):
All .lua scripts are now compiled and saved to binary "bytecode" file (.luac extension) upon first execution;
Scripts are also automatically re-compiled if .lua source file is newer than existing .luac file;
The pre-compiled .luac version is loaded if modification time is newer or equivalent to .lua source file;
If a .luac version of a script exists, then the .lua version does not need to be present;
Guards against bytecode compatibility issues (binaries from 64-bit sim will not run on 32-bit sim/radio);
In SIMU and DEBUG builds, the source .lua file is always preferred in order to preserve full debug info (this is is controlled with new LUA_SCRIPT_LOAD_MODE macro, see lua_api.h);
GC is now run after each script is loaded.
* [Lua] Add loadScript() API function as alternative to loadfile() from Lua base. This can take advantage of the new OTx script pre-compilation features to reduce memory footprint when loading functions dynamically. This is an interface to luaLoadScriptFileToState(). Fully documented.
* [SD][Lua] Flexible file extensions support:
Allow for variable length file extensions throughout system (no longer hard-coded in LEN_FILE_EXTENSION);
Fixes issues with renaming files in SD manager which have file extensions longer than ".ext";
Expand general support for multiple file extensions per file type in sdListFiles() (eg. .lua and .luac for scripts);
Lua scripts with .luac extensions can now be selected in custom/telemetry/function menus even if no .lua version exists (duplicates are not shown);
.luac files can now also be executed from SD file manager UI.
* [Build] Added CMake options for LUA_COMPILER and LUA_SCRIPT_LOAD_MODE.
* Cosmetics.
* [SD][gui] Improve efficiency of some file name handling routines in sdmanager GUI and sdListFiles() by extending getFileExtension() function. Use shared isExtensionMatching() in place of isImageFileExtension(). Only allow executing .luac files when LUA_COMPILER defined (as per request).
* [simpgmspace] Fix f_mkdir() for MSVC build and misc. cleanup.
* [Lua] Use getFileExtension() in script loader to determine file type and check for buffer overflow.
* USB fixes:
* USB initialized when USB cable is inserted and de-initialized when disconnected (this was the original way, which proved itself unreliable in the past. Now with the new USB library it appears to work without any problems. Used in this way result in safer operation - USB controller is disabled while unconnected)
Works without force device mod
* Serial: initialization of global variables
* Reduced RAM usage - data moved to FLASH
* Detailed USB interrupt counters (+ debug print fix)
* Serial2 changes:
* stm32 driver moved to common dir.
* earlier start of driver (Taranis)
* wait for free buffer time limited
USB changes:
* Upgrade to ST USB-Host-Device_Lib_V2.2.0 (from V2.1.0) - this fixed a problem with USB serial #4086)
* other fixes for #4086
* USB-Host-Device_Lib: renamed directory to V2.2.0 (from V2.1.0)
* Re #3815: Disk cache: Write statistic added. Bigger disk cache. Show disk cache misses in CLI.
* Update to the latest FatFS R0.12b (all existing OpenTX patches have been already applied in upstream, only few ff.h modifications needed for simulator)
* Missing file
* SD card manager: do not show parent dir [..] for root directory
Fixes#2921: getValue() now also returns pilot position
Fixes#3062: Close any Lua open files when radio powers off
Fixes#3095: Lua string library added (only 6k bytes of flash used)
Re #3095: luaGetVersion() also returns version as numbers
(Ported from master 7ef790d3..4d0bd14ad and squashed into one commit)
