Bluetooth needs a tempoarary buffer to load firmware. Micropython won't
work safely with malloc and free so allow these calls to be changed by
using cyw43_malloc / cyw43_free macros.
* switch all .S files to unified asm, and use a new macro `pico_default_asm_setup` to setup compiler to help porting to other compilers. Also some minor tweaks:
* switch some code to use more recent helper methods (e.g. busy_wait_at_least_n_cycles)
* add documentation to host divider header (I had this ages ago and never promoted)
* fixup erroneous docs about 32p32 values in all divider headers
* fix some compiler warnings
* rename recently added `unified_asm` macro to `pico_default_asm`
This was changed to use the same algorithm as MP.
This function is used to set the wifi mac if OTP is unset (which
shouldn't ever be the case). But if it does occur, changing the mac
might cause issues, so lets play safe and revert the change.
* Fix various non-GCC warnings (no effect on GCC)
* Reduce use of typeof since non GCC compilers may not support it
* Introduce PICO_C_COMPILER_IS_GNU, PICO_C_COMPILER_IS_CLANG, PICO_C_COMPILER_IS_IAR to CMake as if (CMAKE_C_COMPILER_ID STREQUAL "xxx") is a bit verbose
* Use "unified_asm" macro for all inline asm (it is "volatile __asm" on GNU with a .syntex unified)
* Use NOLOAD instead of COPY in linker scripts (arguably more correct anyway)
* Use the same style for setting _etext in all 4 linker scripts (to the beginning of .data). Clang aligns .data on a 16 byte boundary. Note ideally we'd
add a new symbol __data_source, however that would break backwards compatibility with existing user linker scripts
* Use "a" for .stack, .heap sections because clang complains otherwise, and they are explicitly NOLOAD anyway
* Avoid duplicating __sev, __wfe, __wfi which Clang sometimes seems to provide as built-ins
* Add missing kitchen_sink_blocked_ram binary
* Allow build with LLVM Embedded Toolchain Form ARM v 14.0.0 (unsupported atm)
If you just want to link to pico_btstack_flash_bank_headers to include
the header file you also have to link to pico_btstack_base_headers.
ENABLE_CLASSIC and ENABLE_BLE are used in header files so should be
added by the headers library
Fixes#1271
* * Harden stdio_usb and stdio in general against deadlocks which could otherwise result from doing printfs from within IRQs
* Add a test for the above
* Add mutex_try_enter_block_until API.
* Make best_effort_wfe_or_timeout not use alarms if called from within IRQ
* minor cleanup of lwip+tinyusb docs, and bump sdk verison number to 1.5.0-develop
* Update cyw43_arch docs for async_context_use
* remove accidental copy of some comments
Add a -nostdlib specifically for the check to ensure that it builds
successfully.
The -nostdlib isn't needed normally, because linking against the pico
SDK will add in definitions for the previously-missing function
There's currently no way to be notified in a "stdio" agnostic way
whether there's an incoming character available. You can poll with
getchar_timeout_us, but that's far from ideal.
Add a method that takes a callback to notify that a character might be
available.
1. Make sure Pico SDK libraries have the correct dependencies on other SDK libraries
2. Pico SDK libraries all have _headers variants to include the headers. This may facilitate building user STATIC libraries without
pulling in SDK code, though care will still need to be taken w.r.t. values of #defines
3. Make sure the _headers versions also have the correct dependencies
Note: There are a few exceptions to 1. for some non code libraries like pico_standard_link and pico_cxx_options
