If a timer triggers while the idle thread is running, previously a stack
overflow was triggered. This commit increases the idle threads stack size if
xtimer is used.
- Added missing wait for TX flush
- Grouped access to the same registers of the Ethernet PHY to reduce accesses.
(The compiler won't optimize accesses to `volatile`, as defined in the C
standard.)
- Add missing `volatile` to DMA descriptor, as memory is also accessed by the
DMA without knowledge of the compiler
- Dropped `__attribute__((packed))` from DMA descriptor
- The DMA descriptor fields need to be aligned on word boundries to
properly function
- The compiler can now more efficiently access the fields (safes ~300 B ROM)
- Moved the DMA descriptor struct and the flags to `periph_cpu.h`
- This allows Doxygen documentation being build for it
- Those types and fields are needed for a future PTP implementation
- Renamed DMA descriptor flags
- They now reflect to which field in the DMA descriptor they refer to, so
that confusion is avoided
- Added documentation to the DMA descriptor and the corresponding flags
The Atmel I2C peripheral supports arbitrary I2C frequencies.
Since the `i2c_speed_t` enum just encodes the raw frequency values,
we can just use them in the peripheral definition.
We just have to remove the switch-case block that will generate an error
for values outside of `i2c_speed_t`.
For thread-safe calling of C++ constructs of statically allocated class
instances some platform support code is needed. This commit ads one
implementation compatible with g++.
If external modules use C++ code and forget to require the `cpp` feature,
linking will still take places using $(CC). This commit adds a check if C++ code
was detected without the feature `cpp` being used, now the build is aborted
with a helpful error message rather than a linker error.
When mixing C and C++ code, $(CXX) has to be used for linking. Prior to this
commit, the build system automatically uses $(CXX) if the application contains
C++ source code. However, if C++ is used in an module only, $(CC) is still
used. This has not let to problems, as internal modules must be written in C.
For external modules this restriction does not apply.
This commit checks if the cpp feature is used. In that case, $(CXX) is used
for linking over $(CC). This way external modules may use C++ code.
- Cleans up pthread initialization, checks for ret code !=0,
instead of -1. For some platforms the first thread was not
started and therefore `pthread_join` could not succeed.
- Always specify stackaddr and stacksize to not use malloc
- Formatting and uncrustify
On Nucleo-32 boards with STM32 MCUs that do not have the GPIO port F, the Arduino pins D7 and D8 are not connected to PF0 and PF1 but to PC14 and PC15. This is also the case for the Nucleo-L412KB.
