Keep the compiled '.bin' file to remove the need to compile it when
flashing. This remove the need to have the toolchain when flashing so
allow compiling and flashing with `BUILD_IN_DOCKER=1` without a local
toolchain.
Even if it ends up storing a binary, the file is only 34 bytes.
Get OBJDUMP from the environment instead of hardwriting the value.
This is a prerequisite to allow using `objdump` when building from docker
when not having the `arm` toolchain installed.
- fcfield is located in memory at 0x400-0x40f. Its content is only read
upon reset, therefore if in presence of a bootloader and multiple
applications, the fcfield will only be read when the bootloader
is loaded. As long as we flash at IMAGE_OFFSET > 0x410 we do not
care about the fcfield content since it won't get overwritten.
PREFLASHER/PREFFLAGS/FLASHDEPS are evaluated by the main Makefile.include.
Their value does not need to be exported.
Testing
-------
`git diff --word-diff` only reports `export` being removed.
`git show --stat` reports `16 insertions(+), 16 deletions(-)`
Which is the same amount as lines that where matching
`export[[:blank::]]\+VARIABLE` plus the newline that is said to have
changed.
FLASHER and FFLAGS are evaluated by the main Makefile.include or by file
included by it. Their value does not need to be exported.
This will also prevent evaluating 'PORT' for FFLAGS when not needed.
Testing
-------
`git diff --word-diff` only reports `export` being removed.
`git show --stat` reports `84 insertions(+), 84 deletions(-)`
Which is the same amount as lines that where matching
`export[[:blank::]]\+VARIABLE`.
The currently supported SAM0 MCUs (samd21, saml21, saml1x) share the same
Timer peripheral, yet each of them carries it's own copy of the Timer
driver.
This introduces a new timer driver that is common for all sam0 MCUs and
uses structs for configuration instead of defines.
If the .noinit section starts at the beginning of the RAM,
a bootloader that is unaware of it will clear it.
Instead, move it behind the .bss section, hoping that a bootloader
will always use less .bss memory than RIOT proper.
This commit adds the periph_uart_mode USEMODULE
It implements all functionality defined in the common uart driver
This means all parity modes, data bits, and stop bits
Make it possible to specify a section of RAM that is not touched by
the init routing so data can be kept across resets.
This should behave the same as on atmega & lpc2387.
gcc9 started realizing that _sram is basically an uint8_t[1] and thus
HARDFAULT_HANDLER_REQUIRED_STACK_SPACE cannot be added to it without
exceeding the one-sized array.
This commit casts _sram to (uintptr_t) where that happens.
The currently supported SAM0 MCUs (samd21, saml21, saml1x) share the
same RTC peripheral, yet each of them carries it's own copy of the RTT
driver.
Unify the drivers and move them to sam0_common.
