Prep to distrubte the magic numbers assgined in parameters.cpp
to the board_config.h
common/board_common.h will define:
1) BOARD_BATTERY[1|2]_V_DIV as 0.0f if not defined to ensure
the missing default trips a low voltage lockdown
2) BOARD_BATTERY[1|2]_A_PER_V as 0.0f if not defined to ensure
the default leads to an unrealistic current value.
return -EINVAL on any GPIO ioctl operation when there are
no GPIO pins defined in the board config. I.E.
BOARD_FMU_GPIO_TAB is not defined.
BOARD_FMU_GPIO_TAB is now optional and if it is defined
then the logical BOARD_HAS_FMU_GPIO is defined and
will enable the px4fmu driver to perform the physical GPIO
operations.
To simplify integration of an EEPROM device with a Write Protect
control pin, we add an overidable BOARD_EEPROM_WP_CTRL macro
the does nothing.
A board that provids the GPIO for WP should define
BOARD_EEPROM_WP_CTRL(_protected_true) that will set the WP GPIO
to the Protected state when passed true.
boards define BOARD_NAME, so board_name() is not necessary. HW_ARCH was
just a wrapper around board_name().
This patch simplifies to having only one common method px4_board_name().
David Sidrane