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board_common:Define defaults for Open circuit max and UV min

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BOARD_ADC_OPEN_CIRCUIT_V is the voltage present on an ADC due
   to the bias current on the terminition resistor.

   BOARD_VALID_UV is the under voltage min set by resistors on a
   board's Power selector.

   A battery is considered connected when the Voltage measures is
   greater than BOARD_ADC_OPEN_CIRCUIT_V.

   In the case where BOARD_ADC_OPEN_CIRCUIT_V is greater then
   BOARD_VALID_UV we can use the HW to qualify connected.
This commit is contained in:
David Sidrane
2017-09-06 16:20:33 -10:00
committed by Daniel Agar
parent 25fef84f98
commit 5018723eb2
1 changed files with 14 additions and 0 deletions
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src/drivers/boards/common/board_common.h
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@@ -148,6 +148,20 @@
/* Legacy default */
/* Define the default maximum voltage resulting from the bias on ADC termination */
#if !defined(BOARD_ADC_OPEN_CIRCUIT_V)
# define BOARD_ADC_OPEN_CIRCUIT_V (1.5f)
#endif
/* Define the default Under voltage Window on the LTC4417 as set by resistors on the
* board. Default is that of the FMUv2 at 3.7V
*/
#if !defined(BOARD_VALID_UV)
# define BOARD_VALID_UV (3.7f)
#endif
#if !defined(BOARD_NUMBER_BRICKS)
# define BOARD_NUMBER_BRICKS 1
# if !defined(BOARD_ADC_BRICK_VALID)