accumulator.h File Reference

Tallies a running sum of the input. More...

#include "processor_common.h"

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Functions
METAWEAR_API int32_t	mbl_mw_dataprocessor_accumulator_create (MblMwDataSignal *source, void *context, MblMwFnDataProcessor processor_created)
	Create an accumulator whose output is the same size as the input. More...
METAWEAR_API int32_t	mbl_mw_dataprocessor_accumulator_create_size (MblMwDataSignal *source, uint8_t output_size, void *context, MblMwFnDataProcessor processor_created)
	Create an accumulator with a specific output size. More...
METAWEAR_API int32_t	mbl_mw_dataprocessor_set_accumulator_state (MblMwDataProcessor *accumulator, float new_running_sum)
	Overwrites the current accumulator value with a new value Can be used to reset the running sum. More...

Detailed Description

Tallies a running sum of the input.

Copyright

MbientLab License

Function Documentation

mbl_mw_dataprocessor_accumulator_create()

METAWEAR_API int32_t mbl_mw_dataprocessor_accumulator_create	(	MblMwDataSignal *	source,
		void *	context,
		MblMwFnDataProcessor	processor_created
	)

Create an accumulator whose output is the same size as the input.

Keeps a running sum of the input A pointer representing the processor will be passed back to the user via a callback function.

Parameters

source	Data signal providing the input for the processor
context	Pointer to additional data for the callback function
processor_created	Callback function to be executed when the processor is created

mbl_mw_dataprocessor_accumulator_create_size()

METAWEAR_API int32_t mbl_mw_dataprocessor_accumulator_create_size	(	MblMwDataSignal *	source,
		uint8_t	output_size,
		void *	context,
		MblMwFnDataProcessor	processor_created
	)

Create an accumulator with a specific output size.

Keeps a running sum of the input and returns the output as the specified size A pointer representing the processor will be passed back to the user via a callback function.

Parameters

source	Data signal providing the input for the processor
output_size	Output size, between [1, 4] bytes
context	Pointer to additional data for the callback function
processor_created	Callback function to be executed when the processor is created

mbl_mw_dataprocessor_set_accumulator_state()

METAWEAR_API int32_t mbl_mw_dataprocessor_set_accumulator_state	(	MblMwDataProcessor *	accumulator,
		float	new_running_sum
	)

Overwrites the current accumulator value with a new value Can be used to reset the running sum.

Parameters

accumulator	Accumulator processor to modify
new_running_sum	New running sum of the accumulator

Returns

MBL_MW_STATUS_OK if processor state was updated, MBL_MW_STATUS_WARNING_INVALID_PROCESSOR_TYPE if a non-accumulator was passed in