Maxim-integrated 73M1866B/73M1966B Reference Driver Manual de usuario descargar pdf (Pagina 61)

UG_1x66B_015 73M1866B/73M1966B Reference Driver User Guide

Rev. 2.7 61

6.6.2 M1966_MEASURE_STOP

Description

Stops an on-going measurement (current or voltage). The param parameter points to a structure that

contains the requested stop measuring entity.

#define M1966_MEASURE_STOP _IOWR(0xA4, 0xE6, unsigned int)

Prototype

int ioctl (

int chan_fd,

int M1966_MEASURE_STOP,

unsigned long param );

Parameters

Data Type Name Description

int

chan_fd

Channel descriptor.

int

M1966_MEASURE_ST

I/O control identifier for this operation.

unsigned long

param

Pointer to

M1966_MEASURE_START_STOP_t

Return Values

Data Type Description

unsigned long

0 – Successful.

-1 – Failed to stop measurement.

Example

The following example code illustrates the stopping of an on-going voltage measurement process.

M1966_MEASURE_START_t voltage;

int ret;

voltage.entity = M1966_MEASURE_ENTITY_VOLTAGE; /* stop voltage monitor */

ret = ioctl (fd, M1966_MEASURE_STOP, &voltage);

if (ret < 0)

printf (“Failed to stop line voltage monitoring”);

else

printf (“Successful”);

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Maxim-integrated 73M1866B/73M1966B Reference Driver Manual de usuario Pagina 61