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PX4-Autopilot/src/drivers/drv_batt_smbus.h
T
Randy Mackay 04863dc2d1 batt_smbus: add ioctl to return batt capacity
Also use full charge capacity instead of design capacity so that an old
battery's capacity will appear as lower than its original capacity but
it will still report 100% charged after charging
2015-04-10 14:17:25 +09:00

58 lines
2.2 KiB
C

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/**
* @file drv_batt_smbus.h
*
* SMBus battery monitor device API
*/
#pragma once
#include <stdint.h>
#include <sys/ioctl.h>
#include "drv_orb_dev.h"
/* device path */
#define BATT_SMBUS0_DEVICE_PATH "/dev/batt_smbus0"
/*
* ioctl() definitions
*/
#define _BATT_SMBUS_IOCBASE (0x2e00)
#define _BATT_SMBUS_IOC(_n) (_IOC(_BATT_SMBUS_IOCBASE, _n))
/** retrieve battery capacity */
#define BATT_SMBUS_GET_CAPACITY _BATT_SMBUS_IOC(1)