contiki/platform/mb851/dev/mems.h
2010-10-25 09:03:38 +00:00

60 lines
2.1 KiB
C

/******************** (C) COPYRIGHT 2009 STMicroelectronics ********************
* File Name : mems.h
* Author : MCD Application Team
* Version : V1.0
* Date : January 2010
* Description : header file for mems driver
********************************************************************************
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
#ifndef _MEMS_H_
#define _MEMS_H_
/* Define --------------------------------------------------------------------*/
#include "mems_regs.h"
/* Define --------------------------------------------------------------------*/
// Sensitivity values in mg/digit
#define HIGH_RANGE_SENSITIVITY 72
#define LOW_RANGE_SENSITIVITY 18
#define MEMS_LOW_RANGE 0
#define MEMS_HIGH_RANGE 1
/* Typedef -------------------------------------------------------------------*/
/* Mems data type: three acceleration values each related to a specific direction
Watch out: only lower data values (e.g. those terminated by the _l) are
currently used by the device */
typedef struct {
int8s outx_l;
int8s outx_h;
int8s outy_l;
int8s outy_h;
int8s outz_l;
int8s outz_h;
} t_mems_data;
/* Functions -----------------------------------------------------------------*/
/* Mems Initialization function */
int8u Mems_Init(void);
int8u MEMS_On(void);
int8u MEMS_Off(void);
int8u MEMS_SetFullScale(boolean range);
boolean MEMS_GetFullScale(void);
/* Get mems acceleration values */
int8u Mems_GetValue(t_mems_data *mems_data);
#endif /* _MEMS_H_ */
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/