driver_MAG3110.c File Reference

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Macros
#define	MAG3110_COUNTSPERUT   10

Functions
int8_t	MAG3110_Init (PhysicalSensor *sensor, SensorFusionGlobals *sfg)
int8_t	MAG3110_Read (PhysicalSensor *sensor, SensorFusionGlobals *sfg)
int8_t	MAG3110_Idle (PhysicalSensor *sensor, SensorFusionGlobals *sfg)

Variables
const registerreadlist_t	MAG3110_WHO_AM_I_READ []
const registerreadlist_t	MAG3110_DR_STATUS_READ []
registerreadlist_t	MAG3110_DATA_READ []
const registerwritelist_t	MAG3110_Initialization []
const registerwritelist_t	MAG3110_IDLE []

Macro Definition Documentation

#define MAG3110_COUNTSPERUT   10

Definition at line 40 of file driver_MAG3110.c.

Referenced by MAG3110_Init().

Function Documentation

int8_t MAG3110_Idle	(	PhysicalSensor *	sensor,
		SensorFusionGlobals *	sfg
	)

Definition at line 168 of file driver_MAG3110.c.

Referenced by fusion_task().

{
    int32_t     status;
    if(sensor->isInitialized == F_USING_MAG) {
        status = Sensor_I2C_Write(sensor->bus_driver, sensor->addr, MAG3110_IDLE );
        sensor->isInitialized = 0;
        sfg->Mag.isEnabled = false;
    } else {
      return SENSOR_ERROR_INIT;
    }
    return status;
}

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int8_t MAG3110_Init	(	PhysicalSensor *	sensor,
		SensorFusionGlobals *	sfg
	)

Definition at line 103 of file driver_MAG3110.c.

Referenced by fusion_task(), and main().

{
    int32_t status;
    uint8_t reg;
    status = Register_I2C_Read(sensor->bus_driver, sensor->addr, MAG3110_WHO_AM_I, 1, &reg);
    if (status==SENSOR_ERROR_NONE) {
        sfg->Mag.iWhoAmI = reg;
        if (reg!=MAG3110_WHOAMI_VALUE) {
             return(SENSOR_ERROR_INIT);
        }
    } else {
        // iWhoAmI will return default value of zero
        // return with error
        return(SENSOR_ERROR_INIT);
    }

    // Configure and start the MAG3110 sensor.  This does multiple register writes
    // (see MAG3110_Initialization definition above)
    status = Sensor_I2C_Write(sensor->bus_driver, sensor->addr, MAG3110_Initialization );

    // Stash some needed constants in the SF data structure for this sensor
    sfg->Mag.iCountsPeruT = MAG3110_COUNTSPERUT;
    sfg->Mag.fCountsPeruT = (float)MAG3110_COUNTSPERUT; // IAR optimized this out without the #pragma before the function
    sfg->Mag.fuTPerCount = 1.0F / MAG3110_COUNTSPERUT;  // IAR optimized this out without the #pragma before the function

    sensor->isInitialized = F_USING_MAG;        // IAR optimized this out without the #pragma before the function
    sfg->Mag.isEnabled = true;                  // IAR optimized this out without the #pragma before the function

    return (status);
}

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int8_t MAG3110_Read	(	PhysicalSensor *	sensor,
		SensorFusionGlobals *	sfg
	)

Definition at line 134 of file driver_MAG3110.c.

Referenced by main().

{
    uint8_t                     I2C_Buffer[6];  // I2C read buffer
    int8_t                      status;         // I2C transaction status
    int16_t                     sample[3];      // Reconstructed sample

    if(sensor->isInitialized != F_USING_MAG)
    {
        return SENSOR_ERROR_INIT;
    }

    status =  Sensor_I2C_Read(sensor->bus_driver, sensor->addr, MAG3110_DATA_READ, I2C_Buffer );
    sample[CHX] = (I2C_Buffer[0] << 8) | I2C_Buffer[1];
    sample[CHY] = (I2C_Buffer[2] << 8) | I2C_Buffer[3];
    sample[CHZ] = (I2C_Buffer[4] << 8) | I2C_Buffer[5];
    if (status==SENSOR_ERROR_NONE) {
        conditionSample(sample);  // truncate negative values to -32767
        sample[CHZ] = -sample[CHZ];  // +Z should point up (MAG3110 Z positive is down)
        addToFifo((FifoSensor*) &(sfg->Mag), MAG_FIFO_SIZE, sample);
    }

    return (status);
}

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Variable Documentation

registerreadlist_t MAG3110_DATA_READ[]

Initial value:

=
{
    { .readFrom = MAG3110_OUT_X_MSB, .numBytes = 6 }, __END_READ_DATA__
}

Definition at line 57 of file driver_MAG3110.c.

Referenced by MAG3110_Read().

const registerreadlist_t MAG3110_DR_STATUS_READ[]

Initial value:

=
{
    { .readFrom = MAG3110_DR_STATUS, .numBytes = 1 }, __END_READ_DATA__
}

Definition at line 51 of file driver_MAG3110.c.

const registerwritelist_t MAG3110_IDLE[]

Initial value:

=
{
  
  { MAG3110_CTRL_REG1, 0x00, 0x00 },
    __END_WRITE_DATA__
}

Definition at line 160 of file driver_MAG3110.c.

Referenced by MAG3110_Idle().

const registerwritelist_t MAG3110_Initialization[]

Definition at line 63 of file driver_MAG3110.c.

Referenced by MAG3110_Init().

const registerreadlist_t MAG3110_WHO_AM_I_READ[]

Initial value:

=
{
    { .readFrom = MAG3110_WHO_AM_I, .numBytes = 1 }, __END_READ_DATA__
}

Definition at line 45 of file driver_MAG3110.c.