C++ (Cpp) ADXL345_SPI_XYZ_Read Examples

Example #1

File: accelerometer_interface.cpp Project: fjanssen/Car2X

bool getAcceleration(alt_16 *iXYZ)
{
	bool bSuccess = false;

	if(!bSPIReady)
		bSPIReady = ADXL345_SPI_Init(GSENSOR_SPI_BASE);

	if(bSPIReady)
	{
		if (ADXL345_SPI_IsDataReady(GSENSOR_SPI_BASE))
		{
			bSuccess = ADXL345_SPI_XYZ_Read(GSENSOR_SPI_BASE, (unsigned short*) iXYZ);

			if (bSuccess)
			{
				iXYZ[0]*=4; iXYZ[1]*=4; iXYZ[2]*=4;
				//printf("X=%d mg, Y=%d mg, Z=%d mg\r\n", iXYZ[0], iXYZ[1], iXYZ[2]);
			}
		}

	}

	return bSuccess;

}

Example #2

File: main.c Project: bperez77/FPGA-data-logger

void DEMO_ACCELEROMETER(void){
    bool bSuccess;
    alt_16 szXYZ[3];
    alt_u8 id;
    const int mg_per_digi = 4;

    // release i2c pio pin 
    //IOWR_ALTERA_AVALON_PIO_DIRECTION(I2C_SCL_BASE, ALTERA_AVALON_PIO_DIRECTION_OUTPUT);    
    //IOWR_ALTERA_AVALON_PIO_DIRECTION(I2C_SDA_BASE, ALTERA_AVALON_PIO_DIRECTION_INPUT);
    IOWR(SELECT_I2C_CLK_BASE, 0, 0x00);
    
    // configure accelerometer as +-2g and start measure
    bSuccess = ADXL345_SPI_Init(GSENSOR_SPI_BASE);
    if (bSuccess){
        // dump chip id
        bSuccess = ADXL345_SPI_IdRead(GSENSOR_SPI_BASE, &id);
        if (bSuccess)
            printf("id=%02Xh\r\n", id);
    }        
    
    if (bSuccess)
        printf("Monitor Accerometer Value. Press KEY0 or KEY1 to terminal the monitor process.\r\n");
    
    while(bSuccess && !bKeyPressed){
        if (ADXL345_SPI_IsDataReady(GSENSOR_SPI_BASE)){
            bSuccess = ADXL345_SPI_XYZ_Read(GSENSOR_SPI_BASE, szXYZ);
            if (bSuccess){
                printf("X=%d mg, Y=%d mg, Z=%d mg\r\n", szXYZ[0]*mg_per_digi, szXYZ[1]*mg_per_digi, szXYZ[2]*mg_per_digi);
                // show raw data, 
                //printf("X=%04x, Y=%04x, Z=%04x\r\n", (alt_u16)szXYZ[0], (alt_u16)szXYZ[1],(alt_u16)szXYZ[2]);
                usleep(1000*1000);
            }
        }
    }
    
    if (!bSuccess)
        printf("Failed to access accelerometer\r\n");
    
}