[SOLVED] Problem interfacing ADXL345 with PIC18F4550 SPI

[mehtadhaval]

I am trying to read data from ADXL3445 accelerometer using PIC18F4550. The ADXL345 supports both SPI and I2C interfaces. I am using SPI for my project.

The code I am using for reading and writing data to ADXL is as follows :

#define SPI_CS LATAbits.LATA5
unsigned char POWER_CTL = 0x2D;    //Power Control Register
unsigned char DATA_FORMAT = 0x31;

Code to initialize ADXL345 :

    TRISAbits.TRISA5 = 0;
    TRISBbits.TRISB1 = 0;
    TRISCbits.TRISC7 = 0;
    SPI_CS = 1;
    OpenSPI(SPI_FOSC_64, MODE_10, SMPEND);

    SPI_CS = 0;
    Delay100TCYx(1);
    WriteSPI(DATA_FORMAT); 
    WriteSPI(0x01);
    Delay100TCYx(1);
    SPI_CS = 1;
    Delay100TCYx(1);

    SPI_CS = 0;
    Delay100TCYx(1);
    WriteSPI(POWER_CTL);
    WriteSPI(0x08);
    Delay100TCYx(1);
    SPI_CS = 1;
    Delay100TCYx(1);

After initialization , I have put following code to read the device ID of ADXL which should give me 0xE5. The code is as follows :

    SPI_CS = 0;
    Delay100TCYx(1);
    WriteSPI(0x80 | 0x00); //0x00 is the address to read device ID
    readByte = ReadSPI();
    Delay100TCYx(1);
    SPI_CS = 1;
    Delay100TCYx(1);

I am getting 0xE5 as response. But if I write the same code to read any of the data registers (DATA[X-Z][0-1]), I am getting 0x00 as the response everytime. Same goes for each address except 0x00 (devId).

I have checked the SDO and SDI with SCLK on oscilloscope and I have attached the screenshot here. The first screenshot is of receiving 0xE5 and the second screenshot is when I am trying to read any other register.