CCS/TMS320F28335: Interfacing I2C driver with TMS320F28335

Hi Hari,

This post contains some software that you can reference:

https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/773846

You can also reference the i2c example in c2000ware through the following file path:

C:\ti\c2000\C2000Ware_3_02_00_00\device_support\f2833x\examples\i2c_eeprom

Thanks

thank you for the replay.

here i am using the driver TM1640 i think the base address of this driver is 0x40 (is this base address correct ?).

still am not getting the output, please follow my code.. and check if any corrections needs.

////////////////////////////////////////////////////////////////////////////////////////////

in main() i am sending 
   {

TM1640_init(0x8F);                                    Delay(0x55);
TM1640_send_command(0x88 | 0x07);    Delay(0x55);
TM1640_send_data(1, 0x32);                   Delay(0x55);
TM1640_send_data(2, 0x33);                   Delay(0x55);

   }

//***** setting 1 MHz clock for slave device *******//

void I2CA_Init(void)
{
I2caRegs.I2CSAR = 0x0040;  //slave base address 
I2caRegs.I2CPSC.all = 3;  //(150Mhz/(3+1) = 37.5 Mhz)
I2caRegs.I2CCLKL = 10; 
I2caRegs.I2CCLKH = 5; 
I2caRegs.I2CIER.all = 0xC4;

I2caRegs.I2CMDR.all = 0x0020; 
I2caRegs.I2CFFTX.all = 0x6000; 
I2caRegs.I2CFFRX.all = 0x2040;

return;

}

///************ data sending procedure **********///

void TM1640_write( unsigned char Byte )
{
  I2caRegs.I2CSAR = 0x40;

  I2caRegs.I2CCNT = 1;

  I2caRegs.I2CDXR = Byte;
  I2caRegs.I2CMDR.all = 0x6E20;

  Delay(0xFFF);//Delay(0xFFF);
}

interrupt void i2c_int1a_isr(void) //I2C_Int1
{
 Uint16 IntSource;

 IntSource = I2caRegs.I2CISRC.all;
 if(IntSource == 0x0003 )
 {
    if(I2caRegs.I2CSTR.bit.NACK == 1)
    {
     I2caRegs.I2CMDR.bit.STP = 1;
     I2caRegs.I2CSTR.all = 0x0002;
    }

  }
 else{}

     PieCtrlRegs.PIEACK.all = PIEACK_GROUP8;

}

///////////////end of data sending procedure //////////////////

void TM1640_init(unsigned char brightness_level)
{
   TM1640_send_command(auto_address);
   TM1640_send_command(brightness_level);
   TM1640_clear_display();
}

void TM1640_send_command(unsigned char value)
{
   TM1640_write(value);
}

void TM1640_send_data(unsigned char address, unsigned char value)
{
   TM1640_send_command(fixed_address);
  TM1640_write((0xC0 | (0x0F & address)));
  TM1640_write(value);
}

void TM1640_clear_display()
{
    unsigned char s = 0x00;
    TM1640_write(start_address);
    for(s = 0x00; s < no_of_segments; s += 0x01)
  {
   TM1640_write(font[0]);
  }
}