Lpc2000

Hello,

I'm trying to get the I2C bus working on a LPC2129 witj CrossStudio. 
I'm already working on it for 2 day's. But no result. Is there some one 
how can help my?

Thanks

--- In lpc2000@yahoogroups.com, "neptunus1000" <roykrikke@h...> wrote:
> 
> Hello,
> 
> I'm trying to get the I2C bus working on a LPC2129 with 
CrossStudio. 
> I'm already working on it for 2 day's. But no result. Is there some 
one 
> who can help my?
> 
> Thanks

De Clock line is not working. The Data line is working. I'm confused.

The code I'm using:

#define STA	0x20
#define SIC	0x08
#define SI	0x08
#define STO	0x10
#define STAC    0x20
#define AA	0x04

class I2C{
  private:
    
  public:
    I2C(void);
    void delay(int);
    void InitI2C(void);
    void SendSlaveAdress(int addressSlave);
    int ReadOnI2C(void);
    void WriteOnI2C(int data);
};

I2C::I2C(void){
  
}
void I2C::delay(int d){     
  for(; d; --d){
    asm volatile ("nop");
  }
}

void I2C::InitI2C(void){  
	//  Set pinouts as scl and sda
	PINSEL0  |= 0x00000050;
	PINSEL0  &= 0xFFFFFF5F;
	
	I2SCLL = 400;
	I2SCLH = 400;
        I2CONCLR = 0xFF;
	delay(10);

	I2CONSET = 0x00000040;  //Active Master Mode on I2C bus
}


void I2C::SendSlaveAdress(int addressSlave){	
	if(!(addressSlave & 0x01)){ //test if it's a master adress
		//while(I2C_I2STAT!=0xF8);	
		I2CONSET = STA;
		while(I2STAT != 0x08); 	//Set and wait the start
		
		I2DAT = addressSlave; // Charge slave Address
		I2CONCLR = SIC | STAC; // Clear i2c interrupt bit to 
send the data    
		while(I2STAT != 0x18 && !(I2CONSET & SI));
	//wait the ACK		
	} else {			//it's a slave adress
		I2CONSET = STA;
		I2CONCLR = SIC;
		while(I2STAT != 0x10 && !(I2CONSET & SI)); 	//Set 
and wait the start		
		I2DAT = addressSlave; // Charge slave Address	
		I2CONCLR = SIC | STAC; // Clear i2c interrupt bit to 
send the data    
		while(I2STAT != 0x40 && !(I2CONSET & SI));
	//wait the ACK
	}
}


int ReadOnI2C(void){
	I2CONCLR = SIC;//ACK from the master
	while(I2STAT != 0x50 && !(I2CONSET&SI)); //wait the data 
        // Read the data...  
	return I2DAT;	
}

void WriteOnI2C(int data){
	I2DAT = data; // Charge Data 
	I2CONCLR = SIC; // Clear i2c interrupt bit to send the 
data    	
	while(I2STAT != 0x28 && !(I2CONSET & SI));	//wait the ACK
}