hi all
for my project i wrote the following code and simulate through protest.

void main() {

int a;
char txt[10];
//Soft_I2C_Config(&PORTD, 3, 4); // Initialize full master mode
lcd_config(&PORTB,1,2,3,7,6,5,4);
TRISB = 0;
PORTB=0;

Lcd_Out(1,2, "Hello");
Lcd_Cmd(Lcd_CURSOR_OFF);


// Soft_I2C_Start(); // Issue start signal
// Soft_I2C_Write(0xA0); // Address PCF8583
// Soft_I2C_Write(0); // Start from word at address 0 (configuration word)
// Soft_I2C_Write(0x80); // Write 0x80 to config. (pause counter...)
// Soft_I2C_Write(0); // Write 0 to cents word
// Soft_I2C_Write(0); // Write 0 to seconds word
// Soft_I2C_Write(0x30); // Write 0x30 to minutes word
// Soft_I2C_Write(0x11); // Write 0x11 to hours word
// Soft_I2C_Write(0x30); // Write 0x24 to year/date word
// Soft_I2C_Write(0x08); // Write 0x08 to weekday/month
// Soft_I2C_Stop(); // Issue stop signal
//
// Soft_I2C_Start(); // Issue start signal
// Soft_I2C_Write(0xA0); // Address of eeprom
// Soft_I2C_Write(0); // Start from word at address 0
// Soft_I2C_Write(0); // Write 0 to config word (enable counting)
// Soft_I2C_Stop(); // Issue stop signal




}//~!

the software I2C doesnt works and if i enable Soft_I2C_Config(&PORTD, 3, 4);(uncomment) then the simulations strucks and even the LCD out put didin't come. don't care of the rest of the i2c codes. even still they are disabled and if i just enable only "Soft_I2C_Config(&PORTD, 3, 4);" line then there is no lcd output at simulations.
hereby i've attached my microc code and protest file.please can any one explore this problem.

 

I guess you are using the MikroC compiler ?

If you look in the help for Soft_I2C_Config, it says: "Note: This library implements time-based activities, so interrupts need to be disabled when using Soft I²C"

Then if you look for "Lcd_Config", it does not say if it's using interrupts or not, but logically it probably does...

So, in this case, you probably have a conflict between the two because of this reason

 

yes i'm using microc complier. ok.. i got the point.so now what can i do for make it work? do you have any suggestions? is there are any compliers which overcomes this drawback?

 

I, too, will look up the MicroC compiler and libraries.
Sumani: A schematic might help.
Many problems with I2C come from three areas:
- sensing the idle state of the two lines: SDA & SCL
which at Idle should be High; code that waits for
these lines to be high may hang if these lines
never go high
- incorrectly adressing the target device;
- looking (or waiting) for the ACK or NACK from
the target device;
My apologies to MicroC as these issues are most likely addressed in the libraries.
This information is provided to the forum as gerneralized comments for anyone wanting bit-bang their own I2C code.
Regards: JJ

 

I think maybe you should ask the same question here:
http://www.mikroe.com/forum/viewforum.php?f=13