[SOLVED] I2C communication not able to recieve data .PIC 16f

[deeplearns]

Hi I am trying to enable PIC communication for PIC16f886 .

I have simulated the code in proteus and im able to trasmit data to the eeprom .but not recieve it back .

Please help ,I dont want it to be done with the inbuilt libraries but with the control registers .
I have attached the complete project .

Thanks .

 

[Raady Here]

how are you saying that you have copied data to EEPROM ?

You looks quiet ok .
init_Master_write(0x00,0x55); instead try to write the address 0x0000 while sending the msb and lsb it might be causing problems

 

[deeplearns]

By adding restart after sending address or adding stop and then start before recieving data the code seems to work in Proteus , but when i implement it int h/w recieve does not work . ..
After eneabling recieve the SCL seems to stay low what should i be doing wrong :evil:.

 

[Raady Here]

check the address of the eeprom , had you given it correctly ?
what eeprom are you using ?

 

[deeplearns]

Hey I got it working , finally also I actually wanted to implement it with Ar102 touch controller even that works .
I got the problem I was restarting after writing the READ bit code and then recieving data .

It has to be

Send write ,Send dummy address , Restart or Stop and start and then send read code and then read data .

Thanks all

 

[aviraje8]

I2C communication not able to send and recieve data for PIC 18f4520 and 8051

I have simulated the code for i2c comm in proteus and microC. Im unable to send and receive data to the eeprom

Please help me.
I have written code like that

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Code C - [expand]
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write_data()
{
Soft_I2c_Start();
Soft_I2c_write(0xA0);
Soft_I2c_write(0x00);
Soft_I2c_write(0x30);
Soft_I2c_stop();
write_temp=0x01;
}
read_data()
{
Soft_I2c_write(0xA0);
Soft_I2c_write(0x00);
Soft_I2c_write(0xA1);
take=Soft_I2c_read(0u);
lcd_display();
Soft_I2c_stop();
 }

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plz plz help me

 

[jayanth.devarayanadurga]

Re: I2C communication not able to send and recieve data for PIC 18f4520 and 8051

Post circuit and mikroC project files in aq zip file for testing.

 

[deeplearns]

check this file it might work for u .. u might have to play a bit the recieve ...