I2C comunication between PIC24f128, PIC 16f873 and EEPROM 24C512 (LCD)

This circuit is a little more complex because the Master manages two Slaves which are the PIC16F873 and the 24C512 EEPROM.

The Master uses the simulator to control 4 analog inputs which are 2 Ultrasonic Distance Sensors, a speed sensor, and a temperature sensor. Each of these sensors is read by the master, and then it sends data to the PIC16F873 and transfers it to the LEDs of its PORTB. While the EEPROM is memorized the name of functions which is associated with the sensor's value.
For more details see the sequences below

1. Master reading the first analoque sensor
2. The Master calls and reads the cell of EEPROM where the name of the first sensor is located
3. The Master writes to the Slave (PIC16F873) the name of the sensor which previously read from the EEPROM and analogue valore from the first sensor
4. The Slave PIC16F873 send all information to the LCD and LEDs via the PORTB
5. Same cycles for others 3 Sensors

The assembly routine can be downloaded here after registration

For more details click here