01-09-2012, 03:44 PM
I2C IMPLEMENTATION USING ARM FOR WIRELESS COMMUNICATION
I2C IMPLEMENTATION.doc (Size: 31 KB / Downloads: 32)
Aim :
In this project the base station acquires the updated reading from the RPM meter connected to the remote station via zigbee by sending its identifier. Here we are using the I2C to communicate both with the ARM and the PIC micro controllers for the RTC and the Memory.
Working Description :
Remote Station
The proximity sensor is connected to the external interrupt of the PIC micro controller at the remote section. Each time when the metal comes in contact with the proximity sensor one electrical unit is generated. This value is stored in EEPROM of the PIC micro controller , hence the number of electrical units is retained even if there is no power supply.
Base Station
The user can enter the ID through keypad connected to LPC 2148 controller. If the valid ID is entered then the number of electrical units , wheel rotation , etc is transmitted from remote station to the base station through Zigbee and store it in the external memory. A switch is connected to the ARM processor , if the switch is on (i.e 1), then The received unit is displayed on LCD. If the switch is zero then the received unit from remote station is displayed on hyper terminal of PC.