Hi there,

The mentioned sensor is a three pin IR sensor/demodulator. It receives a modulated stream of 38/36 KHz IR and gives the output via its pulled up open collector port. So the output for a valid 1 is 0 that is inverted. It works best when the duty cycle for the carrier (38KHz nominal depends on the last two digits of the sensor part no.).

Take an AND gate. Feed 1 input with the 38KHz output from your PWM module. You can set up your PWM module in the PIC by the PBP HPWM command. Now feed the data (non-inverted) to the other input of the AND gate. Amplify (a higher current is needed for effective IR transmission over the ranage of 5 to 10 meters) the output of the AND gate and drive some IR LED. That goes for the Tx part.

For the Rx part , just invert the output from the sensor and feed it to the PIC.

for the software you can use the Serial Out and Serial In of PBP. A maximum possible speed is 2400bps.

Regards

Sougata