XBee RSSI out to Arduino Mega

Other Hardware General Electronics
1

Hello,

I've been using one of these: SparkFun XBee Explorer Regulated - WRL-11373 - SparkFun Electronics to interface an XBee with my Mega. If I want to read the RSSI output, will I need to take the RSSI through a level shifter up to 5v in order for the mega to recognize the HI state of the pulse? Or is 3v sufficient?

Thanks,

Loren

2

The Arduino reads an input on most pins as HIGH when the voltage hits at least 60% of VCC. So if your Arduino is running at 5V, anything higher than 3.0V "should" read as HIGH.

3

Does anyone know if the pwm period changes based on the buad rate of the XBee? If so how do I find out what it should be for 567000?

Thanks,

Loren

4

I don't know, but I would be very surprised if it changed.

5

Unless you are playing with different crystals, PWM won't frequency/period change. I mean, you can manually change it... but that requires code. The PWM hardware and the UART hardware are isolated and one does not affect the other.