User Manual

This will return true if the radio initialized, and false if the radio was not found. Check your wiring if its not 'showing up'

Then you can turn on the radio transmitter with

setTXpower(txpwr)

the txpwr number is the dBμV transmission power. You can set this to 88-115dBμV or 0 (for off)

Of course, you'll want to tune the transmitter! Do that with

tuneFM(

freq

)

That will set the output frequency, in 10's of KHz. So if you want to tune to 101.9 the frequency value is 10190

You can check in on the radio with

readTuneStatus()

Whcih will set the

currFreq

currdBuV

adnd

currAntCap

variables in the radio object. The first two are the frequency

and power output, the third variable is the tuning antenna capacitor it set for the best output. This number will vary with

antenna size and frequency.

RPS (Radio Power Sensing)

This function is used with two procedures.

readTuneMeasure(freq)

begins the measurement, freq is in units of 10KHz so 88.1MHz is written in as 8810

Then you have to call

readTuneStatus()

which will wait until the chip has measured the data and stick it into the

currNoiseLevel

variable

RDS/RBDS (Radio Data Broadcast)

The Si4713 has great support for sending RDS data and we made it real easy too. Initialize the subsystem with

beginRDS()

Then you can set the "station name" with

setRDSstation("AdaRadio")

The radio station name is up to 8 characters

You can also send the main buffer which usually contains the song name/artist.

setRDSbuffer( "Adafruit g0th Radio!")

You can send up to 32 characters, but you can continuously send new data, just wait a few seconds before each data

rewrite so the listener's radio has received all the data