API Page

Library Functions

- begin()

- task()

- setCallback()

- tune()

- tuneservice()

- set_service()

- servicevalid()

- vol()

- servicedata()

- time()

- status()

- freq_khz()

- Ensemble[]

- ServiceData[]

Dab.begin()

Dab.begin(band)

Description

Initiate the Dab library. This should normally be called only once.

Parameters

band: the frequency band fm or dab. A value of 0 selects DAB, a value of 1 selects FM (optional); if not specified the band is DAB.

Returns

None

Example

#define BAND_DAB 0#define BAND_FM 1
void setup() { //DAB Setup Dab.setCallback(ServiceData); Dab.begin(BAND_FM);}


Dab.task()

Description

Periodic call to Dab library. This should normally be called from within the application loop().

Parameters

None

Returns

None

Example

void loop() { // put your main code here, to run repeatedly: Dab.task();

}

Dab.setCallback(callbackfunction)


Description

Specifies the application function to be called when Radio Information is updated. This should normally be called only once

The callback function is called when Service Data such as Radio Text has been updated.

Parameters

callabckfunction: the callback function. Must be in the format void function(void);

Returns

None

Example

//Callback function when Radio Information is updated.void ServiceData(void){ Serial.print(Dab.ServiceData); Serial.print(F("\n"));}
void setup() { //DAB Setup Dab.setCallback(ServiceData); Dab.begin();}

Dab.tune(freq_index)

Dab.tune(freq_kHz)

Description

Tunes the receiver to a specified DAB Frequency index (ensemble) or FM frequency.

Parameters

freq_index: the frequency index.

freq_kHz: the FM frequency in 10kHz, e.g. 87500 = 87.5MHz

Returns

None

Example

uint16_t freqkhz = 87500;Dab.tune(freqkhz);Exampleuint8_t freqindex = 0;Dab.tune(freqindex);if(Dab.servicevalid() == true){ Serial.print(Dab.Ensemble); Dab.set_service(0);}

Dab.tuneservice(freq, serviceID, CompID)

Description

Tunes the receiver to a specified DAB service when all the parameters for a service are known.

Parameters

freq: the frequency index

serviceID: the ID of the service

CompID: the ID of the service Component

Returns

None

Example

// Function to tune to stored presets

void tunepreset(uint8_t preset){
 uint8_t freqindex; uint32_t serviceID; uint32_t compID;
 freqindex = presetstore[preset].freqindex; serviceID = presetstore[preset].serviceID; compID = presetstore[preset].compID;
 Dab.tuneservice(freqindex, serviceID, compID);}

Dab.set_service(index)

Description

Tunes the receiver to a specified DAB service using the service index of the currently tuned ensemble.

Note that services are not always in the same order after a tune to an ensemble.


Parameters

index: the service index

Returns

None

Example

uint8_t freqindex;;
for (freq_index = 0; freq_index < DAB_FREQS; freq_index++){ Dab.tune(freqindex); if(Dab.servicevalid() == true) { Serial.print(Dab.Ensemble); //Tune to first service of this ensemble Dab.set_service(0); break; }}


Dab.servicevalid()

Description

Checks if an ensemble contains services.

Parameters

None

Returns

bool: true the service (ensemble) contains services.

Example

uint8_t freqindex;;
for (freq_index = 0; freq_index < DAB_FREQS; freq_index++){ Dab.tune(freqindex); //Check is ensemble contains valid services if(Dab.servicevalid() == true) { Serial.print(Dab.Ensemble); Dab.set_service(0); break; }}


Dab.vol(index)

Description

Sets the audio volume

Parameters

index: volume level 0 (muted) to 63 (max). default 63.

Returns

None

Example

void setvolume(uint8_t level){ Dab.vol(level);}



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