Remarks

Tea5767
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

The TEA5767 FM module is based on the TEA5767GH which is a single-chip, electronically tuned, FM stereo radio for low-voltage applications with fully integrated Intermediate Frequency (IF) selectivity and demodulation.

The TEA5767 is controlled via I2C. It comes with two 1/4" jacks, one for connection to a headphone/speaker and one to connect an antenna (often sold with the module).

Purchasing

You can get a TEA5767 module (with antenna included) from the following supplier(s):

• newegg

Code Example

Tea5767 radio;

public override Task Initialize()
{
    Resolver.Log.Info("Initializing...");

    radio = new Tea5767(Device.CreateI2cBus());

    return Task.CompletedTask;
}

public async override Task Run()
{
    //scan through avaliable stations
    for (int i = 0; i < 8; i++)
    {
        await Task.Delay(1000);

        radio.SearchNextSilent();

        Resolver.Log.Info($"Current frequency: {radio.GetFrequency()}");
    }

    //set a known station
    radio.SelectFrequency(new Frequency(94.5, Frequency.UnitType.Megahertz));
}

Sample project(s) available on GitHub

Wiring Example

To wire a TEA5767 to your Meadow board, connect the following:

TEA5767	Meadow Pin
GND	GND
SCL	D08 (SCL)
SDA	D07 (SDA)
VCC	3V3

It should look like the following diagram:

Characteristic	Locus
Inheritance	System.Object > Tea5767
Namespace	Meadow.Foundation.Audio.Radio
Assembly	Tea5767.dll

Syntax

public class Tea5767 : object

Constructors

Tea5767(II2cBus, Byte)

Create a new TEA5767 object using the default parameters

Declaration

public Tea5767(II2cBus i2cBus, byte address = null)

Parameters

Type	Name	Description
II2cBus	i2cBus	I2Cbus connected to the radio
System.Byte	address	Address of the bus on the I2C display.

Properties

IsMuted

Is the audio muted

Declaration

public bool IsMuted { get; set; }

Property Value

Type	Description
System.Boolean

Methods

EnableStandby(Boolean)

Enable standby mode

Declaration

public void EnableStandby(bool enable)

Parameters

Type	Name	Description
System.Boolean	enable

EnableStereo(Boolean)

Enable stereo if set to mono

Declaration

public void EnableStereo(bool enable)

Parameters

Type	Name	Description
System.Boolean	enable

GetFrequency()

Get the current radio frequency

Declaration

public Frequency GetFrequency()

Returns

Type	Description
Frequency

GetSignalLevel()

Get Signal Level

Declaration

public byte GetSignalLevel()

Returns

Type	Description
System.Byte	level as a byte (0-255)

IsReady()

Is the radio ready for operation

Declaration

public bool IsReady()

Returns

Type	Description
System.Boolean

IsSearchDown()

Is search mode down

Declaration

public bool IsSearchDown()

Returns

Type	Description
System.Boolean

IsSearchUp()

Is search mode up

Declaration

public bool IsSearchUp()

Returns

Type	Description
System.Boolean

IsStandby()

Is the radio in standby mode

Declaration

public bool IsStandby()

Returns

Type	Description
System.Boolean

IsStereo()

Is the current station stereo

Declaration

public bool IsStereo()

Returns

Type	Description
System.Boolean

Mute()

Mute audio if not muted

Declaration

public void Mute()

MuteLeft()

Mute the left channel

Declaration

public void MuteLeft()

MuteRight()

Mute the right channel

Declaration

public void MuteRight()

SearchFromBeginningMuted()

Start searching for station from lowest frequency (87Mhz)

Declaration

public bool SearchFromBeginningMuted()

Returns

Type	Description
System.Boolean	true if station found

SearchFromEndMuted()

Start searching for station from highest frequency (108Mhz)

Declaration

public bool SearchFromEndMuted()

Returns

Type	Description
System.Boolean

SearchNext()

Search to next station

Declaration

public bool SearchNext()

Returns

Type	Description
System.Boolean

SearchNextSilent()

Search to next station and mute while seeking

Declaration

public bool SearchNextSilent()

Returns

Type	Description
System.Boolean

SelectFrequency(Frequency)

Select radio frequency

Declaration

public void SelectFrequency(Frequency frequency)

Parameters

Type	Name	Description
Frequency	frequency	the frequency

SetHighCutControlOff()

Disable high cut control

Declaration

public void SetHighCutControlOff()

SetHighCutControlOn()

Enable high cut control

Declaration

public void SetHighCutControlOn()

SetSoftMuteOff()

Turn soft mute off if enabled

Declaration

public void SetSoftMuteOff()

SetSoftMuteOn()

Enable soft mute

Declaration

public void SetSoftMuteOn()

SetStereoNoiseCancellingOff()

Disable stereo noise cancelling

Declaration

public void SetStereoNoiseCancellingOff()

SetStereoNoiseCancellingOn()

Enable stereo noise cancelling

Declaration

public void SetStereoNoiseCancellingOn()

StartSearchFromBeginning()

Start searching for station from lowest frequency (87Mhz)

Declaration

public bool StartSearchFromBeginning()

Returns

Type	Description
System.Boolean	true if station found

StartSearchFromEnd()

Start searching for station from highest frequency (108Mhz)

Declaration

public bool StartSearchFromEnd()

Returns

Type	Description
System.Boolean

UnmuteLeft()

Unmute the left channel

Declaration

public void UnmuteLeft()

UnuteRight()

Unmute the right channel

Declaration

public void UnuteRight()