FM radio

[juani_c 66]

I've started to build a simple FM radio. It is based in a small module with a TEA5767. The code it's pretty basic for now, I'm just sending a fix frequency as part of the initial tests.

 

#include 
#include "USI_I2CMaster.h"

int StatusCallback(unsigned char c)
{
return TI_USI_EXIT_LPM; // Exit active for next transfer
}

void main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;

BCSCTL1 = CALBC1_16MHZ; // Set range
DCOCTL = CALDCO_16MHZ; // SMCLK = DCO = 1MHz

/* Initialize USI module, clock ~ SMCLK/128 */
TI_USI_I2C_MasterInit(USIDIV_7+USISSEL_2+USICKPL, StatusCallback);

unsigned char TxDataConfig[5] = {0x2E,0xBA,0x10,0x10,0xC0};

/*Write data, configuration register
TI_USI_I2CWrite(SlaveAddress, Length, Multi, TxData) */
__disable_interrupt();
TI_USI_I2CWrite(0x60, 5, 0,TxDataConfig);
__bis_SR_register(LPM0_bits + GIE);

TI_USI_I2CStop();

}

 

You'll find more information here.

[bluehash 1,581]

Good job Juani.. I like your documentation.

[kff2 22]

Thanks for sharing this. A good place for buying TEA5767 is suntekstore.com -- about $10 for 10 pcs (after a $2 off coupon), or one for $2.16, with free shipping. Everything on ebay is more expensive. I ordered a couple to play with.

 

Does anyone know of a similar chip that can also do AM?

[juani_c 66]

I like your documentation.

Thanks! the main reason for all that writing is just to have an excuse to write in English and practise my grammar/spelling/vocabulary etc.

 

A good place for buying TEA5767 is suntekstore.com

I haven't heard about that site, i will check it out. Is it reliable? Thanks.

[RobG 1,892]

...A good place for buying TEA5767 is suntekstore.com...

Thanks for the link, didn't order FM module but I got few other things.

[kff2 22]

I like your documentation.

Thanks! the main reason for all that writing is just to have an excuse to write in English and practise my grammar/spelling/vocabulary etc.

 

A good place for buying TEA5767 is suntekstore.com

I haven't heard about that site, i will check it out. Is it reliable? Thanks.

 

suntekstore.com is reliable and ships very quickly too -- about a week to the US.

 

They also have good coupons most of the time. See http://www.retailmenot.com/view/suntekstore.com. Unfortunately, they recently introduced a $15 minimum for the 12% off coupon -- I used it for buying a bunch of small items in the past.

[kff2 22]

 

Does anyone know of a similar chip that can also do AM?

 

To answer my own question, there is SI4735, which can do FM/AM/SW/LW.

 

http://www.silabs.com/products/audiovid ... 73435.aspx

 

Digikey has them. I love their pricing structure

 

100 @ $16

1000 @ $2

 

They only have 400 in stock

 

http://www.digikey.com/product-detail/e ... ow&cur=USD