main.c File Reference

Fm Click example. More...

#include "board.h"
#include "log.h"
#include "fm.h"

Macros
#define	SIGNAL_STRENGTH_LOWER_LIMIT   25

Functions
void	fm_case_plus (fm_t *ctx)
void	fm_case_minus (fm_t *ctx)
void	fm_case_seek (fm_t *ctx)
void	fm_case_tune (fm_t *ctx)
void	fm_case_memorize ()
void	fm_case_mute (fm_t *ctx)
void	fm_case_station_1 (fm_t *ctx)
void	fm_case_station_2 (fm_t *ctx)
void	fm_case_station_3 (fm_t *ctx)
void	fm_case_station_4 (fm_t *ctx)
void	fm_case_station_5 (fm_t *ctx)
void	fm_case_tune_up (fm_t *ctx)
void	fm_case_tune_down (fm_t *ctx)
void	fm_case_wrong_command ()
void	application_init (void)
void	application_task (void)
int	main (void)

Detailed Description

Fm Click example.

Description

This click represent FM radio tuner which supports worldwide FM band (76 – 108 MHz) and has a set of features such as automatic frequency and gain control, seek tuning and volume control.

The demo application is composed of two sections :

Application Init

Initializing I2C driver, powering up device, setting basic settings for Europe, setting values of seek threshold, volume, snr threshold and impulse detection threshold. Seek and memorize 5 radio stations with a signal strength above the set limit.

Application Task

Tunes all memorized stations. Switches the stations each 10 seconds.

Additional Functions

• void fm_case_plus( fm_t *ctx ) - Increases volume
• void fm_case_minus( fm_t *ctx ) - Decreases volume
• void fm_case_seek( fm_t *ctx ) - Seeks next station
• void fm_case_tune( fm_t *ctx ) - Tunes default station
• void fm_case_memorize( ) - Memorizes current station
• void fm_case_station1( fm_t *ctx ) - Tunes memorized station 1
• void fm_case_station2( fm_t *ctx ) - Tunes memorized station 2
• void fm_case_station3( fm_t *ctx ) - Tunes memorized station 3
• void fm_case_station4( fm_t *ctx ) - Tunes memorized station 4
• void fm_case_station5( fm_t *ctx ) - Tunes memorized station 5
• void fm_case_mute( fm_t *ctx ) - Mutes device
• void fm_case_tune_up( fm_t *ctx ) - Fine tunes frequency
• void fm_case_tune_down( fm_t *ctx ) - Fine tunes frequency

Author

MikroE Team

Macro Definition Documentation

SIGNAL_STRENGTH_LOWER_LIMIT

#define SIGNAL_STRENGTH_LOWER_LIMIT   25

Function Documentation

application_init()

void application_init

(

void

)

Logger initialization. Default baud rate: 115200 Default log level: LOG_LEVEL_DEBUG

Note

If USB_UART_RX and USB_UART_TX are defined as HAL_PIN_NC, you will need to define them manually for log to work. See LOG_MAP_USB_UART macro definition for detailed explanation.

application_task()

void application_task

(

void

)

fm_case_memorize()

void fm_case_memorize

(

)

fm_case_minus()

void fm_case_minus

(

fm_t *

ctx

)

fm_case_mute()

void fm_case_mute

(

fm_t *

ctx

)

fm_case_plus()

void fm_case_plus

(

fm_t *

ctx

)

fm_case_seek()

void fm_case_seek

(

fm_t *

ctx

)

fm_case_station_1()

void fm_case_station_1

(

fm_t *

ctx

)

fm_case_station_2()

void fm_case_station_2

(

fm_t *

ctx

)

fm_case_station_3()

void fm_case_station_3

(

fm_t *

ctx

)

fm_case_station_4()

void fm_case_station_4

(

fm_t *

ctx

)

fm_case_station_5()

void fm_case_station_5

(

fm_t *

ctx

)

fm_case_tune()

void fm_case_tune

(

fm_t *

ctx

)

fm_case_tune_down()

void fm_case_tune_down

(

fm_t *

ctx

)

fm_case_tune_up()

void fm_case_tune_up

(

fm_t *

ctx

)

fm_case_wrong_command()

void fm_case_wrong_command

(

)

main()

int main

(

void

)