test.c

美国模拟混合器件领导厂商Silabs 芯科实验室 收音机系列 源码

//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include <stddef.h>       
#include "typedefs.h"
#include "example.h"
#include "c8051F320.h"

//-----------------------------------------------------------------------------
// Defines
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// Global variables
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// Function prototypes
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// Externals
//-----------------------------------------------------------------------------
extern u16 seek_preset[];
extern u16 xdata RdsDataAvailable;






//-----------------------------------------------------------------------------
// Simple routine that tests the si470x driver functions.
// 
// This particular test just:
//	- Resets Si470x
//	- Sets default values and takes the Si470x out of powerdown mode
//	- Waits for agc to settle
//  - Fills the preset array with the strongest stations found
//  - Loops through each preset pausing on each one 
//
//-----------------------------------------------------------------------------
void test_autoseek(void)
{
	u16 preset_freq;
	u8 preset_number;
	
	si470x_reset();
        si470x_initialize();
	si470x_set_volume (0xf, 1);  // full volume, turn off mute
	
 	wait_ms(2500);		// let agc settle after powerup before performing autoseek
                     // only required for rev10 and earlier

	si470x_autoseek();		// populate the preset array with strongest stations

	_nop_();    	// break here to inspect preset array

	preset_number = 0;
	while (1) {
        // tune to the next station in the preset array
        preset_freq = seek_preset[preset_number];
		if (preset_freq != 0) {
			si470x_tune (preset_freq);
	 		wait_ms(5000);		
	   	}
        
        // put the device in powerdown mode, wait, then powerup again
        si470x_powerdown();
        wait_ms(2000);         
        si470x_powerup();
        
        preset_number ++;
		if (preset_number == NUM_SEEK_PRESETS )
			preset_number = 0;
	}		   
}	


//-----------------------------------------------------------------------------
//
//
//
//
//-----------------------------------------------------------------------------
void test_rds(void)
{
    
    si470x_reset();
    si470x_initialize();
    si470x_set_volume (0xf, 1);  // full volume, turn off mute
    si470x_tune(10230);          // tune to a station

    initRds();                  // Initialize RDS

	while (1)
	{
		wait_gpio2(0);
		updateRds();
		wait_gpio2(1);
	}
}