//---------------------------------------------------------------
// 功能：演示AVR-GCC如何調(diào)用存儲于Flash中的指向函數(shù)的指針 （搖擺燈）
//---------------------------------------------------------------
#include <avr/io.h>
#include
#include
void ledrun(void);
typedef struct
{
void (*pFun)(void);
}Function;
const Function function PROGMEM={ledrun};
void ledrun(void)
{
static unsigned char light_on=0x01;
static unsigned char light_ddr=0;
PORTD=light_on;

if (light_ddr==0)
{
if (light_on==0x80)light_ddr=1;
else light_on<<=1;
}

else
{
if (light_on==0x01)light_ddr=0;
else light_on>>=1;
}

_delay_ms(50);
}

int main(void)
{
PORTD=0;
DDRD=~0;

//void (*pFun)(void) =ledrun;

while (1)
{
//pgm_read_word(&function.pFun);
(*((void(*)(void))pgm_read_word(&function.pFun)))(); //別的沒什么說，關(guān)鍵就在這里了
}

return 0;
}