status_machine(用于状态管理)

一般常用于状态交互

/*	file name	: status_machine.c 
	author		: zhongjun
	description	: status_machine demo
	data		: 20150630
	time		: AM 10:06
	key(study)	: 预处理器 & enum & typedef & struct & malloc & memset
*/

#include <stdio.h>

#define DEBUG_STATUS
#ifdef DEBUG_STATUS
#define DEBUG(x) {printf x;}
#define STATUS_DEBUG(x) DEBUG(x)
#else
#define STATUS_DEBUG(x) 
#endif


typedef enum {
    HF_INITIALISING,	
	HF_READY,
	HF_DISCONNECTING,
	HF_CONNECTING,
	HF_CONNECTED,
	HF_INCOMING_CALL_ESTABLISH,
	HF_OUTGOING_CALL_ESTABLISH,
	HF_ACTIVE_CALL,
	HF_3WAY_CALL_WAITING,
	HF_3WAY_MULTICALL,
	HF_3WAY_CALL_ON_HOLD,
	HF_INCOMING_CALL_ON_HOLD
} AnwHfStateType;

typedef struct
{
    AnwHfStateType		hfpstate ; 
	
	unsigned char		SCO_Link_connect :8;
	unsigned char		answerButton_ChangeTo_Transfer :8;
    
}AnwDeviceManager;



AnwDeviceManager  *devicemanager ;

void SetHfpState ( AnwHfStateType state );
AnwDeviceManager*  GetDeviceManager(void);


int main()
{
	devicemanager = (AnwDeviceManager*)malloc(sizeof(AnwDeviceManager));
	memset(devicemanager, 0, sizeof(AnwDeviceManager));

	devicemanager->hfpstate = HF_READY;
	SetHfpState(HF_CONNECTED);
	return 0;
}


void SetHfpState (AnwHfStateType state)
{
	devicemanager->hfpstate = state; 
	
	STATUS_DEBUG(("Set HfpState (%d)\n", state));
}

AnwDeviceManager*  GetDeviceManager(void)
{
    return devicemanager;
}