#include "Sim900a.h"

void DelaySec(int sec)
{
	unsigned int i , j= 0;
	for(i=0; i<sec; i++)
	{
		for(j=0; j<65535; j++)
		{
		}
	}
}

int SIM900aAnswer(const char *restrict)//�ȴ�SIM900a��Ӧ��
{
	u16 len,t;
	printf(restrict);
	DelaySec(2);
	if(USART_RX_STA&0x8000)
	{					   
			len=USART_RX_STA&0x3fff;//�õ��˴ν��յ������ݳ���
			for(t=0;t<len;t++)
			{
				if(USART_RX_BUF[t]=='O'&&USART_RX_BUF[t+1]=='K')
				{
				   return 0;
				}
			}
			 USART_RX_STA=0;
			 return 1;
	}
	else
	{
		return 1;
	}
}

int SIM900aSendPhone(const char *restrict)//�ȴ�SIM900a��Ӧ��
{
	u16 len,t;
	printf(restrict);
	DelaySec(2);
	if(USART_RX_STA&0x8000)
	{					   
			len=USART_RX_STA&0x3fff;//�õ��˴ν��յ������ݳ���
			for(t=0;t<len;t++)
			{
				if(USART_RX_BUF[t]==0x3E)
				{
					 USART_RX_STA=0;
           memset(USART_RX_BUF,0,USART_REC_LEN);
				   return 0;
				}
			}
			 USART_RX_STA=0;
			 memset(USART_RX_BUF,0,USART_REC_LEN);
			 return 1;
	}
	else
	{
		return 1;
	}
}


int SIM900aSendPhoneAnswer(const char *restrict)//�ȴ�SIM900a��Ӧ��
{
	u16 len,t;
	printf(restrict);
	DelaySec(2);
	USART_SendData(USART1, 0x1a);
	DelaySec(2);
	if(USART_RX_STA&0x8000)
	{					   
			len=USART_RX_STA&0x3fff;//�õ��˴ν��յ������ݳ���
			for(t=0;t<len;t++)
			{
				if(USART_RX_BUF[t]=='O'&&USART_RX_BUF[t+1]=='K')
				{
					 USART_RX_STA=0;
           memset(USART_RX_BUF,0,USART_REC_LEN);
				   return 0;
				}
			}
			 USART_RX_STA=0;
			 memset(USART_RX_BUF,0,USART_REC_LEN);
			 return 1;
	}
	else
	{
		return 1;
	}
}

void SIM900aInit(void)//SIM900a�ij�ʼ��
{
	SIM900aAnswer("AT+CMGF=1\r\n");
	USART_RX_STA=0;

	SIM900aAnswer( "AT+CSCS=\"GSM\"\r\n");
	USART_RX_STA=0;
	
	SIM900aAnswer("AT+CSMP=17,167,0,240\r\n");
	//SIM900aAnswer("AT+CSMP=17,167,2,25\r\n");
	USART_RX_STA=0;

	SIM900aAnswer("AT+CMGD=1\r\n");
	USART_RX_STA=0;
	
	delay_ms(1000);
}

void SIM900aSend(char* str)
{
	SIM900aAnswer("AT+CMGS=\"11111111111\"\r\n");
	USART_RX_STA=0;
	DelaySec(2);
	SIM900aAnswer(str);
	USART_SendData(USART1,0x1a);
	USART_RX_STA=0;
}