gsm-dtu-gr47avr.c

AVR单片机应用开发指南及实例,包含许多实例,挺不错

#include "iom32v.h"
#include <macros.h>
#define         uchar   unsigned char
#define         uint    unsigned int

#define         _SLEEP()	asm("sleep")

//****I/O define*************** 
//GSM
#define         gsm_onoff     4     //PC4     O 
#define         gsm_dtr       4     //PD4     O
#define         gsm_dcd       5     //PD4     I
#define         gsm_txd       0     //PD0     I 
#define         gsm_rxd       1     //PD1     O 
#define         se_sim        7     //PC7     O   0 sim
//date and  time
#define         time_sda      1     //PC1     I/O  
#define         time_scl      0     //PC0     O
#define         time_inta     2     //PD2     I


//uart data
#define         r232_txd       0     //PD0     I 
#define         r232_rxd       1     //PD1     O 
//control   
#define         power_onoff    5     //PC5     O      
#define         r232_onoff     6     //PD6     O      
#define         power_detect   3     //PD4     I     
#define         run_led        6     //PC6     O      
//flash
#define         spi_cs         1     //PB1     O      
#define         spi_rst        3     //PB3     O   
//*****************************

//**********************
//变量  常量定义
#define        wr_device_add        0x64       //时钟器件地址写命令
#define        rd_device_add        0x65       //器件地址读命令

#define   START      0x08 
#define   RE_START   0x10 
#define   MT_SLA_ACK   0x18 
#define   MT_DATA_ACK   0x28 
#define   MR_SLA_ACK   0x40 
#define   MR_DATA_ACK   0x50 
#define   MR_DATA_NAK   0x58 



#define Start()         (TWCR=(1<<TWINT)|(1<<TWSTA)|(1<<TWEN)) 
#define Stop()          (TWCR=(1<<TWINT)|(1<<TWSTO)|(1<<TWEN)) 
#define Wait()           {while(!(TWCR&(1<<TWINT)));} 
#define TestAck()      (TWSR&0xf8) 
#define SetAck()     (TWCR|=(1<<TWEA)) 
#define SetNoAck()    (TWCR&=~(1<<TWEA)) 
#define Twi()          (TWCR=(1<<TWINT)|(1<<TWEN)) 
#define Write8Bit(x)  {TWDR=(x);TWCR=(1<<TWINT)|(1<<TWEN);}  


#define    F_READ_STATUS_CMD                   0xD7       //STATUS_READ
#define    F_WRITE_BUFFER1_CMD                 0x84       //write buffer1
#define   F_WRITE_BUFFER2_CMD                  0x87       //write buffer2
#define   F_READ_BUFFER1_CMD                   0x54       //READ BUFFER1
#define   F_READ_BUFFER2_CMD                   0x56       //READ BUFFER2
#define   F_WRITE_BUFFER1_TO_Page_CMD          0x83       //write buffer1 to page
#define   F_WRITE_BUFFER2_TO_Page_CMD          0x86       //write buffer2 to page
#define   F_READ_Page_TO_BUFFER1_CMD           0x53       //read main to buffer1
#define   F_READ_Page_TO_BUFFER2_CMD           0x55       //read main to buffer2
#define   F_READ_PAGE_CMD                      0x52       //directly from main to ram
#define   F_BUFFER_NUMBER1                     0x01       //


uchar   gsm_ok_flag=0;      //GSM 响应标志   0  无响应  1 有响应
uchar   gsm_init_flag=0;    //GSM初始化标志  0   1 成功

uchar   data_buffer[116];
const uchar   default_info_buffer[116]={'A','V','R','G','S','M',
        '0','0','0','0','0','0','0','0','0','0','0',',',
        '0','0','0','0','0','0','0','0','0','0','0',',',
        '0','0','0','0','0','0','0','0','0','0','0',';',
        'C','E','N',
        '0','0','0','0','0','0','0','0','0','0','0',',',
        '0','0','0','0','0','0','0','0','0','0','0',',',
        '0','0','0','0','0','0','0','0','0','0','0',';',
        'S','I','M',
        '0','0','0','0','0','0','0','0','0','0','0',';',
        'S','E','T',
        '0','0','9','6','0','0',',','N',',','8',',','1',';','C','O','N','1'
                };
         //eeprom  存储的仪表读数地址  从地址130 开始, 每组数据需要30字节,共15组堆栈式的缓存
         //数据记录的格式:
         // 记录时间(6byte)+data1(7byte)+data2(7byte)+data3(7byte)+battstatus(1byte)+20h+20h  
const   uint   meter_data_eeprom_start_addr[15]={
	130,160,190,220,250,280,310,340,370,400,
        430,460,490,520,550};             
  
uint     eeprom_data_addr;      //eeprom 数据首地址  从上面的表读出的值，供读写eeprom用
uchar    data_save_No;      //存放数据顺序,从0,14  当值为15以上时候，则自动变0      
uchar    need_send_data_No_1=0;    //定时发送中心数据顺序
uchar    need_send_data_No_2=0;
uchar    need_send_data_No_3=0;
uchar    need_send_data_No_4=0;
uchar    need_send_data_No_5=0;
uchar    need_send_data_No_6=0;
//  
uchar    data_from_eeprom[120];   //从EEPROM 读出四个30字节的数据缓存。为定点发送数据到中心用。
uchar    need_send_data_No[26];   //       
uchar    eeprom_data_addr_No;      
uchar    info_buffer[200];        //接收短信的内容  从86开始
uchar    data_temp_buffer[200];   //从内存中读出4个30字节数据保存临时缓冲
uchar    data_temp_buffer1[200];        //把二进制转换为ASCII后存储临时缓冲
uchar    data_temp_buffer2[200];      //
//uchar    data_temp_buffer3[200];      //
ready_cen2_data_1[135];
ready_cen2_data_2[135];
ready_cen2_data_3[135];
uchar    data_temp;
uchar    info_lenght=0x00;     //接收信息的长度
uchar    data_length=0x00;
uchar    data_lengh_temp;
uchar    gsm_send_length=0x00; //发送短信字符内容个数
uchar    time_reg;
uchar    info_gsm_rx_flag=0;    //接收短信成功标志   1 成功
uchar    info_meter_rx_flag=0;  //接收外部仪表信息标志  1 成功
 const  uchar   default_time[14]={'2','0','0','8','0','8','0','8','0','8','0','8','0','8'};
 uchar    now_time[12];
 uchar    now_time_hex[6];
 uchar   gsm_rx_time[17];   //接收短信时间  08/07/22,00:55:45
 uchar   rx_mobile_num[11]={'1','3','8','0','0','1','3','8','0','0','0'};  //收短信目标手机号
 uchar    tx_mobile_num[11]={'1','3','8','0','0','1','3','8','0','0','0'};   //发短信目标手机号
  //参数缓存
 uchar    mas_mobile_num[33]; //管理员手机号(从EEPROM读出临时用)
 uchar    cen_mobile_num[33];// 数据中心手机号(从EEPROM读出临时用)
 uchar    me_mobile_num[11];  //本模块使用的SIM号(从EEPROM读出临时用)
 uchar    baut_rate_num[6];   //波特率     009600, 
 uchar    n_o_e_flag;       //N,  O , E 
 uchar    uart_byte_num;    //8,7
 uchar    uart_stop_num;    //1,2
 uchar    me_now_status;    //1,0     本模块通讯状态   1 常开  0 定时
 
 uchar    batt_status;       //电池状态  0  正常    1低压
 uchar    checksum  ;       //校验和
 uint     delay_num;        //延时常数 ,用于GD&   50us*delay_num  
 uchar    data_save_sequence_num;
 
//eeprom参数设置内容AVRGSM......CON1   共116个字符保存在EEPROM内容中0x05开始的
//eeprom参数有无设置标志，EEPROM中，0x02  (0xd9表示设置过,否则表示没设置过)
//eeprom存放数据顺序是在0x03  内容为0~14, 如果是其它值则马上写为0。

//外部仪表数据缓存
uchar meter_rx_a_buffer1[7];
uchar meter_rx_a_buffer2[7];
uchar meter_rx_a_buffer3[7];

///子程序

/*UART0---外部设备 初始化*/	
void uart_out_init(void)
 {
 UCSRB=0xd8; //11011000   接收和发送中断，接收和发送使能
 UBRRL=23  ;//   23   9600   //(fosc/16/(baud+1))%256;
 UBRRH=0x00  ; //  (fosc/16/(baud+1))/256;
 UCSRC=0x86 ; //
 }

/* 延时us 子程序 */
void delay_us(int time)             //us  delay
	 {     
  	  do
	  	{
	  	 
		 time--;
		}	
  	  while (time>1);
	 }	

/*延时ms子程序 ms delay */	 
void delay_ms(unsigned int time)
	 {
	  while(time!=0)
	  	  {
	  	   WDR();			
		   delay_us(500);
		   time--;
		  }
         }


//iic 初始化
void  iic_init(void)
      {
      TWSR=00;
      TWBR=0x16;     //50K
      }
//I/O口方向初始化
void  io_init(void)
      {
    DDRA=0x00;  
    DDRB=0xCA;                   
    DDRC=0xF1;
    DDRD=0x52;
      }

//内部EEPROM操作子程序
void EEPROM_write(unsigned int uiAddress, unsigned char ucData)
 {
/* 等待上一次写操作结束*/
while(EECR & (1<<EEWE));

/* 设置地址和数据寄存器*/
EEAR = uiAddress;
EEDR = ucData;
/* 置位EEMWE */
EECR |= (1<<EEMWE);
/* 置位EEWE 以启动写操作E */
EECR |= (1<<EEWE);
   
 } 
unsigned char EEPROM_read(unsigned int uiAddress)
 {/* 等待上一次写操作结束*/
while(EECR & (1<<EEWE))
;
/* 设置地址寄存器*/
EEAR = uiAddress;
/* 设置EERE 以启动读操作*/
EECR |= (1<<EERE);
/* 自数据寄存器返回数据*/
return EEDR; 
   
 }  
//外部
void USART0_Transmit( unsigned char data )
{
/* 等待发送缓冲器为空*/
   PORTC |=(1<<se_sim);          //选通
       delay_us(100);
                     do
                     {
                     WDR();	
                     }
                   while ( !( UCSRA & (1<<UDRE)) );



/* 将数据放入缓冲器，发送数据*/
UDR = data;
}
//GSM
void USART1_Transmit( unsigned char data )
{
/* 等待发送缓冲器为空*/
       PORTC &=~(1<<se_sim);          //选通
       delay_us(100);
                    do
                     {
                     WDR();	
                     }
while ( !( UCSRA & (1<<UDRE)) );

/* 将数据放入缓冲器，发送数据*/
UDR = data;
}

//关闭看门狗
void WDT_off(void)
{
/* 置位WDCE 和WDE */
WDTCR = (1<<WDCE) | (1<<WDE);
/* 关闭WDT */
WDTCR = 0x00;
}

//SPI  初始化
void  spi_init(void)
{
 SPCR=0x51;   //
 SPSR=0x00;   //   
}
/****************************************** 
               I2C总线写一个字节 
             返回0:写成功 
            返回非0:写失败 
*******************************************/ 
unsigned char i2c_Write(unsigned char Wdata,unsigned int RomAddress)  
{ 
  
     Start();//I2C启动 
     Wait(); 
     if(TestAck()!=START) return 1;//ACK 
     Write8Bit(wr_device_add);//写I2C从器件地址和写方式 
     Wait(); 
     if(TestAck()!=MT_SLA_ACK) return 1;//ACK 
      
     Write8Bit(RomAddress);//写地址 
     Wait(); 
     if(TestAck()!=MT_DATA_ACK) return 1;//ACK 
      
     Write8Bit(Wdata);//写数据
     Wait(); 
     if(TestAck()!=MT_DATA_ACK) return 1;//ACK    
      
     Stop();//I2C停止 
     WDR();
     delay_ms(10);//延时等EEPROM写完 
     return 0; 
} 
/****************************************** 
               I2C总线读一个字节 
            如果读失败也返回0 
*******************************************/ 
unsigned char i2c_Read(unsigned int RomAddress)  
{ 
      unsigned char temp; 
  
      Start();//I2C启动 
      Wait(); 
      if (TestAck()!=START) return 0;//ACK       
      Write8Bit(wr_device_add);//写I2C从器件地址和写方式 
      Wait();  
      if (TestAck()!=MT_SLA_ACK) return 0;//ACK 
       
     // P--; 
      Write8Bit(RomAddress);//写地址 
      Wait(); 
      if (TestAck()!=MT_DATA_ACK) return 0; 
       
  
      Start();//I2C重新启动 
      Wait(); 
      if (TestAck()!=RE_START)  return 0; 
      Write8Bit(rd_device_add);//写I2C从器件地址和读方式 
      Wait(); 
      if(TestAck()!=MR_SLA_ACK)  return 0;//ACK 
      Twi();//启动主I2C读方式 
      Wait(); 
      if(TestAck()!=MR_DATA_NAK) return 0;//ACK    
       
      temp=TWDR;//读取I2C接收数据 
       Stop();//I2C停止 
       WDR();