📄 example_dps2812m_rtc.c

📁 代码是北京合众达公司提供的TMS320F2812的例子程序
💻 C
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/* =================================================================================
File name:       	Example_DPS2812M_DA.C                    
                    
Originator:				SEED R&D Group
		
Description: 
                  DPS2812M Device Digital to RTC test program. 
=====================================================================================
 History:
-------------------------------------------------------------------------------------
 10-20-2005		Release	Rev 1.0         Jijunhui                                          
------------------------------------------------------------------------------*/

#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
#include "DSP281x_Examples.h"   // DSP281x Examples Include File
#include "Example_DPS2812M_RTC.h"

unsigned int RTC_Status,RTC_Date,RTC_Year,RTC_Month,RTC_Day,RTC_Hour,RTC_Minute,RTC_Second;
unsigned int i1,RTC_DATA[64];

void main(void)
{
	//初始化变量
	//InitVariable();
	//初始化系统
	
	InitSysCtrl();
	// Disable and clear all CPU interrupts:
	DINT;
	IER = 0x0000;
	IFR = 0x0000;

	//初始化PIE控制
	InitPieCtrl();
	//初始化PIE参数表
	InitPieVectTable();	
	//初始化外设
	//InitPeripherals();
	init_rtc();

	 //设置PE02为SDA输出
  
	//设置RTC时钟
	//初始化时编译这条指令，以后读时，可以不用这条指令
	Set_Rtc(1,0x03,0x11,0x17,0x12,0x30,0x51);
	
  for(i1 = 0; i1 < 64; i1++)
  {
  	RTC_DATA[i1] = i1;
  }
  Page_Write_Eeprom(0,0,&RTC_DATA[0],64);
  Page_Read_Eeprom(0,0,64);
  for(i1 = 0; i1 < 64; i1++)
  {
  	if(Read_Rtc_Data(0xae,0xaf,0,i1) != i1)
		{
			while(1);
		}
  }
  //开中断
	EINT;   // Enable Global interrupt INTM
	ERTM;	// Enable Global realtime interrupt DBGM
	for(;;)
	{
		KickDog();
		RTC_Status = Read_Rtc_Data(0xde,0xdf,0,0x3f);
		RTC_Date = Read_Rtc_Data(0xde,0xdf,0,0x36);
		RTC_Year = Read_Rtc_Data(0xde,0xdf,0,0x35);
		RTC_Month = Read_Rtc_Data(0xde,0xdf,0,0x34);
		RTC_Day = Read_Rtc_Data(0xde,0xdf,0,0x33);
		RTC_Hour = Read_Rtc_Data(0xde,0xdf,0,0x32);
		RTC_Minute = Read_Rtc_Data(0xde,0xdf,0,0x31);
		RTC_Second = Read_Rtc_Data(0xde,0xdf,0,0x30);
	}
} 

void init_rtc(void)
{
    *IIC_SCL_OUT = 1;
	Set_Delay(200);
	*IIC_SDA_DIR = 0;
//	*IIC_SCL_DIR = 0;
	Set_Delay(200);
	*IIC_SCL_OUT = 0;
	Set_Delay(200);
	*IIC_SDA_OUT = 1;
	Set_Delay(200);
//	Byte_Write(0xde,0,0x11,0x08);
//	Set_Rtc(1,0x03,0x11,0x17,0x12,0x30,0x15);

//	Byte_Write(0xde,0,0x11,0x08);
//	Set_Rtc(1,0x03,0x11,0x17,0x12,0x30,0x15);
}

void Set_Rtc(unsigned int date,unsigned int year,unsigned int month,unsigned int day,unsigned int hour,unsigned int minute,unsigned int second)
{
	unsigned int i;
	/*写WEL*/
	Write_WEL();
	/*写RWEL*/
	Write_RWEL();
	/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(0xde);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 1*/
	Write_Rtc(0);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 0*/
	Write_Rtc(0x30);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写DATE*/
	Write_Rtc(second);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写YEAR*/
	Write_Rtc(minute);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写MONTH*/
	Write_Rtc(hour);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写DAY*/
	Write_Rtc(day);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写HOUR*/
	Write_Rtc(month);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写MINUTE*/
	Write_Rtc(year);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写SECOND*/
	Write_Rtc(date);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写停止位*/
	Write_Stop_bit();
	Reset_Status();
}

void Set_Delay(unsigned int Delay_Num)
{
	int i;
	for(i = 0; i <= Delay_Num; i++)
	{
		asm(" NOP");
	}
}

void Write_Start_bit(void)
{
	*IIC_SDA_DIR = 0;
	*IIC_SDA_OUT = 1;
	Set_Delay(200);
	*IIC_SCL_OUT = 1;
	Set_Delay(200);
	*IIC_SDA_OUT = 0;
	Set_Delay(200);
	*IIC_SCL_OUT = 0;
	Set_Delay(200);
}

void Write_Stop_bit(void)
{
	*IIC_SDA_DIR = 0;
	*IIC_SDA_OUT = 0;
	Set_Delay(200);
	*IIC_SCL_OUT = 1;
	Set_Delay(200);
	*IIC_SDA_OUT = 1;
	Set_Delay(200);
	*IIC_SCL_OUT = 0;
	Set_Delay(200);
}

void Write_WEL(void)
{
	unsigned int i;
	*IIC_SDA_DIR = 0;
	/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(0xde);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 1*/
	Write_Rtc(0);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 0*/
	Write_Rtc(0x3f);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写DATE*/
	Write_Rtc(0x02);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写停止位*/
	Write_Stop_bit();
	/*复位*/
//	Reset_Status();
}

void Write_RWEL(void)
{
	unsigned int i;
	*IIC_SDA_DIR = 0;
	/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(0xde);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 1*/
	Write_Rtc(0);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 0*/
	Write_Rtc(0x3f);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写DATE*/
	Write_Rtc(0x06);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写停止位*/
	Write_Stop_bit();
}

void Reset_Status(void)
{
	unsigned int i;
	*IIC_SDA_DIR = 0;
	/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(0xde);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 1*/
	Write_Rtc(0);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 0*/
	Write_Rtc(0x3f);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写DATE*/
	Write_Rtc(0x0);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写停止位*/
	Write_Stop_bit();
}

void Write_Rtc(unsigned int Rtc_Var)
{
	int i;
	*IIC_SDA_DIR = 0;
	for(i = 7; i >= 0; i--)
	{
		*IIC_SDA_OUT = (Rtc_Var >> i) & 1;
		Set_Delay(200);
		*IIC_SCL_OUT = 1;
		Set_Delay(200);
		*IIC_SCL_OUT = 0;
		Set_Delay(200);
	}
}

unsigned int Read_Rtc_ACK(void)
{
	unsigned int i;
	*IIC_SDA_DIR = 1;
	Set_Delay(200);
	*IIC_SCL_OUT = 1;
	Set_Delay(200);
	i = *IIC_SDA_IN&1;
	Set_Delay(200);
	*IIC_SCL_OUT = 0;
	Set_Delay(200);
	return(i);
}

void Write_Rtc_ACK(void)
{
	*IIC_SDA_DIR = 0;
	*IIC_SDA_OUT = 0;
	Set_Delay(200);
	*IIC_SCL_OUT = 1;
	Set_Delay(200);
	*IIC_SCL_OUT = 0;
	Set_Delay(200);
}

unsigned int Read_Rtc_Data(unsigned int slave_address1,unsigned int slave_address0,unsigned int address1,unsigned int address0)
{
	unsigned int i,j,var1[8];
	/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(slave_address1);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 1*/
	Write_Rtc(address1);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 0*/
	Write_Rtc(address0);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(slave_address0);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*读DATA*/
	*IIC_SDA_DIR = 1;
	j = 0;
	for(i = 0; i < 8; i++)
	{
		*IIC_SCL_OUT = 1;
		Set_Delay(200);
		var1[i] = *IIC_SDA_IN&1;
		j = j | (var1[i] << (7 - i));
		Set_Delay(200);
		*IIC_SCL_OUT = 0;
		Set_Delay(200);
	}
	/*写停止位*/
	Write_Stop_bit();
	return(j);
}

void Page_Read_Eeprom(unsigned int address1,unsigned int address0,unsigned int length)
{
	unsigned int i,j,k,var1[8];
	/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(0xae);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 1*/
	Write_Rtc(address1);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 0*/
	Write_Rtc(address0);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(0xaf);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	*IIC_SDA_DIR = 1;
	k = 0;
	for(i = 0; i < 8; i++)
	{
		*IIC_SCL_OUT = 1;
		Set_Delay(200);
		var1[i] = *IIC_SDA_IN&1;
		k = k | (var1[i] << (7 - i));
		Set_Delay(200);
		*IIC_SCL_OUT = 0;
		Set_Delay(200);
	}
	RTC_ReadData[0] = k;
	/*读DATA*/
	for(j = 1; j < length; j++)
	{
		/*写ACK应答*/
		Write_Rtc_ACK();
		*IIC_SDA_DIR = 1;
		k = 0;
		for(i = 0; i < 8; i++)
		{
			*IIC_SCL_OUT = 1;
			Set_Delay(200);
			var1[i] = *IIC_SDA_IN&1;
			k = k | (var1[i] << (7 - i));
			Set_Delay(200);
			*IIC_SCL_OUT = 0;
			Set_Delay(200);
		}
		RTC_ReadData[j] = k;
	}
	/*写停止位*/
	Write_Stop_bit();
}

void Byte_Write(unsigned int Slave_Address,unsigned int address1,unsigned int address0,unsigned int data)
{
	unsigned int i;
		/*写WEL*/
	Write_WEL();
	/*写RWEL*/
	Write_RWEL();
	/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(Slave_Address);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 1*/
	Write_Rtc(address1);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 0*/
	Write_Rtc(address0);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写DATE*/
	Write_Rtc(data);
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写停止位*/
	Write_Stop_bit();
}

void Byte_Write_Eeprom(unsigned int address1,unsigned address0,unsigned int data)
{
	/*写WEL*/
	Write_WEL();
	/*写RWEL*/
	Write_RWEL();
	/*写EEPROM*/
	Byte_Write(0xae,address1,address0,data);
	/*延时10MS*/
	Delay_10ms();
	/*清STATUS*/
	Reset_Status();
}

void Page_Write_Eeprom(unsigned int address1,unsigned int address0,unsigned int *data,unsigned int length)
{
	unsigned int i,j;
	/*写WEL*/
	Write_WEL();
	/*写RWEL*/
	Write_RWEL();
		/*写开始位*/
	Write_Start_bit();
	/*写SLAVE BYTE*/
	Write_Rtc(0xae);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 1*/
	Write_Rtc(address1);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	/*写WORD ADDRESS 0*/
	Write_Rtc(address0);	
	/*读ACK应答*/
	i = Read_Rtc_ACK();
	if(i == 1)
	{
		while(1);
	}
	for(j = 0; j < length; j++)
	{
		/*写DATE*/
		Write_Rtc(*(data+j));
		/*读ACK应答*/
		i = Read_Rtc_ACK();
	}
	/*写停止位*/
	Write_Stop_bit();
	/*延时10MS*/
	Delay_10ms();
	/*清STATUS*/
	Reset_Status();
}

void Delay_10ms(void)
{
	unsigned int i;
	for(i = 0; i < 10000; i++)
	{
		Set_Delay(200);
	}
}
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