htd30v02.c

利用单片机实现的USB1.1通信。通过液晶屏的显示驱动代码

	}
void	delay_50us(void)
	{
	uchar	i;
	for(i=0;i<12;i++)
		nop5();
	}

//让FLASH进入读待命状态
void	flash_reset_read(void)
	{
	flash_high_add=0;
	flash_mid_add=0xaa;
	flash_low_add=0xaa;
	write_flash_byte(0xaa);
	flash_high_add=0;
	flash_mid_add=0x55;
	flash_low_add=0x54;
	write_flash_byte(0x55);
	flash_high_add=0;
	flash_mid_add=0xaa;
	flash_low_add=0xaa;
	write_flash_byte(0xf0);
	}
//wait flash status reg
uchar	read_flash_srd(void)
	{
	uchar	temp1;
//first cycle
	flash_high_add=0;
	flash_mid_add=0xaa;
	flash_low_add=0xaa;
	write_flash_byte(0xaa);
//second cycle
	flash_high_add=0;
	flash_mid_add=0x55;
	flash_low_add=0x54;
	write_flash_byte(0x55);
//third cycle
	flash_high_add=0;
	flash_mid_add=0xaa;
	flash_low_add=0xaa;
	write_flash_byte(0x70);
//forth cycle
	temp1=read_flash_byte();
	temp1&=0xf8;
	return(temp1);
	}
void	clear_srd(void)
	{
//first cycle
	flash_high_add=0;
	flash_mid_add=0xaa;
	flash_low_add=0xaa;
	write_flash_byte(0xaa);
//second cycle
	flash_high_add=0;
	flash_mid_add=0x55;
	flash_low_add=0x54;
	write_flash_byte(0x55);
//third cycle
	flash_high_add=0;
	flash_mid_add=0xaa;
	flash_low_add=0xaa;
	write_flash_byte(0x50);
	}
//erase chip
bit	erase_flash(void)
	{
	uchar	i;
	i=3;
	while(i--)
		{
//first cycle
		flash_high_add=0;
		flash_mid_add=0xaa;
		flash_low_add=0xaa;
		write_flash_byte(0xaa);
//second cycle
		flash_high_add=0;
		flash_mid_add=0x55;
		flash_low_add=0x54;
		write_flash_byte(0x55);
//third cycle
		flash_high_add=0;
		flash_mid_add=0xaa;
		flash_low_add=0xaa;
		write_flash_byte(0x80);
//forth cycle
		flash_high_add=0;
		flash_mid_add=0xaa;
		flash_low_add=0xaa;
		write_flash_byte(0xaa);
//fifth cycle
		flash_high_add=0;
		flash_mid_add=0x55;
		flash_low_add=0x54;
		write_flash_byte(0x55);
//sixth cycle
		flash_high_add=0;
		flash_mid_add=0xaa;
		flash_low_add=0xaa;
		write_flash_byte(0x10);

		delay_100us();
		if(read_flash_srd()==0x80)
			return(0);
		}
	clear_srd();
	return(1);
	}
//erase sector
bit	erase_sector(uchar sector_add)
	{
	uchar	i;
	i=3;
	while(i--)
		{
//first cycle
		flash_high_add=0;
		flash_mid_add=0xaa;
		flash_low_add=0xaa;
		write_flash_byte(0xaa);
//second cycle
		flash_high_add=0;
		flash_mid_add=0x55;
		flash_low_add=0x54;
		write_flash_byte(0x55);
//third cycle
		flash_high_add=0;
		flash_mid_add=0xaa;
		flash_low_add=0xaa;
		write_flash_byte(0x80);
//forth cycle
		flash_high_add=0;
		flash_mid_add=0xaa;
		flash_low_add=0xaa;
		write_flash_byte(0xaa);
//fifth cycle
		flash_high_add=0;
		flash_mid_add=0x55;
		flash_low_add=0x54;
		write_flash_byte(0x55);
//sixth cycle
		flash_high_add=sector_add*2;
		flash_mid_add=0xaa;
		flash_low_add=0xaa;
		write_flash_byte(0x30);

		delay_100us();
		if(read_flash_srd()==0x80)
			return(0);
		}
	clear_srd();
	return(1);
	}

//write flash page 1
//void	write_page(void)
//	{
//	uchar	i,k;
//	data	union
//		{
//		uchar	target_byte[2];
//		uint		target_word;
//		}address_flash;
//	EA=0;
//	flash_high_add=0;
//	flash_mid_add=0xaa;
//	flash_low_add=0xaa;
//	write_flash_byte(0xaa);
//	flash_high_add=0;
//	flash_mid_add=0x55;
//	flash_low_add=0x54;
//	write_flash_byte(0x55);
//	flash_high_add=0;
//	flash_mid_add=0xaa;
//	flash_low_add=0xaa;
//	write_flash_byte(0xa0);
//	flash_high_add=flash_address.flash_byte.page_MSB/2;
//	flash_mid_add=(flash_address.flash_byte.page_MSB<<7)+(flash_address.flash_byte.page_LSB/2);
//	flash_low_add=(flash_address.flash_byte.page_LSB<<7);
//	SEL_OTHERS=1;
//	mirror_377&=0xe0;
//	mirror_377+=flash_high_add;
//	sel_hc377=mirror_377;
//	SEL_OTHERS=0;
//	address_flash.target_byte[0]=flash_mid_add;
//	address_flash.target_byte[1]=flash_low_add;
//	for(i=0;i<128;i++)
//		{
//		k=flash_buf[i];
//		set_extram;
//		XBYTE[address_flash.target_word]=k;
//		clr_extram;
//		address_flash.target_byte[1]++;
//		}
//	delay_100us();
//	while(read_flash_srd()!=0x80)
//		{
//		}
//	EA=1;
//	}
//////void	flash_error1(void)
//////	{
//////	while(1)		//send message to display
//////		{
//////		}
//////	}
//void	read_page(void)		//将flash_address.flash_page地址的整个页面读到flash_buf
//	{
//	uchar	i;
//	uchar	temp1;
//	data	union
//		{
//		uchar	target_byte[2];
//		uint		target_word;
//		}address_flash;
////	clear_srd();
////read page0  of flash
//	while(read_flash_srd()!=0x80)
//		{
//		}
//	flash_high_add=0;
//	flash_mid_add=0xaa;
//	flash_low_add=0xaa;
//	write_flash_byte(0xaa);
//	flash_high_add=0;
//	flash_mid_add=0x55;
//	flash_low_add=0x54;
//	write_flash_byte(0x55);
//	flash_high_add=0;
//	flash_mid_add=0xaa;
//	flash_low_add=0xaa;
//	write_flash_byte(0xf0);
//	flash_high_add=flash_address.flash_byte.page_MSB/2;
//	flash_mid_add=(flash_address.flash_byte.page_MSB<<7)+(flash_address.flash_byte.page_LSB/2);
//	flash_low_add=(flash_address.flash_byte.page_LSB<<7);
//	address_flash.target_byte[0]=flash_mid_add;
//	address_flash.target_byte[1]=flash_low_add;
//	SEL_OTHERS=1;
//	mirror_377&=0xe0;
//	mirror_377+=flash_high_add;
//	sel_hc377=mirror_377;
//	SEL_OTHERS=0;
//	for(i=0;i<128;i++)
//		{
//		set_extram;
//		temp1=XBYTE[address_flash.target_word];
//		clr_extram;
//		flash_buf[i]=temp1;
//		address_flash.target_byte[1]++;
//		}
//	}
void	uart_same_way(void)
	{
	uart_sendhead++;
	send_ok=0;
//	TI=1;
	ACC=com1_send_buf[0];
	TB8=(~P);	//清时间，定时发送数据
	SBUF=com1_send_buf[0];
	uart_sendtail++;
	while(send_ok==0)
		{
		}
	}
void	make_checksum1(void)
	{
	uchar	i;
	for(i=0;i<uart_sendhead;i++)
		checksum_send^=com1_send_buf[i];
	}
void start_checksum1(void)
	{
	checksum_send=0;
	make_checksum1();
	}
void	return_uart(void)
	{
	com1_send_buf[0]=0x55;
	com1_send_buf[1]=0x7a;
	com1_send_buf[2]=order_name;
	com1_send_buf[5]=0xff;
	}
void make_checksum_send(void)
	{
	start_checksum1();
	com1_send_buf[uart_sendhead]=checksum_send;
	uart_same_way();
	}
void	uart_same_response(void)
	{
	com1_send_buf[3]=0x00;
	return_uart();
	make_checksum_send();
	}
void	uart_response_right(void)
	{
	com1_send_buf[4]=0x00;
	uart_sendhead=6;
	uart_same_response();
	}
void	calculate_distance(void)			//计算当前的累计里程数,HEX结果存放在distance.distance_long中
	{
	add_start.add_word=LAST_DISTANCE;	//取出最后上电当时的里程示数
	fm_read(distance.distance_byte,4);
	distance.distance_long+=(day_pulse*20+1)/km_pulse.km_word/2;	//求出现在的里程并保存
	add_start.add_word=NOW_DISTANCE;
	fm_write(distance.distance_byte,4);
	}
void	convert_long(void)			//将tempe.temp_long 的HEX里程数转化为BCD格式的存放在EEP_BUF中
	{
	uint		word_shang,word_yu;
	uchar	byte_shang_shang,byte_shang_yu,byte_yu_shang,byte_yu_yu;
//	tempe.temp_long=distance.distance_long;
	word_shang=tempe.temp_long/10000;
	word_yu=tempe.temp_long%10000;
	byte_shang_shang=word_shang/100;
	byte_shang_yu=word_shang%100;
	byte_yu_shang=word_yu/100;
	byte_yu_yu=word_yu%100;
	eep_buf[0]=byte_shang_shang/10;
	eep_buf[1]=byte_shang_shang%10;
	eep_buf[2]=byte_shang_yu/10;
	eep_buf[3]=byte_shang_yu%10;
	eep_buf[4]=byte_yu_shang/10;
	eep_buf[5]=byte_yu_shang%10;
	eep_buf[6]=byte_yu_yu/10;
	eep_buf[7]=byte_yu_yu%10;
	}
uchar	test_symbol(uint address_symbol)
	{
	uchar	temp_a;
	add_start.add_word=address_symbol;
	fm_read(&temp_a,1);
	return(temp_a==0xaa);
	}
void send1_without_checksum(void)
	{
	start_checksum1();
	uart_sendhead--;
	uart_same_way();
	}

//////////////////////////////////////////////////////////////////////
//函数名：
//创建者：templa
//创建时间：2005年03月16日05时45分

//函数体中要使用的全局变量：head_local/head_tail/hour_number/flash_address
//函数体中要使用的临时变量：temp_local

//函数功能：得到要被传送的数据的第一个页面的位置，如果头在EEP中head_local=0，在FLASH中，head_local=1，
//而head_tail的作用表示是在页面的前部还是后部，=1为后部/=0为前部
void	judge_local_hour(void)
	{
        uint    temp_local;
	uchar	i;
//如果当前小时已经有分钟速度了就需要将其作为最后的数据
	head_local=0;
	temp_local=hour_number;
	add_start.add_word=HOUR_MIN_PTR_A;
	fm_read(&tempa,1);
	head_tail=0;
    head_tail1=0;

	if(tempa>=60)
		{
                head_tail=1;
                add_start.add_word=HOUR_TIME2;
                add_start.add_word+=4;
                fm_read(flash_buf,60);
                for(i=0;i<60;i++)
                  {
                  if(flash_buf[i]!=0)
                    {
                    head_tail1=1;
                    if(head_tail1==1)
                    break;
                    }
                  }

                }
	if(have_speed)				//当前小时的数据有效
		{
		temp_local--;
		if(temp_local==0)		//如果就要这一则，找到了位置
			return;
	//如果要的部分还未找到，继续找
		if(head_tail)
			{
			head_tail=0;		//检查EEP的前部是否是要找的头部位置
			temp_local--;
			if(temp_local==0)	//如果就要这一则，找到了位置
				return;
			}
//要传输的数据头一定在FLASH中
//如果仍然没有找到头，要到FLASH中去查
		head_local=1;
		head_tail=(temp_local%2);
		add_start.add_word=PAGE_360H_OFF_TAIL;
		fm_read(tempd.temp_byte,2);
	    flash_address.flash_page=tempd.temp_word;	//算出绝对页面地址
		if((flash_address.flash_page-0x3800)*2>=temp_local)
			flash_address.flash_page-=((temp_local+1)/2);
			//数据将轮回到上一个扇区
		else
			flash_address.flash_page=(flash_address.flash_page-((temp_local+1)/2)+0x800);
		flash_address.flash_page&=0x3fff;
		}
	else
		{
		if(head_tail)
			{
			head_tail=0;		//检查EEP的前部是否是要找的头部位置
			temp_local--;
			if(temp_local==0)	//如果就要这一则，找到了位置
				return;
                         }
	//如果仍然没有找到头，要到FLASH中去查
			head_local=1;
			head_tail=(temp_local%2);
			add_start.add_word=PAGE_360H_OFF_TAIL;
		fm_read(tempd.temp_byte,2);
	  flash_address.flash_page=tempd.temp_word;	//算出绝对页面地址
		if((flash_address.flash_page-0x3800)*2>=temp_local)
			flash_address.flash_page-=((temp_local+1)/2);
			//数据将轮回到上一个扇区
		else
			flash_address.flash_page=(flash_address.flash_page-((temp_local+1)/2)+0x800);
		flash_address.flash_page&=0x3fff;
		}
	}
//函数judge_local_hour结束
//*********************************************************************

void	caculate_sum_send(uchar send_number)		//caculate checksum with old sum and send it without checksum
	{
	uart_sendhead=send_number;
	make_checksum1();
	uart_sendhead--;
	uart_same_way();
	}
void	send_checksum1(void)
	{
	com1_send_buf[0]=checksum_send;
	uart_sendhead=0;
	uart_same_way();
	}

void	send_page_head(void)
	{
	copy_ram_same(flash_buf,com1_send_buf,4);
	com1_send_buf[4]=0;
	caculate_sum_send(5);
	copy_ram_same(flash_buf+4,com1_send_buf,60);
	caculate_sum_send(60);
	}
void	send_page_tail(void)
	{
	copy_ram_same(flash_buf+64,com1_send_buf,4);
	com1_send_buf[4]=0;
	caculate_sum_send(5);
	copy_ram_same(flash_buf+68,com1_send_buf,60);
	caculate_sum_send(60);
	}
void	send_eep_head(void)
	{
	add_start.add_word=HOUR_TIME1;
	fm_read(com1_send_buf,4);
	com1_send_buf[4]=0;
	caculate_sum_send(5);
	add_start.add_word=HOUR_SPEED1;
	fm_read(com1_send_buf,60);
	caculate_sum_send(60);
	}
void