📄 1602.lst
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198 1 ReadValue = Read1302(DS1302_MINUTE);
199 1 Time->Minute = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
200 1 ReadValue = Read1302(DS1302_HOUR);
201 1 Time->Hour = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
202 1 ReadValue = Read1302(DS1302_DAY);
203 1 Time->Day = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
204 1 ReadValue = Read1302(DS1302_WEEK);
205 1 Time->Week = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
206 1 ReadValue = Read1302(DS1302_MONTH);
207 1 Time->Month = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
208 1 ReadValue = Read1302(DS1302_YEAR);
209 1 Time->Year = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
210 1 }
211
212 void DateToStr(SYSTEMTIME *Time) //将时间年,月,日,星期数据转换成液晶显示字符串,放到数组里DateString[]
213 { if(hide_year<2) //这里的if,else语句都是判断位闪烁,<2显示数据,>2就不显示,输出字符串格式
-为 2007/07/22
214 1 {
215 2 Time->DateString[0] = '2';
216 2 Time->DateString[1] = '0';
217 2 Time->DateString[2] = Time->Year/10 + '0';
218 2 Time->DateString[3] = Time->Year%10 + '0';
219 2 }
220 1 else
221 1 {
222 2 Time->DateString[0] = ' ';
223 2 Time->DateString[1] = ' ';
224 2 Time->DateString[2] = ' ';
225 2 Time->DateString[3] = ' ';
226 2 }
227 1 Time->DateString[4] = '/';
228 1 if(hide_month<2)
229 1 {
230 2 Time->DateString[5] = Time->Month/10 + '0';
231 2 Time->DateString[6] = Time->Month%10 + '0';
232 2 }
233 1 else
234 1 {
235 2 Time->DateString[5] = ' ';
236 2 Time->DateString[6] = ' ';
237 2 }
238 1 Time->DateString[7] = '/';
239 1 if(hide_day<2)
240 1 {
C51 COMPILER V8.02 1602 04/07/2012 10:23:53 PAGE 5
241 2 Time->DateString[8] = Time->Day/10 + '0';
242 2 Time->DateString[9] = Time->Day%10 + '0';
243 2 }
244 1 else
245 1 {
246 2 Time->DateString[8] = ' ';
247 2 Time->DateString[9] = ' ';
248 2 }
249 1 if(hide_week<2)
250 1 {
251 2 week_value[0] = Time->Week%10 + '0'; //星期的数据另外放到 week_value[]数组里,跟年,月,日的分开存放,因为
-等一下要在最后显示
252 2 }
253 1 else
254 1 {
255 2 week_value[0] = ' ';
256 2 }
257 1 week_value[1] = '\0';
258 1
259 1 Time->DateString[10] = '\0'; //字符串末尾加 '\0' ,判断结束字符
260 1 }
261
262 void TimeToStr(SYSTEMTIME *Time) //将时,分,秒数据转换成液晶显示字符放到数组 TimeString[];
263 { if(hide_hour<2)
264 1 {
265 2 Time->TimeString[0] = Time->Hour/10 + '0';
266 2 Time->TimeString[1] = Time->Hour%10 + '0';
267 2 }
268 1 else
269 1 {
270 2 Time->TimeString[0] = ' ';
271 2 Time->TimeString[1] = ' ';
272 2 }
273 1 Time->TimeString[2] = ':';
274 1 if(hide_min<2)
275 1 {
276 2 Time->TimeString[3] = Time->Minute/10 + '0';
277 2 Time->TimeString[4] = Time->Minute%10 + '0';
278 2 }
279 1 else
280 1 {
281 2 Time->TimeString[3] = ' ';
282 2 Time->TimeString[4] = ' ';
283 2 }
284 1 Time->TimeString[5] = ':';
285 1 if(hide_sec<2)
286 1 {
287 2 Time->TimeString[6] = Time->Second/10 + '0';
288 2 Time->TimeString[7] = Time->Second%10 + '0';
289 2 }
290 1 else
291 1 {
292 2 Time->TimeString[6] = ' ';
293 2 Time->TimeString[7] = ' ';
294 2 }
295 1 Time->DateString[8] = '\0';
296 1 }
297
298
299 void Initial_DS1302(void) //时钟芯片初始化
300 {
301 1 unsigned char Second=Read1302(DS1302_SECOND);
C51 COMPILER V8.02 1602 04/07/2012 10:23:53 PAGE 6
302 1 if(Second&0x80) //判断时钟芯片是否关闭
303 1 {
304 2 Write1302(0x8e,0x00); //写入允许
305 2 Write1302(0x8c,0x10); //以下写入初始化时间 日期:07/07/25.星期: 3. 时间: 23:59:55
306 2 Write1302(0x88,0x06);
307 2 Write1302(0x86,0x29);
308 2 Write1302(0x8a,0x02);
309 2 Write1302(0x84,0x23);
310 2 Write1302(0x82,0x59);
311 2 Write1302(0x80,0x55);
312 2 Write1302(0x8e,0x80); //禁止写入
313 2 }
314 1 else
315 1 {
316 2 Write1302(0x8c,0x10); //以下写入初始化时间 日期:07/07/25.星期: 3. 时间: 23:59:55
317 2 Write1302(0x88,0x06);
318 2 Write1302(0x86,0x29);
319 2 Write1302(0x8a,0x02);
320 2 Write1302(0x84,0x23);
321 2 Write1302(0x82,0x59);
322 2 Write1302(0x80,0x55);
323 2 }
324 1
325 1 }
326
327 /***********ds18b20子程序*************************/
328
329 /***********ds18b20延迟子函数（晶振12MHz ）*******/
330
331 void delay_18B20(unsigned int i)
332 {
333 1 while(i--);
334 1 }
335
336 /**********ds18b20初始化函数**********************/
337
338 void Init_DS18B20(void)
339 {
340 1 unsigned char x=0;
341 1 DQ = 1; //DQ复位
342 1 delay_18B20(8); //稍做延时
343 1 DQ = 0; //单片机将DQ拉低
344 1 delay_18B20(80); //精确延时 大于 480us
345 1 DQ = 1; //拉高总线
346 1 delay_18B20(14);
347 1 x=DQ; //稍做延时后 如果x=0则初始化成功 x=1则初始化失败
348 1 delay_18B20(20);
349 1 }
350
351 /***********ds18b20读一个字节**************/
352
353 unsigned char ReadOneChar(void)
354 {
355 1 uchar i=0;
356 1 uchar dat = 0;
357 1 for (i=8;i>0;i--)
358 1 {
359 2 DQ = 0; // 给脉冲信号
360 2 dat>>=1;
361 2 DQ = 1; // 给脉冲信号
362 2 if(DQ)
363 2 dat|=0x80;
C51 COMPILER V8.02 1602 04/07/2012 10:23:53 PAGE 7
364 2 delay_18B20(4);
365 2 }
366 1 return(dat);
367 1 }
368
369 /*************ds18b20写一个字节****************/
370
371 void WriteOneChar(uchar dat)
372 {
373 1 unsigned char i=0;
374 1 for (i=8; i>0; i--)
375 1 {
376 2 DQ = 0;
377 2 DQ = dat&0x01;
378 2 delay_18B20(5);
379 2 DQ = 1;
380 2 dat>>=1;
381 2 }
382 1 }
383
384 /**************读取ds18b20当前温度************/
385
386 void ReadTemp(void)
387 {
388 1 unsigned char a=0;
389 1 unsigned char b=0;
390 1 unsigned char t=0;
391 1
392 1 Init_DS18B20();
393 1 WriteOneChar(0xCC); // 跳过读序号列号的操作
394 1 WriteOneChar(0x44); // 启动温度转换
395 1
396 1 delay_18B20(100); // this message is wery important
397 1
398 1 Init_DS18B20();
399 1 WriteOneChar(0xCC); //跳过读序号列号的操作
400 1 WriteOneChar(0xBE); //读取温度寄存器等（共可读9个寄存器） 前两个就是温度
401 1
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