📄 temp_1.lst
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237 1 SFRPAGE = CONFIG_PAGE; // set SFR page
238 1
239 1 XBR0 = 0x00;
240 1 XBR1 = 0x00; //没用的时候都一定要写出来这样规范
241 1 XBR2 = 0x44; // Enable crossbar and weak pull-up
C51 COMPILER V8.08 TEMP_1 12/24/2008 09:37:52 PAGE 5
242 1 // Enable UART1
243 1
244 1 P0MDOUT |= 0x01; // Set TX1 pin to push-pull //对于UART都有必须的一步
245 1 P2MDOUT |= 0x03; // Set P1.6(LED) to push-pull
246 1
247 1 // P1MDIN = 0xFD; // P1.1 Analog Input, Open Drain //模拟输入的开漏
248 1
249 1 SFRPAGE = SFRPAGE_SAVE; // Restore SFR page
250 1 }
251
252 //-----------------------------------------------------------------------------
253 // UART1_Init
254 //-----------------------------------------------------------------------------
255 //
256 // Return Value : None
257 // Parameters : None
258 //
259 // Configure the UART1 using Timer1, for <baudrate> and 8-N-1.
260 //
261 //-----------------------------------------------------------------------------
262 void UART1_Init (void)
263 { /*采用了定时期1来实现不同情况下的波特率*/
264 1 char SFRPAGE_SAVE = SFRPAGE; // Save Current SFR page
265 1
266 1 SFRPAGE = UART1_PAGE;
267 1 SCON1 = 0x50; // SCON1: mode 0, 8-bit UART, enable RX
268 1
269 1 SFRPAGE = TIMER01_PAGE;
270 1 TMOD &= ~0xF0; //TMR1不用
271 1 TMOD |= 0x20; // TMOD: timer 1, mode 2, 8-bit reload 定时个功能
272 1
273 1 /*下面是设置这个在不同的频率要求下实现波特率的时间初始值*/
274 1 if (SYSCLK/BAUDRATE/2/256 < 1) {
275 2 TH1 = -(SYSCLK/BAUDRATE/2);
276 2 CKCON |= 0x10; // T1M = 1; SCA1:0 = xx
277 2 } else if (SYSCLK/BAUDRATE/2/256 < 4) {
278 2 TH1 = -(SYSCLK/BAUDRATE/2/4);
279 2 CKCON &= ~0x13; // Clear all T1 related bits
280 2 CKCON |= 0x01; // T1M = 0; SCA1:0 = 01
281 2 } else if (SYSCLK/BAUDRATE/2/256 < 12) {
282 2 TH1 = -(SYSCLK/BAUDRATE/2/12);
283 2 CKCON &= ~0x13; // T1M = 0; SCA1:0 = 00
284 2 } else {
285 2 TH1 = -(SYSCLK/BAUDRATE/2/48);
286 2 CKCON &= ~0x13; // Clear all T1 related bits
287 2 CKCON |= 0x02; // T1M = 0; SCA1:0 = 10
288 2 }
289 1 //CKCON这个才是决定用那个始终的，然后才能满足计数/定时的要求。
290 1 TL1 = TH1; // Initialize Timer1
291 1 TR1 = 1; // Start Timer1
292 1
293 1 SFRPAGE = UART1_PAGE;
294 1 TI1 = 1; /*这个ready很重要*/ // Indicate TX1 ready
295 1
296 1 SFRPAGE = SFRPAGE_SAVE; // Restore SFR page
297 1
298 1 }
299
300 //-----------------------------------------------------------------------------
301 // ADC2_Init
302 //-----------------------------------------------------------------------------
303 //
C51 COMPILER V8.08 TEMP_1 12/24/2008 09:37:52 PAGE 6
304 // Return Value : None
305 // Parameters : None
306 //
307 // Configure ADC0 to use Timer3 overflows as conversion source, to
308 // generate an interrupt on conversion complete, and to use right-justified
309 // output mode. Enables ADC end of conversion interrupt. Leaves ADC disabled.
310 //
311 //-----------------------------------------------------------------------------
312 void ADC2_Init (void)
313 {
314 1 char SFRPAGE_SAVE = SFRPAGE; // Save Current SFR page
315 1
316 1 SFRPAGE = ADC2_PAGE;
317 1
318 1 ADC2CN = 0x04; // ADC2 disabled; normal tracking
319 1 // mode; ADC2 conversions are initiated
320 1 // on overflow of Timer3; ADC2 data is
321 1 // right-justified
322 1
323 1 REF2CN = 0x0F; // Enable on-chip VREF,
324 1 // and VREF output buffer
325 1 AMX2CF = 0x00; // AIN inputs are single-ended (default)
326 1 AMX2SL = 0x08; // Select AIN2.1 pin as ADC mux input
327 1 ADC2CF = (SYSCLK/SAR_CLK-1) << 3; // ADC conversion clock = 2.5MHz
328 1 EIE2 |= 0x10; // enable ADC interrupts
329 1 SFRPAGE = SFRPAGE_SAVE; // Restore SFR page
330 1
331 1
332 1 /*SFRPAGE = ADC2_PAGE;
333 1 // AMX2SL = 0x08;
334 1 // ADC2CF = 0x48;
335 1 ADC2CN = 0x44;
336 1 //REF2CN = 0x07;
337 1 //EIE2 = 0x10;
338 1
339 1 time
340 1 SFRPAGE = CONFIG_PAGE;
341 1 OSCICN = 0x83; */
342 1
343 1
344 1 }
345
346 //-----------------------------------------------------------------------------
347 // TIMER3_Init
348 //-----------------------------------------------------------------------------
349 //
350 // Return Value : None
351 // Parameters :
352 // 1) int counts - calculated Timer overflow rate
353 // range is postive range of integer: 0 to 32767
354 //
355 // Configure Timer3 to auto-reload at interval specified by <counts> (no
356 // interrupt generated) using SYSCLK as its time base.
357 //
358 //-----------------------------------------------------------------------------
359 void TIMER3_Init (void)
360 {
361 1 char SFRPAGE_SAVE = SFRPAGE; // Save Current SFR page 满足的时间溢出频率
362 1
363 1 SFRPAGE = TMR3_PAGE;
364 1
365 1 TMR3CN = 0x00; // Stop Timer3; Clear TF3;
C51 COMPILER V8.08 TEMP_1 12/24/2008 09:37:52 PAGE 7
366 1 TMR3CF = 0x00; // use SYSCLK/12 as timebase SYSCLK/12
367 1
368 1 RCAP3 = -((long)SYSCLK/SAMPLE_RATE/12); // Init reload values
369 1 TMR3 = RCAP3; // Set to reload immediately
370 1 EIE2 &= ~0x01; // Disable Timer3 interrupts
371 1 TR3 = 1; // start Timer3
372 1
373 1 SFRPAGE = SFRPAGE_SAVE; // Restore SFR page
374 1 }
375
376 //-----------------------------------------------------------------------------
377 // Interrupt Service Routines
378 //-----------------------------------------------------------------------------
379
380 //-----------------------------------------------------------------------------
381 // ADC2_ISR
382 //-----------------------------------------------------------------------------
383 //
384 // Here we take the ADC2 sample, add it to a running total <accumulator>, and
385 // decrement our local decimation counter <int_dec>. When <int_dec> reaches
386 // zero, we post the decimated result in the global variable <Result>.
387 //
388 //-----------------------------------------------------------------------------
389 void ADC2_ISR (void) interrupt 18
390 {
391 1 static unsigned int_dec=INT_DEC; // Integrate/decimate counter
392 1 // we post a new result when
393 1 // int_dec = 0
394 1 static long accumulator=0L; // Here's where we integrate the
395 1 // ADC samples
396 1 char SFRPAGE_SAVE = SFRPAGE;
397 1 SFRPAGE = ADC2_PAGE;
398 1 AD2INT = 0; // Clear ADC conversion complete
399 1 // indicator
400 1 accumulator += ADC2; // Read ADC value and add to running
401 1 // total
402 1 int_dec--; // Update decimation counter
403 1 if (int_dec == 0) // If zero, then post result
404 1 {
405 2 lchhxy=1;
406 2 int_dec = INT_DEC; // Reset counter
407 2 Result = accumulator >> 14;
408 2 accumulator = 0L; // Reset accumulator
409 2 }
410 1 SFRPAGE = SFRPAGE_SAVE;
411 1 }
412
413 //-----------------------------------------------------------------------------
414 // Support Subroutines
415 //-----------------------------------------------------------------------------
416 /*void TIMER3_ISR (void)
417 {
418 TF3=0;
419 LED1=~LED1;
420 } */
421 //-----------------------------------------------------------------------------
422 // Wait_MS
423 //-----------------------------------------------------------------------------
424 //
425 // Return Value : None
426 // Parameters:
427 // 1) unsigned int ms - number of milliseconds of delay
C51 COMPILER V8.08 TEMP_1 12/24/2008 09:37:52 PAGE 8
428 // range is full range of integer: 0 to 65335
429 //
430 // This routine inserts a delay of <ms> milliseconds.
431 //
432 //-----------------------------------------------------------------------------
433 void Wait_MS(unsigned int ms)
434 {
435 1 char SFRPAGE_SAVE = SFRPAGE; // Save Current SFR page
436 1
437 1 SFRPAGE = TMR2_PAGE;
438 1
439 1 TMR2CN = 0x00; // Stop Timer3; Clear TF3;
440 1 TMR2CF = 0x00; // use SYSCLK/12 as timebase
441 1
442 1 RCAP2 = -(SYSCLK/1000/12); // Timer 2 overflows at 1 kHz
443 1 TMR2 = RCAP2;
444 1
445 1 ET2 = 0; // Disable Timer 2 interrupts
446 1
447 1 TR2 = 1; // Start Timer 2
448 1
449 1 while(ms)
450 1 {
451 2
452 2 TF2 = 0; // Clear flag to initialize
453 2 while(!TF2); // Wait until timer overflows
454 2 ms--; // Decrement ms
455 2 }
456 1
457 1 TR2 = 0; // Stop Timer 2
458 1
459 1 SFRPAGE = SFRPAGE_SAVE; // Restore SFRPAGE
460 1 }
461
462 //-----------------------------------------------------------------------------
463 // End Of File
464 //-----------------------------------------------------------------------------
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 506 ----
CONSTANT SIZE = 20 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 14 4
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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