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Import ds18x20 code
author Matt Johnston <matt@ucc.asn.au>
date Fri, 18 May 2012 23:57:08 +0800
parents 7aebb1452422
children 1bfe28c348dd
comparison
equal deleted inserted replaced
314:7aebb1452422 315:7d409dded901
12 #include <util/delay.h> 12 #include <util/delay.h>
13 #include <avr/pgmspace.h> 13 #include <avr/pgmspace.h>
14 #include <util/crc16.h> 14 #include <util/crc16.h>
15 15
16 #include "integer.h" 16 #include "integer.h"
17 #include "onewire.h"
17 18
18 // configuration params 19 // configuration params
19 // - measurement interval 20 // - measurement interval
20 // - transmit interval 21 // - transmit interval
21 // - bluetooth params 22 // - bluetooth params
184 if (comms_count == COMMS_WAKE) 185 if (comms_count == COMMS_WAKE)
185 { 186 {
186 comms_count = 0; 187 comms_count = 0;
187 need_comms = 1; 188 need_comms = 1;
188 } 189 }
189
190 PORT_LED ^= _BV(PIN_LED);
191 } 190 }
192 191
193 DWORD get_fattime (void) 192 DWORD get_fattime (void)
194 { 193 {
195 return 0; 194 return 0;
311 310
312 static void 311 static void
313 blink() 312 blink()
314 { 313 {
315 PORT_LED &= ~_BV(PIN_LED); 314 PORT_LED &= ~_BV(PIN_LED);
316 _delay_ms(100); 315 _delay_ms(1);
317 PORT_LED |= _BV(PIN_LED); 316 PORT_LED |= _BV(PIN_LED);
318 } 317 }
319 318
320 static void 319 static void
321 long_delay(int ms) 320 long_delay(int ms)
332 { 331 {
333 uart_on(); 332 uart_on();
334 printf_P(PSTR("Bad interrupt\n")); 333 printf_P(PSTR("Bad interrupt\n"));
335 } 334 }
336 335
336 static void
337 set_2mhz()
338 {
339 cli();
340 CLKPR = _BV(CLKPCE);
341 // divide by 4
342 CLKPR = _BV(CLKPS1);
343 sei();
344 }
345
346 static void
347 test1wire()
348 {
349 ow_reset();
350 }
351
337 int main(void) 352 int main(void)
338 { 353 {
354 set_2mhz();
355
339 DDR_LED |= _BV(PIN_LED); 356 DDR_LED |= _BV(PIN_LED);
340 blink(); 357 blink();
341 358
342 stdout = &mystdout; 359 stdout = &mystdout;
343 uart_on(); 360 uart_on();
374 { 391 {
375 do_comms() 392 do_comms()
376 } 393 }
377 #else 394 #else
378 for(;;){ 395 for(;;){
396
397 test1wire();
398
379 /* insert your main loop code here */ 399 /* insert your main loop code here */
380 if (need_measurement) 400 if (need_measurement)
381 { 401 {
382 do_measurement(); 402 do_measurement();
383 continue; 403 continue;
388 do_comms(); 408 do_comms();
389 continue; 409 continue;
390 } 410 }
391 411
392 deep_sleep(); 412 deep_sleep();
413 blink();
393 } 414 }
394 #endif 415 #endif
395 return 0; /* never reached */ 416 return 0; /* never reached */
396 } 417 }