| Anil Sangani 02/01/10 06:04 Read: 287 times Rajkot India |
#172831 - problem with ds1307 andi2c |
i am new with i2c and ds1307.
intialy i am trying to start the ossilator square wave in 1hz frequency to check if code is witten into resister 07 of rtc i am using 12MHZ crystal with 89S52 i2c routine used is available in 8052 com code library by mehdi. i have changed to requured slave adress for ds1307 D0 for write but the pin 7 for oscilater remains 0 instead of 1HZ output. it seems my i2c is not working. Using port 2.0 and 2.1 for sda and scl with 10K pullup. plase help anil |
| Topic | Author | Date |
| problem with ds1307 andi2c | Anil Sangani | 02/01/10 06:04 |
Did you provide a resistor...  | Michael Karas | 02/01/10 08:45 |
pull up on ds1307 sqwout | Anil Sangani | 02/03/10 23:52 |
| Pullup resistor size... | Michael Karas | 02/01/10 09:02 |
| clock halt bit? | John Myers | 02/01/10 16:31 |
| ds1307 and i2c problem | Anil Sangani | 02/02/10 00:57 |
| A 10MHz analog scope is fine for 100kHz i2c | David Prentice | 02/02/10 02:25 |