| ??? 05/10/06 13:36 Read: times |
#115933 - Three issues Responding to: ???'s previous message |
Veena, your use of RTC in this instance was extremely confusing. From what I understand we have two 'RTCs' - one is the timer internal to the microprocessor and the other for timekeeping connected via the i2c bus.
http://www.maxim-ic.com/appnotes....umber/3300 The above appnote should give you some guidance on how to access the information in the DS1307 RTC conencted via the i2c bus. The operations performed via the i2c bus are the same regardless of which microprocessor you're using however the actual method of accessing the i2c bus can differ between microcontrollers. Some microcontrollers have i2c hardware (such as yours) whereas others use port pins and software to perform the i2c operations. You can choose which method you wish to use. Be aware that not all i2c clock chips are the same - you need to target your code to a particular type, so using code for a philips RTC is useless if you're using a Dallas DS1307. So, to solve your problem, there are three issues: 1/ the RTC inside the microprocessor 2/ the i2c interface 3/ the DS1307 |
| Topic | Author | Date |
| How to enable the oscillator in RTC? | 01/01/70 00:00 | |
| I2C Code | 01/01/70 00:00 | |
| SMBus include SCL and SDA lines | 01/01/70 00:00 | |
| derivative or deviate? | 01/01/70 00:00 | |
| I2C RTC | 01/01/70 00:00 | |
| be careful | 01/01/70 00:00 | |
| I2C program and controller | 01/01/70 00:00 | |
| since you are using a derivative (F120) | 01/01/70 00:00 | |
| I used the Code Architect....Erik Sir, | 01/01/70 00:00 | |
| Lost in confusion. | 01/01/70 00:00 | |
| the confooosion is ... | 01/01/70 00:00 | |
| To display time | 01/01/70 00:00 | |
| is reading that tough, evidently it must | 01/01/70 00:00 | |
| I2C RTC Interfacing with 8051 | 01/01/70 00:00 | |
| horsefeathers | 01/01/70 00:00 | |
| My position in this I2C RTC.... | 01/01/70 00:00 | |
| yes, after 15 minutes | 01/01/70 00:00 | |
| Three issues | 01/01/70 00:00 | |
| yes,after 15 minutes... | 01/01/70 00:00 | |
| More specifically.... | 01/01/70 00:00 | |
| use the debugger | 01/01/70 00:00 | |
| Thank you ... | 01/01/70 00:00 | |
Persistance wins again | 01/01/70 00:00 |