Hugo Harming
// Demo on how to identify and read multiple DS18B20 connected to the same bus. // Parasitic power is not used in this example. // This program is based on the sample code from Maxim/Dallas application // note 162 (http://www.maxim-ic.com/app-notes/index.mvp/id/162). Program output should look like this: *** Test with multiple DS18B20 *** Memory allocated for 20 devices. Scanning for devices... ROM CODE =62:00:00:01:CB:25:CA:28 1 ROM CODE =B6:00:00:01:CB:1B:9E:28 2 ROM CODE =66:00:00:01:CB:28:59:28 3 3 devices found. Scanning completed. Temp: 022.6875 Device: 000001CB25CA 001 Temp: 022.6875 Device: 000001CB1B9E 002 Temp: 027.6250 Device: 000001CB2859 003 Temp: 022.6250 Device: 000001CB25CA 001 Temp: 022.6875 Device: 000001CB1B9E 002 Temp: 025.3125 Device: 000001CB2859 003 Temp: 022.8125 Device: 000001CB25CA 001 Temp: 024.1875 Device: 000001CB1B9E 002 Temp: 023.7500 Device: 000001CB2859 003
Changes
| Revision | Date | Who | Commit message |
|---|---|---|---|
| 7:cf5affdab535 | 2016-01-28 | RRacer | . |
| 6:16c1a0bafb2c | 2016-01-28 | RRacer | . |
| 5:6617c30b778c | 2016-01-28 | RRacer | Added comments |
| 4:6ade7fcb2925 | 2016-01-28 | RRacer | Modified/added info text.; No program changes. |
| 3:28b7b7fddede | 2012-01-23 | RRacer |
Added check for negative temperatures (missing from the Dallas app notes). |
| 2:7ab1bf8540a3 | 2012-01-10 | RRacer |
Example: using multiple DS18B20 |
| 1:0777f93ef466 | 2012-01-23 | RRacer | Added check for negative temperatures, as it was missing in the Dallas app note. |
| 0:770734d973b0 | 2012-01-10 | RRacer | (none) |