When `ds18_read` returns -2506, DS18 test print `Temperature [ºC]: -25.-6` whereas it should print `Temperature [ºC]: -25.06. This commit fixes this issue.
When `ds18_read` returns -2506, DS18 test print `Temperature [ºC]: -25.-6` whereas it should print `Temperature [ºC]: -25.06. This commit fixes this issue.