riot-ci/RIOT
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

drivers/ds18: fix ds18 temperature conversion

Browse Source
This commit is contained in:
Evgeniy Krysanov 2020-02-05 00:47:14 +03:00
parent d7ec96a91c
commit 7b64d35af5
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/ds18/ds18.c
View File

@ -184,8 +184,8 @@ int ds18_read(const ds18_t *dev, int16_t *temperature)
DEBUG("[DS18] Received byte: 0x%02x\n", b2); DEBUG("[DS18] Received byte: 0x%02x\n", b2);
int32_t measurement = ((int16_t)(b2 << 8 | b1) * 625); int32_t measurement = (int16_t)(b2 << 8 | b1);
*temperature = (int16_t)(measurement / 100); *temperature = (int16_t)((100 * measurement) >> 4);
return DS18_OK; return DS18_OK;
} }