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Fix negative temperatures on RainPoint-Soil #3212

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merged 1 commit into from
Feb 28, 2025
Merged

Fix negative temperatures on RainPoint-Soil #3212

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4 changes: 2 additions & 2 deletions src/devices/rainpoint.c
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ Data layout:
^^ unknown?
^^ channel (but maybe also other encoded data: 9F: CH1; B1: CH2; B7: CH3;)
^^ ^^ unknown? (second byte changes between 00 and 02)
^^ temperature (degrees)
^^ temperature (degrees, 2's complement)
^^ humidity (percentage)
^^ unknown?
^^ Checksum, simple 4-bit addition over 20 nibbles (reflected)
Expand Down Expand Up @@ -86,7 +86,7 @@ static int rainpoint_decode(r_device *decoder, bitbuffer_t *bitbuffer)
int id = (b[2] << 8) | b[3]; // just a guess
int flags = (b[4]); // just a guess
int status = (b[5] << 8) | b[6]; // just a guess
float temp_c = b[7];
float temp_c = (int8_t)b[7];
int moisture = b[8];
int chan = 0; // 9f: CH1, b1: CH2, b7: CH3
//int batt = 0;
Expand Down
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