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Add Fineoffset WH2A support (#625) (#804)

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Christian W. Zuckschwerdt
2018-09-06 12:53:40 +02:00
committed by GitHub
parent 0730cd8eb1
commit c75615592b
1 changed files with 8 additions and 2 deletions
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10
src/devices/fineoffset.c
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@@ -22,6 +22,7 @@
*
* The data is grouped in 6 bytes / 12 nibbles
* [pre] [pre] [type] [id] [id] [temp] [temp] [temp] [humi] [humi] [crc] [crc]
* There is an extra, unidentified 7th byte in WH2A packages.
*
* pre is always 0xFF
* type is always 0x4 (may be different for different sensor type?)
@@ -34,7 +35,7 @@
*/
static int fineoffset_WH2_callback(bitbuffer_t *bitbuffer) {
bitrow_t *bb = bitbuffer->bb;
uint8_t b[40] = {0};
uint8_t b[6] = {0};
data_t *data;
char time_str[LOCAL_TIME_BUFLEN];
@@ -50,6 +51,11 @@ static int fineoffset_WH2_callback(bitbuffer_t *bitbuffer) {
bitbuffer_extract_bytes(bitbuffer, 0, 8, b, 40);
model = "Fine Offset Electronics, WH2 Temperature/Humidity sensor";
} else if (bitbuffer->bits_per_row[0] == 55 &&
bb[0][0] == 0xFE) { // WH2A
bitbuffer_extract_bytes(bitbuffer, 0, 7, b, 48);
model = "Fine Offset WH2A sensor";
} else if (bitbuffer->bits_per_row[0] == 47 &&
bb[0][0] == 0xFE) { // WH5
bitbuffer_extract_bytes(bitbuffer, 0, 7, b, 40);
@@ -81,7 +87,7 @@ static int fineoffset_WH2_callback(bitbuffer_t *bitbuffer) {
// Nibble 5,6,7 contains 12 bits of temperature
temp = ((b[1] & 0x0F) << 8) | b[2];
if (bb[0][0] == 0xFF) { // WH2
if (bitbuffer->bits_per_row[0] != 47) { // WH2, Telldus, WH2A
// The temperature is signed magnitude and scaled by 10
if (temp & 0x800) {
temp &= 0x7FF; // remove sign bit