xsns_14_sht3x.ino - data types adjusted, code size reduced (#21868)

* code size, data type improvements * Change temp calculation to int
arendst · Jul 30, 2024 · 4101ad7 · 4101ad7
1 parent b4a0e27
commit 4101ad7
Showing 1 changed file with 6 additions and 7 deletions.
diff --git a/tasmota/tasmota_xsns_sensor/xsns_14_sht3x.ino b/tasmota/tasmota_xsns_sensor/xsns_14_sht3x.ino
@@ -106,16 +106,15 @@ bool Sht3xRead(uint32_t sensor) {
   if ((Sht3xComputeCrc(&data[0], 2) != data[2]) || (Sht3xComputeCrc(&data[3], 2) != data[5])) {
     return false;
   }
-  float t;
-  float h;
-  t = ((((data[0] << 8) | data[1]) * 175) / 65535.0) - 45.0;
+  int32_t t_100 = ((((data[0] << 8) | data[1]) * 17500) >> 16) - 4500;
+  int32_t h_100;
   if (type == SHT3X_TYPE_SHT4X) {
-    h = ((((data[3] << 8) | data[4]) * 125) / 65535.0) - 6.0;
+    h_100 = ((((data[3] << 8) | data[4]) * 12500) >> 16) - 600;
   } else {
-    h = (((data[3] << 8) | data[4]) * 100) / 65535.0;
+    h_100 = ((((data[3] << 8) | data[4]) * 10000) >> 16);
   }
-  sht3x_sensors[sensor].temp = ConvertTemp(t);
-  sht3x_sensors[sensor].humi = ConvertHumidity(h);
+  sht3x_sensors[sensor].temp = ConvertTemp(t_100/100.0f);
+  sht3x_sensors[sensor].humi = ConvertHumidity(h_100/100.0f);
   if (isnan(sht3x_sensors[sensor].temp) || isnan(sht3x_sensors[sensor].humi)) { return false; }
     sht3x_sensors[sensor].valid = SENSOR_MAX_MISS;
   return true;