0.5.3 SHT2x

Author: RobTillaart

libraries/SHT2x/CHANGELOG.md

@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## [0.5.3] - 2025-06-19
+- Fix #37, update README to wait before first command (kudos to pdaoust)
+- add delay in async demos to wait for sensor to be ready
+- fix version number
+- minor edits
+
 ## [0.5.2] - 2025-06-14
 - PR #34 - revert status checking
 - improve some error handling

libraries/SHT2x/README.md

@@ -217,6 +217,12 @@ void loop() {
 }
 ```
 
+**Waiting until the device is ready:**
+
+These sensors typically need a bit of time to start up before they can accept commands. The SHT21, for instance, requires up to 15ms after it's been powered up. In many programs, the delay that the Arduino framework introduces between your `setup()` and `loop()` functions is sufficient, but if you intend to request your first reading in `setup()` immediately after calling `begin()`, the request may fail. If `requestTemperature()` or `requestHumidity()` returns false and the error code returned from `getError()` is `0x81` (`SHT2x_ERR_WRITECMD`), this may be a sign that the sensor isn't ready.
+
+To work around this, introduce a short delay after calling `begin()` and before requesting a reading. 15ms is probably more than sufficient, although this hasn't been tested extensively.
+
 #### Heater Functions
 
 The built-in heater can be used to test the sensor or to drive off condensation.

libraries/SHT2x/SHT2x.cpp

@@ -1,7 +1,7 @@
 //
 //    FILE: SHT2x.cpp
 //  AUTHOR: Rob Tillaart, Viktor Balint, JensB, morfeus02
-// VERSION: 0.5.2
+// VERSION: 0.5.3
 //    DATE: 2023-11-25
 // PURPOSE: Arduino library for the SHT2x temperature and humidity sensor
 //     URL: https://github.com/RobTillaart/SHT2x

libraries/SHT2x/SHT2x.h

@@ -2,7 +2,7 @@
 //
 //    FILE: SHT2x.h
 //  AUTHOR: Rob Tillaart, Viktor Balint, JensB, morfeus02
-// VERSION: 0.5.1
+// VERSION: 0.5.3
 //    DATE: 2023-11-25
 // PURPOSE: Arduino library for the SHT2x temperature and humidity sensor
 //     URL: https://github.com/RobTillaart/SHT2x
@@ -13,7 +13,7 @@
 #include "Wire.h"
 
 
-#define SHT2x_LIB_VERSION             (F("0.5.1"))
+#define SHT2x_LIB_VERSION             (F("0.5.3"))
 
 
 //  fields getStatus

libraries/SHT2x/examples/SHT2x_demo_async/SHT2x_demo_async.ino

@@ -27,6 +27,8 @@ void setup()
   Serial.print(stat, HEX);
   Serial.println();
 
+  // Wait for the sensor to be ready to start accepting commands.
+  delay(15);
   sht.requestTemperature();
 }
 

libraries/SHT2x/examples/SHT2x_demo_async_HT/SHT2x_demo_async_HT.ino

@@ -36,6 +36,8 @@ void setup()
   Serial.print(stat, HEX);
   Serial.println();
 
+  // Wait for the sensor to be ready to start accepting commands.
+  delay(15);
   sht.requestTemperature();
 }
 

libraries/SHT2x/library.json

@@ -24,7 +24,7 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/SHT2x.git"
   },
-  "version": "0.5.2",
+  "version": "0.5.3",
   "license": "MIT",
   "frameworks": "*",
   "platforms": "*",

libraries/SHT2x/library.properties

@@ -1,5 +1,5 @@
 name=SHT2x
-version=0.5.2
+version=0.5.3
 author=Rob Tillaart <[email protected]>
 maintainer=Rob Tillaart <[email protected]>
 sentence=Arduino library for the I2C SHT20 SHT21 SHT25 series temperature and humidity sensor.