diff --git a/libraries/TCA9548/CHANGELOG.md b/libraries/TCA9548/CHANGELOG.md
index 259df3d9..f2159d2e 100644
--- a/libraries/TCA9548/CHANGELOG.md
+++ b/libraries/TCA9548/CHANGELOG.md
@@ -6,6 +6,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## [0.1.6] - 2023-11-22
+- update readme.md
+- update keywords.txt
+
+
 ## [0.1.5] - 2023-02-12
 - fix #8 ambiguity
 - update keywords.txt
@@ -14,7 +19,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - prepare error handling (constants)
 - some minor edits.
 
-
 ## [0.1.4] - 2023-01-23
 - update GitHub actions
 - update license 2023
diff --git a/libraries/TCA9548/README.md b/libraries/TCA9548/README.md
index 8dbe72d8..c4392d60 100644
--- a/libraries/TCA9548/README.md
+++ b/libraries/TCA9548/README.md
@@ -2,8 +2,11 @@
 [![Arduino CI](https://github.com/RobTillaart/TCA9548/workflows/Arduino%20CI/badge.svg)](https://github.com/marketplace/actions/arduino_ci)
 [![Arduino-lint](https://github.com/RobTillaart/TCA9548/actions/workflows/arduino-lint.yml/badge.svg)](https://github.com/RobTillaart/TCA9548/actions/workflows/arduino-lint.yml)
 [![JSON check](https://github.com/RobTillaart/TCA9548/actions/workflows/jsoncheck.yml/badge.svg)](https://github.com/RobTillaart/TCA9548/actions/workflows/jsoncheck.yml)
+[![GitHub issues](https://img.shields.io/github/issues/RobTillaart/TCA9548.svg)](https://github.com/RobTillaart/TCA9548/issues)
+
 [![License: MIT](https://img.shields.io/badge/license-MIT-green.svg)](https://github.com/RobTillaart/TCA9548/blob/master/LICENSE)
 [![GitHub release](https://img.shields.io/github/release/RobTillaart/TCA9548.svg?maxAge=3600)](https://github.com/RobTillaart/TCA9548/releases)
+[![PlatformIO Registry](https://badges.registry.platformio.org/packages/robtillaart/library/TCA9548.svg)](https://registry.platformio.org/libraries/robtillaart/TCA9548)
 
 
 # TCA9548
@@ -129,8 +132,7 @@ Not implemented yet, preparation for 0.2.0.
 - write unit test.
 - create derived classes for compatible devices (0.2.0).
   - see above PCA9548 and PCA9548a.
-- **bool isConnected(channel, address)**  (0.2.0)
-  - keep previous mask?
+
 
 #### Could
 
@@ -140,4 +142,13 @@ Not implemented yet, preparation for 0.2.0.
 #### Wont
 
 
+## Support
+
+If you appreciate my libraries, you can support the development and maintenance.
+Improve the quality of the libraries by providing issues and Pull Requests, or
+donate through PayPal or GitHub sponsors.
+
+Thank you,
+
+
 
diff --git a/libraries/TCA9548/TCA9548.cpp b/libraries/TCA9548/TCA9548.cpp
index e8b1a82c..780558a7 100644
--- a/libraries/TCA9548/TCA9548.cpp
+++ b/libraries/TCA9548/TCA9548.cpp
@@ -1,7 +1,7 @@
 //
 //    FILE: TCA9548.cpp
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.5
+// VERSION: 0.1.6
 //    DATE: 2021-03-16
 // PURPOSE: Library for TCA9548 I2C multiplexer
 
diff --git a/libraries/TCA9548/TCA9548.h b/libraries/TCA9548/TCA9548.h
index 55dc467a..9997435f 100644
--- a/libraries/TCA9548/TCA9548.h
+++ b/libraries/TCA9548/TCA9548.h
@@ -2,7 +2,7 @@
 //
 //    FILE: TCA9548.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.5
+// VERSION: 0.1.6
 //    DATE: 2021-03-16
 // PURPOSE: Library for TCA9548 I2C multiplexer
 //     URL: https://github.com/RobTillaart/TCA9548
@@ -12,7 +12,7 @@
 #include "Wire.h"
 
 
-#define TCA9548_LIB_VERSION             (F("0.1.5"))
+#define TCA9548_LIB_VERSION             (F("0.1.6"))
 
 
 //  ERROR CODES (to be elaborated)
diff --git a/libraries/TCA9548/keywords.txt b/libraries/TCA9548/keywords.txt
index 718bee2d..285dfb48 100644
--- a/libraries/TCA9548/keywords.txt
+++ b/libraries/TCA9548/keywords.txt
@@ -30,3 +30,6 @@ getError	KEYWORD2
 TCA9548_LIB_VERSION	LITERAL1
 
 TCA9548_OK	LITERAL1
+TCA9548_ERROR_I2C	LITERAL1
+TCA9548_ERROR_CHANNEL	LITERAL1
+
diff --git a/libraries/TCA9548/library.json b/libraries/TCA9548/library.json
index 4082bac0..45ccf5c3 100644
--- a/libraries/TCA9548/library.json
+++ b/libraries/TCA9548/library.json
@@ -15,9 +15,9 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/TCA9548"
   },
-  "version": "0.1.5",
+  "version": "0.1.6",
   "license": "MIT",
-  "frameworks": "arduino",
+  "frameworks": "*",
   "platforms": "*",
   "headers": "TCA9548.h"
 }
diff --git a/libraries/TCA9548/library.properties b/libraries/TCA9548/library.properties
index 9237a4f9..eb6028f8 100644
--- a/libraries/TCA9548/library.properties
+++ b/libraries/TCA9548/library.properties
@@ -1,5 +1,5 @@
 name=TCA9548
-version=0.1.5
+version=0.1.6
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Arduino Library for TCA9548 I2C multiplexer.