fix: cleared compiler warnings

CHANGELOG.md

@@ -5,6 +5,8 @@
   - Arduino `String` class
   - C `char *` or `char[]` 
   - Flash string using `F`,`PSTR` or `FPSTR` macros
+### Fixes 
+ - [176](https://github.com/tobiasschuerg/InfluxDB-Client-for-Arduino/pull/176) - Cleared all compiler warnings
 
 ## 3.10.0 [2022-01-20]
 ### Features
@@ -135,4 +137,4 @@
  - Richer set of data types for fields and timestamp methods
  - Advanced features, such as implicit batching, automatic retrying on server back-pressure and connection failure, along with secured communication over TLS supported for both devices and authentication
  - Special characters escaping
- - Backward support for original API of V1/V2
+ - Backward support for original API of V1/V2

src/InfluxDbClient.cpp

@@ -681,8 +681,8 @@ InfluxDBClient::BatchStreamer::BatchStreamer(InfluxDBClient::Batch *batch) {
     _length = 0;
     _pointer = 0;
     _linePointer = 0;
-    for(int i=0;i<_batch->pointer;i++) {
-    _length += strlen(_batch->buffer[i])+1;
+    for(uint16_t i=0;i<_batch->pointer;i++) {
+        _length += strlen(_batch->buffer[i])+1;
     }
 }
 
@@ -703,8 +703,8 @@ int InfluxDBClient::BatchStreamer::read(uint8_t* buffer, size_t len) {
 size_t InfluxDBClient::BatchStreamer::readBytes(char* buffer, size_t len) {
 
     INFLUXDB_CLIENT_DEBUG("BatchStream::readBytes %d\n", len);
-    int r=0;
-    for(int i=0;i<len;i++) {
+    unsigned int r=0;
+    for(unsigned int i=0;i<len;i++) {
         if(available()) {
             buffer[i] = read();
             r++;
@@ -740,12 +740,9 @@ int InfluxDBClient::BatchStreamer::peek() {
     } else {
         r = _batch->buffer[_pointer][_linePointer];
     }
-    // #ifdef INFLUXDB_CLIENT_DEBUG_ENABLE
-    //     Serial.printf_P(PSTR("%c"), r);
-    // #endif
     return r;
 }
 
-size_t InfluxDBClient::BatchStreamer::write(uint8_t data)  {
+size_t InfluxDBClient::BatchStreamer::write(uint8_t)  {
     return 0;
 }

src/query/FluxTypes.cpp

@@ -38,8 +38,7 @@ const char	*FluxBinaryDataTypeBase64         = "base64Binary";
 const char	*FluxDatatypeDatetimeRFC3339      = "dateTime:RFC3339";
 const char	*FluxDatatypeDatetimeRFC3339Nano  = "dateTime:RFC3339Nano";
 
-FluxBase::FluxBase(const String &rawValue) {
-    _rawValue = rawValue;
+FluxBase::FluxBase(const String &rawValue):_rawValue(rawValue) {
 }
 
 FluxBase::~FluxBase() {
@@ -144,7 +143,7 @@ FluxString::FluxString(const String &rawValue, const char *type):FluxString(rawV
 
 }
 
-FluxString::FluxString(const String &rawValue, const String &value, const char *type):FluxBase(rawValue),value(value),_type(type)
+FluxString::FluxString(const String &rawValue, const String &value, const char *type):FluxBase(rawValue),_type(type),value(value)
 {
 
 }

src/query/Params.cpp

@@ -52,7 +52,7 @@ QueryParams &QueryParams::operator=(const QueryParams &other) {
 }
 
 QueryParams &QueryParams::add(const String &name, float value, int decimalPlaces) {
-  return add(name, (double)value);
+  return add(name, (double)value, decimalPlaces);
 }
 
 QueryParams &QueryParams::add(const String &name, double value, int decimalPlaces) {