added MQTT QOS and Keep Alive configurable

src/ems_utils.cpp

@@ -260,3 +260,36 @@ char * _smallitoa3(uint16_t value, char * buffer) {
     buffer[3] = '\0';
     return buffer;
 }
+
+// used to read the next string from an input buffer and convert to an 8 bit int
+uint8_t _readIntNumber() {
+    char * numTextPtr = strtok(nullptr, ", \n");
+    if (numTextPtr == nullptr) {
+        return 0;
+    }
+    return atoi(numTextPtr);
+}
+
+// used to read the next string from an input buffer and convert to a double
+float _readFloatNumber() {
+    char * numTextPtr = strtok(nullptr, ", \n");
+    if (numTextPtr == nullptr) {
+        return 0;
+    }
+    return atof(numTextPtr);
+}
+
+// used to read the next string from an input buffer as a hex value and convert to a 16 bit int
+uint16_t _readHexNumber() {
+    char * numTextPtr = strtok(nullptr, ", \n");
+    if (numTextPtr == nullptr) {
+        return 0;
+    }
+    return (uint16_t)strtol(numTextPtr, 0, 16);
+}
+
+// used to read the next string from an input buffer
+char * _readWord() {
+    char * word = strtok(nullptr, ", \n");
+    return word;
+}