Added support for retrieving energy price from ENTSO-E API

src/entsoe/EntsoeA44Parser.cpp

@@ -0,0 +1,102 @@
+#include "EntsoeA44Parser.h"
+#include "HardwareSerial.h"
+
+EntsoeA44Parser::EntsoeA44Parser() {
+    for(int i = 0; i < 24; i++) points[i] = 0.0;
+}
+
+char* EntsoeA44Parser::getCurrency() {
+    return currency;
+}
+
+char* EntsoeA44Parser::getMeasurementUnit() {
+    return measurementUnit;
+}
+
+double EntsoeA44Parser::getPoint(uint8_t position) {
+    return points[position];
+}
+
+int EntsoeA44Parser::available() {
+
+}
+
+int EntsoeA44Parser::read() {
+    
+}
+
+int EntsoeA44Parser::peek() {
+
+}
+
+void EntsoeA44Parser::flush() {
+
+}
+
+size_t EntsoeA44Parser::write(const uint8_t *buffer, size_t size) {
+    for(int i = 0; i < size; i++) {
+        write(buffer[i]);
+    }
+    return size;
+}
+
+size_t EntsoeA44Parser::write(uint8_t byte) {
+    if(docPos == DOCPOS_CURRENCY) {
+        buf[pos++] = byte;
+        if(pos == 3) {
+            buf[pos++] = '\0';
+            memcpy(currency, buf, pos);
+            docPos = DOCPOS_SEEK;
+            pos = 0;
+        }
+    } else if(docPos == DOCPOS_MEASUREMENTUNIT) {
+        buf[pos++] = byte;
+        if(pos == 3) {
+            buf[pos++] = '\0';
+            memcpy(measurementUnit, buf, pos);
+            docPos = DOCPOS_SEEK;
+            pos = 0;
+        }
+    } else if(docPos == DOCPOS_POSITION) {
+        if(byte == '<') {
+            buf[pos] = '\0';
+            pointNum = String(buf).toInt() - 1;
+            docPos = DOCPOS_SEEK;
+            pos = 0;
+        } else {
+            buf[pos++] = byte;
+        }
+    } else if(docPos == DOCPOS_AMOUNT) {
+        if(byte == '<') {
+            buf[pos] = '\0';
+            points[pointNum] = String(buf).toDouble();
+            docPos = DOCPOS_SEEK;
+            pos = 0;
+        } else {
+            buf[pos++] = byte;
+        }
+    } else {
+        if(pos == 0) {
+            if(byte == '<') {
+                buf[pos++] = byte;
+            }
+        } else if(byte == '>') {
+            buf[pos++] = byte;
+            buf[pos] = '\0';
+            if(strcmp(buf, "<currency_Unit.name>") == 0) {
+                docPos = DOCPOS_CURRENCY;
+            } else if(strcmp(buf, "<price_Measure_Unit.name>") == 0) {
+                docPos = DOCPOS_MEASUREMENTUNIT;
+            } else if(strcmp(buf, "<position>") == 0) {
+                docPos = DOCPOS_POSITION;
+                pointNum = 0xFF;
+            } else if(strcmp(buf, "<price.amount>") == 0) {
+                docPos = DOCPOS_AMOUNT;
+            }
+            pos = 0;
+        } else {
+            buf[pos++] = byte;
+        }
+    }
+    return 1;
+}