Added several classes to encapsulate the packet generation

lib/Hoymiles/src/commands/MultiDataCommand.cpp

@@ -0,0 +1,51 @@
+#include "MultiDataCommand.h"
+#include "crc.h"
+
+MultiDataCommand::MultiDataCommand(uint64_t target_address, uint64_t router_address, uint8_t data_type, time_t time)
+    : CommandAbstract(target_address, router_address)
+{
+    _payload[0] = 0x15;
+    _payload[9] = 0x80;
+    setDataType(data_type);
+    _payload[11] = 0x00;
+    setTime(time);
+    _payload[16] = 0x00; // Gap
+    _payload[17] = 0x00; // Gap
+    _payload[18] = 0x00;
+    _payload[19] = 0x00;
+    _payload[20] = 0x00; // Password
+    _payload[21] = 0x00; // Password
+    _payload[22] = 0x00; // Password
+    _payload[23] = 0x00; // Password
+
+    uint16_t crc = crc16(&_payload[10], 14); // From data_type till password
+    _payload[24] = (uint8_t)(crc >> 8);
+    _payload[25] = (uint8_t)(crc);
+
+    _payload_size = 26;
+}
+
+void MultiDataCommand::setDataType(uint8_t data_type)
+{
+    _payload[10] = data_type;
+}
+uint8_t MultiDataCommand::getDataType()
+{
+    return _payload[10];
+}
+
+void MultiDataCommand::setTime(time_t time)
+{
+    _payload[12] = (uint8_t)(time >> 24);
+    _payload[13] = (uint8_t)(time >> 16);
+    _payload[14] = (uint8_t)(time >> 8);
+    _payload[15] = (uint8_t)(time);
+}
+
+time_t MultiDataCommand::getTime()
+{
+    return (time_t)(_payload[12] << 24)
+        | (time_t)(_payload[13] << 16)
+        | (time_t)(_payload[14] << 8)
+        | (time_t)(_payload[15]);
+}