Ass register class for modbus comms, without hw addresses yet

Modbus/src/ModbusRegister.cpp

@@ -0,0 +1,27 @@
+#include "ModbusRegister.h"
+
+ModbusRegister::ModbusRegister(ModbusMaster *master, int address, bool holdingRegister)
+	:m(master), addr(address), hr(holdingRegister) {
+	// TODO Auto-generated constructor stub
+
+}
+
+ModbusRegister::~ModbusRegister() {
+	// TODO Auto-generated destructor stub
+}
+
+int ModbusRegister::read() {
+	uint8_t result = hr ? m->readHoldingRegisters(addr, 1) : m->readInputRegisters(addr, 1) ;
+	// check if we were able to read
+	if (result == m->ku8MBSuccess) {
+		return m->getResponseBuffer(0);
+	}
+	return -1;
+}
+
+void ModbusRegister::write(int value)
+{
+	// write only if not
+	if(hr) m->writeSingleRegister(addr, value); // not checking if write succeeds
+
+}