Reading values works now

src/GcLogger.h

@@ -25,6 +25,7 @@ class GcLogger {
 
 public:
     void readIni(const string &);
+
     int run();
 };
 

src/GmcDevice.cpp

@@ -33,7 +33,7 @@ int GmcDevice::getCPM() {
     }
 
     string cmd = "<GETCPM>>";
-    string result;
+    vector<uint8_t> result;
 
     if (device->serialWrite(cmd) == cmd.length()) {
         result = device->serialRead(2);  // cpm result has size 2
@@ -51,7 +51,7 @@ float GmcDevice::getTemperature() {
     }
 
     string cmd = "<GETTEMP>>";
-    string result;
+    vector<uint8_t> result;
 
     if (device->serialWrite(cmd) == cmd.length()) {
         result = device->serialRead(4);  // temp result has size 4
@@ -60,8 +60,8 @@ float GmcDevice::getTemperature() {
     }
 
     int sign = result[2] == 0 ? 1 : -1;
-    float temp = result[0];
-    temp += (float) result[1] / 10;
+    float temp = result[0];  // integer part
+    temp += static_cast<float>(result[1] / 10.0); // float part
     temp = temp * sign;
     return temp;
 }
@@ -73,7 +73,7 @@ string GmcDevice::getVersion() {
     }
 
     string cmd = "<GETVER>>";
-    string result;
+    vector<uint8_t> result;
 
     if (device->serialWrite(cmd) == cmd.length()) {
         result = device->serialRead(14);  // version result has size 14
@@ -81,7 +81,9 @@ string GmcDevice::getVersion() {
         cout << "Failed to send command to device!" << endl;
     }
 
-    return result;
+    string strResult(result.begin(), result.end());
+
+    return strResult;
 }
 
 bool GmcDevice::setHeartbeatOff() {

src/GmcDevice.h

@@ -12,14 +12,19 @@ class GmcDevice {
 
 public:
     GmcDevice(const string &serialPort, int baud);
+
     ~GmcDevice();
 
     bool close();
+
     bool isConnected();
 
     int getCPM();
+
     float getTemperature();
+
     string getVersion();
+
     bool setHeartbeatOff();
 };
 

src/SerialPort.cpp

@@ -60,12 +60,12 @@ SerialPort::~SerialPort() {
     serialClose();
 }
 
-string SerialPort::serialRead(int length) {
-    char *buf = (char *) calloc(length + 1, sizeof(char));
+vector<uint8_t> SerialPort::serialRead(int length) {
+    auto *buf = reinterpret_cast<uint8_t *> (calloc(length, sizeof(uint8_t)));
 
     read(fd, buf, length);
 
-    string result(buf);
+    vector<uint8_t> result(buf, buf + length);
     free(buf);
 
     return result;

src/SerialPort.h

@@ -7,6 +7,7 @@
 
 #include <iostream>
 #include <string>
+#include <vector>
 
 #include <termios.h> // POSIX terminal control definitions
 #include <unistd.h>
@@ -19,19 +20,24 @@ class SerialPort {
     struct termios tio;
     int tioBaud;
 
-    int getTioBaud(int);
+    static int getTioBaud(int);
 
 public:
     // Constructor
     SerialPort();
+
     SerialPort(const string &, int);
+
     ~SerialPort();
 
     bool isOpen();
+
     bool serialClose();
 
-    string serialRead(int);
+    vector<uint8_t> serialRead(int);
+
     int serialWrite(const string &);
+
     bool clearInput(int);
 };