ECS1030: Add string based constructor

Signed-off-by: Adelin Dobre <adelin.dobre@rinftech.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

src/ecs1030/ecs1030.cxx

@@ -35,13 +35,26 @@ using namespace upm;
 ECS1030::ECS1030 (int pinNumber) {
     m_dataPinCtx = mraa_aio_init(pinNumber);
     if (m_dataPinCtx == NULL) {
-      throw std::invalid_argument(std::string(__FUNCTION__) + 
+      throw std::invalid_argument(std::string(__FUNCTION__) +
                                   ": mraa_aio_init() failed");
     }
 
     m_calibration = 111.1;
 }
 
+ECS1030::ECS1030 (std::string initStr) : mraaIo(initStr) {
+
+  mraa_io_descriptor* descs = mraaIo.getMraaDescriptors();
+  if(!descs->aios) {
+      throw std::invalid_argument(std::string(__FUNCTION__) +
+                                  ": mraa_aio_init() failed");
+  } else {
+    m_dataPinCtx = descs->aios[0];
+  }
+
+  m_calibration = 111.1;
+}
+
 ECS1030::~ECS1030 () {
     mraa_result_t error = MRAA_SUCCESS;
 

src/ecs1030/ecs1030.hpp

@@ -24,9 +24,11 @@
 #pragma once
 
 #include <string>
+#include <vector>
 #include <math.h>
 #include <mraa/aio.h>
 #include <mraa/gpio.h>
+#include <mraa/initio.hpp>
 
 namespace upm {
 
@@ -85,6 +87,13 @@ class ECS1030 {
          */
         ECS1030 (int pinNumber);
 
+        /**
+         * Instantiates ECS1030 sensor object based on a given string.
+         *
+         * @param initStr string containing specific information for ECS1030 sensor initialization.
+         */
+        ECS1030 (std::string initStr);
+
         /**
          * ECS1030 object destructor; basically, it closes the GPIO.
          */
@@ -119,6 +128,7 @@ class ECS1030 {
     private:
         std::string         m_name;
         mraa_aio_context    m_dataPinCtx;
+        mraa::MraaIo        mraaIo;
 
         double              m_calibration;
         int                 m_lastSample;