LVSS current sensing

CMakeLists.txt

@@ -57,7 +57,8 @@ project(${BOARD_LIB_NAME}
         LANGUAGES CXX C
         )
 
-add_library(${PROJECT_NAME} STATIC)
+add_library(${PROJECT_NAME} STATIC
+        targets/REV3-INA138/INA138_main.cpp)
 
 # Add sources
 target_sources(${PROJECT_NAME} PRIVATE

include/INA138.hpp

@@ -11,7 +11,7 @@ namespace log = EVT::core::log;
 namespace LVSS {
 
 /**
- * class for LVSS current sensor feature
+ * Class for LVSS current sensor feature
  */
 class INA138 {
 public:
@@ -21,22 +21,21 @@ class INA138 {
     INA138(IO::ADC& adc0);
 
     /**
-      * Calculates current using the input voltage rail into the Vicor
+      * * Get the current detected by the INA
       *
-      * @return the current
+      * @return The current
       */
     uint32_t readCurrent(IO::ADC&);
 
 private:
-    //ADC variable for getting input voltage
+    /** ADC instance for getting input voltage */
     IO::ADC& ADC;
 
     ///Read INA138 datasheet page 3
     //Resistor variables
-    static constexpr uint32_t fixedPoint = 1000;         //Use fixpoint variable to multiply everything by 1k
-    static constexpr uint32_t rShunt = 0.05 * fixedPoint;//0.05 ohm resistor
-    static constexpr uint32_t r1 = 5000 * fixedPoint;    //5k ohm
-    static constexpr uint32_t r3 = 50000;                //50k ohm
+     static constexpr uint32_t rShunt = 0.05 * 100;//0.05 ohm resistor
+    static constexpr uint32_t r1 = 5000 ;    //5k ohm
+    static constexpr uint32_t r3 = 50000;   //50k ohm
 };
 
 }// namespace LVSS

src/INA138.cpp

@@ -2,8 +2,7 @@
 
 namespace LVSS {
 
-INA138::INA138(IO::ADC& adc0) : ADC(adc0) {
-}
+INA138::INA138(IO::ADC& adc0) : ADC(adc0) {}
 
 uint32_t INA138::readCurrent(IO::ADC& adc0) {
     //Gets adcCounts from adc

targets/REV3-INA138/INA138_main.cpp

@@ -0,0 +1,40 @@
+/**
+* This is a basic sample to show how the current sensing feature of the
+ * LVSS using the INA138 IC
+*/
+
+#include <EVT/io/CANopen.hpp>
+#include <EVT/io/GPIO.hpp>
+#include <EVT/io/UART.hpp>
+#include <EVT/io/pin.hpp>
+#include <EVT/manager.hpp>
+#include <EVT/utils/log.hpp>
+#include <EVT/utils/time.hpp>
+#include <LVSS.hpp>
+
+namespace IO = EVT::core::IO;
+namespace DEV = EVT::core::DEV;
+namespace time = EVT::core::time;
+namespace log = EVT::core::log;
+namespace types = EVT::core::types;
+using namespace std;
+
+int main(){
+    // Initialize system
+    EVT::core::platform::init();
+
+    // Setup UART
+    IO::UART& uart = IO::getUART<IO::Pin::UART_TX, IO::Pin::UART_RX>(9600);
+    log::LOGGER.setUART(&uart);
+    log::LOGGER.setLogLevel(log::Logger::LogLevel::INFO);
+
+    //ADC
+    IO::ADC& adc0 = IO::getADC<IO::Pin::PA_1>();
+
+    LVSS::INA138 ina138(adc0);
+
+    while(1){
+        uart.printf("ADC0: %d\r\n mA", ina138.readCurrent(adc0));
+        time::wait(500);
+    }
+}

targets/REV3-LVSS/main.cpp

@@ -4,7 +4,7 @@
  * enters.
  */
 
-#include "LVSS.hpp"
+#include <LVSS.hpp>
 #include <EVT/io/CANopen.hpp>
 #include <EVT/io/GPIO.hpp>
 #include <EVT/io/UART.hpp>
@@ -53,9 +53,6 @@ int main() {
     // initialize timer? probably don't need
     DEV::Timerf3xx timer(TIM2, 160);
 
-    //ADC
-    IO::ADC& adc0 = IO::getADC<IO::Pin::PA_1>();
-
     LVSS::LVSS lvss(lvssEn0);
 
     types::FixedQueue<CANOPEN_QUEUE_SIZE, IO::CANMessage> canOpenQueue;