Add psinfo tool

host/CMakeLists.txt

@@ -5,6 +5,7 @@ add_library(PowerSensor src/PowerSensor.cc src/sensors.cc)
 add_executable(psconfig src/psconfig.cc)
 add_executable(pstest src/pstest.cc)
 add_executable(psrun src/psrun.cc)
+add_executable(psinfo src/psinfo.cc)
 
 target_link_libraries(PowerSensor Threads::Threads)
 set_property(TARGET PowerSensor PROPERTY POSITION_INDEPENDENT_CODE ON)
@@ -16,7 +17,8 @@ if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
 endif()
 target_link_libraries(pstest PowerSensor)
 target_link_libraries(psrun PowerSensor)
+target_link_libraries(psinfo PowerSensor)
 
-install(TARGETS psconfig pstest psrun DESTINATION bin)
+install(TARGETS psconfig pstest psrun psinfo DESTINATION bin)
 install(FILES include/PowerSensor.hpp include/Semaphore.hpp DESTINATION include)
 install(TARGETS PowerSensor DESTINATION lib)

host/src/psinfo.cc

@@ -0,0 +1,92 @@
+#include <unistd.h>
+
+#include <iostream>
+#include <chrono>
+
+#include "PowerSensor.hpp"
+
+
+std::unique_ptr<PowerSensor3::PowerSensor> powerSensor;
+
+
+void getPowerSensor(std::string device) {
+  if (device.empty())
+    device = "/dev/ttyACM0";
+  if (powerSensor.get() == nullptr)
+    powerSensor = std::unique_ptr<PowerSensor3::PowerSensor>(new PowerSensor3::PowerSensor(device));
+}
+
+
+void printInfo() {
+  // firmware version
+  std::cout << powerSensor->getVersion() << std::endl;
+
+  PowerSensor3::State state = powerSensor->read();
+
+  double totalPower = 0;
+
+  for (unsigned pair = 0; pair < PowerSensor3::MAX_PAIRS; pair++) {
+    const std::string pairName = powerSensor->getPairName(pair);
+    const unsigned sensor_current = 2 * pair;
+    const unsigned sensor_voltage = 2 * pair + 1;
+    // only print detailed info for active sensor pairs
+    if (powerSensor->getInUse(sensor_current) && powerSensor->getInUse(sensor_voltage)) {
+        totalPower += state.current[pair] * state.voltage[pair];
+        std::cout << "Sensor pair " << pair << ":" << std::endl;
+        std::cout << "\tName: " << pairName << std::endl;
+        std::cout << "\tLatest measured power: " << state.current[pair] * state.voltage[pair] << " W" << std::endl;
+        std::cout << "\tCurrent sensor details:" << std::endl;
+        std::cout << "\t\tVref: " << powerSensor->getVref(sensor_current) << " V" << std::endl;
+        std::cout << "\t\tSensitivity: " << 1000 * powerSensor->getSensitivity(sensor_current) << " mV/A" << std::endl;
+        std::cout << "\t\tPolarity: " << powerSensor->getPolarity(sensor_current) << std::endl;
+        std::cout << "\t\tLatest value: " << state.current[pair] << " A" << std::endl;
+        std::cout << "\tVoltage sensor details:" << std::endl;
+        std::cout << "\t\tVref: " << powerSensor->getVref(sensor_voltage) << " V" << std::endl;
+        std::cout << "\t\tGain: " << powerSensor->getSensitivity(sensor_voltage) << std::endl;
+        std::cout << "\t\tPolarity: " << powerSensor->getPolarity(sensor_voltage) << std::endl;
+        std::cout << "\t\tLatest value: " << state.voltage[pair] << " V" << std::endl;
+    } else {
+        std::cout << "Sensor pair " << pair << ": inactive" << std::endl;
+    }
+  }
+  std::cout << std::endl << "Total power: " << totalPower << " W" << std::endl;
+}
+
+
+void usage(char *argv[]) {
+  std::cerr << "usage: " << argv[0] << " [-h] [-d device]" << std::endl;
+  std::cerr << "-h prints this help" << std::endl;
+  std::cerr << "-d selects the device (default: /dev/ttyACM0)" << std::endl;
+  exit(1);
+}
+
+
+int main(int argc, char *argv[]) {
+  std::string device;
+
+  std::cout << "psinfo version " <<  PowerSensor3::POWERSENSOR_VERSION << std::endl << std::endl;
+  for (int opt; (opt = getopt(argc, argv, "d:h")) >= 0;) {
+    switch (opt) {
+      // device select
+      case 'd':
+        device = optarg;
+        break;
+      // help
+      case 'h':
+        usage(argv);
+        break;
+
+      default:
+        usage(argv);
+        break;
+    }
+  }
+
+  if ((optind < argc))
+    usage(argv);
+
+  getPowerSensor(device);
+  printInfo();
+
+  return 0;
+}