初始化提交

arduino-cli/libraries/Adafruit_INA219/examples/getcurrent/getcurrent.ino

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+#include <Wire.h>
+#include <Adafruit_INA219.h>
+
+Adafruit_INA219 ina219;
+
+
+void setup(void) 
+{
+  Serial.begin(115200);
+  while (!Serial) {
+      // will pause Zero, Leonardo, etc until serial console opens
+      delay(1);
+  }
+
+  uint32_t currentFrequency;
+    
+  Serial.println("Hello!");
+  
+  // Initialize the INA219.
+  // By default the initialization will use the largest range (32V, 2A).  However
+  // you can call a setCalibration function to change this range (see comments).
+  if (! ina219.begin()) {
+    Serial.println("Failed to find INA219 chip");
+    while (1) { delay(10); }
+  }
+  // To use a slightly lower 32V, 1A range (higher precision on amps):
+  //ina219.setCalibration_32V_1A();
+  // Or to use a lower 16V, 400mA range (higher precision on volts and amps):
+  //ina219.setCalibration_16V_400mA();
+
+  Serial.println("Measuring voltage and current with INA219 ...");
+}
+
+void loop(void) 
+{
+  float shuntvoltage = 0;
+  float busvoltage = 0;
+  float current_mA = 0;
+  float loadvoltage = 0;
+  float power_mW = 0;
+
+  shuntvoltage = ina219.getShuntVoltage_mV();
+  busvoltage = ina219.getBusVoltage_V();
+  current_mA = ina219.getCurrent_mA();
+  power_mW = ina219.getPower_mW();
+  loadvoltage = busvoltage + (shuntvoltage / 1000);
+  
+  Serial.print("Bus Voltage:   "); Serial.print(busvoltage); Serial.println(" V");
+  Serial.print("Shunt Voltage: "); Serial.print(shuntvoltage); Serial.println(" mV");
+  Serial.print("Load Voltage:  "); Serial.print(loadvoltage); Serial.println(" V");
+  Serial.print("Current:       "); Serial.print(current_mA); Serial.println(" mA");
+  Serial.print("Power:         "); Serial.print(power_mW); Serial.println(" mW");
+  Serial.println("");
+
+  delay(2000);
+}