NAU7802: refactor data flushing

Author: tyeth

src/components/i2c/drivers/WipperSnapper_I2C_Driver_NAU7802.h

@@ -83,11 +83,7 @@ class WipperSnapper_I2C_Driver_NAU7802 : public WipperSnapper_I2C_Driver {
     }
 
     // Take 10 readings to flush out old readings (10 samples per second)
-    for (uint8_t skipCounter = 0; skipCounter < 10; skipCounter++) {
-      while (!_nau7802->available())
-        delay(1);
-      _nau7802->read();
-    }
+    flushNAU7802(10);
 
     for (int retries = 0; retries < 3; retries++) {
       if (_nau7802->calibrate(NAU7802_CALMOD_INTERNAL)) {
@@ -101,6 +97,19 @@ class WipperSnapper_I2C_Driver_NAU7802 : public WipperSnapper_I2C_Driver {
     return false;
   }
 
+  /*******************************************************************************/
+  /*!
+      @brief    Gets datapoints from sensor and discards (flushes old data).
+  */
+  /*******************************************************************************/
+  void flushNAU7802(uint8_t count) {
+    for (uint8_t skipCounter = 0; skipCounter < count; skipCounter++) {
+      while (!_nau7802->available())
+        delay(1);
+      _nau7802->read();
+    }
+  }
+
   /*******************************************************************************/
   /*!
       @brief    Gets the sensor's raw "force" value.