Merge pull request #16 from UT2UH/getTime

getUnixEpoch() method added
2021-03-30 10:54:17 +01:00
parent 348bcb20d4 82c4020522
commit 691ea47039
4 changed files with 154 additions and 0 deletions
@@ -0,0 +1,103 @@
+/*
+  Getting Unix Epoch Time and micros using u-blox commands
+  By: UT2UH
+  Date: March 30th, 2021
+  License: MIT. See license file for more information but you can
+  basically do whatever you want with this code.
+
+  This example shows how to query a u-blox module for the current time and date as Unix Epoch uint32_t type to avoid time.h dependency.
+  We also turn off the NMEA output on the I2C port. This decreases the amount of I2C traffic dramatically.
+
+  Leave NMEA parsing behind. Now you can simply ask the module for the datums you want!
+
+  Feel like supporting open source hardware?
+  Buy a board from SparkFun!
+  ZED-F9P RTK2: https://www.sparkfun.com/products/15136
+  NEO-M8P RTK: https://www.sparkfun.com/products/15005
+  SAM-M8Q: https://www.sparkfun.com/products/15106
+
+  Hardware Connections:
+  Plug a Qwiic cable into the GNSS and a BlackBoard
+  If you don't have a platform with a Qwiic connection use the SparkFun Qwiic Breadboard Jumper (https://www.sparkfun.com/products/14425)
+  Open the serial monitor at 115200 baud to see the output
+*/
+
+#include <Wire.h> //Needed for I2C to GNSS
+
+#include <SparkFun_u-blox_GNSS_Arduino_Library.h> //http://librarymanager/All#SparkFun_u-blox_GNSS
+SFE_UBLOX_GNSS myGNSS;
+
+
+long lastTime = 0; //Simple local timer. Limits amount if I2C traffic to u-blox module.
+
+uint32_t us;  //microseconds returned by getUnixEpoch()
+  
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial)
+    ; //Wait for user to open terminal
+  Serial.println("SparkFun u-blox Example");
+
+  Wire.begin();
+  
+  if (myGNSS.begin() == false) //Connect to the u-blox module using Wire port
+  {
+    Serial.println(F("u-blox GNSS not detected at default I2C address. Please check wiring. Freezing."));
+    while (1)
+      ;
+  }
+
+  myGNSS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise)
+  //myGNSS.saveConfiguration();        //Optional: Save the current settings to flash and BBR
+
+  Serial.println("Compare Unix Epoch given with reference one from https://www.epochconverter.com/");
+
+}
+
+void loop()
+{
+  //Query module only every second. Doing it more often will just cause I2C traffic.
+  //The module only responds when a new position is available
+  if (millis() - lastTime > 1000)
+  {
+    lastTime = millis(); //Update the timer
+
+    byte SIV = myGNSS.getSIV();
+    Serial.print(F(" SIV: "));
+    Serial.print(SIV);
+
+    Serial.print("  ");
+    Serial.print(myGNSS.getYear());
+    Serial.print("-");
+    Serial.print(myGNSS.getMonth());
+    Serial.print("-");
+    Serial.print(myGNSS.getDay());
+    Serial.print(" ");
+    Serial.print(myGNSS.getHour());
+    Serial.print(":");
+    Serial.print(myGNSS.getMinute());
+    Serial.print(":");
+    Serial.print(myGNSS.getSecond());
+    Serial.print("  getUnixEpoch(micros): ");
+    Serial.print(myGNSS.getUnixEpoch(us));
+    Serial.print("  micros: ");
+    Serial.print(us, DEC);
+    
+    Serial.print("  Time is ");
+    if (myGNSS.getTimeValid() == false)
+    {
+      Serial.print("not ");
+    }
+    Serial.print("valid ");
+    if (myGNSS.getConfirmedTime() == false)
+    {
+      Serial.print("but not ");
+    } else {
+      Serial.print("and ");
+    }
+    Serial.print("confirmed");
+
+    Serial.println();
+  }
+}