Adding support for Time Pulse Parameters

2021-01-13 12:00:14 +00:00
parent e3e9b83d4d
commit 34f15c25f3
4 changed files with 200 additions and 0 deletions
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+/*
+  Time Pulse Parameters
+  By: Paul Clark (PaulZC)
+  Date: January 13th, 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 change the time pulse parameters and configure the TIMEPULSE (PPS)
+  pin to produce a 1kHz squarewave
+
+  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;
+
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial)
+    ; //Wait for user to open terminal
+  Serial.println(F("SparkFun u-blox Example"));
+
+  Wire.begin();
+
+  //myGNSS.enableDebugging(); // Uncomment this line to enable debug messages
+
+  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)
+
+  // Create storage for the time pulse parameters
+  UBX_CFG_TP5_data_t timePulseParameters;
+
+  // Get the time pulse parameters
+  if (myGNSS.getTimePulseParameters(&timePulseParameters) == false)
+  {
+    Serial.println(F("getTimePulseParameters failed! Freezing..."));
+    while (1) ; // Do nothing more
+  }
+
+  timePulseParameters.tpIdx = 0; // Select the TIMEPULSE pin
+  //timePulseParameters.tpIdx = 1; // Or we could select the TIMEPULSE2 pin instead, if the module has one
+
+  // We can configure the time pulse pin to produce a defined frequency or period
+  // Here is how to set the frequency:
+  timePulseParameters.freqPeriod = 1000; // Set the frequency/period to 1000Hz
+  timePulseParameters.pulseLenRatio = 0x80000000; // Set the pulse ratio to 2^31 * 2^-32 to produce 50:50 mark:space
+
+  timePulseParameters.flags.bits.active = 1; // Make sure the active flag is set to enable the time pulse. (Set to 0 to disable.)
+  timePulseParameters.flags.bits.isFreq = 1; // Tell the module that we want to set the frequency (not the period)
+  timePulseParameters.flags.bits.isLength = 0; // Tell the module that pulseLenRatio is a ratio / duty cycle (2^-32) - not a length (in us)
+  timePulseParameters.flags.bits.polarity = 0; // Tell the module that we want the falling edge at the top of second. (Set to 1 for rising edge.)
+
+  // Now set the time pulse parameters
+  if (myGNSS.setTimePulseParameters(&timePulseParameters) == false)
+  {
+    Serial.println(F("setTimePulseParameters failed!"));
+  }
+  else
+  {
+    Serial.println(F("Success!"));
+  }
+}
+
+void loop()
+{
+  // Nothing to do here
+}