|
| 1 | +/* |
| 2 | + Send UBX binary commands to enable RTCM sentences on Ublox NEO-M8P-2 module |
| 3 | + By: Nathan Seidle |
| 4 | + SparkFun Electronics |
| 5 | + Date: September 7th, 2018 |
| 6 | + License: MIT. See license file for more information but you can |
| 7 | + basically do whatever you want with this code. |
| 8 | +
|
| 9 | + This example does all steps to configure and enable a NEO-M8P-2 as a base station: |
| 10 | + Begin Survey-In |
| 11 | + Once we've achieved 2m accuracy and 300s have passed, survey is complete |
| 12 | + Enable four RTCM messages |
| 13 | + Begin outputting RTCM bytes |
| 14 | +
|
| 15 | + Feel like supporting open source hardware? |
| 16 | + Buy a board from SparkFun! https://www.sparkfun.com/products/14980 |
| 17 | +
|
| 18 | + Hardware Connections: |
| 19 | + Plug a Qwiic cable into the GPS and a BlackBoard |
| 20 | + Plug a SerLCD onto the Qwiic bus |
| 21 | + If you don't have a platform with a Qwiic connection use the SparkFun Qwiic Breadboard Jumper (https://www.sparkfun.com/products/14425) |
| 22 | + Watch the output on the LCD or open the serial monitor at 115200 baud to see the output |
| 23 | +*/ |
| 24 | + |
| 25 | +#define STAT_LED 13 |
| 26 | + |
| 27 | +#include <Wire.h> //Needed for I2C to GPS |
| 28 | + |
| 29 | +#include "SparkFun_Ublox_Arduino_Library.h" //Click here to get the library: http://librarymanager/All#SparkFun_Ublox_GPS |
| 30 | +SFE_UBLOX_GPS myGPS; |
| 31 | + |
| 32 | +#include <SerLCD.h> //Click here to get the library: http://librarymanager/All#SparkFun_SerLCD |
| 33 | +SerLCD lcd; // Initialize the library with default I2C address 0x72 |
| 34 | + |
| 35 | +void setup() |
| 36 | +{ |
| 37 | + Serial.begin(115200); |
| 38 | + while (!Serial); //Wait for user to open terminal |
| 39 | + Serial.println("Ublox GPS I2C Test"); |
| 40 | + |
| 41 | + pinMode(STAT_LED, OUTPUT); |
| 42 | + digitalWrite(STAT_LED, LOW); |
| 43 | + |
| 44 | + lcd.begin(Wire); //Set up the LCD for Serial communication at 9600bps |
| 45 | + lcd.setBacklight(0x4B0082); //indigo, a kind of dark purplish blue |
| 46 | + lcd.clear(); |
| 47 | + lcd.print(F("LCD Ready")); |
| 48 | + |
| 49 | + myGPS.begin(Wire); |
| 50 | + if (myGPS.isConnected() == false) |
| 51 | + { |
| 52 | + Serial.println(F("Ublox GPS not detected at default I2C address. Please check wiring. Freezing.")); |
| 53 | + lcd.setCursor(0, 1); |
| 54 | + lcd.print(F("No GPS detected")); |
| 55 | + while (1); |
| 56 | + } |
| 57 | + |
| 58 | + Wire.setClock(400000); //Increase I2C clock speed to 400kHz |
| 59 | + |
| 60 | + lcd.setCursor(0, 1); |
| 61 | + lcd.print("GPS Detected"); |
| 62 | + |
| 63 | + //Check if Survey is in Progress before initiating one |
| 64 | + boolean response; |
| 65 | + response = myGPS.getSurveyStatus(2000); //Query module for SVIN status with 2000ms timeout (request can take a long time) |
| 66 | + if (response == false) |
| 67 | + { |
| 68 | + Serial.println(F("Failed to get Survey In status")); |
| 69 | + while (1); //Freeze |
| 70 | + } |
| 71 | + |
| 72 | + if (myGPS.svin.active == true) |
| 73 | + { |
| 74 | + Serial.print(F("Survey already in progress.")); |
| 75 | + lcd.setCursor(0, 2); |
| 76 | + lcd.print(F("Survey already going")); |
| 77 | + } |
| 78 | + else |
| 79 | + { |
| 80 | + //Start survey |
| 81 | + response = myGPS.enableSurveyMode(300, 2.000); //Enable Survey in, 300 seconds, 2.0m |
| 82 | + if (response == false) |
| 83 | + { |
| 84 | + Serial.println(F("Survey start failed")); |
| 85 | + lcd.setCursor(0, 3); |
| 86 | + lcd.print(F("Survey start failed")); |
| 87 | + while (1); |
| 88 | + } |
| 89 | + Serial.println(F("Survey started. This will run until 300s has passed and less than 2m accuracy is achieved.")); |
| 90 | + } |
| 91 | + |
| 92 | + while (Serial.available()) Serial.read(); //Clear buffer |
| 93 | + |
| 94 | + lcd.clear(); |
| 95 | + lcd.print(F("Survey in progress")); |
| 96 | + |
| 97 | + //Begin waiting for survey to complete |
| 98 | + while (myGPS.svin.valid == false) |
| 99 | + { |
| 100 | + if (Serial.available()) |
| 101 | + { |
| 102 | + byte incoming = Serial.read(); |
| 103 | + if (incoming == 'x') |
| 104 | + { |
| 105 | + //Stop survey mode |
| 106 | + response = myGPS.disableSurveyMode(); //Disable survey |
| 107 | + Serial.println(F("Survey stopped")); |
| 108 | + break; |
| 109 | + } |
| 110 | + } |
| 111 | + |
| 112 | + response = myGPS.getSurveyStatus(2000); //Query module for SVIN status with 2000ms timeout (req can take a long time) |
| 113 | + if (response == true) |
| 114 | + { |
| 115 | + Serial.print(F("Press x to end survey - ")); |
| 116 | + Serial.print(F("Time elapsed: ")); |
| 117 | + Serial.print((String)myGPS.svin.observationTime); |
| 118 | + |
| 119 | + lcd.setCursor(0, 1); |
| 120 | + lcd.print(F("Elapsed: ")); |
| 121 | + lcd.print((String)myGPS.svin.observationTime); |
| 122 | + |
| 123 | + Serial.print(F(" Accuracy: ")); |
| 124 | + Serial.print((String)myGPS.svin.meanAccuracy); |
| 125 | + Serial.println(); |
| 126 | + |
| 127 | + lcd.setCursor(0, 2); |
| 128 | + lcd.print(F("Accuracy: ")); |
| 129 | + lcd.print((String)myGPS.svin.meanAccuracy); |
| 130 | + } |
| 131 | + else |
| 132 | + { |
| 133 | + Serial.println(F("SVIN request failed")); |
| 134 | + } |
| 135 | + |
| 136 | + delay(1000); |
| 137 | + } |
| 138 | + Serial.println(F("Survey valid!")); |
| 139 | + |
| 140 | + response = true; |
| 141 | + response &= myGPS.enableRTCMmessage(UBX_RTCM_1005, UBX_RTCM_I2C_PORT, 1); //Enable message 1005 to output through I2C port, message every second |
| 142 | + response &= myGPS.enableRTCMmessage(UBX_RTCM_1077, UBX_RTCM_I2C_PORT, 1); |
| 143 | + response &= myGPS.enableRTCMmessage(UBX_RTCM_1087, UBX_RTCM_I2C_PORT, 1); |
| 144 | + response &= myGPS.enableRTCMmessage(UBX_RTCM_1230, UBX_RTCM_I2C_PORT, 10); //Enable message every 10 seconds |
| 145 | + |
| 146 | + if (response == true) |
| 147 | + { |
| 148 | + Serial.println(F("RTCM messages enabled")); |
| 149 | + } |
| 150 | + else |
| 151 | + { |
| 152 | + Serial.println(F("RTCM failed to enable. Are you sure you have an NEO-M8P?")); |
| 153 | + while (1); //Freeze |
| 154 | + } |
| 155 | + |
| 156 | + Serial.println(F("Base survey complete! RTCM now broadcasting.")); |
| 157 | + lcd.clear(); |
| 158 | + lcd.print(F("Transmitting RTCM")); |
| 159 | +} |
| 160 | + |
| 161 | +void loop() |
| 162 | +{ |
| 163 | + myGPS.checkUblox(); //See if new data is available. Process bytes as they come in. |
| 164 | + |
| 165 | + //Do anything you want. Call checkUblox() every second. NEO-M8P-2 has TX buffer of 4k bytes. |
| 166 | + |
| 167 | + delay(250); //Don't pound too hard on the I2C bus |
| 168 | +} |
| 169 | + |
| 170 | +//This function gets called from the SparkFun Ublox Arduino Library. |
| 171 | +//As each RTCM byte comes in you can specify what to do with it |
| 172 | +//Useful for passing the RTCM correction data to a radio, Ntrip broadcaster, etc. |
| 173 | +void SFE_UBLOX_GPS::processRTCM(uint8_t incoming) |
| 174 | +{ |
| 175 | + //Let's just pretty-print the HEX values for now |
| 176 | + if (myGPS.rtcmFrameCounter % 16 == 0) Serial.println(); |
| 177 | + Serial.print(" "); |
| 178 | + if (incoming < 0x10) Serial.print("0"); |
| 179 | + Serial.print(incoming, HEX); |
| 180 | +} |
| 181 | + |
0 commit comments