PlatformIO-Libs/SparkFunGNSS
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Move snprintf to work with any architecture.

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This commit is contained in:
Nathan Seidle
2021-12-12 21:46:36 -07:00
parent 1b3f033792
commit 356a43ded6
1 changed files with 30 additions and 27 deletions
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examples/ZED-F9P/Example16_NTRIPClient_WithGGA/Example16_NTRIPClient_WithGGA.ino
+30 -27
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@@ -15,16 +15,16 @@
You will need to have a valid mountpoint available. To see available mountpoints go here: http://rtk2go.com:2101/
This is a proof of concept to show how to connect to a caster via HTTP.
This is a proof of concept to show how to connect to a caster via HTTP.
For more information about NTRIP Clients and the differences between Rev1 and Rev2 of the protocol
please see: https://www.use-snip.com/kb/knowledge-base/ntrip-rev1-versus-rev2-formats/
"In broad protocol terms, the NTRIP client must first connect (get an HTTP “OK” reply) and only then
should it send the sentence. NTRIP protocol revision 2 (which does not have very broad industry
"In broad protocol terms, the NTRIP client must first connect (get an HTTP “OK” reply) and only then
should it send the sentence. NTRIP protocol revision 2 (which does not have very broad industry
acceptance at this time) does allow sending the sentence in the original header."
https://www.use-snip.com/kb/knowledge-base/subtle-issues-with-using-ntrip-client-nmea-183-strings/
Feel like supporting open source hardware?
Buy a board from SparkFun!
ZED-F9P RTK2: https://www.sparkfun.com/products/16481
@@ -52,10 +52,10 @@ SFE_UBLOX_GNSS myGNSS;
//Global variables
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
long lastReceivedRTCM_ms = 0; //5 RTCM messages take approximately ~300ms to arrive at 115200bps
long lastReceivedRTCM_ms = 0; //5 RTCM messages take approximately ~300ms to arrive at 115200bps
int maxTimeBeforeHangup_ms = 10000; //If we fail to get a complete RTCM frame after 10s, then disconnect from caster
bool transmitLocation = true; //By default we will transmit the units location via GGA sentence.
bool transmitLocation = true; //By default we will transmit the units location via GGA sentence.
int timeBetweenGGAUpdate_ms = 10000; //GGA is required for Rev2 NTRIP casters. Don't transmit but once every 10 seconds
long lastTransmittedGGA_ms = 0;
@@ -76,7 +76,7 @@ void setup()
Wire.begin(); //Start I2C
while(myGNSS.begin() == false) //Connect to the Ublox module using Wire port
while (myGNSS.begin() == false) //Connect to the Ublox module using Wire port
{
Serial.println(F("u-blox GPS not detected at default I2C address. Please check wiring. Freezing."));
delay(2000);
@@ -84,7 +84,7 @@ void setup()
}
Serial.println(F("u-blox module connected"));
myGNSS.setI2COutput(COM_TYPE_UBX | COM_TYPE_NMEA); //Set the I2C port to output both NMEA and UBX messages
myGNSS.setI2COutput(COM_TYPE_UBX | COM_TYPE_NMEA); //Set the I2C port to output both NMEA and UBX messages
myGNSS.setPortInput(COM_PORT_I2C, COM_TYPE_UBX | COM_TYPE_NMEA | COM_TYPE_RTCM3); //Be sure RTCM3 input is enabled. UBX + RTCM3 is not a valid state.
myGNSS.enableNMEAMessage(UBX_NMEA_GGA, COM_PORT_I2C); //Verify the GGA sentence is enabled
@@ -93,7 +93,8 @@ void setup()
Serial.print(F("Connecting to local WiFi"));
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(F("."));
}
@@ -102,7 +103,8 @@ void setup()
Serial.print(F("WiFi connected with IP: "));
Serial.println(WiFi.localIP());
while (Serial.available()) Serial.read();
while (Serial.available())
Serial.read();
}
void loop()
@@ -110,7 +112,8 @@ void loop()
if (Serial.available())
{
beginClient();
while (Serial.available()) Serial.read(); //Empty buffer of any newline chars
while (Serial.available())
Serial.read(); //Empty buffer of any newline chars
}
Serial.println(F("Press any key to start NTRIP Client."));
@@ -126,12 +129,13 @@ void beginClient()
Serial.println(F("Subscribing to Caster. Press key to stop"));
delay(10); //Wait for any serial to arrive
while (Serial.available()) Serial.read(); //Flush
while (Serial.available())
Serial.read(); //Flush
while (Serial.available() == 0)
{
myGNSS.checkUblox();
//Connect if we are not already. Limit to 5s between attempts.
if (ntripClient.connected() == false)
{
@@ -181,13 +185,14 @@ void beginClient()
String strEncodedCredentials = b.encode(userCredentials);
char encodedCredentials[strEncodedCredentials.length() + 1];
strEncodedCredentials.toCharArray(encodedCredentials, sizeof(encodedCredentials)); //Convert String to char array
snprintf(credentials, sizeof(credentials), "Authorization: Basic %s\r\n", encodedCredentials);
#else
//Encode with nfriendly library
int encodedLen = base64_enc_len(strlen(userCredentials));
char encodedCredentials[encodedLen]; //Create array large enough to house encoded data
char encodedCredentials[encodedLen]; //Create array large enough to house encoded data
base64_encode(encodedCredentials, userCredentials, strlen(userCredentials)); //Note: Input array is consumed
#endif
snprintf(credentials, sizeof(credentials), "Authorization: Basic %s\r\n", encodedCredentials);
}
strncat(serverRequest, credentials, SERVER_BUFFER_SIZE);
strncat(serverRequest, "\r\n", SERVER_BUFFER_SIZE);
@@ -221,7 +226,8 @@ void beginClient()
int responseSpot = 0;
while (ntripClient.available())
{
if (responseSpot == sizeof(response) - 1) break;
if (responseSpot == sizeof(response) - 1)
break;
response[responseSpot++] = ntripClient.read();
if (strstr(response, "200") > 0) //Look for '200 OK'
@@ -248,10 +254,10 @@ void beginClient()
Serial.print(F("Connected to "));
Serial.println(casterHost);
lastReceivedRTCM_ms = millis(); //Reset timeout
ggaTransmitComplete = true; //Reset to start polling for new GGA data
ggaTransmitComplete = true; //Reset to start polling for new GGA data
}
} //End attempt to connect
} //End connected == false
} //End connected == false
if (ntripClient.connected() == true)
{
@@ -263,7 +269,8 @@ void beginClient()
{
//Serial.write(ntripClient.read()); //Pipe to serial port is fine but beware, it's a lot of binary data
rtcmData[rtcmCount++] = ntripClient.read();
if (rtcmCount == sizeof(rtcmData)) break;
if (rtcmCount == sizeof(rtcmData))
break;
}
if (rtcmCount > 0)
@@ -278,12 +285,7 @@ void beginClient()
}
//Provide the caster with our current position as needed
if (ntripClient.connected() == true
&& transmitLocation == true
&& (millis() - lastTransmittedGGA_ms) > timeBetweenGGAUpdate_ms
&& ggaSentenceComplete == true
&& ggaTransmitComplete == false
)
if (ntripClient.connected() == true && transmitLocation == true && (millis() - lastTransmittedGGA_ms) > timeBetweenGGAUpdate_ms && ggaSentenceComplete == true && ggaTransmitComplete == false)
{
Serial.print(F("Pushing GGA to server: "));
Serial.println(ggaSentence);
@@ -315,7 +317,8 @@ void beginClient()
int responseSpot = 0;
while (ntripClient.available())
{
if (responseSpot == sizeof(response) - 1) break;
if (responseSpot == sizeof(response) - 1)
break;
response[responseSpot++] = ntripClient.read();
if (strstr(response, "200") > 0) //Look for '200 OK'
@@ -397,4 +400,4 @@ void SFE_UBLOX_GNSS::processNMEA(char incoming)
ggaSentenceStarted = false;
}
}
}
}