Add bluetooth support for obtaining NMEA about esp32-xbee HOT 12 OPEN

I ended up building a hat with another esp32 on it to do the Bluetooth serial connection from the main UART output.

In the the Arduino IDE the Bluetooth stack does take up a considerable amount of memory/flash so possibly having everything in the one package isn't feasible.

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I also would like this, The ESP32 has bluetooth, It would mean that to have bluetooth and a Ntrip connection wont need 2 extra hardware pieces.

The UART NEMA feed is there, Putting it over bluetooth hopefully is an easy addition.

I feel that I'm out of my depth to try and implement this myself.

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There are many Android apps which support Bluetooth, but not BLE GNSS receivers. Bluetooth support would enable these. We can't change our company to use a different software, so we must instead find a different module.

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While looking through the code, I noticed some code for bluetooth support. Is it possible to update with bluetooth functions?

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The astute reader will realize that this code is unmaintained; there hasn't been a release going on 4 years.

You may wish to see if the sparkfun code (which is maintained) can run on this device. I suspect it's not too hard, but haven't gotten around to trying.

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Although not open source,there's a BT+BLE functional code here, 100% compatible with the hardware:
https://www.ardusimple.com/btble-bridge-hookup-guide/
Here are the instructions to load the new firmware:
https://www.ardusimple.com/ble-bridge-firmware-update/

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@jolivart interesting. Looks like it can no longer do NTRIP, which means it isn't workable with QField. Plus, it's very disappointing to see Ardusimple moving away from open source.

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It actually works to have both wifi/NTRIP and bluetooth. https://github.com/sparkfun/SparkFun_RTK_Firmware/

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graememk

dear graememk. will you share the code? this would be great to develop an eps32 with an oled to have better control...

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graememk

dear graememk. will you share the code? this would be great to develop an eps32 with an oled to have better control...

Its brutally simple:

`
#include "BluetoothSerial.h"
#define RXD2 16
#define TXD2 17

BluetoothSerial SerialBT;

void setup() {
// put your setup code here, to run once:
SerialBT.begin("ArdusimpleGPS");
Serial.begin(115200);
Serial2.begin(115200, SERIAL_8N1, RXD2, TXD2);
}

void loop() {
// put your main code here, to run repeatedly:
while (Serial2.available()) {
char c = Serial2.read();
Serial.print(c);
SerialBT.print(c);

}

}`

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graememk

dear graememk. will you share the code? this would be great to develop an eps32 with an oled to have better control...

Its brutally simple:

` #include "BluetoothSerial.h" #define RXD2 16 #define TXD2 17

BluetoothSerial SerialBT;

void setup() { // put your setup code here, to run once: SerialBT.begin("ArdusimpleGPS"); Serial.begin(115200); Serial2.begin(115200, SERIAL_8N1, RXD2, TXD2); }

void loop() { // put your main code here, to run repeatedly: while (Serial2.available()) { char c = Serial2.read(); Serial.print(c); SerialBT.print(c);

}

wow, fast and simple. cool!

that should work with any esp32 with bluetooth?

and it’s hocked to rx/tx on the board?

probably it will also work with the mosaicHAT, right?

thanks a lot!!!!!!!!!!

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Hello, thanks for the code, Everything seems to be working correctly but I can't make the corrections through NTRIP, I always have the RTK FIX=SINGLE solution. How should I have the board configured?

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