unixweb/ttgo-t-beam-gps-ttn-tracker
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This commit is contained in:
Kyle Gabriel 2019-08-23 18:05:07 -04:00
parent 0e6586a55a
commit b8f6df7f53
4 changed files with 45 additions and 28 deletions
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19
README.md
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@ -21,7 +21,7 @@ Follow the directions at [espressif/arduino-esp32](https://github.com/espressif/
- [mikalhart/TinyGPSPlus](https://github.com/mikalhart/TinyGPSPlus)
- [ThingPulse/esp8266-oled-ssd1306](https://github.com/ThingPulse/esp8266-oled-ssd1306)
#### TTN Decoder
#### TTN Payload Decoder
```C
function Decoder(bytes, port) {
@ -29,22 +29,17 @@ function Decoder(bytes, port) {
decoded.latitude = ((bytes[0]<<16)>>>0) + ((bytes[1]<<8)>>>0) + bytes[2];
decoded.latitude = (decoded.latitude / 16777215.0 * 180) - 90;
decoded.longitude = ((bytes[3]<<16)>>>0) + ((bytes[4]<<8)>>>0) + bytes[5];
decoded.longitude = (decoded.longitude / 16777215.0 * 360) - 180;
var altValue = ((bytes[6]<<8)>>>0) + bytes[7];
var sign = bytes[6] & (1 << 7);
if(sign)
{
decoded.altitude = 0xFFFF0000 | altValue;
}
else
{
decoded.altitude = altValue;
}
if(sign) decoded.altitude = 0xFFFF0000 | altValue;
else decoded.altitude = altValue;
decoded.hdop = bytes[8] / 10.0;
decoded.sats = bytes[9] / 10.0;
return decoded;
}

31
main/configuration.h
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@ -39,6 +39,14 @@ void ttn_register(void (*callback)(uint8_t message));
// Configuration
// -----------------------------------------------------------------------------
// Select which T-Beam board is being used. Only uncomment one.
#define T_BEAM_V07 // AKA Rev0 (first board released)
// #define T_BEAM_V10 // AKA Rev1 (second board released)
// Select the payload format. Change on TTN as well. Only uncomment one.
#define PAYLOAD_USE_FULL
//#define PAYLOAD_USE_CAYENNE
#define DEBUG_PORT Serial // Serial debug port
#define SERIAL_BAUD 115200 // Serial debug baud rate
#define SLEEP_BETWEEN_MESSAGES 0 // Do sleep between messages
@ -51,10 +59,6 @@ void ttn_register(void (*callback)(uint8_t message));
#define LORAWAN_ADR 0 // Enable ADR
#define GPS_WAIT_FOR_LOCK 5000 // Wait 5s after every boot for GPS lock
// Only enable one payload format. Change on TTN as well.
#define PAYLOAD_USE_FULL
//#define PAYLOAD_USE_CAYENNE
// -----------------------------------------------------------------------------
// DEBUG
// -----------------------------------------------------------------------------
@ -94,11 +98,17 @@ void ttn_register(void (*callback)(uint8_t message));
// -----------------------------------------------------------------------------
#define GPS_SERIAL_NUM 1
#define GPS_RX_PIN 12
#define GPS_TX_PIN 15
#define GPS_BAUDRATE 9600
#define USE_GPS 1
#if defined(T_BEAM_V07)
#define GPS_RX_PIN 12
#define GPS_TX_PIN 15
#elif defined(T_BEAM_V10)
#define GPS_RX_PIN 34
#define GPS_TX_PIN 12
#endif
// -----------------------------------------------------------------------------
// LoRa SPI
// -----------------------------------------------------------------------------
@ -111,3 +121,12 @@ void ttn_register(void (*callback)(uint8_t message));
#define DIO0_GPIO 26
#define DIO1_GPIO 33
#define DIO2_GPIO 32
// -----------------------------------------------------------------------------
// Rev1-specific options
// -----------------------------------------------------------------------------
#if defined(T_BEAM_V10)
#define GPS_POWER_CTRL_CH 3
#define LORA_POWER_CTRL_CH 2
#endif

14
main/gps.ino
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@ -63,9 +63,10 @@ static void gps_loop() {
}
}
#ifdef PAYLOAD_USE_FULL
#if defined(PAYLOAD_USE_FULL)
// More data than PAYLOAD_USE_CAYENNE
void buildPacket(uint8_t txBuffer[9])
void buildPacket(uint8_t txBuffer[10])
{
LatitudeBinary = ((_gps.location.lat() + 90) / 180.0) * 16777215;
LongitudeBinary = ((_gps.location.lng() + 180) / 360.0) * 16777215;
@ -83,12 +84,14 @@ static void gps_loop() {
altitudeGps = _gps.altitude.meters();
txBuffer[6] = ( altitudeGps >> 8 ) & 0xFF;
txBuffer[7] = altitudeGps & 0xFF;
hdopGps = _gps.hdop.value()/10;
hdopGps = _gps.hdop.value() / 10;
txBuffer[8] = hdopGps & 0xFF;
sats = _gps.satellites.value() / 10;
txBuffer[9] = sats & 0xFF;
}
#endif
#ifdef PAYLOAD_USE_CAYENNE
#elif defined(PAYLOAD_USE_CAYENNE)
// CAYENNE DF
void buildPacket(uint8_t txBuffer[11])
{
@ -112,4 +115,5 @@ static void gps_loop() {
txBuffer[9] = alt >> 8;
txBuffer[10] = alt;
}
#endif

9
main/main.ino
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@ -31,11 +31,10 @@ RTC_DATA_ATTR uint32_t count = 0;
// -----------------------------------------------------------------------------
#include <TinyGPS++.h>
#ifdef PAYLOAD_USE_FULL
uint8_t txBuffer[9];
#endif
#ifdef PAYLOAD_USE_CAYENNE
#if defined(PAYLOAD_USE_FULL)
// includes number of satellites and accuracy
uint8_t txBuffer[10];
#elif defined(PAYLOAD_USE_CAYENNE)
// CAYENNE DF
static uint8_t txBuffer[11] = {0x03, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
#endif