diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
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+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
+
diff --git a/README.md b/README.md
index ebb56e3..fb8bffe 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,13 @@
-ttgo-tbeam-ttnmapper
+# TTN MAPPER-TRACKER
+
+### Based on the code from [xoseperez/ttgo-beam-tracker](https://github.com/xoseperez/ttgo-beam-tracker), with excerpts from [dermatthias/Lora-TTNMapper-T-Beam](https://github.com/dermatthias/Lora-TTNMapper-T-Beam) to fix an issue with incorrect GPS data being transmitted to The Things Network. I aslo added support for the US 915 MHz frequency, which is now enabled by default but can easily be changed.
+
+This is a LoRaWAN node based on the [TTGO T-Beam](https://github.com/LilyGO/TTGO-T-Beam) development platform.
+It uses a RFM95 by HopeRF and the MCCI LoRaWAN LMIC stack.
+The sample code is configured to connect to The Things Network using EU frequency, but you can easily change that.
+
+Arduino Library Dependencies:
+
+[mcci-catena/arduino-lmic](https://github.com/mcci-catena/arduino-lmic)
+[mikalhart/TinyGPSPlus](https://github.com/mikalhart/TinyGPSPlus)
+[ThingPulse/esp8266-oled-ssd1306](https://github.com/ThingPulse/esp8266-oled-ssd1306)
diff --git a/src/configuration.h b/src/configuration.h
new file mode 100644
index 0000000..2d066b2
--- /dev/null
+++ b/src/configuration.h
@@ -0,0 +1,109 @@
+/*
+
+TTGO-BEAM based TTN Tracker
+
+Copyright (C) 2018 by Xose Pérez
+
+This code requires LMIC library by Matthijs Kooijman
+https://github.com/matthijskooijman/arduino-lmic
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+
+*/
+
+#pragma once
+
+#include
+#include
+
+void ttn_register(void (*callback)(uint8_t message));
+
+// -----------------------------------------------------------------------------
+// Version
+// -----------------------------------------------------------------------------
+
+#define APP_NAME "TTN MAP-TRACK"
+#define APP_VERSION "1.0.0"
+
+// -----------------------------------------------------------------------------
+// Configuration
+// -----------------------------------------------------------------------------
+
+#define DEBUG_PORT Serial // Serial debug port
+#define SERIAL_BAUD 115200 // Serial debug baud rate
+#define SLEEP_BETWEEN_MESSAGES 0 // Do sleep between messages
+#define SEND_INTERVAL 30000 // Sleep for these many millis
+#define MESSAGE_TO_SLEEP_DELAY 5000 // Time after message before going to sleep
+#define LOGO_DELAY 5000 // Time to show logo on first boot
+#define LORAWAN_PORT 10 // Port the messages will be sent to
+#define LORAWAN_CONFIRMED_EVERY 0 // Send confirmed message every these many messages (0 means never)
+#define LORAWAN_SF DR_SF7 // Spreading factor
+#define LORAWAN_ADR 0 // Enable ADR
+#define GPS_WAIT_FOR_LOCK 5000 // Wait 5s after every boot for GPS lock
+
+// -----------------------------------------------------------------------------
+// DEBUG
+// -----------------------------------------------------------------------------
+
+#ifdef DEBUG_PORT
+#define DEBUG_MSG(...) DEBUG_PORT.printf( __VA_ARGS__ )
+#else
+#define DEBUG_MSG(...)
+#endif
+
+// -----------------------------------------------------------------------------
+// Custom messages
+// -----------------------------------------------------------------------------
+
+#define EV_QUEUED 100
+#define EV_PENDING 101
+#define EV_ACK 102
+#define EV_RESPONSE 103
+
+// -----------------------------------------------------------------------------
+// General
+// -----------------------------------------------------------------------------
+
+#define BUTTON_PIN 39
+#define LED_PIN 14
+
+// -----------------------------------------------------------------------------
+// OLED
+// -----------------------------------------------------------------------------
+
+#define OLED_ADDRESS 0x3C
+#define OLED_SDA 21
+#define OLED_SCL 22
+
+// -----------------------------------------------------------------------------
+// GPS
+// -----------------------------------------------------------------------------
+
+#define GPS_SERIAL_NUM 1
+#define GPS_RX_PIN 12
+#define GPS_TX_PIN 15
+#define GPS_BAUDRATE 9600
+
+// -----------------------------------------------------------------------------
+// LoRa SPI
+// -----------------------------------------------------------------------------
+
+#define SCK_GPIO 5
+#define MISO_GPIO 19
+#define MOSI_GPIO 27
+#define NSS_GPIO 18
+#define RESET_GPIO 23
+#define DIO0_GPIO 26
+#define DIO1_GPIO 33
+#define DIO2_GPIO 32
diff --git a/src/credentials.h b/src/credentials.h
new file mode 100644
index 0000000..b9e746d
--- /dev/null
+++ b/src/credentials.h
@@ -0,0 +1,42 @@
+/*
+
+Credentials file
+
+*/
+
+#pragma once
+
+// Only one of these settings must be defined
+#define USE_ABP
+//#define USE_OTAA
+
+#ifdef USE_ABP
+
+ // LoRaWAN NwkSKey, network session key
+ static const u1_t PROGMEM NWKSKEY[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ // LoRaWAN AppSKey, application session key
+ static const u1_t PROGMEM APPSKEY[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ // LoRaWAN end-device address (DevAddr)
+ // This has to be unique for every node
+ static const u4_t DEVADDR = 0x00000000;
+
+#endif
+
+#ifdef USE_OTAA
+
+ // This EUI must be in little-endian format, so least-significant-byte
+ // first. When copying an EUI from ttnctl output, this means to reverse
+ // the bytes. For TTN issued EUIs the last bytes should be 0x00, 0x00,
+ // 0x00.
+ static const u1_t PROGMEM APPEUI[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+ // This should also be in little endian format, see above.
+ static const u1_t PROGMEM DEVEUI[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+ // This key should be in big endian format (or, since it is not really a
+ // number but a block of memory, endianness does not really apply). In
+ // practice, a key taken from ttnctl can be copied as-is.
+ // The key shown here is the semtech default key.
+ static const u1_t PROGMEM APPKEY[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+#endif
diff --git a/src/fonts.h b/src/fonts.h
new file mode 100644
index 0000000..05c9bff
--- /dev/null
+++ b/src/fonts.h
@@ -0,0 +1,423 @@
+const uint8_t Custom_ArialMT_Plain_10[] PROGMEM = {
+ 0x0A, // Width: 10
+ 0x0A, // Height: 10
+ 0x20, // First Char: 32
+ 0xE0, // Numbers of Chars: 224
+
+ // Jump Table:
+ 0xFF, 0xFF, 0x00, 0x03, // 32:65535
+ 0x00, 0x00, 0x04, 0x03, // 33:0
+ 0x00, 0x04, 0x05, 0x04, // 34:4
+ 0x00, 0x09, 0x09, 0x06, // 35:9
+ 0x00, 0x12, 0x0A, 0x06, // 36:18
+ 0x00, 0x1C, 0x10, 0x09, // 37:28
+ 0x00, 0x2C, 0x0E, 0x07, // 38:44
+ 0x00, 0x3A, 0x01, 0x02, // 39:58
+ 0x00, 0x3B, 0x06, 0x03, // 40:59
+ 0x00, 0x41, 0x06, 0x03, // 41:65
+ 0x00, 0x47, 0x05, 0x04, // 42:71
+ 0x00, 0x4C, 0x09, 0x06, // 43:76
+ 0x00, 0x55, 0x04, 0x03, // 44:85
+ 0x00, 0x59, 0x03, 0x03, // 45:89
+ 0x00, 0x5C, 0x04, 0x03, // 46:92
+ 0x00, 0x60, 0x05, 0x03, // 47:96
+ 0x00, 0x65, 0x0A, 0x06, // 48:101
+ 0x00, 0x6F, 0x08, 0x06, // 49:111
+ 0x00, 0x77, 0x0A, 0x06, // 50:119
+ 0x00, 0x81, 0x0A, 0x06, // 51:129
+ 0x00, 0x8B, 0x0B, 0x06, // 52:139
+ 0x00, 0x96, 0x0A, 0x06, // 53:150
+ 0x00, 0xA0, 0x0A, 0x06, // 54:160
+ 0x00, 0xAA, 0x09, 0x06, // 55:170
+ 0x00, 0xB3, 0x0A, 0x06, // 56:179
+ 0x00, 0xBD, 0x0A, 0x06, // 57:189
+ 0x00, 0xC7, 0x04, 0x03, // 58:199
+ 0x00, 0xCB, 0x04, 0x03, // 59:203
+ 0x00, 0xCF, 0x0A, 0x06, // 60:207
+ 0x00, 0xD9, 0x09, 0x06, // 61:217
+ 0x00, 0xE2, 0x09, 0x06, // 62:226
+ 0x00, 0xEB, 0x0B, 0x06, // 63:235
+ 0x00, 0xF6, 0x14, 0x0A, // 64:246
+ 0x01, 0x0A, 0x0E, 0x07, // 65:266
+ 0x01, 0x18, 0x0C, 0x07, // 66:280
+ 0x01, 0x24, 0x0C, 0x07, // 67:292
+ 0x01, 0x30, 0x0B, 0x07, // 68:304
+ 0x01, 0x3B, 0x0C, 0x07, // 69:315
+ 0x01, 0x47, 0x09, 0x06, // 70:327
+ 0x01, 0x50, 0x0D, 0x08, // 71:336
+ 0x01, 0x5D, 0x0C, 0x07, // 72:349
+ 0x01, 0x69, 0x04, 0x03, // 73:361
+ 0x01, 0x6D, 0x08, 0x05, // 74:365
+ 0x01, 0x75, 0x0E, 0x07, // 75:373
+ 0x01, 0x83, 0x0C, 0x06, // 76:387
+ 0x01, 0x8F, 0x10, 0x08, // 77:399
+ 0x01, 0x9F, 0x0C, 0x07, // 78:415
+ 0x01, 0xAB, 0x0E, 0x08, // 79:427
+ 0x01, 0xB9, 0x0B, 0x07, // 80:441
+ 0x01, 0xC4, 0x0E, 0x08, // 81:452
+ 0x01, 0xD2, 0x0C, 0x07, // 82:466
+ 0x01, 0xDE, 0x0C, 0x07, // 83:478
+ 0x01, 0xEA, 0x0B, 0x06, // 84:490
+ 0x01, 0xF5, 0x0C, 0x07, // 85:501
+ 0x02, 0x01, 0x0D, 0x07, // 86:513
+ 0x02, 0x0E, 0x11, 0x09, // 87:526
+ 0x02, 0x1F, 0x0E, 0x07, // 88:543
+ 0x02, 0x2D, 0x0D, 0x07, // 89:557
+ 0x02, 0x3A, 0x0C, 0x06, // 90:570
+ 0x02, 0x46, 0x06, 0x03, // 91:582
+ 0x02, 0x4C, 0x06, 0x03, // 92:588
+ 0x02, 0x52, 0x04, 0x03, // 93:594
+ 0x02, 0x56, 0x09, 0x05, // 94:598
+ 0x02, 0x5F, 0x0C, 0x06, // 95:607
+ 0x02, 0x6B, 0x03, 0x03, // 96:619
+ 0x02, 0x6E, 0x0A, 0x06, // 97:622
+ 0x02, 0x78, 0x0A, 0x06, // 98:632
+ 0x02, 0x82, 0x0A, 0x05, // 99:642
+ 0x02, 0x8C, 0x0A, 0x06, // 100:652
+ 0x02, 0x96, 0x0A, 0x06, // 101:662
+ 0x02, 0xA0, 0x05, 0x03, // 102:672
+ 0x02, 0xA5, 0x0A, 0x06, // 103:677
+ 0x02, 0xAF, 0x0A, 0x06, // 104:687
+ 0x02, 0xB9, 0x04, 0x02, // 105:697
+ 0x02, 0xBD, 0x04, 0x02, // 106:701
+ 0x02, 0xC1, 0x08, 0x05, // 107:705
+ 0x02, 0xC9, 0x04, 0x02, // 108:713
+ 0x02, 0xCD, 0x10, 0x08, // 109:717
+ 0x02, 0xDD, 0x0A, 0x06, // 110:733
+ 0x02, 0xE7, 0x0A, 0x06, // 111:743
+ 0x02, 0xF1, 0x0A, 0x06, // 112:753
+ 0x02, 0xFB, 0x0A, 0x06, // 113:763
+ 0x03, 0x05, 0x05, 0x03, // 114:773
+ 0x03, 0x0A, 0x08, 0x05, // 115:778
+ 0x03, 0x12, 0x06, 0x03, // 116:786
+ 0x03, 0x18, 0x0A, 0x06, // 117:792
+ 0x03, 0x22, 0x09, 0x05, // 118:802
+ 0x03, 0x2B, 0x0E, 0x07, // 119:811
+ 0x03, 0x39, 0x0A, 0x05, // 120:825
+ 0x03, 0x43, 0x09, 0x05, // 121:835
+ 0x03, 0x4C, 0x0A, 0x05, // 122:844
+ 0x03, 0x56, 0x06, 0x03, // 123:854
+ 0x03, 0x5C, 0x04, 0x03, // 124:860
+ 0x03, 0x60, 0x05, 0x03, // 125:864
+ 0x03, 0x65, 0x09, 0x06, // 126:869
+ 0xFF, 0xFF, 0x00, 0x00, // 127:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 128:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 129:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 130:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 131:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 132:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 133:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 134:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 135:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 136:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 137:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 138:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 139:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 140:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 141:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 142:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 143:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 144:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 145:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 146:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 147:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 148:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 149:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 150:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 151:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 152:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 153:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 154:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 155:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 156:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 157:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 158:65535
+ 0xFF, 0xFF, 0x00, 0x0A, // 159:65535
+ 0xFF, 0xFF, 0x00, 0x03, // 160:65535
+ 0x03, 0x6E, 0x04, 0x03, // 161:878
+ 0x03, 0x72, 0x0A, 0x06, // 162:882
+ 0x03, 0x7C, 0x0C, 0x06, // 163:892
+ 0x03, 0x88, 0x0A, 0x06, // 164:904
+ 0x03, 0x92, 0x0A, 0x06, // 165:914
+ 0x03, 0x9C, 0x04, 0x03, // 166:924
+ 0x03, 0xA0, 0x0A, 0x06, // 167:928
+ 0x03, 0xAA, 0x05, 0x03, // 168:938
+ 0x03, 0xAF, 0x0D, 0x07, // 169:943
+ 0x03, 0xBC, 0x07, 0x04, // 170:956
+ 0x03, 0xC3, 0x0A, 0x06, // 171:963
+ 0x03, 0xCD, 0x09, 0x06, // 172:973
+ 0x03, 0xD6, 0x03, 0x03, // 173:982
+ 0x03, 0xD9, 0x0D, 0x07, // 174:985
+ 0x03, 0xE6, 0x0B, 0x06, // 175:998
+ 0x03, 0xF1, 0x07, 0x04, // 176:1009
+ 0x03, 0xF8, 0x0A, 0x05, // 177:1016
+ 0x04, 0x02, 0x05, 0x03, // 178:1026
+ 0x04, 0x07, 0x05, 0x03, // 179:1031
+ 0x04, 0x0C, 0x05, 0x03, // 180:1036
+ 0x04, 0x11, 0x0A, 0x06, // 181:1041
+ 0x04, 0x1B, 0x09, 0x05, // 182:1051
+ 0x04, 0x24, 0x03, 0x03, // 183:1060
+ 0x04, 0x27, 0x06, 0x03, // 184:1063
+ 0x04, 0x2D, 0x05, 0x03, // 185:1069
+ 0x04, 0x32, 0x07, 0x04, // 186:1074
+ 0x04, 0x39, 0x0A, 0x06, // 187:1081
+ 0x04, 0x43, 0x10, 0x08, // 188:1091
+ 0x04, 0x53, 0x10, 0x08, // 189:1107
+ 0x04, 0x63, 0x10, 0x08, // 190:1123
+ 0x04, 0x73, 0x0A, 0x06, // 191:1139
+ 0x04, 0x7D, 0x0E, 0x07, // 192:1149
+ 0x04, 0x8B, 0x0E, 0x07, // 193:1163
+ 0x04, 0x99, 0x0E, 0x07, // 194:1177
+ 0x04, 0xA7, 0x0E, 0x07, // 195:1191
+ 0x04, 0xB5, 0x0E, 0x07, // 196:1205
+ 0x04, 0xC3, 0x0E, 0x07, // 197:1219
+ 0x04, 0xD1, 0x12, 0x0A, // 198:1233
+ 0x04, 0xE3, 0x0C, 0x07, // 199:1251
+ 0x04, 0xEF, 0x0C, 0x07, // 200:1263
+ 0x04, 0xFB, 0x0C, 0x07, // 201:1275
+ 0x05, 0x07, 0x0C, 0x07, // 202:1287
+ 0x05, 0x13, 0x0C, 0x07, // 203:1299
+ 0x05, 0x1F, 0x05, 0x03, // 204:1311
+ 0x05, 0x24, 0x04, 0x03, // 205:1316
+ 0x05, 0x28, 0x04, 0x03, // 206:1320
+ 0x05, 0x2C, 0x05, 0x03, // 207:1324
+ 0x05, 0x31, 0x0B, 0x07, // 208:1329
+ 0x05, 0x3C, 0x0C, 0x07, // 209:1340
+ 0x05, 0x48, 0x0E, 0x08, // 210:1352
+ 0x05, 0x56, 0x0E, 0x08, // 211:1366
+ 0x05, 0x64, 0x0E, 0x08, // 212:1380
+ 0x05, 0x72, 0x0E, 0x08, // 213:1394
+ 0x05, 0x80, 0x0E, 0x08, // 214:1408
+ 0x05, 0x8E, 0x0A, 0x06, // 215:1422
+ 0x05, 0x98, 0x0D, 0x08, // 216:1432
+ 0x05, 0xA5, 0x0C, 0x07, // 217:1445
+ 0x05, 0xB1, 0x0C, 0x07, // 218:1457
+ 0x05, 0xBD, 0x0C, 0x07, // 219:1469
+ 0x05, 0xC9, 0x0C, 0x07, // 220:1481
+ 0x05, 0xD5, 0x0D, 0x07, // 221:1493
+ 0x05, 0xE2, 0x0B, 0x07, // 222:1506
+ 0x05, 0xED, 0x0C, 0x06, // 223:1517
+ 0x05, 0xF9, 0x0A, 0x06, // 224:1529
+ 0x06, 0x03, 0x0A, 0x06, // 225:1539
+ 0x06, 0x0D, 0x0A, 0x06, // 226:1549
+ 0x06, 0x17, 0x0A, 0x06, // 227:1559
+ 0x06, 0x21, 0x0A, 0x06, // 228:1569
+ 0x06, 0x2B, 0x0A, 0x06, // 229:1579
+ 0x06, 0x35, 0x10, 0x09, // 230:1589
+ 0x06, 0x45, 0x0A, 0x05, // 231:1605
+ 0x06, 0x4F, 0x0A, 0x06, // 232:1615
+ 0x06, 0x59, 0x0A, 0x06, // 233:1625
+ 0x06, 0x63, 0x0A, 0x06, // 234:1635
+ 0x06, 0x6D, 0x0A, 0x06, // 235:1645
+ 0x06, 0x77, 0x05, 0x03, // 236:1655
+ 0x06, 0x7C, 0x04, 0x03, // 237:1660
+ 0x06, 0x80, 0x05, 0x03, // 238:1664
+ 0x06, 0x85, 0x05, 0x03, // 239:1669
+ 0x06, 0x8A, 0x0A, 0x06, // 240:1674
+ 0x06, 0x94, 0x0A, 0x06, // 241:1684
+ 0x06, 0x9E, 0x0A, 0x06, // 242:1694
+ 0x06, 0xA8, 0x0A, 0x06, // 243:1704
+ 0x06, 0xB2, 0x0A, 0x06, // 244:1714
+ 0x06, 0xBC, 0x0A, 0x06, // 245:1724
+ 0x06, 0xC6, 0x0A, 0x06, // 246:1734
+ 0x06, 0xD0, 0x09, 0x05, // 247:1744
+ 0x06, 0xD9, 0x0A, 0x06, // 248:1753
+ 0x06, 0xE3, 0x0A, 0x06, // 249:1763
+ 0x06, 0xED, 0x0A, 0x06, // 250:1773
+ 0x06, 0xF7, 0x0A, 0x06, // 251:1783
+ 0x07, 0x01, 0x0A, 0x06, // 252:1793
+ 0x07, 0x0B, 0x09, 0x05, // 253:1803
+ 0x07, 0x14, 0x0A, 0x06, // 254:1812
+ 0x07, 0x1E, 0x09, 0x05, // 255:1822
+
+ // Font Data:
+ 0x00,0x00,0xF8,0x02, // 33
+ 0x38,0x00,0x00,0x00,0x38, // 34
+ 0xA0,0x03,0xE0,0x00,0xB8,0x03,0xE0,0x00,0xB8, // 35
+ 0x30,0x01,0x28,0x02,0xF8,0x07,0x48,0x02,0x90,0x01, // 36
+ 0x00,0x00,0x30,0x00,0x48,0x00,0x30,0x03,0xC0,0x00,0xB0,0x01,0x48,0x02,0x80,0x01, // 37
+ 0x80,0x01,0x50,0x02,0x68,0x02,0xA8,0x02,0x18,0x01,0x80,0x03,0x80,0x02, // 38
+ 0x38, // 39
+ 0xE0,0x03,0x10,0x04,0x08,0x08, // 40
+ 0x08,0x08,0x10,0x04,0xE0,0x03, // 41
+ 0x28,0x00,0x18,0x00,0x28, // 42
+ 0x40,0x00,0x40,0x00,0xF0,0x01,0x40,0x00,0x40, // 43
+ 0x00,0x00,0x00,0x06, // 44
+ 0x80,0x00,0x80, // 45
+ 0x00,0x00,0x00,0x02, // 46
+ 0x00,0x03,0xE0,0x00,0x18, // 47
+ 0xF0,0x01,0x08,0x02,0x08,0x02,0x08,0x02,0xF0,0x01, // 48
+ 0x00,0x00,0x20,0x00,0x10,0x00,0xF8,0x03, // 49
+ 0x10,0x02,0x08,0x03,0x88,0x02,0x48,0x02,0x30,0x02, // 50
+ 0x10,0x01,0x08,0x02,0x48,0x02,0x48,0x02,0xB0,0x01, // 51
+ 0xC0,0x00,0xA0,0x00,0x90,0x00,0x88,0x00,0xF8,0x03,0x80, // 52
+ 0x60,0x01,0x38,0x02,0x28,0x02,0x28,0x02,0xC8,0x01, // 53
+ 0xF0,0x01,0x28,0x02,0x28,0x02,0x28,0x02,0xD0,0x01, // 54
+ 0x08,0x00,0x08,0x03,0xC8,0x00,0x38,0x00,0x08, // 55
+ 0xB0,0x01,0x48,0x02,0x48,0x02,0x48,0x02,0xB0,0x01, // 56
+ 0x70,0x01,0x88,0x02,0x88,0x02,0x88,0x02,0xF0,0x01, // 57
+ 0x00,0x00,0x20,0x02, // 58
+ 0x00,0x00,0x20,0x06, // 59
+ 0x00,0x00,0x40,0x00,0xA0,0x00,0xA0,0x00,0x10,0x01, // 60
+ 0xA0,0x00,0xA0,0x00,0xA0,0x00,0xA0,0x00,0xA0, // 61
+ 0x00,0x00,0x10,0x01,0xA0,0x00,0xA0,0x00,0x40, // 62
+ 0x10,0x00,0x08,0x00,0x08,0x00,0xC8,0x02,0x48,0x00,0x30, // 63
+ 0x00,0x00,0xC0,0x03,0x30,0x04,0xD0,0x09,0x28,0x0A,0x28,0x0A,0xC8,0x0B,0x68,0x0A,0x10,0x05,0xE0,0x04, // 64
+ 0x00,0x02,0xC0,0x01,0xB0,0x00,0x88,0x00,0xB0,0x00,0xC0,0x01,0x00,0x02, // 65
+ 0x00,0x00,0xF8,0x03,0x48,0x02,0x48,0x02,0x48,0x02,0xF0,0x01, // 66
+ 0x00,0x00,0xF0,0x01,0x08,0x02,0x08,0x02,0x08,0x02,0x10,0x01, // 67
+ 0x00,0x00,0xF8,0x03,0x08,0x02,0x08,0x02,0x10,0x01,0xE0, // 68
+ 0x00,0x00,0xF8,0x03,0x48,0x02,0x48,0x02,0x48,0x02,0x48,0x02, // 69
+ 0x00,0x00,0xF8,0x03,0x48,0x00,0x48,0x00,0x08, // 70
+ 0x00,0x00,0xE0,0x00,0x10,0x01,0x08,0x02,0x48,0x02,0x50,0x01,0xC0, // 71
+ 0x00,0x00,0xF8,0x03,0x40,0x00,0x40,0x00,0x40,0x00,0xF8,0x03, // 72
+ 0x00,0x00,0xF8,0x03, // 73
+ 0x00,0x03,0x00,0x02,0x00,0x02,0xF8,0x01, // 74
+ 0x00,0x00,0xF8,0x03,0x80,0x00,0x60,0x00,0x90,0x00,0x08,0x01,0x00,0x02, // 75
+ 0x00,0x00,0xF8,0x03,0x00,0x02,0x00,0x02,0x00,0x02,0x00,0x02, // 76
+ 0x00,0x00,0xF8,0x03,0x30,0x00,0xC0,0x01,0x00,0x02,0xC0,0x01,0x30,0x00,0xF8,0x03, // 77
+ 0x00,0x00,0xF8,0x03,0x30,0x00,0x40,0x00,0x80,0x01,0xF8,0x03, // 78
+ 0x00,0x00,0xF0,0x01,0x08,0x02,0x08,0x02,0x08,0x02,0x08,0x02,0xF0,0x01, // 79
+ 0x00,0x00,0xF8,0x03,0x48,0x00,0x48,0x00,0x48,0x00,0x30, // 80
+ 0x00,0x00,0xF0,0x01,0x08,0x02,0x08,0x02,0x08,0x03,0x08,0x03,0xF0,0x02, // 81
+ 0x00,0x00,0xF8,0x03,0x48,0x00,0x48,0x00,0xC8,0x00,0x30,0x03, // 82
+ 0x00,0x00,0x30,0x01,0x48,0x02,0x48,0x02,0x48,0x02,0x90,0x01, // 83
+ 0x00,0x00,0x08,0x00,0x08,0x00,0xF8,0x03,0x08,0x00,0x08, // 84
+ 0x00,0x00,0xF8,0x01,0x00,0x02,0x00,0x02,0x00,0x02,0xF8,0x01, // 85
+ 0x08,0x00,0x70,0x00,0x80,0x01,0x00,0x02,0x80,0x01,0x70,0x00,0x08, // 86
+ 0x18,0x00,0xE0,0x01,0x00,0x02,0xF0,0x01,0x08,0x00,0xF0,0x01,0x00,0x02,0xE0,0x01,0x18, // 87
+ 0x00,0x02,0x08,0x01,0x90,0x00,0x60,0x00,0x90,0x00,0x08,0x01,0x00,0x02, // 88
+ 0x08,0x00,0x10,0x00,0x20,0x00,0xC0,0x03,0x20,0x00,0x10,0x00,0x08, // 89
+ 0x08,0x03,0x88,0x02,0xC8,0x02,0x68,0x02,0x38,0x02,0x18,0x02, // 90
+ 0x00,0x00,0xF8,0x0F,0x08,0x08, // 91
+ 0x18,0x00,0xE0,0x00,0x00,0x03, // 92
+ 0x08,0x08,0xF8,0x0F, // 93
+ 0x40,0x00,0x30,0x00,0x08,0x00,0x30,0x00,0x40, // 94
+ 0x00,0x08,0x00,0x08,0x00,0x08,0x00,0x08,0x00,0x08,0x00,0x08, // 95
+ 0x08,0x00,0x10, // 96
+ 0x00,0x00,0x00,0x03,0xA0,0x02,0xA0,0x02,0xE0,0x03, // 97
+ 0x00,0x00,0xF8,0x03,0x20,0x02,0x20,0x02,0xC0,0x01, // 98
+ 0x00,0x00,0xC0,0x01,0x20,0x02,0x20,0x02,0x40,0x01, // 99
+ 0x00,0x00,0xC0,0x01,0x20,0x02,0x20,0x02,0xF8,0x03, // 100
+ 0x00,0x00,0xC0,0x01,0xA0,0x02,0xA0,0x02,0xC0,0x02, // 101
+ 0x20,0x00,0xF0,0x03,0x28, // 102
+ 0x00,0x00,0xC0,0x05,0x20,0x0A,0x20,0x0A,0xE0,0x07, // 103
+ 0x00,0x00,0xF8,0x03,0x20,0x00,0x20,0x00,0xC0,0x03, // 104
+ 0x00,0x00,0xE8,0x03, // 105
+ 0x00,0x08,0xE8,0x07, // 106
+ 0xF8,0x03,0x80,0x00,0xC0,0x01,0x20,0x02, // 107
+ 0x00,0x00,0xF8,0x03, // 108
+ 0x00,0x00,0xE0,0x03,0x20,0x00,0x20,0x00,0xE0,0x03,0x20,0x00,0x20,0x00,0xC0,0x03, // 109
+ 0x00,0x00,0xE0,0x03,0x20,0x00,0x20,0x00,0xC0,0x03, // 110
+ 0x00,0x00,0xC0,0x01,0x20,0x02,0x20,0x02,0xC0,0x01, // 111
+ 0x00,0x00,0xE0,0x0F,0x20,0x02,0x20,0x02,0xC0,0x01, // 112
+ 0x00,0x00,0xC0,0x01,0x20,0x02,0x20,0x02,0xE0,0x0F, // 113
+ 0x00,0x00,0xE0,0x03,0x20, // 114
+ 0x40,0x02,0xA0,0x02,0xA0,0x02,0x20,0x01, // 115
+ 0x20,0x00,0xF8,0x03,0x20,0x02, // 116
+ 0x00,0x00,0xE0,0x01,0x00,0x02,0x00,0x02,0xE0,0x03, // 117
+ 0x20,0x00,0xC0,0x01,0x00,0x02,0xC0,0x01,0x20, // 118
+ 0xE0,0x01,0x00,0x02,0xC0,0x01,0x20,0x00,0xC0,0x01,0x00,0x02,0xE0,0x01, // 119
+ 0x20,0x02,0x40,0x01,0x80,0x00,0x40,0x01,0x20,0x02, // 120
+ 0x20,0x00,0xC0,0x09,0x00,0x06,0xC0,0x01,0x20, // 121
+ 0x20,0x02,0x20,0x03,0xA0,0x02,0x60,0x02,0x20,0x02, // 122
+ 0x80,0x00,0x78,0x0F,0x08,0x08, // 123
+ 0x00,0x00,0xF8,0x0F, // 124
+ 0x08,0x08,0x78,0x0F,0x80, // 125
+ 0xC0,0x00,0x40,0x00,0xC0,0x00,0x80,0x00,0xC0, // 126
+ 0x00,0x00,0xA0,0x0F, // 161
+ 0x00,0x00,0xC0,0x01,0xA0,0x0F,0x78,0x02,0x40,0x01, // 162
+ 0x40,0x02,0x70,0x03,0xC8,0x02,0x48,0x02,0x08,0x02,0x10,0x02, // 163
+ 0x00,0x00,0xE0,0x01,0x20,0x01,0x20,0x01,0xE0,0x01, // 164
+ 0x48,0x01,0x70,0x01,0xC0,0x03,0x70,0x01,0x48,0x01, // 165
+ 0x00,0x00,0x38,0x0F, // 166
+ 0xD0,0x04,0x28,0x09,0x48,0x09,0x48,0x0A,0x90,0x05, // 167
+ 0x08,0x00,0x00,0x00,0x08, // 168
+ 0xE0,0x00,0x10,0x01,0x48,0x02,0xA8,0x02,0xA8,0x02,0x10,0x01,0xE0, // 169
+ 0x68,0x00,0x68,0x00,0x68,0x00,0x78, // 170
+ 0x00,0x00,0x80,0x01,0x40,0x02,0x80,0x01,0x40,0x02, // 171
+ 0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0xE0, // 172
+ 0x80,0x00,0x80, // 173
+ 0xE0,0x00,0x10,0x01,0xE8,0x02,0x68,0x02,0xC8,0x02,0x10,0x01,0xE0, // 174
+ 0x02,0x00,0x02,0x00,0x02,0x00,0x02,0x00,0x02,0x00,0x02, // 175
+ 0x00,0x00,0x38,0x00,0x28,0x00,0x38, // 176
+ 0x40,0x02,0x40,0x02,0xF0,0x03,0x40,0x02,0x40,0x02, // 177
+ 0x48,0x00,0x68,0x00,0x58, // 178
+ 0x48,0x00,0x58,0x00,0x68, // 179
+ 0x00,0x00,0x10,0x00,0x08, // 180
+ 0x00,0x00,0xE0,0x0F,0x00,0x02,0x00,0x02,0xE0,0x03, // 181
+ 0x70,0x00,0xF8,0x0F,0x08,0x00,0xF8,0x0F,0x08, // 182
+ 0x00,0x00,0x40, // 183
+ 0x00,0x00,0x00,0x14,0x00,0x18, // 184
+ 0x00,0x00,0x10,0x00,0x78, // 185
+ 0x30,0x00,0x48,0x00,0x48,0x00,0x30, // 186
+ 0x00,0x00,0x40,0x02,0x80,0x01,0x40,0x02,0x80,0x01, // 187
+ 0x00,0x00,0x10,0x02,0x78,0x01,0xC0,0x00,0x20,0x01,0x90,0x01,0xC8,0x03,0x00,0x01, // 188
+ 0x00,0x00,0x10,0x02,0x78,0x01,0x80,0x00,0x60,0x00,0x50,0x02,0x48,0x03,0xC0,0x02, // 189
+ 0x48,0x00,0x58,0x00,0x68,0x03,0x80,0x00,0x60,0x01,0x90,0x01,0xC8,0x03,0x00,0x01, // 190
+ 0x00,0x00,0x00,0x06,0x00,0x09,0xA0,0x09,0x00,0x04, // 191
+ 0x00,0x02,0xC0,0x01,0xB0,0x00,0x89,0x00,0xB2,0x00,0xC0,0x01,0x00,0x02, // 192
+ 0x00,0x02,0xC0,0x01,0xB0,0x00,0x8A,0x00,0xB1,0x00,0xC0,0x01,0x00,0x02, // 193
+ 0x00,0x02,0xC0,0x01,0xB2,0x00,0x89,0x00,0xB2,0x00,0xC0,0x01,0x00,0x02, // 194
+ 0x00,0x02,0xC2,0x01,0xB1,0x00,0x8A,0x00,0xB1,0x00,0xC0,0x01,0x00,0x02, // 195
+ 0x00,0x02,0xC0,0x01,0xB2,0x00,0x88,0x00,0xB2,0x00,0xC0,0x01,0x00,0x02, // 196
+ 0x00,0x02,0xC0,0x01,0xBE,0x00,0x8A,0x00,0xBE,0x00,0xC0,0x01,0x00,0x02, // 197
+ 0x00,0x03,0xC0,0x00,0xE0,0x00,0x98,0x00,0x88,0x00,0xF8,0x03,0x48,0x02,0x48,0x02,0x48,0x02, // 198
+ 0x00,0x00,0xF0,0x01,0x08,0x02,0x08,0x16,0x08,0x1A,0x10,0x01, // 199
+ 0x00,0x00,0xF8,0x03,0x49,0x02,0x4A,0x02,0x48,0x02,0x48,0x02, // 200
+ 0x00,0x00,0xF8,0x03,0x48,0x02,0x4A,0x02,0x49,0x02,0x48,0x02, // 201
+ 0x00,0x00,0xFA,0x03,0x49,0x02,0x4A,0x02,0x48,0x02,0x48,0x02, // 202
+ 0x00,0x00,0xF8,0x03,0x4A,0x02,0x48,0x02,0x4A,0x02,0x48,0x02, // 203
+ 0x00,0x00,0xF9,0x03,0x02, // 204
+ 0x02,0x00,0xF9,0x03, // 205
+ 0x01,0x00,0xFA,0x03, // 206
+ 0x02,0x00,0xF8,0x03,0x02, // 207
+ 0x40,0x00,0xF8,0x03,0x48,0x02,0x48,0x02,0x10,0x01,0xE0, // 208
+ 0x00,0x00,0xFA,0x03,0x31,0x00,0x42,0x00,0x81,0x01,0xF8,0x03, // 209
+ 0x00,0x00,0xF0,0x01,0x08,0x02,0x09,0x02,0x0A,0x02,0x08,0x02,0xF0,0x01, // 210
+ 0x00,0x00,0xF0,0x01,0x08,0x02,0x0A,0x02,0x09,0x02,0x08,0x02,0xF0,0x01, // 211
+ 0x00,0x00,0xF0,0x01,0x08,0x02,0x0A,0x02,0x09,0x02,0x0A,0x02,0xF0,0x01, // 212
+ 0x00,0x00,0xF0,0x01,0x0A,0x02,0x09,0x02,0x0A,0x02,0x09,0x02,0xF0,0x01, // 213
+ 0x00,0x00,0xF0,0x01,0x0A,0x02,0x08,0x02,0x0A,0x02,0x08,0x02,0xF0,0x01, // 214
+ 0x10,0x01,0xA0,0x00,0xE0,0x00,0xA0,0x00,0x10,0x01, // 215
+ 0x00,0x00,0xF0,0x02,0x08,0x03,0xC8,0x02,0x28,0x02,0x18,0x03,0xE8, // 216
+ 0x00,0x00,0xF8,0x01,0x01,0x02,0x02,0x02,0x00,0x02,0xF8,0x01, // 217
+ 0x00,0x00,0xF8,0x01,0x02,0x02,0x01,0x02,0x00,0x02,0xF8,0x01, // 218
+ 0x00,0x00,0xF8,0x01,0x02,0x02,0x01,0x02,0x02,0x02,0xF8,0x01, // 219
+ 0x00,0x00,0xF8,0x01,0x02,0x02,0x00,0x02,0x02,0x02,0xF8,0x01, // 220
+ 0x08,0x00,0x10,0x00,0x20,0x00,0xC2,0x03,0x21,0x00,0x10,0x00,0x08, // 221
+ 0x00,0x00,0xF8,0x03,0x10,0x01,0x10,0x01,0x10,0x01,0xE0, // 222
+ 0x00,0x00,0xF0,0x03,0x08,0x01,0x48,0x02,0xB0,0x02,0x80,0x01, // 223
+ 0x00,0x00,0x00,0x03,0xA4,0x02,0xA8,0x02,0xE0,0x03, // 224
+ 0x00,0x00,0x00,0x03,0xA8,0x02,0xA4,0x02,0xE0,0x03, // 225
+ 0x00,0x00,0x00,0x03,0xA8,0x02,0xA4,0x02,0xE8,0x03, // 226
+ 0x00,0x00,0x08,0x03,0xA4,0x02,0xA8,0x02,0xE4,0x03, // 227
+ 0x00,0x00,0x00,0x03,0xA8,0x02,0xA0,0x02,0xE8,0x03, // 228
+ 0x00,0x00,0x00,0x03,0xAE,0x02,0xAA,0x02,0xEE,0x03, // 229
+ 0x00,0x00,0x40,0x03,0xA0,0x02,0xA0,0x02,0xC0,0x01,0xA0,0x02,0xA0,0x02,0xC0,0x02, // 230
+ 0x00,0x00,0xC0,0x01,0x20,0x16,0x20,0x1A,0x40,0x01, // 231
+ 0x00,0x00,0xC0,0x01,0xA4,0x02,0xA8,0x02,0xC0,0x02, // 232
+ 0x00,0x00,0xC0,0x01,0xA8,0x02,0xA4,0x02,0xC0,0x02, // 233
+ 0x00,0x00,0xC0,0x01,0xA8,0x02,0xA4,0x02,0xC8,0x02, // 234
+ 0x00,0x00,0xC0,0x01,0xA8,0x02,0xA0,0x02,0xC8,0x02, // 235
+ 0x00,0x00,0xE4,0x03,0x08, // 236
+ 0x08,0x00,0xE4,0x03, // 237
+ 0x08,0x00,0xE4,0x03,0x08, // 238
+ 0x08,0x00,0xE0,0x03,0x08, // 239
+ 0x00,0x00,0xC0,0x01,0x28,0x02,0x38,0x02,0xE0,0x01, // 240
+ 0x00,0x00,0xE8,0x03,0x24,0x00,0x28,0x00,0xC4,0x03, // 241
+ 0x00,0x00,0xC0,0x01,0x24,0x02,0x28,0x02,0xC0,0x01, // 242
+ 0x00,0x00,0xC0,0x01,0x28,0x02,0x24,0x02,0xC0,0x01, // 243
+ 0x00,0x00,0xC0,0x01,0x28,0x02,0x24,0x02,0xC8,0x01, // 244
+ 0x00,0x00,0xC8,0x01,0x24,0x02,0x28,0x02,0xC4,0x01, // 245
+ 0x00,0x00,0xC0,0x01,0x28,0x02,0x20,0x02,0xC8,0x01, // 246
+ 0x40,0x00,0x40,0x00,0x50,0x01,0x40,0x00,0x40, // 247
+ 0x00,0x00,0xC0,0x02,0xA0,0x03,0x60,0x02,0xA0,0x01, // 248
+ 0x00,0x00,0xE0,0x01,0x04,0x02,0x08,0x02,0xE0,0x03, // 249
+ 0x00,0x00,0xE0,0x01,0x08,0x02,0x04,0x02,0xE0,0x03, // 250
+ 0x00,0x00,0xE8,0x01,0x04,0x02,0x08,0x02,0xE0,0x03, // 251
+ 0x00,0x00,0xE0,0x01,0x08,0x02,0x00,0x02,0xE8,0x03, // 252
+ 0x20,0x00,0xC0,0x09,0x08,0x06,0xC4,0x01,0x20, // 253
+ 0x00,0x00,0xF8,0x0F,0x20,0x02,0x20,0x02,0xC0,0x01, // 254
+ 0x20,0x00,0xC8,0x09,0x00,0x06,0xC8,0x01,0x20 // 255
+};
diff --git a/src/gps.ino b/src/gps.ino
new file mode 100644
index 0000000..ed1e339
--- /dev/null
+++ b/src/gps.ino
@@ -0,0 +1,91 @@
+/*
+
+GPS module
+
+Copyright (C) 2018 by Xose Pérez
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+
+*/
+
+#include
+
+uint32_t LatitudeBinary, LongitudeBinary;
+uint16_t altitudeGps;
+uint8_t hdopGps;
+char t[32]; // used to sprintf for Serial output
+
+TinyGPSPlus _gps;
+HardwareSerial _serial_gps(GPS_SERIAL_NUM);
+
+void gps_time(char * buffer, uint8_t size) {
+ snprintf(buffer, size, "%02d:%02d:%02d", _gps.time.hour(), _gps.time.minute(), _gps.time.second());
+}
+
+float gps_latitude() {
+ return _gps.location.lat();
+}
+
+float gps_longitude() {
+ return _gps.location.lng();
+}
+
+float gps_altitude() {
+ return _gps.altitude.meters();
+}
+
+float gps_hdop() {
+ return _gps.hdop.hdop();
+}
+
+uint8_t gps_sats() {
+ return _gps.satellites.value();
+}
+
+void gps_setup() {
+ _serial_gps.begin(GPS_BAUDRATE, SERIAL_8N1, GPS_RX_PIN, GPS_TX_PIN);
+}
+
+static void gps_loop() {
+ while (_serial_gps.available()) {
+ _gps.encode(_serial_gps.read());
+ }
+}
+
+void buildPacket(uint8_t txBuffer[9])
+{
+ LatitudeBinary = ((_gps.location.lat() + 90) / 180.0) * 16777215;
+ LongitudeBinary = ((_gps.location.lng() + 180) / 360.0) * 16777215;
+
+ sprintf(t, "Lat: %f", _gps.location.lat());
+ Serial.println(t);
+
+ sprintf(t, "Lng: %f", _gps.location.lng());
+ Serial.println(t);
+
+ txBuffer[0] = ( LatitudeBinary >> 16 ) & 0xFF;
+ txBuffer[1] = ( LatitudeBinary >> 8 ) & 0xFF;
+ txBuffer[2] = LatitudeBinary & 0xFF;
+
+ txBuffer[3] = ( LongitudeBinary >> 16 ) & 0xFF;
+ txBuffer[4] = ( LongitudeBinary >> 8 ) & 0xFF;
+ txBuffer[5] = LongitudeBinary & 0xFF;
+
+ altitudeGps = _gps.altitude.meters();
+ txBuffer[6] = ( altitudeGps >> 8 ) & 0xFF;
+ txBuffer[7] = altitudeGps & 0xFF;
+
+ hdopGps = _gps.hdop.value()/10;
+ txBuffer[8] = hdopGps & 0xFF;
+}
diff --git a/src/images.h b/src/images.h
new file mode 100644
index 0000000..16068bf
--- /dev/null
+++ b/src/images.h
@@ -0,0 +1,44 @@
+#define SATELLITE_IMAGE_WIDTH 16
+#define SATELLITE_IMAGE_HEIGHT 15
+const uint8_t SATELLITE_IMAGE[] PROGMEM = {
+ 0x00, 0x08, 0x00, 0x1C, 0x00, 0x0E, 0x20, 0x07, 0x70, 0x02, 0xF8, 0x00,
+ 0xF0, 0x01, 0xE0, 0x03, 0xC8, 0x01, 0x9C, 0x54, 0x0E, 0x52, 0x07, 0x48,
+ 0x02, 0x26, 0x00, 0x10, 0x00, 0x0E
+};
+
+#define TTN_IMAGE_WIDTH 62
+#define TTN_IMAGE_HEIGHT 48
+const uint8_t TTN_IMAGE[] PROGMEM = {
+ 0x00, 0x00, 0x00, 0xC0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0,
+ 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x7F, 0x00, 0x70, 0x00,
+ 0x00, 0x00, 0x00, 0xFC, 0xFF, 0x00, 0xF0, 0x00, 0x00, 0x00, 0x00, 0xFF,
+ 0xFF, 0x01, 0xC0, 0x03, 0x00, 0x80, 0x1F, 0xFF, 0xFF, 0x03, 0x00, 0x07,
+ 0x00, 0xE0, 0xBF, 0xFF, 0xFF, 0x03, 0x38, 0x0E, 0x00, 0xF0, 0xFF, 0xFF,
+ 0xFF, 0x07, 0xF8, 0x0C, 0x00, 0xF0, 0xFF, 0xFF, 0xFF, 0xF7, 0xE3, 0x1C,
+ 0x00, 0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0xC7, 0x1D, 0x00, 0xFC, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0x8F, 0x19, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x9F, 0x19,
+ 0x80, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x9F, 0x19, 0xC0, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xBF, 0x19, 0xC0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xBF, 0x19,
+ 0xC0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x18, 0xF8, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0x3F, 0x00, 0xFC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x1F, 0x00,
+ 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x1F, 0x00, 0xFE, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0x7F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x00,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00,
+ 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xFE, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0x7F, 0x00, 0xFC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x00,
+ 0xF8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x1F, 0x00, 0xE0, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0xBF, 0x99, 0xC7, 0x6F, 0x36, 0x63, 0x1C, 0x1C,
+ 0xBF, 0x99, 0xC7, 0x6F, 0x36, 0x67, 0x7E, 0x1E, 0x8C, 0x99, 0x00, 0x63,
+ 0x36, 0x67, 0x03, 0x02, 0x8C, 0x99, 0x00, 0x63, 0x36, 0x6F, 0x03, 0x06,
+ 0x8C, 0x9F, 0x07, 0xE3, 0x37, 0x6B, 0x73, 0x1C, 0x8C, 0x99, 0x00, 0x63,
+ 0x36, 0x7B, 0x63, 0x30, 0x8C, 0x99, 0x00, 0x63, 0x36, 0x73, 0x76, 0x33,
+ 0x8C, 0x99, 0x07, 0x63, 0x36, 0x73, 0x3E, 0x1F, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x08, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0x18, 0x3C, 0x28,
+ 0x81, 0x03, 0x07, 0x1A, 0x16, 0x08, 0x18, 0x68, 0x41, 0x06, 0x05, 0x0E,
+ 0x1E, 0x18, 0x18, 0x68, 0x41, 0x06, 0x07, 0x06, 0x1A, 0x08, 0x18, 0xD0,
+ 0x40, 0x06, 0x05, 0x0A, 0x12, 0x18, 0x18, 0xD0, 0x80, 0x01, 0x0D, 0x12,
+};
diff --git a/src/lmic_project_config.h b/src/lmic_project_config.h
new file mode 100644
index 0000000..43b68e7
--- /dev/null
+++ b/src/lmic_project_config.h
@@ -0,0 +1,12 @@
+// This sketch supports EU868 and US915
+
+// The Arduino-LMIC library by MCCI Catena is set to US915,
+// these settings have to be copied over the ones in the
+// lmic_project_config.h file in the library,
+// inside the project_config folder.
+
+// Make sure only one of the following is defined (CFG_us915 or CFG_eu868)
+#define CFG_us915 1
+//#define CFG_eu868 1
+
+#define CFG_sx1276_radio 1
diff --git a/src/main.ino b/src/main.ino
new file mode 100644
index 0000000..8966a96
--- /dev/null
+++ b/src/main.ino
@@ -0,0 +1,185 @@
+/*
+
+Main module
+
+# Modified by Kyle T. Gabriel to fix issue with incorrect GPS data for TTNMapper
+
+Copyright (C) 2018 by Xose Pérez
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+
+*/
+
+#include "configuration.h"
+#include
+
+uint8_t txBuffer[9];
+
+// Message counter, stored in RTC memory, survives deep sleep
+RTC_DATA_ATTR uint32_t count = 0;
+
+// -----------------------------------------------------------------------------
+// Application
+// -----------------------------------------------------------------------------
+
+void send() {
+ char buffer[40];
+ snprintf(buffer, sizeof(buffer), "Latitude: %10.6f\n", gps_latitude());
+ screen_print(buffer);
+ snprintf(buffer, sizeof(buffer), "Longitude: %10.6f\n", gps_longitude());
+ screen_print(buffer);
+ snprintf(buffer, sizeof(buffer), "Error: %4.2fm\n", gps_hdop());
+ screen_print(buffer);
+
+ buildPacket(txBuffer);
+
+ #if LORAWAN_CONFIRMED_EVERY > 0
+ bool confirmed = (count % LORAWAN_CONFIRMED_EVERY == 0);
+ #else
+ bool confirmed = false;
+ #endif
+
+ ttn_cnt(count);
+ ttn_send(txBuffer, LORAWAN_PORT, confirmed);
+
+ count++;
+}
+
+void sleep() {
+ #if SLEEP_BETWEEN_MESSAGES
+
+ // Show the going to sleep message on the screen
+ char buffer[20];
+ snprintf(buffer, sizeof(buffer), "Sleeping in %3.1fs\n", (MESSAGE_TO_SLEEP_DELAY / 1000.0));
+ screen_print(buffer);
+
+ // Wait for MESSAGE_TO_SLEEP_DELAY millis to sleep
+ delay(MESSAGE_TO_SLEEP_DELAY);
+
+ // Turn off screen
+ screen_off();
+
+ // Set the user button to wake the board
+ sleep_interrupt(BUTTON_PIN, LOW);
+
+ // We sleep for the interval between messages minus the current millis
+ // this way we distribute the messages evenly every SEND_INTERVAL millis
+ uint32_t sleep_for = (millis() < SEND_INTERVAL) ? SEND_INTERVAL - millis() : SEND_INTERVAL;
+ sleep_millis(sleep_for);
+
+ #endif
+}
+
+void callback(uint8_t message) {
+ if (EV_JOINING == message) screen_print("Joining TTN...\n");
+ if (EV_JOINED == message) screen_print("TTN joined!\n");
+ if (EV_JOIN_FAILED == message) screen_print("TTN join failed\n");
+ if (EV_REJOIN_FAILED == message) screen_print("TTN rejoin failed\n");
+ if (EV_RESET == message) screen_print("Reset TTN connection\n");
+ if (EV_LINK_DEAD == message) screen_print("TTN link dead\n");
+ if (EV_ACK == message) screen_print("ACK received\n");
+ if (EV_PENDING == message) screen_print("Message discarded\n");
+ if (EV_QUEUED == message) screen_print("Message queued\n");
+
+ if (EV_TXCOMPLETE == message) {
+ screen_print("Message sent\n");
+ sleep();
+ }
+
+ if (EV_RESPONSE == message) {
+
+ screen_print("[TTN] Response: ");
+
+ size_t len = ttn_response_len();
+ uint8_t data[len];
+ ttn_response(data, len);
+
+ char buffer[6];
+ for (uint8_t i=0; i SEND_INTERVAL) {
+ if (0 < gps_hdop() && gps_hdop() < 50 && gps_latitude() != 0 && gps_longitude() != 0) {
+ last = millis();
+ first = false;
+ send();
+ } else {
+ if (first) {
+ screen_print("Waiting GPS lock\n");
+ first = false;
+ }
+ if (millis() > GPS_WAIT_FOR_LOCK) {
+ sleep();
+ }
+ }
+ }
+}
diff --git a/src/screen.ino b/src/screen.ino
new file mode 100644
index 0000000..297c80a
--- /dev/null
+++ b/src/screen.ino
@@ -0,0 +1,110 @@
+/*
+
+SSD1306 - Screen module
+
+Copyright (C) 2018 by Xose Pérez
+
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+
+*/
+
+#include
+#include "SSD1306Wire.h"
+#include "OLEDDisplay.h"
+#include "images.h"
+#include "fonts.h"
+
+#define SCREEN_HEADER_HEIGHT 14
+
+SSD1306Wire * display;
+uint8_t _screen_line = SCREEN_HEADER_HEIGHT - 1;
+
+void _screen_header() {
+ char buffer[20];
+
+ // Message count
+ snprintf(buffer, sizeof(buffer), "#%03d", get_count() % 1000);
+ display->setTextAlignment(TEXT_ALIGN_LEFT);
+ display->drawString(0, 2, buffer);
+
+ // Datetime
+ gps_time(buffer, sizeof(buffer));
+ display->setTextAlignment(TEXT_ALIGN_CENTER);
+ display->drawString(display->getWidth()/2, 2, buffer);
+
+ // Satellite count
+ display->setTextAlignment(TEXT_ALIGN_RIGHT);
+ display->drawString(display->getWidth() - SATELLITE_IMAGE_WIDTH - 4, 2, itoa(gps_sats(), buffer, 10));
+ display->drawXbm(display->getWidth() - SATELLITE_IMAGE_WIDTH, 0, SATELLITE_IMAGE_WIDTH, SATELLITE_IMAGE_HEIGHT, SATELLITE_IMAGE);
+}
+
+void screen_show_logo() {
+ uint8_t x = (display->getWidth() - TTN_IMAGE_WIDTH) / 2;
+ uint8_t y = SCREEN_HEADER_HEIGHT + (display->getHeight() - SCREEN_HEADER_HEIGHT - TTN_IMAGE_HEIGHT) / 2 + 1;
+ display->drawXbm(x, y, TTN_IMAGE_WIDTH, TTN_IMAGE_HEIGHT, TTN_IMAGE);
+}
+
+void screen_off() {
+ display->displayOff();
+}
+
+void screen_on() {
+ display->displayOn();
+}
+
+void screen_clear() {
+ display->clear();
+}
+
+void screen_print(const char * text, uint8_t x, uint8_t y, uint8_t alignment) {
+ DEBUG_MSG(text);
+ display->setTextAlignment((OLEDDISPLAY_TEXT_ALIGNMENT) alignment);
+ display->drawString(x, y, text);
+}
+
+void screen_print(const char * text, uint8_t x, uint8_t y) {
+ screen_print(text, x, y, TEXT_ALIGN_LEFT);
+}
+
+void screen_print(const char * text) {
+ display->print(text);
+ if (_screen_line + 8 > display->getHeight()) {
+ // scroll
+ }
+ _screen_line += 8;
+ screen_loop();
+}
+
+void screen_update() {
+ display->display();
+}
+
+void screen_setup() {
+ // Display instance
+ display = new SSD1306Wire(OLED_ADDRESS, OLED_SDA, OLED_SCL);
+ display->init();
+ display->flipScreenVertically();
+ display->setFont(Custom_ArialMT_Plain_10);
+
+ // Scroll buffer
+ display->setLogBuffer(5, 30);
+}
+
+void screen_loop() {
+ display->clear();
+ _screen_header();
+ display->drawLogBuffer(0, SCREEN_HEADER_HEIGHT);
+ display->display();
+}
diff --git a/src/sleep.ino b/src/sleep.ino
new file mode 100644
index 0000000..ca0ef03
--- /dev/null
+++ b/src/sleep.ino
@@ -0,0 +1,44 @@
+/*
+
+Sleep module
+
+Copyright (C) 2018 by Xose Pérez
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+
+*/
+
+#include
+
+void sleep_interrupt(uint8_t gpio, uint8_t mode) {
+ esp_sleep_enable_ext0_wakeup((gpio_num_t) gpio, mode);
+}
+
+void sleep_interrupt_mask(uint64_t mask, uint8_t mode) {
+ esp_sleep_enable_ext1_wakeup(mask, (esp_sleep_ext1_wakeup_mode_t) mode);
+}
+
+void sleep_millis(uint64_t ms) {
+ esp_sleep_enable_timer_wakeup(ms * 1000);
+ esp_deep_sleep_start();
+}
+
+void sleep_seconds(uint32_t seconds) {
+ esp_sleep_enable_timer_wakeup(seconds * 1000000);
+ esp_deep_sleep_start();
+}
+
+void sleep_forever() {
+ esp_deep_sleep_start();
+}
diff --git a/src/ttn.ino b/src/ttn.ino
new file mode 100644
index 0000000..1ee3aaa
--- /dev/null
+++ b/src/ttn.ino
@@ -0,0 +1,220 @@
+/*
+
+TTN module
+Wrapper to use TTN with the LMIC library
+
+Copyright (C) 2018 by Xose Pérez
+
+This code requires the MCCI LoRaWAN LMIC library
+by IBM, Matthis Kooijman, Terry Moore, ChaeHee Won, Frank Rose
+https://github.com/mcci-catena/arduino-lmic
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+
+*/
+
+#include
+#include
+#include
+#include "configuration.h"
+#include "credentials.h"
+
+// -----------------------------------------------------------------------------
+// Globals
+// -----------------------------------------------------------------------------
+
+// LMIC GPIO configuration
+const lmic_pinmap lmic_pins = {
+ .nss = NSS_GPIO,
+ .rxtx = LMIC_UNUSED_PIN,
+ .rst = RESET_GPIO,
+ .dio = {DIO0_GPIO, DIO1_GPIO, DIO2_GPIO},
+};
+
+#ifdef USE_ABP
+// These callbacks are only used in over-the-air activation, so they are
+// left empty here (we cannot leave them out completely unless
+// DISABLE_JOIN is set in config.h, otherwise the linker will complain).
+void os_getArtEui (u1_t* buf) { }
+void os_getDevEui (u1_t* buf) { }
+void os_getDevKey (u1_t* buf) { }
+#endif
+
+#ifdef USE_OTAA
+void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8); }
+void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8); }
+void os_getDevKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16); }
+#endif
+
+std::vector _lmic_callbacks;
+
+// -----------------------------------------------------------------------------
+// Private methods
+// -----------------------------------------------------------------------------
+
+void _ttn_callback(uint8_t message) {
+ for (uint8_t i=0; i<_lmic_callbacks.size(); i++) {
+ (_lmic_callbacks[i])(message);
+ }
+}
+
+// LMIC library will call this method when an event is fired
+void onEvent(ev_t event) {
+ if (EV_TXCOMPLETE == event) {
+
+ if (LMIC.txrxFlags & TXRX_ACK) {
+ _ttn_callback(EV_ACK);
+ }
+
+ if (LMIC.dataLen) {
+ _ttn_callback(EV_RESPONSE);
+ }
+
+ }
+
+ // Send message callbacks
+ _ttn_callback(event);
+}
+
+// -----------------------------------------------------------------------------
+// Public methods
+// -----------------------------------------------------------------------------
+
+void ttn_register(void (*callback)(uint8_t message)) {
+ _lmic_callbacks.push_back(callback);
+}
+
+size_t ttn_response_len() {
+ return LMIC.dataLen;
+}
+
+void ttn_response(uint8_t * buffer, size_t len) {
+ for (uint8_t i = 0; i < LMIC.dataLen; i++) {
+ buffer[i] = LMIC.frame[LMIC.dataBeg + i];
+ }
+}
+
+bool ttn_setup() {
+ // SPI interface
+ SPI.begin(SCK_GPIO, MISO_GPIO, MOSI_GPIO, NSS_GPIO);
+
+ // LMIC init
+ return ( 1 == os_init_ex( (const void *) &lmic_pins ) );
+}
+
+void ttn_join() {
+ // Reset the MAC state. Session and pending data transfers will be discarded.
+ LMIC_reset();
+
+ #ifdef USE_ABP
+
+ // Set static session parameters. Instead of dynamically establishing a session
+ // by joining the network, precomputed session parameters are be provided.
+ uint8_t appskey[sizeof(APPSKEY)];
+ uint8_t nwkskey[sizeof(NWKSKEY)];
+ memcpy_P(appskey, APPSKEY, sizeof(APPSKEY));
+ memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY));
+ LMIC_setSession(0x1, DEVADDR, nwkskey, appskey);
+
+ #if defined(CFG_eu868)
+
+ // Set up the channels used by the Things Network, which corresponds
+ // to the defaults of most gateways. Without this, only three base
+ // channels from the LoRaWAN specification are used, which certainly
+ // works, so it is good for debugging, but can overload those
+ // frequencies, so be sure to configure the full frequency range of
+ // your network here (unless your network autoconfigures them).
+ // Setting up channels should happen after LMIC_setSession, as that
+ // configures the minimal channel set.
+ LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI); // g-band
+ LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK, DR_FSK), BAND_MILLI); // g2-band
+
+ #elif defined(CFG_us915)
+
+ // NA-US channels 0-71 are configured automatically
+ // but only one group of 8 should (a subband) should be active
+ // TTN recommends the second sub band, 1 in a zero based count.
+ // https://github.com/TheThingsNetwork/gateway-conf/blob/master/US-global_conf.json
+ LMIC_selectSubBand(1);
+
+ #endif
+
+ // If using a mono-channel gateway disable all channels
+ // but the one the gateway is listening to
+ //LMIC_disableChannel(0);
+ //LMIC_disableChannel(1);
+ //LMIC_disableChannel(2);
+ //LMIC_disableChannel(3);
+ //LMIC_disableChannel(4);
+ //LMIC_disableChannel(5);
+ //LMIC_disableChannel(6);
+ //LMIC_disableChannel(7);
+ //LMIC_disableChannel(8);
+
+ // TTN defines an additional channel at 869.525Mhz using SF9 for class B
+ // devices' ping slots. LMIC does not have an easy way to define set this
+ // frequency and support for class B is spotty and untested, so this
+ // frequency is not configured here.
+
+ // Disable link check validation
+ LMIC_setLinkCheckMode(0);
+
+ // TTN uses SF9 for its RX2 window.
+ LMIC.dn2Dr = DR_SF9;
+
+ // Set default rate and transmit power for uplink (note: txpow seems to be ignored by the library)
+ LMIC_setDrTxpow(DR_SF7, 14);
+
+ // Trigger a false joined
+ _ttn_callback(EV_JOINED);
+
+ #endif // USE_ABP
+}
+
+void ttn_sf(unsigned char sf) {
+ LMIC_setDrTxpow(sf, 14);
+}
+
+void ttn_adr(bool enabled) {
+ LMIC_setAdrMode(enabled);
+}
+
+void ttn_cnt(unsigned char num) {
+ LMIC_setSeqnoUp(num);
+}
+
+void ttn_send(uint8_t * data, uint8_t port, bool confirmed){
+ // Check if there is not a current TX/RX job running
+ if (LMIC.opmode & OP_TXRXPEND) {
+ _ttn_callback(EV_PENDING);
+ return;
+ }
+
+ // Prepare upstream data transmission at the next possible time.
+ // Parameters are port, data, length, confirmed
+ LMIC_setTxData2(port, data, sizeof(data), confirmed ? 1 : 0);
+
+ _ttn_callback(EV_QUEUED);
+}
+
+void ttn_loop() {
+ os_runloop_once();
+}