I get much errors durring compiling in plattform io

[martinmmi]

Hello :)

Iam martin from germany and i try to connect my ttgo v21 boards with the the things network. Unfortunately I get a lot of errors in platform io so I don't know how to start. :(

Here are my steps so far:

1. New Project in plattform io
2. Clone the "arduino_lorawan_esp32_example.ino" into the new projekt
3. Install the following libs from the example via the internal plattform io lib installer:

MCCI Arduino Development Kit ADK 0.2.2
MCCI LoRaWAN LMIC library 4.1.1
MCCI Arduino LoRaWAN Library 0.9.2
LoRa_Serialization 3.2.1

4. Added the files secrets.h and LoraMessage.h according to the description in the source code / git.
5. #include <Arduino.h> in each file
6. Try to compile.

Here a screenshot from the errors:

Here a screenshot from the secrets.h and loramessage.h:

Can you give me a small support via discord?

[martinmmi]

Here is the repo, what i opened for this project:
https://github.com/martinmmi/ttn_mqtt

[matthias-bs]

Well, I'm afraid I cannot provide this kind of support!
And normally I reject any questions concerning PlatformIO, because I'm only using the Arduino IDE - but today is your lucky day!

Please remove your src/LoraMessage.h. This hides a file with the same name provided by the library LoraSerialization. The correct board definition is provided by some magic from platformio.ini.

Then change platformio.ini as follows:

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html

[env:ttgo-lora32-v21]
platform = espressif32
board = ttgo-lora32-v21
framework = arduino
lib_deps = 
	mcci-catena/MCCI LoRaWAN LMIC library@^4.1.1
	mcci-catena/MCCI Arduino Development Kit ADK@^0.2.2
	mcci-catena/MCCI Arduino LoRaWAN Library@^0.9.2
	thesolarnomad/LoRa Serialization@^3.2.1
	SPI

build_flags =
    ; Use platformio.ini for settings instead lmic_project_config.h.
    -D ARDUINO_LMIC_PROJECT_CONFIG_H_SUPPRESS

    ; Ping and beacons not supported for class A, disable to save memory.
    -D DISABLE_PING
    -D DISABLE_BEACONS
    -D hal_init=LMICHAL_init           ; Workaround for naming conflict of function hal_init
                                       ; introduced by newer versions (> 3.5.0) of 
                                       ; PlatformIO Espressif 32 platform (ESP32 Arduino core).
                                       ; See https://github.com/lnlp/LMIC-node/issues/41 for more information.

    ; -D LMIC_DEBUG_LEVEL=1            ; 0, 1 or 2
    
    ; -D CFG_sx1272_radio=1            ; Use for SX1272 radio
    -D CFG_sx1276_radio=1              ; Use for SX1276 radio
    -D USE_ORIGINAL_AES                ; Faster but larger, see docs
    ; -D LMIC_USE_INTERRUPTS           ; Not tested or supported on many platforms
    -D LMIC_ENABLE_DeviceTimeReq=1   ; Network time support

    ; --- Regional settings -----
    ; Enable only one of the following regions:    
    ; -D CFG_as923=1
    ; -D CFG_as923jp=1   
    ; -D CFG_au915=1
    ; -D CFG_cn490=1                   ; Not yet supported
    ; -D CFG_cn783=1                   ; Not yet supported
    ; -D CFG_eu433=1                   ; Not yet supported
    -D CFG_eu868=1
    ; -D CFG_in866=1
    ; -D CFG_kr920=1
    ; -D CFG_us915=1

The first thing was that the SPI library was missing - it's built in with the Arduino IDE, but here it has to be provided explicitly.

Then we have some LMIC specific stuff - parts of it more or less easy to understand (defines for the radio module and the LoRaWAN region), other parts of it... not so obvious (proudly copied from here: https://github.com/lnlp/LMIC-node/blob/main/platformio.ini).

Finally we have two warnings which have to be fixed:

1. Warning: main.cpp: no return statement in function returning non-void [-Wreturn-type]
   Fix: please change

   bool uplinkRequest(void) {
        m_fUplinkRequest = true;
   };
   

   to

   void uplinkRequest(void) {
        m_fUplinkRequest = true;
   };
   

2. Warning: ttn_mqtt/.pio/libdeps/ttgo-lora32-v21/MCCI Arduino LoRaWAN Library/src/Arduino_LoRaWAN.h:
   control reaches end of non-void function [-Wreturn-type] [Ln370, Col25]
   Please see mcci-catena/arduino-lorawan/pull/204

Good luck!

[matthias-bs]

BTW: You can safely ignore this warning: #warning "You must replace the values marked FILLMEIN with real values from the TTN control panel!" [-Wcpp]

[martinmmi]

Omg. Thank you so much! Seems like it's working!!!

[martinmmi]

One more question:

How can I connect to the follow gateway id (its only 500m left from my home): Gateway ID: oi-lej-gw01
How can i say that my device connect with this gateway? Or will it do this automatically?

And I have much authenification id's on ttn. Which one i have to use for appeui in the abp mode?

deveui[] = { 0x3D, 0xD4, 0x05, 0xD0, 0x7E, 0xD5, 0xB3, 0x70 }; LITTLE-ENDIAN
appkey[] = { 0x20, 0xD9, 0xAB, 0x7A, 0xD7, 0x60, 0x4A, 0xC5, 0x6E, 0x6E, 0x3B, 0x35, 0x38, 0x92, 0x3F, 0xAB }; BIG-ENDIAN

appeui[] = NwkSKey ???

[matthias-bs]

Hi Martin,

I don't know if you can restrict the connection to a specific gateway. AFAIK, if a node is received by multiple gateways the network handles it in the proper way (e.g. avoiding transmission of duplicate payload messages)

Regarding the IDs, have a look at https://www.thethingsindustries.com/docs/reference/glossary/ or in the TTN console, select your device, go to the tab "General settings" and hover over the help in the sections "Network layer" and "Application layer". The "S" in some of the IDs stands for "secret" - you should not expose those to the rest of the world...

Normally (unless to have hardware/software restrictions which prevent this, which is not the case with ESP32 and LMIC-based SW)), you should use OTAA instead of APB. You can find an explanation why on the excellent TTN website as well.

Cheers
Matthias

[matthias-bs]

BTW: You can at least use LoRaWAN specification 1.0.3. The regional parameters are selected automatically in this case. Not sure if a later version would also work...

[martinmmi]

Okay, thank you so much. It works! I coulded connect with the gateway oi-lej-gw01.

13:42:52 Forward join-accept message
13:42:51 Accept join-request

Is the example based on abp mode, or?

https://github.com/mcci-catena/arduino-lorawan/blob/master/examples/arduino_lorawan_esp32_example/arduino_lorawan_esp32_example.ino

When i like to try the otaa mode, i have to use this example, maybe?
https://github.com/mcci-catena/arduino-lmic/tree/master/examples/ttn-otaa

Thanks so much!

[matthias-bs]

The ESP32 example uses. OTAA.

[kadirozdinc]

I try to make the sketch work but I got an error. I use ESP32 DOIT V1 dev board and HopeRF RFM96 868mhz Radio module. I made those changes mentioned above I could compile successfully but esp32 restarts itself continously.

My repo : https://github.com/kadirozdinc/esp32-LorawanLMIC

Error in Serial Console :

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13192
load:0x40080400,len:3028
entry 0x400805e4
Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x400d561d  PS      : 0x00060230  A0      : 0x800d56c0  A1      : 0x3ffb2060  
A2      : 0x3ffb20ec  A3      : 0x00847628  A4      : 0x00000084  A5      : 0x3ffc35cc
A6      : 0x00008476  A7      : 0x3ffb20cc  A8      : 0x3ffc35cc  A9      : 0x33be27a0
A10     : 0x3ffb20cc  A11     : 0x00000000  A12     : 0x00000000  A13     : 0x3ffc35cc
A14     : 0x3ffb211c  A15     : 0x63ffffff  SAR     : 0x0000001b  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x00847658  LBEG    : 0x400864f8  LEND    : 0x40086503  LCOUNT  : 0x00000000


Backtrace: 0x400d561a:0x3ffb2060 0x400d56bd:0x3ffb2090 0x400d50f7:0x3ffb2190 0x400d5190:0x3ffb21b0 0x400d51d0:0x3ffb21d0 0x400d19d5:0x3ffb21f0 0x400d2788:0x3ffb2210 0x400d38fd:0x3ffb2230 0x400d550f:0x3ffb2250 0x400d1954:0x3ffb2270 0x400d7021:0x3ffb2290




ELF file SHA256: ca8aa52e3b79a85a

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13192
load:0x40080400,len:3028
entry 0x400805e4