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[PlatformIO] How to build a library to share across projects?

sbrinkmann last edited by
A few weeks ago I switched from the Arduino IDE to PlatformIO. Since then developing of MySensors nodes becomes as convenient as it is developing Java or NodeJS applications. Then I tried to build a base library to share common functionality across my different projects. To archive this I've build a PlatformIO library project and added MySensors as dependency, since I want to add or wrap existing MySensors functionality. When I try to build one of my depending projects, LDF resolves the dependency tree as following:
```
Library Dependency Graph
|-- <BaseLibrary>
|   |-- <MySensors> v2.1.0
|   |   |-- <SPI> v1.0
|   |   |-- <Wire> v1.0
|   |   |-- <EEPROM> v1.0
|-- <SPI> v1.0
|-- <MySensors> v2.1.0
|   |-- <SPI> v1.0
|   |-- <Wire> v1.0
|   |-- <EEPROM> v1.0
|-- <EEPROM> v1.0
|-- <ESP8266WiFi> v1.0
```
But when I add #include <MySensors.h> to my BaseLibrary.cpp and build the depending project, the linker shows for each MySensors method the error ... multiple definition .... From my understandung the following precompiler statement
```
#ifndef MySensors_h
#define MySensors_h
```
should avoid that this happens. Does anyone know how to build a multi project library with a MySensors dependency? Is this possible with the current MySensors design?
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Development • esp8266 raspberry pi serial gateway nano rpi tcp gateway mqtt gateway • • OldSurferDude

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@OldSurferDude well, the ESP8266 is limited to 4 TCP clients in arduino IDE. This can't be really increased. I did som experiments and you can set it up to 15, but after the 5th client on my web server, I got a freeze. Maybe you got something wrong. #define MY_GATEWAY_MAX_CLIENTS 2 defines how many controllers (eg Home Assistant) can connect to the gateway, not how many sensors/MySensors devices. And yes, you can have multiple TCP gateways in HomeAssistant. I got an NRF24, an RFM95 long range and a RFM95 short range gateway (all based on ESP32) on the same Home Assistant. Regards, Edi
FOTA using OptiBoot copy_flash_pages
Development • • eiten

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IT WORKS I got a first working version, using an ATmega1284P running on MightyCore 2.2.2 (as soon as I began developement, they switched from Optiboot to Urboot in version 3.0.0, whicht does not include the copy_flash_pages function anymore, but I'm working on a work around there). Only thing I could not solve is to do a CRC check of the image after download... You can try it out here: https://github.com/eiten/MySensors/tree/FOTAInternalFlashTest It's not beautiful yet with much Serial.prints in it, but maybe it helps you if you find errors.
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Development • • pikim

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Just for completeness: the right way to do this is to add the json under ~/.platformio/boards and the other files as described in https://community.platformio.org/t/how-use-a-same-chip-but-with-different-environment/18082/4
[mysensors] Not a valid message: invalid literal for int() with base 10: '\x00\x000'
Development • • kiesel

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Thanks, I'll keep this in mind if I decide to debug it. I realized that I am also tired of patching the gateway through to the doctor container inside an LXC so now I am looking at creating an esp gateway. Just need to check if I can find a pcb on here. Thanks again!
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Development • esp8266 mqtt gw • • bgunnarb

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@bgunnarb I like @eiten 's solution for you. Personally, I am not a fan of using cloud/public brokers. Thus I am curious about your system and there is something about it from which I can learn. I would like to understand why you cannot deploy your own mosquitto broker. I see your set up as 3 sensor groups defined by the channel used #define MY_RF24_CHANNEL ChannelOfSensorGroup Each sensor group has some number of sensors and one MQTT GW on ESP8266. On the MQTT side, do you distinguish between gateways by using a different host name? Something like: #define MY_MQTT_PUBLISH_TOPIC_PREFIX "mygateway-nOf3-out" #define MY_MQTT_SUBSCRIBE_TOPIC_PREFIX "mygateway-nOf3-in" #define MY_MQTT_CLIENT_ID "mysensors-nOf3" #define MY_HOSTNAME "ESP8266_MQTT_GW_nOf3" //#define MY_CONTROLLER_IP_ADDRESS 192, 168, 178, 68 #define MY_CONTROLLER_URL_ADDRESS "test.mosquitto.org" #define MY_PORT 1883 I must assume your controller (aka Home Assistant) discriminates between through which gateway the data is to flow by way of the different topic names. If my "something like" is correct, then changing brokers is changing the IPaddress/URL in your gateways and in your controller (though if the controller is Home Assistant, it may be a bother because the device-id's may change which will make a mess of all the work you've done in HA. This is why I like @eiten 's solution.) I hope it's all working for you again. OSD

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[mysensors] Not a valid message: invalid literal for int() with base 10: '\x00\x000'
Development • • kiesel

MQTT GW on ESP8266 supporting SSL/TLS?
Development • esp8266 mqtt gw • • bgunnarb

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[PlatformIO] How to build a library to share across projects?

Suggested Topics

Arduino Celebrates 10 years (Malmö/Sweden) Announcements • • hek

Gateways Development • esp8266 raspberry pi serial gateway nano rpi tcp gateway mqtt gateway • • OldSurferDude

FOTA using OptiBoot copy_flash_pages Development • • eiten

Sensebender Gateway (SAMD21) Development • • pikim

[mysensors] Not a valid message: invalid literal for int() with base 10: '\x00\x000' Development • • kiesel

MQTT GW on ESP8266 supporting SSL/TLS? Development • esp8266 mqtt gw • • bgunnarb

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