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HM-10 BLE node SoftSerial issues

EmielA last edited by

Hello,
I build a Mysensor 1.4 version node with a Arduino Nano and the NRF24. And made this connect with a HM-10 BLE module (bluetooth low energy module), and connected it on pin 4 Rx and 5 Tx and controlled it by asynch rs232 serial AT commands. on a SoftSerial bases. The goal of my project is to detect BLE beacons. measure their distances to the sensor and sent the distance and the MAC adress of the beacon to the gateway.
When I tried to compile I got interrupt vector errors. After searching the web I found that I had to adjust the PinChangeInt.h and uncomment the #define NO_PORTB_PINCHANGES and also for port c and d. Then the compile went well.
But I noticed then strange behaviour. When I sent AT commands and wait for a response on the SoftSerial port it misses sometimes characters. Its not reliable anymore. The scanning and detection stops after several minutes.
How can I use SoftSerial and the 1.4 Mysensors together reliable?
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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
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@mfalkvidd Thank you very much, that's exactly what I was looking for!
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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

HM-10 BLE node SoftSerial issues

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