@cabat , The Gnd is not needed, only the A and B pins are needed, I think.
I tested a 2nd node with the same sketch, only the "MY_NODE_ID" was changed.
It works perfectly without needing the "MY_PARENT_NODE_ID" directive.
Both nodes are communicating well with the gateway now.
@cabat , you are right
I commented on the MY_PARENT_NODE_ID line and after uploading sketch, I still receive on the gateway.
The problem was elsewhere but I don't understand where
I found my problem
I added the parent node ID:
#define MY_PARENT_NODE_ID 0
in the node sketch and now it works
Hi,
I already use mysensors with NRF24L01 and it works well.
I would like to use mysensors with RS485 nodes but I have communication problems
I'm using an Arduino Duemilanove (yes, it's old but it still works well), an Arduino Uno compatible board and 2 RS485 modules for testing.
I used this wiring diagram: https://2.bp.blogspot.com/--MTeYYSu6nE/WViOqBi4T8I/AAAAAAAAUP8/cTphNMowJXUlAOn-oD44f1Wdd2NFrgpXgCLcBGAs/s1600/schemat%2BRS485%2BMySensors.jpg.
I have exactly the same RS485 modules.
Here is the gateway code:
// Enable debug prints to serial monitor
#define MY_DEBUG
// Enable RS485 transport layer
#define MY_RS485
// Define this to enables DE-pin management on defined pin
#define MY_RS485_DE_PIN 2
// Set RS485 baud rate to use
#define MY_RS485_BAUD_RATE 9600
// Enable this if RS485 is connected to a hardware serial port
//#define MY_RS485_HWSERIAL Serial1
// Enable serial gateway
#define MY_GATEWAY_SERIAL
// Enable inclusion mode
#define MY_INCLUSION_MODE_FEATURE
// Enable Inclusion mode button on gateway
#define MY_INCLUSION_BUTTON_FEATURE
// Set inclusion mode duration (in seconds)
#define MY_INCLUSION_MODE_DURATION 60
// Digital pin used for inclusion mode button
#define MY_INCLUSION_MODE_BUTTON_PIN 3
// Set blinking period
#define MY_DEFAULT_LED_BLINK_PERIOD 300
// Flash leds on rx/tx/err
#define MY_DEFAULT_ERR_LED_PIN 4 // Error led pin
#define MY_DEFAULT_RX_LED_PIN 5 // Receive led pin
#define MY_DEFAULT_TX_LED_PIN 6 // the PCB, on board LED
#include <MySensors.h>
void setup()
{
// Setup locally attached sensors
}
void presentation()
{
// Present locally attached sensors
}
void loop()
{
// Send locally attached sensor data here
}
And the gataway log:
Terminal ready
0;255;3;0;9;0 MCO:BGN:INIT GW,CP=RSNGA---,FQ=16,REL=255,VER=2.3.2
0;255;3;0;9;5 TSM:INIT
0;255;3;0;9;7 TSF:WUR:MS=0
0;255;3;0;9;10 TSM:INIT:TSP OK
0;255;3;0;9;13 TSM:INIT:GW MODE
0;255;3;0;9;15 TSM:READY:ID=0,PAR=0,DIS=0
0;255;3;0;9;19 MCO:REG:NOT NEEDED
0;255;3;0;14;Gateway startup complete.
0;255;0;0;18;2.3.2
0;255;3;0;9;23 MCO:BGN:STP
0;255;3;0;9;29 MCO:BGN:INIT OK,TSP=1
0;255;3;0;9;33 TSM:READY:NWD REQ
0;255;3;0;9;53 ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=0,l=0,sg=0,ft=0,st=OK:
And the node:
// Enable debug prints to serial monitor
#define MY_DEBUG
// Enable RS485 transport layer
#define MY_RS485
// Define this to enables DE-pin management on defined pin
#define MY_RS485_DE_PIN 2
// Set RS485 baud rate to use
#define MY_RS485_BAUD_RATE 9600
// Enable this if RS485 is connected to a hardware serial port
//#define MY_RS485_HWSERIAL Serial1
#define MY_NODE_ID 20
#include <MySensors.h>
static const uint64_t UPDATE_INTERVAL = 10000;
#define CHILD_ID_VALUE 0
MyMessage msgVal(CHILD_ID_VALUE, V_VAR1);
// ----------------------------------------------------------------------------
void presentation()
{
// Send the sketch version information to the gateway
sendSketchInfo("RS485 Node test Sensor", "1.0");
// Register all sensors to gw (they will be created as child devices)
present(CHILD_ID_VALUE, S_CUSTOM, "Node RS485");
}
// ----------------------------------------------------------------------------
void setup()
{
Serial.println( F("Arduino MySensors RS485 Node test") ); // Fonction F() permet de placer la chaine dans la mémoire eprogramme (Arduino IDE 1.0).
analogReference(INTERNAL);
delay(1000);
}
void loop()
{
Serial.println( F("Loop ...") );
// Get millis
long ms = millis();
Serial.print(F("Millis: "));
Serial.println(ms);
send(msgVal.set(ms, 1));
// Sleep for a while to save energy
sleep(UPDATE_INTERVAL);
}
And the node log:
__ __ ____
| \/ |_ _/ ___| ___ _ __ ___ ___ _ __ ___
| |\/| | | | \___ \ / _ \ `_ \/ __|/ _ \| `__/ __|
| | | | |_| |___| | __/ | | \__ \ _ | | \__ \
|_| |_|\__, |____/ \___|_| |_|___/\___/|_| |___/
|___/ 2.3.2
16 MCO:BGN:INIT NODE,CP=RSNNA---,FQ=16,REL=255,VER=2.3.2
26 TSM:INIT
28 TSF:WUR:MS=0
29 TSM:INIT:TSP OK
31 TSM:FPAR
49 ?TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2057 !TSM:FPAR:NO REPLY
2059 TSM:FPAR
2076 ?TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
4084 !TSM:FPAR:NO REPLY
4086 TSM:FPAR
4104 ?TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
6112 !TSM:FPAR:NO REPLY
6114 TSM:FPAR
6131 ?TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
8139 !TSM:FPAR:FAIL
8140 TSM:FAIL:CNT=1
8142 TSM:FAIL:DIS
8144 TSF:TDI:TSL
18146 TSM:FAIL:RE-INIT
18148 TSM:INIT
18149 TSM:INIT:TSP OK
18151 TSM:FPAR
18169 ?TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
20178 !TSM:FPAR:NO REPLY
20180 TSM:FPAR
20199 ?TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
22206 !TSM:FPAR:NO REPLY
22208 TSM:FPAR
To debug, I also use this USB RS485 module: https://www.makershop.de/wp-content/uploads/2016/01/1PC-font-b-USB-b-font-to-font-b-RS485-b-font-font-b-USB-b.jpg, this one is connected to the RS485 bus and I can see with a simple python program the data sent by the node:
01 ff 00 58 07 02 ff ff ff 02 03 07 ff 03 66 04
01 ff 00 58 07 02 ff ff ff 02 03 07 ff 03 66 04
01 ff 00 58 07 02 ff ff ff 02 03 07 ff 03 66 04
01 ff 00 58 07 02 ff ff ff 02 03 07 ff 03 66 04
...
Still nothing is received on the gateway !
I have checked the wiring several times, and tested with other identical RS485 modules but still the same problem.
Would you have other tracks?
Thanks
ps: I use Arduino IDE 1.8.13 and MySensors lib 2.3.2