Read data from energy meter using arduino and optical port

By SARATH_FAWSTECH , 22 January, 2025
Forums
Gurux DLMS for ANSI C

i want to read energy consumption data from my linkwell AC static kWh meter using arduino. I have the optical reader with me. Can anyone give me a example project to get start. It was very urgent.

SARATH_FAWSTECH

1 year 2 months ago

i have tried it but i got error while compiling

/Users/macbook/Library/Arduino15/packages/esp32/tools/esp-x32/2405/bin/xtensa-esp32-elf-gcc -MMD -c @/Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/flags/c_flags -w -Os -Werror=return-type -DF_CPU=240000000L -DARDUINO=10607 -DARDUINO_ESP32_DEV -DARDUINO_ARCH_ESP32 "-DARDUINO_BOARD=\"ESP32_DEV\"" "-DARDUINO_VARIANT=\"esp32\"" -DARDUINO_PARTITION_default "-DARDUINO_HOST_OS=\"macosx\"" "-DARDUINO_FQBN=\"esp32:esp32:esp32:UploadSpeed=921600,CPUFreq=240,FlashFreq=80,FlashMode=qio,FlashSize=4M,PartitionScheme=default,DebugLevel=none,PSRAM=disabled,LoopCore=1,EventsCore=1,EraseFlash=none,JTAGAdapter=default,ZigbeeMode=default\"" -DESP32=ESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_RUNNING_CORE=1 -DARDUINO_EVENT_RUNNING_CORE=1 -DARDUINO_USB_CDC_ON_BOOT=0 @/Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/flags/defines -I/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client -iprefix /Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/include/ @/Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/flags/includes -I/Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/qio_qspi/include -I/Users/macbook/Library/Arduino15/packages/esp32/hardware/esp32/3.1.1/cores/esp32 -I/Users/macbook/Library/Arduino15/packages/esp32/hardware/esp32/3.1.1/variants/esp32 -I/Users/macbook/Library/Arduino15/packages/esp32/hardware/esp32/3.1.1/libraries/EEPROM/src @/private/var/folders/pf/btnyds813370pxzbt2v4g5l00000gn/T/arduino/sketches/781185D94772807151BCC67AE0F267DC/build_opt.h @/private/var/folders/pf/btnyds813370pxzbt2v4g5l00000gn/T/arduino/sketches/781185D94772807151BCC67AE0F267DC/file_opts /private/var/folders/pf/btnyds813370pxzbt2v4g5l00000gn/T/arduino/sketches/781185D94772807151BCC67AE0F267DC/sketch/src/curve.c -o /private/var/folders/pf/btnyds813370pxzbt2v4g5l00000gn/T/arduino/sketches/781185D94772807151BCC67AE0F267DC/sketch/src/curve.c.o
/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client/src/cosem.c: In function 'cosem_init4':
/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client/src/cosem.c:642:29: error: 'gxSecuritySetup' undeclared (first use in this function)
642 | BYTE_BUFFER_INIT(&((gxSecuritySetup*)object)->guek);
| ^~~~~~~~~~~~~~~
/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client/src/cosem.c:642:29: note: each undeclared identifier is reported only once for each function it appears in
/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client/src/cosem.c:642:45: error: expected expression before ')' token
642 | BYTE_BUFFER_INIT(&((gxSecuritySetup*)object)->guek);
| ^
/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client/src/cosem.c:643:35: error: expected expression before ')' token
643 | bb_set(&((gxSecuritySetup*)object)->guek, DEFAULT_BLOCK_CIPHER_KEY, sizeof(DEFAULT_BLOCK_CIPHER_KEY));
| ^
/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client/src/cosem.c:644:45: error: expected expression before ')' token
644 | BYTE_BUFFER_INIT(&((gxSecuritySetup*)object)->gbek);
| ^
/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client/src/cosem.c:645:35: error: expected expression before ')' token
645 | bb_set(&((gxSecuritySetup*)object)->gbek, DEFAULT_BROADCAST_BLOCK_CIPHER_KEY, sizeof(DEFAULT_BROADCAST_BLOCK_CIPHER_KEY));
| ^
/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client/src/cosem.c:646:45: error: expected expression before ')' token
646 | BYTE_BUFFER_INIT(&((gxSecuritySetup*)object)->gak);
| ^
/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client/src/cosem.c:647:35: error: expected expression before ')' token
647 | bb_set(&((gxSecuritySetup*)object)->gak, DEFAULT_AUTHENTICATION_KEY, sizeof(DEFAULT_AUTHENTICATION_KEY));
| ^
/Users/macbook/Library/Arduino15/packages/esp32/tools/esp-x32/2405/bin/xtensa-esp32-elf-gcc -MMD -c @/Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/flags/c_flags -w -Os -Werror=return-type -DF_CPU=240000000L -DARDUINO=10607 -DARDUINO_ESP32_DEV -DARDUINO_ARCH_ESP32 "-DARDUINO_BOARD=\"ESP32_DEV\"" "-DARDUINO_VARIANT=\"esp32\"" -DARDUINO_PARTITION_default "-DARDUINO_HOST_OS=\"macosx\"" "-DARDUINO_FQBN=\"esp32:esp32:esp32:UploadSpeed=921600,CPUFreq=240,FlashFreq=80,FlashMode=qio,FlashSize=4M,PartitionScheme=default,DebugLevel=none,PSRAM=disabled,LoopCore=1,EventsCore=1,EraseFlash=none,JTAGAdapter=default,ZigbeeMode=default\"" -DESP32=ESP32 -DCORE_DEBUG_LEVEL=0 -DARDUINO_RUNNING_CORE=1 -DARDUINO_EVENT_RUNNING_CORE=1 -DARDUINO_USB_CDC_ON_BOOT=0 @/Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/flags/defines -I/Users/macbook/Downloads/GuruxDLMS.c-master/Arduino_IDE/client -iprefix /Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/include/ @/Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/flags/includes -I/Users/macbook/Library/Arduino15/packages/esp32/tools/esp32-arduino-libs/idf-release_v5.3-cfea4f7c-v1/esp32/qio_qspi/include -I/Users/macbook/Library/Arduino15/packages/esp32/hardware/esp32/3.1.1/cores/esp32 -I/Users/macbook/Library/Arduino15/packages/esp32/hardware/esp32/3.1.1/variants/esp32 -I/Users/macbook/Library/Arduino15/packages/esp32/hardware/esp32/3.1.1/libraries/EEPROM/src @/private/var/folders/pf/btnyds813370pxzbt2v4g5l00000gn/T/arduino/sketches/781185D94772807151BCC67AE0F267DC/build_opt.h @/private/var/folders/pf/btnyds813370pxzbt2v4g5l00000gn/T/arduino/sketches/781185D94772807151BCC67AE0F267DC/file_opts /private/var/folders/pf/btnyds813370pxzbt2v4g5l00000gn/T/arduino/sketches/781185D94772807151BCC67AE0F267DC/sketch/src/datainfo.c -o /private/var/folders/pf/btnyds813370pxzbt2v4g5l00000gn/T/arduino/sketches/781185D94772807151BCC67AE0F267DC/sketch/src/datainfo.c.o

Using library EEPROM at version 3.1.1 in folder: /Users/macbook/Library/Arduino15/packages/esp32/hardware/esp32/3.1.1/libraries/EEPROM
exit status 1

Compilation error: 'gxSecuritySetup' undeclared (first use in this function)

Kurumi

1 year 2 months ago

Hi,

Did you copy the include and src folders from development folder to GuruxDLMS.c-master/Arduino_IDE/client

client
...client
...src

BR,
Mikko

SARATH_FAWSTECH

1 year 2 months ago

yes i have copied the files, when i commend all the files in the ignore file it get compiled, why ?.

i just want to read the voltage, current, energy consumption details from the meter. i have connected my optical probe to serial2 (RX2 and TX2) of esp32 then what are the commends to be uncommented. please help. my current Arduinoignore.h file is

Kurumi

1 year 2 months ago

Hi,

Ignoring the security setup caused this. This is now fixed. Get the latest version.

BR,
Mikko

SARATH_FAWSTECH

1 year 2 months ago

hi Kurumi,

thanks for the replay, can you please tell me which are the lines in the ignore.h file to be uncommented with respect to the new updated version. also please tell me on how to modify the code to use the optical probe connected to the Serial2 of esp32. I have to use the LLS key for communicating with the meter, so where should i place the LLS key in my code ?

Kurumi

1 year 2 months ago

Hi,

You don't need to uncomment anything from gxignore.h. Just get the latest version and update that under the development folder.

To connect with LLS you need to change this line:

Client.init(true, 16, 1, DLMS_AUTHENTICATION_NONE, NULL, DLMS_INTERFACE_TYPE_HDLC);

to this:

Client.init(true, YOUR_LLS_CLIENT_ADDRESS, 1, DLMS_AUTHENTICATION_LOW, YOUR_LLS_PASSWORD, DLMS_INTERFACE_TYPE_HDLC);

You shouldn't need to do anything if your Arduino version supports UART.

BR,
Mikko

SARATH_FAWSTECH

1 year 2 months ago

how can i find the LLS_CLIENT_ADDRESS of my meter and how to add my authentication key ? should i enter it in asci format or in hex ?, i can give you the AARQ of my meter obtained from gurux director can you tell me the LLS_CLIENT_ADDRESS. also please comment on using the RX2 and TX2 for my code where my optical probe is connected to ESP32.

7E A0 41 03 41 10 E4 8F E6 E6 00 60 33 A1 09 06 07 60 85 74 05 08 01 01 8A 02 07 80 8B 07 60 85 74 05 08 02 01 AC 07 80 05 46 41 57 53 54 BE 10 04 0E 01 00 00 00 06 5F 1F 04 00 00 1E 5D FF FF 04 99 7E

Kurumi

1 year 2 months ago

Hi,

Client address is 0x20. The password is: FAWST

This connection doesn't use an authentication key.

I can't say anything from the UART, because I don't know what board or chipset you are using.

BR,
Mikko

SARATH_FAWSTECH

1 year 2 months ago

iam using ESP32-WROOM-32

Client.init(true, 0x20, 1, DLMS_AUTHENTICATION_LOW, FAWST, DLMS_INTERFACE_TYPE_HDLC);

can you please check the code snippet and verify this right or wrong

Kurumi

1 year 2 months ago

Hi,

Try something like this:

Client.init(true, 0x20, 1, DLMS_AUTHENTICATION_LOW, "FAWST", DLMS_INTERFACE_TYPE_HDLC);

BR,
Mikko

SARATH_FAWSTECH

1 year 2 months ago

hi,
thank you for the response, can you please comment on how can i modify the code to use Serial2 port of my ESP32-WROOM-32.

Kurumi

1 year 2 months ago

Hi,

If your board manager doesn't support Arduino serial port, you need to replace your own implementation where the serial port is used.

BR,
Mikko

SARATH_FAWSTECH

1 year 2 months ago

my board manager is supporting serial port but i have connected the optical probe to another pins, can i map the pins to the desired pins. if not can you please explain the connection of the circuit. like where to connect the tx/rx pin of optical probe and

Kurumi

1 year 2 months ago

Hi,

You need to check the correct PINs from the chipset documentation.
Pins vary between the chipset models.

BR,
Mikko

SARATH_FAWSTECH

1 year 2 months ago

i am using Docklight for debugging my circuit. my meter is not responding when i send
"/?!\r\n" what may be the reason ?.

my meter is also not responding with the client code.

Kurumi

1 year 2 months ago

Hello,

Your meter does not support IEC Mode E. Try to change HdLC_WITH_MODE_E to HDLC.

Check your baud rate. The best option is to download GXDLMSDirector and connect with that to check the correct parameters.

BR,
Mikko

SARATH_FAWSTECH

1 year 2 months ago

i have already used the gurux director the settings are
baude rate 9600
parity none
8 bit
where should i change HDLC_WITH_MODE_E to HDLC in the client code ?

SARATH_FAWSTECH

1 year 2 months ago

when i run the below code i got output

" 10-04-2025 12:17:56 Received bytes:
010-04-2025 12:17:56 com_initializeConnection failed 25210-04-2025 12:17:56 Start reading10-04-2025 12:17:58 Received bytes:
010-04-2025 12:17:58 Data send failed. Try to resend. 1 "

can you guide me what did i do wrong and how to solve it.

[code snippet removed]

Kurumi

1 year 2 months ago

Hi,

Please, don't add code snippets from GitHub. It doesn't help.

Try to connect with your PC first to check if the MCU sends any data.

Then check your baud rate.

Try to connect with GXDMSDirector first to check the correct settings.

BR,
Mikko

SARATH_FAWSTECH

1 year 2 months ago

i have connected the meter with gurux director and i was able to read the data from it. but when i connect the meter using esp32 using the client code i got this output at the debug serial port. can i enable any log option in the clent code to see what is happening in the code.

when i decoded the data send by my optical probe connected to esp32 with another usb optical probe connected to docklight the data for SNRM is sending correctly. but the response from the meter is not processed by the client code. can i enable any debug option to see more details at the serial

Kurumi

1 year 2 months ago

Hi,

The common problem with optical probes is that the power levels are too low.
Check that there is enough power to use the optical probe.

You can send debug info to the other serial port, but I believe that debugger is better to solve this.

BR,
Mikko

SARATH_FAWSTECH

1 year 1 month ago

i got response from my meter when i modified my optical probe the response i got is

:Start reading :com_initializeConnection SUCCEEDED 0 :Logical Device NameIndex: 2 Value: 56 54 4B 2D 33 36 53 4D 20 31
:ClockIndex: 2 Value: 04/11/2025 19:33:14
Index: 3 Value: 330
Index: 4 Value: 0
Index: 5 Value: 01/01/1970 00:00:00 UTC+00:00
Index: 6 Value: 01/01/1970 00:00:00 UTC+00:00
Index: 7 Value: 0
Index: 8 Value: 0
Index: 9 Value: 0

next i want to read the voltage, current, and energy from the meter, what are the modification i want to do in my code. please help.

dose i want to edit the line
ret = com_readAllObjects("0.0.43.1.0.255");

iam using indian standard meter.