What is esp32-iec62056-component

esp32-iec62056-component is a pure C esp-idf component for ESP32 that allows reading electricity meters with optical eye.

Example

The project example contains one source file in C language main.c. The file is located in folder main.

List of events

• IEC1107_PROTOCOL_ERROR
• IEC1107_START_MESSAGE_NOT_SENDED
• IEC1107_START_MESSAGE_SENDED
• IEC1107_START_MESSAGE_NOT_RECIEVED
• IEC1107_START_MESSAGE_RECEIVED
• IEC1107_READOUT_MESSAGE_SENDED
• IEC1107_READOUT_MESSAGE_NOT_RECEIVED
• IEC1107_READOUT_MESSAGE_RECEIVED
• IEC1107_FIELDS_UPDATED

When you adding esp32-iec62056-component to your code

#include "iec1107.h"

Add this two line

extern export_values_t* export_hdl;
extern const int export_params_size;

Event handler function

static void iec1107_event_handler(void* event_handler_arg, esp_event_base_t event_base, int32_t event_id, void* event_data)
{
  switch(event_id)
  {
  case IEC1107_PROTOCOL_ERROR:
    ESP_LOGI("Event Handler", "IEC1107_PROTOCOL_ERROR");
    break;
  case IEC1107_START_MESSAGE_NOT_RECIEVED:
    ESP_LOGI("Event Handler", "IEC1107_START_MESSAGE_NOT_RECIEVED");
    break;
  case IEC1107_START_MESSAGE_NOT_SENDED:
    ESP_LOGI("Event Handler", "IEC1107_START_MESSAGE_NOT_SENDED");
    break;
  case IEC1107_START_MESSAGE_SENDED:
     ESP_LOGI("Event Handler", "IEC1107_START_MESSAGE_SENDED");
    break;
  case IEC1107_START_MESSAGE_RECEIVED:
    ESP_LOGI("Event Handler", "SIEC1107_START_MESSAGE_RECEIVED");
    break;
  case IEC1107_READOUT_MESSAGE_SENDED:
    ESP_LOGI("Event Handler", "IEC1107_READOUT_MESSAGE_SENDED");
    break;
  case IEC1107_READOUT_MESSAGE_NOT_RECEIVED:
    ESP_LOGI("Event Handler", "IEC1107_READOUT_MESSAGE_NOT_RECEIVED");
    break;
  case IEC1107_READOUT_MESSAGE_RECEIVED:
    ESP_LOGI("Event Handler", "IEC1107_READOUT_MESSAGE_RECEIVED");
    break;
  case IEC1107_FIELDS_UPDATED:
    print_exported_fields();
    ESP_LOGI("Event Handler", "IEC1107_FIELDS_UPDATED");
    break;

  default:
    break;
  }
}

Our main

void app_main()
{
  iec1107_parser_handle_t iec1107 = iec1107_parser_init(LOOP, 1000);

  iec1107_parser_add_handler(iec1107, iec1107_event_handler, NULL);

  iec1107_start(iec1107);
}

Adding obis code

You can edit export_obis_code config.h Example :

const char* export_obis_code[] =
{
    "32.7.0",
    "1.8.0",
    "34.7.0",
    "96.77.2*1",
};

I will calculate the values using the order found above. You can access these values through this struct. export_hdl We have already defined it in main.c.

For examle above export_obis_code

When the reading from the meter is finished. All values are placed in the export_hdl variable. If you want to access the value of 32.7.0. export_hdl -> export_holder[0] It holds this value.