Replace heavy std::string/iostream usage in the DLMS parser with stack-allocated char buffers and snprintf to avoid heap allocations and reduce runtime overhead. Introduce buffer-based helpers (data_to_string_, obis_to_string_) and switch hex formatting to format_hex_pretty_to; remove <sstream>/<iomanip> and include <cstdio>. Update header signatures accordingly. Also change DlmsPushComponent to use App.get_loop_component_start_time() instead of millis() when tracking last_rx_char_time_ for RX timeout handling.
Files changed: components/dlms_push/dlms_parser.cpp/.h (buffer-based string helpers, logging, include changes), components/dlms_push/dlms_push.cpp (use App loop time for timeout).
Note: The string helper APIs were converted to buffer-oriented versions — update any callers to provide an output buffer.
Add explicit pull-up configuration for the UART RX pin and disable the logger (baud_rate: 0) to avoid pin conflicts with an RS485 converter. Updates applied to esphome-smartmeter.yaml and both README (EN/CZ) files with notes explaining that esp-idf > 5.x defaults pins to floating so RX needs pull-up, and that the logger was turned off because the same pins are shared with the RS485 converter.
dlms_push is a complete rewrite of the component using common esphome structure. The new component no longer uses Gurux library so it is significantly smaller and easier to maintain.
Update README (EN/CZ) to document dlms_push, replace xt211 examples, and expose new config options (show_log, receive_timeout, custom_pattern).
Also update esphome-smartmeter.yaml accordingly.
Introduced various shields.io badges to both Czech and English README files to display project maintenance status, license, stars, issues, pull requests, downloads, and code size. This improves project visibility and provides quick repository insights for users.
The README files no longer mention the need to downgrade to esp-idf version 5.4.1, reflecting that this workaround is no longer necessary. Updated both Czech and English documentation accordingly.
Refactored XT211Uart to handle cases where the lock is not initialized, preventing null dereference. Added fallback to base read_array for non-hardware UARTs in read_array_quick_, improving compatibility with BLE-backed UARTs.
Tomer27cz
Tomer27cz