Protocols
ESP-TLS
Removed Deprecated API
The deprecated esp_tls_conn_http_new() function has been removed. Use either:
esp_tls_conn_http_new_sync()for blocking connectionsesp_tls_conn_http_new_async()for non-blocking connections
The new API requires you to create the esp_tls_t structure using esp_tls_init() and provides better control over the connection process.
ESP-Modbus
The Espressif ESP-Modbus Library (esp-modbus) supports Modbus communication in the networks based on RS485, Wi-Fi, and Ethernet interfaces.
The component esp-modbus v2 (v2.x.x) is the current supported component version:
Documentation
Application Examples
Since ESP-IDF version v6.0, the examples for component esp-modbus v1 which is obsolete have been removed from ESP-IDF.
The examples below demonstrate the ESP-Modbus library of serial and TCP ports for both slave and master implementations respectively.
mb_serial_slave - demonstrates how to use ESP32-C61 as a Modbus serial slave device with the esp-modbus stack, enabling an external Modbus host to read and write device parameters using the Modbus protocol.
mb_serial_master - demonstrates how to use the esp-modbus stack port on ESP32-C61 as a Modbus serial master device, capable of reading and writing values from slave devices in a Modbus segment.
mb_tcp_slave - demonstrates the esp-modbus TCP slave stack port, allowing an external Modbus host to read and write device parameters via the Modbus protocol.
mb_tcp_master - demonstrates how to use the esp-modbus stack port on ESP32-C61 as a Modbus TCP master device, capable of reading and writing values from slave devices in a Modbus network.
Please refer to the README.md documents of each specific example for details.