espressif/esp-now

# v2.4.0

Features:
- Update readme for using the coin cell button to work with a ESP-NOW Matter bridge.
- Update coin cell switch default config to work with responder in power save.

Fixed:
- Fix ota spi write error when device encryption is enabled. [#80](https://github.com/espressif/esp-now/pull/80)
- Fix incorrect condition check for accepting bind request. [#81](https://github.com/espressif/esp-now/pull/81)
- Fix return type warning when compile use ESP-IDF master branch.
- Fix transmit on the default allowed channels unless a specific country is set.

# v2.3.0

Features:
- Increase wait ack config range and reduce wait ack duration for button.
- Use random IV at the end of the payload for gain a lot of security. [#40](https://github.com/espressif/esp-now/issues/40)
- Add option for enable/disable security on all components. [#71](https://github.com/espressif/esp-now/issues/71)
- Add sec event for application to get the result. [#73](https://github.com/espressif/esp-now/issues/73)

Fixed:
- Fix an issue for light sleep after backup the channel
- Fix an issue of missnamed. [#72](https://github.com/espressif/esp-now/issues/72)
- Update readme of miss actual path. [#76](https://github.com/espressif/esp-now/issues/76)

# v2.2.0

Features:
- Add an option to enable/disable responder forwarding.

Fixed:
- Fix the bug with bindlist cleanup when unbinding.
- Fix compile issue when enbale Anti-rollback option.
- Fix the bug that prevents sending clear data when security is enabled. [#63](https://github.com/espressif/esp-now/issues/63)
- Fix the bug where ESPNOW_INIT_CONFIG_DEFAULT does not match its declaration in C++. [#65](https://github.com/espressif/esp-now/issues/65)

# v2.1.1

Fix:
- Fix a bug of compile fail when use component registry

# v2.1.0

Features:
- Add light sleep configuration for the low power application.
- Add auto control the channel of ESP-NOW package sending, so application data transmission will have less time.

Fix:
- Fix a bug of init function which cause security sample can't work. [#60](https://github.com/espressif/esp-now/issues/60)

Examples:
- coin_cell_demo: Provides a low power solution to achieve wireless control between `SWITCH` and `BULB`.

# v2.0.0

This is the first release version for ESP-NOW component in Espressif Component Registry, more detailed descriptions about the project, please refer to [User_Guide](https://github.com/espressif/esp-now/tree/master/User_Guide.md).

Features:
- Control: Support the simple data communication between `initiator device` and `responder devices`.
- Provision: Support to do WiFi provision for multiple devices over ESP-NOW at the same time.
- Security: Support to encrypt the application level data by ECDH and AES128-CCM.
- Debug: Support to receive the running log from responder devices for debugging.
- Upgrade: Support to upgrade multiple devices over ESP-NOW at the same time.