arduino-esp32/libraries/Update/examples/HTTPS_OTA_Update/Readme.md

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# OTA Firmware Upgrade for Arduino
This sketch allows Arduino user to perform Over The Air (OTA) firmware upgrade. It uses HTTPS.
# API introduced for OTA
## HttpsOTA.begin(const char * url, const char * server_certificate, bool skip_cert_common_name_check)
Main API which starts firmware upgrade
### Parameters
* url : URL for the uploaded firmware image
* server_certificate : Provide the ota server certificate for authentication via HTTPS
* skip_cert_common_name_check : Skip any validation of server certificate CN field
The default value provided to skip_cert_common_name_check is true
## HttpsOTA.onHttpEvent(function)
This API exposes HTTP Events to the user
### Parameter
Function passed has following signature
void HttpEvent (HttpEvent_t * event);
# HttpsOTA.otaStatus()
It tracks the progress of OTA firmware upgrade.
* HTTPS_OTA_IDLE : OTA upgrade have not started yet.
* HTTPS_OTA_UPDATNG : OTA upgarde is in progress.
* HTTPS_OTA_SUCCESS : OTA upgrade is successful.
* HTTPS_OTA_FAIL : OTA upgrade failed.
* HTTPS_OTA_ERR : Error occured while creating xEventGroup().