Get PEM from mbedtls

[maurizio.scian]

Hi,
I'm using esp-idf v5.0. I already get file via HTTPS like in "https_mbedtls" example, without embed a PEM file. It works well, but for other connections (for example, for the OTA procedure) the library needs the PEM file. I wouldn't like use embedded PEM, is there a method to get the PEM file from the chain verification procedure, so that use the getted file in the OTA procedure?