ESP32 Serial Upgrade over SDIO

[vivek.vaghela]

Hi,
I have connected esp32 on my XYZ MCU over SDIO interface and I want to serial upgrade ESP32's Firmware.
Is it possible?

[ESP_igrr]

Assuming your ESP32 application can receive some kind of commands from the master over SDIO, you can add several commands for OTA:
- start sending OTA binary
- send one chunk of OTA binary
- end sending OTA binary and perform the update

In the ESP32 application, you can then map these commands to calls to the respective esp_ota_* APIs.