Further debug shows that the ESP_ERR_INVALID_STATE error comes from below lines ... //Check that pipe and port are in the correct state to receive URBs HCD_CHECK_FROM_CRIT(pipe->port->state == HCD_PORT_STATE_ENABLED //The pipe's port must be in the correct state && pipe->state == HCD_PIPE_STATE_ACTI...

Hi there, I have a ESP32-S3-USB-OTG dev board working as USB host for an Android phone. I followed the simple client task example in the ESP-IDF version 5.1 USB host API reference guide, and my USB host application is able to open the device, find the host interface and its endpoints, call usb_host_...

Hi there, I am looking to run the usb-host-lib example on an ESP32-S3, to connect to an Android device which should run in Accessory mode. I am trying to implement a class driver for the Android Open Accessory (AOA) in the usb-host-lib, that will send required control requests to the Android device,...

Hi there, I am trying to use the USB Host peripheral on the ESP32-S3 to communicate with an Android device. I am using the usb_host_lib example and managed to get the Android device descriptor info displayed on the terminal. I've got basic communication working. In order to request the Android devic...

Hi there, I come across the posts here today, and am also very interested on flashing ESP32 over the serial connection in Android app. From what I read on https://github.com/espressif/esptool/wiki/ESP32-Boot-Mode-Selection, seems like this can be achieved as follows, 1. Android app instructs ESP32 a...

Hi there, I am working on an Android app that is able to connect to an ESP32 device with USB OTA. Now I would like to add some support in the Android app to update the ESP32 device with new firmware version. I am just wondering if there is anyone who has done similar thing in the past, and would be ...