Usb Host - Espressif ESP32-S2 Programming Manual

Chapter 2. API Reference
esp_err_t esp_tusb_deinit_console(int cdc_intf)
Switch log to the default output.
Return esp_err_t
Parameters
• cdc_intf: - interface number of TinyUSB's CDC
Header File
• components/tinyusb/additions/include/tusb_tasks.h
Functions
esp_err_t tusb_run_task(void)
This helper function creates and starts a task which wraps tud_task().
The wrapper function basically wraps tud_task and some log. Default parameters: stack size and priority as
configured, argument = NULL, not pinned to any core. If you have more requirements for this task, you can
create your own task which calls tud_task as the last step.
Return Value
• ESP_OK: run tinyusb main task successfully
• ESP_FAIL: run tinyusb main task failed of internal error
• ESP_ERR_INVALID_STATE: tinyusb main task has been created before
esp_err_t tusb_stop_task(void)
This helper function stops and destroys the task created by tusb_run_task()
Return Value
• ESP_OK: stop and destory tinyusb main task successfully
• ESP_ERR_INVALID_STATE: tinyusb main task hasn't been created yet
Header File
• components/tinyusb/additions/include/vfs_tinyusb.h
Functions
esp_err_t esp_vfs_tusb_cdc_register(int cdc_intf, char const *path)
Register TinyUSB CDC at VFS with path.
Return esp_err_t ESP_OK or ESP_FAIL
Parameters
• cdc_intf: - interface number of TinyUSB's CDC
• path: - path where the CDC will be registered, /dev/tusb_cdc will be used if left NULL.
esp_err_t esp_vfs_tusb_cdc_unregister(char const *path)
Unregister TinyUSB CDC from VFS.
Return esp_err_t ESP_OK or ESP_FAIL
Parameters
• path: - path where the CDC will be unregistered if NULL will be used /dev/tusb_cdc

2.2.25 USB Host

Warning: The USB Host Library API is a beta version thus is subject to change.
The following document lists the API and types of the USB Host Library (that is currently under development).
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