63 lines
2.8 KiB
C
63 lines
2.8 KiB
C
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/*
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* SPDX-FileCopyrightText: 2020-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <stdbool.h>
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#include "esp_err.h"
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#include "tusb.h"
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#include "tinyusb_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Configuration structure of the TinyUSB core
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*
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* USB specification mandates self-powered devices to monitor USB VBUS to detect connection/disconnection events.
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* If you want to use this feature, connected VBUS to any free GPIO through a voltage divider or voltage comparator.
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* The voltage divider output should be (0.75 * Vdd) if VBUS is 4.4V (lowest valid voltage at device port).
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* The comparator thresholds should be set with hysteresis: 4.35V (falling edge) and 4.75V (raising edge).
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*/
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typedef struct {
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union {
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const tusb_desc_device_t *device_descriptor; /*!< Pointer to a device descriptor. If set to NULL, the TinyUSB device will use a default device descriptor whose values are set in Kconfig */
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const tusb_desc_device_t *descriptor __attribute__((deprecated)); /*!< Alias to `device_descriptor` for backward compatibility */
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};
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const char **string_descriptor; /*!< Pointer to array of string descriptors. If set to NULL, TinyUSB device will use a default string descriptors whose values are set in Kconfig */
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int string_descriptor_count; /*!< Number of descriptors in above array */
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bool external_phy; /*!< Should USB use an external PHY */
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const uint8_t *configuration_descriptor; /*!< Pointer to a configuration descriptor. If set to NULL, TinyUSB device will use a default configuration descriptor whose values are set in Kconfig */
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bool self_powered; /*!< This is a self-powered USB device. USB VBUS must be monitored. */
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int vbus_monitor_io; /*!< GPIO for VBUS monitoring. Ignored if not self_powered. */
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} tinyusb_config_t;
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/**
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* @brief This is an all-in-one helper function, including:
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* 1. USB device driver initialization
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* 2. Descriptors preparation
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* 3. TinyUSB stack initialization
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* 4. Creates and start a task to handle usb events
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*
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* @note Don't change Custom descriptor, but if it has to be done,
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* Suggest to define as follows in order to match the Interface Association Descriptor (IAD):
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* bDeviceClass = TUSB_CLASS_MISC,
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* bDeviceSubClass = MISC_SUBCLASS_COMMON,
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*
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* @param config tinyusb stack specific configuration
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* @retval ESP_ERR_INVALID_ARG Install driver and tinyusb stack failed because of invalid argument
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* @retval ESP_FAIL Install driver and tinyusb stack failed because of internal error
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* @retval ESP_OK Install driver and tinyusb stack successfully
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*/
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esp_err_t tinyusb_driver_install(const tinyusb_config_t *config);
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esp_err_t tinyusb_driver_uninstall(void);
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#ifdef __cplusplus
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}
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#endif
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