menu "USB-OTG" depends on SOC_USB_OTG_SUPPORTED config USB_HOST_CONTROL_TRANSFER_MAX_SIZE int "Largest size (in bytes) of transfers to/from default endpoints" default 256 help Each USB device attached is allocated a dedicated buffer for its OUT/IN transfers to/from the device's control endpoint. The maximum size of that buffer is determined by this option. The limited size of the transfer buffer have the following implications: - The maximum length of control transfers is limited - Device's with configuration descriptors larger than this limit cannot be supported choice USB_HOST_HW_BUFFER_BIAS prompt "Hardware FIFO size biasing" default USB_HOST_HW_BUFFER_BIAS_BALANCED help The underlying hardware has size adjustable FIFOs to cache USB packets on reception (IN) or for transmission (OUT). The size of these FIFOs will affect the largest MPS (maximum packet size) and the maximum number of packets that can be cached at any one time. The hardware contains the following FIFOS: RX (for all IN packets), Non-periodic TX (for Bulk and Control OUT packets), and Periodic TX (for Interrupt and Isochronous OUT packets). This configuration option allows biasing the FIFO sizes towards a particular use case, which may be necessary for devices that have endpoints with large MPS. The MPS limits for each biasing are listed below: Balanced: - IN (all transfer types), 408 bytes - OUT non-periodic (Bulk/Control), 192 bytes (i.e., 3 x 64 byte packets) - OUT periodic (Interrupt/Isochronous), 192 bytes Bias IN: - IN (all transfer types), 600 bytes - OUT non-periodic (Bulk/Control), 64 bytes (i.e., 1 x 64 byte packets) - OUT periodic (Interrupt/Isochronous), 128 bytes Bias Periodic OUT: - IN (all transfer types), 128 bytes - OUT non-periodic (Bulk/Control), 64 bytes (i.e., 1 x 64 byte packets) - OUT periodic (Interrupt/Isochronous), 600 bytes config USB_HOST_HW_BUFFER_BIAS_BALANCED bool "Balanced" config USB_HOST_HW_BUFFER_BIAS_IN bool "Bias IN" config USB_HOST_HW_BUFFER_BIAS_PERIODIC_OUT bool "Periodic OUT" endchoice menu "Root Hub configuration" config USB_HOST_DEBOUNCE_DELAY_MS int "Debounce delay in ms" default 250 help On connection of a USB device, the USB 2.0 specification requires a "debounce interval with a minimum duration of 100ms" to allow the connection to stabilize (see USB 2.0 chapter 7.1.7.3 for more details). During the debounce interval, no new connection/disconnection events are registered. The default value is set to 250 ms to be safe. config USB_HOST_RESET_HOLD_MS int "Reset hold in ms" default 30 help The reset signaling can be generated on any Hub or Host Controller port by request from the USB System Software. The USB 2.0 specification requires that "the reset signaling must be driven for a minimum of 10ms" (see USB 2.0 chapter 7.1.7.5 for more details). After the reset, the hub port will transition to the Enabled state (refer to Section 11.5). The default value is set to 30 ms to be safe. config USB_HOST_RESET_RECOVERY_MS int "Reset recovery delay in ms" default 30 help After a port stops driving the reset signal, the USB 2.0 specification requires that the "USB System Software guarantees a minimum of 10 ms for reset recovery" before the attached device is expected to respond to data transfers (see USB 2.0 chapter 7.1.7.3 for more details). The device may ignore any data transfers during the recovery interval. The default value is set to 30 ms to be safe. config USB_HOST_SET_ADDR_RECOVERY_MS int "SetAddress() recovery time in ms" default 10 help "After successful completion of the Status stage, the device is allowed a SetAddress() recovery interval of 2 ms. At the end of this interval, the device must be able to accept Setup packets addressed to the new address. Also, at the end of the recovery interval, the device must not respond to tokens sent to the old address (unless, of course, the old and new address is the same)." See USB 2.0 chapter 9.2.6.3 for more details. The default value is set to 10 ms to be safe. endmenu #Root Hub configuration config USB_HOST_ENABLE_ENUM_FILTER_CALLBACK bool "Enable enumeration filter callback" default n help The enumeration filter callback is called before enumeration of each newly attached device. This callback allows users to control whether a device should be enumerated, and what configuration number to use when enumerating a device. If enabled, the enumeration filter callback can be set via 'usb_host_config_t' when calling 'usb_host_install()'. config USB_HOST_EXT_HUB_SUPPORT depends on IDF_EXPERIMENTAL_FEATURES bool "Support USB HUB (Experimental)" default n help Feature is under development. # Hidden or compatibility options config USB_OTG_SUPPORTED # Invisible config kept for compatibility # Todo: Remove in v6.0 (IDF-8936) bool default y endmenu #USB-OTG