2 \defgroup usb_interface_gr USB Interface
3 \brief USB common definitions (%Driver_USB.h)
5 The <b>Universal Serial Bus</b> (USB) implements a serial bus for data exchange. It is a host controlled, plug-and-play interface
6 between a USB host and USB devices using a tiered star topology.
7 In microcontroller (MCU) applications, the interface is often used to connect a device to a host for data exchange or control purposes.
9 - Wikipedia offers more information about the <a href="https://en.wikipedia.org/wiki/Universal_Serial_Bus" target="_blank"><b>Universal Serial Bus</b></a>.
10 - The USB Implementers Forum provides detailed documentation under <a href="https://www.usb.org"><b>www.usb.org</b></a>.
15 Typically only one USB Device is connected to a USB Host. If several USB devices must be connected to the same USB host, then
16 the connection must be done via a USB hub.
19 \image html USB_Schematics.png "Simplified USB Schema"
25 The following header files define the Application Programming Interface (API) for the USB interface:
26 - \b %Driver_USB.h : Common definitions of the USBD and USBH interface
27 - \b %Driver_USBD.h : Driver API for USB Device Peripheral
28 - \b %Driver_USBH.h : Driver API for USB Host Peripheral
30 The driver implementation is a typical part of the Device Family Pack (DFP) that supports the
31 peripherals of the microcontroller family.
34 <b>Driver Functions</b>
36 The driver functions are published in the access struct as explained in \ref DriverFunctions
37 - \ref ARM_DRIVER_USBD : access struct for USBD driver functions
38 - \ref ARM_DRIVER_USBH : access struct for USBH driver functions
45 \addtogroup usbd_interface_gr
46 \ingroup usb_interface_gr
51 The header file \b Driver_USBD.h defines the API for the <b>USB Device Driver</b> interface used by middleware components.
52 The driver implementation itself is a typical part of the Device Family Pack, which provides entry points to the interface
53 as function pointers in the struct \ref ARM_DRIVER_USBD. This structure can be available several times in each interface to control multiple USBD interfaces.
55 Header file \b Driver_USBD.h also defines callback routines that can be categorized as
56 <b>device event callbacks</b> and <b>endpoint event callbacks</b>.
57 Callbacks are called by the driver, in interrupt context when an appropriate event occurs, to signal device related events (\ref USBD_dev_events)
58 and endpoint related events (\ref USBD_ep_events).
61 <b>USB Device Function Call Sequence</b>
63 To use the USBD driver invoke the API functions in the following order:
66 a [label="", textcolor="indigo", linecolor="indigo", arclinecolor="red"],
67 b [label="", textcolor="blue", linecolor="blue", arclinecolor="blue"];
69 a rbox a [label="Middleware", linecolor="indigo"],
70 b rbox b [label="USBD Driver", linecolor="blue"];
71 a=>b [label="ARM_USBD_Initialize", URL="\ref ARM_USBD_Initialize"];
72 a=>b [label="ARM_USBD_PowerControl (ARM_POWER_FULL)", URL="\ref ARM_USBD_Initialize"];
73 a=>b [label="ARM_USBD_DeviceConnect", URL="\ref ARM_USBD_DeviceConnect"];
74 a<=b [label="ARM_USBD_SignalDeviceEvent (ARM_USBD_EVENT_RESET)", URL="\ref ARM_USBD_SignalDeviceEvent", linecolor="orange"];
75 a=>b [label="ARM_USBD_DeviceGetState", URL="\ref ARM_USBD_DeviceGetState"];
76 a=>b [label="ARM_USBD_EndpointConfigure", URL="\ref ARM_USBD_EndpointConfigure", linecolor="green"];
77 --- [label="Repeat and use as needed"];
78 a=>b [label="ARM_USBD_EndpointTransfer", URL="\ref ARM_USBD_EndpointTransfer", linecolor="green"];
79 a<=b [label="ARM_USBD_SignalEndpointEvent", URL="\ref ARM_USBD_SignalEndpointEvent", linecolor="orange"];
80 a=>b [label="ARM_USBD_EndpointTransferGetResult", URL="\ref ARM_USBD_EndpointTransferGetResult", linecolor="green"];
81 --- [label="Repeat End"];
82 a=>b [label="ARM_USBD_DeviceDisconnect", URL="\ref ARM_USBD_DeviceDisconnect"];
83 a=>b [label="ARM_USBD_PowerControl (ARM_POWER_OFF)", URL="\ref ARM_USBD_Initialize"];
84 a=>b [label="ARM_USBD_Uninitialize", URL="\ref ARM_USBD_Uninitialize"];
90 \addtogroup usbh_interface_gr
91 \ingroup usb_interface_gr
95 The header file \b Driver_USBH.h defines the API for the <b>USB Host Driver</b> interface used by middleware components.
96 The driver implementation itself is a typical part of the Device Family Pack, which provides entry points to the interface
97 as function pointers in the struct \ref ARM_DRIVER_USBH. This structure can be available several times in each interface to control multiple USBH interfaces.
99 \b Driver_USBH.h also defines callback routines, which are categorized in
100 <b>port event callbacks</b> and <b>pipe event callbacks</b>.
101 Callbacks are called by the driver, in interrupt context when an appropriate event occurs, to signal port related events (\ref ARM_USBH_SignalPortEvent)
102 and pipe related events (\ref ARM_USBH_SignalPipeEvent).
106 <b>USB Host Function Call Sequence</b>
108 To use the USBH driver invoke the API functions in the following order:
111 a [label="", textcolor="indigo", linecolor="indigo", arclinecolor="red"],
112 b [label="", textcolor="blue", linecolor="blue", arclinecolor="blue"];
114 a rbox a [label="Middleware", linecolor="indigo"],
115 b rbox b [label="USBH Driver", linecolor="blue"];
116 a=>b [label="ARM_USBH_Initialize", URL="\ref ARM_USBD_Initialize"];
117 --- [label="Repeat and use as needed"];
118 --- [label="Repeat End"];
119 a=>b [label="ARM_USBH_Uninitialize", URL="\ref ARM_USBH_Uninitialize"];
129 \defgroup USB_speed USB Speed
130 \ingroup usb_interface_gr
131 \brief USB Speed definitions
133 The following USB speed values are defined:
135 \def ARM_USB_SPEED_LOW
136 \def ARM_USB_SPEED_FULL
137 \def ARM_USB_SPEED_HIGH
142 \defgroup USB_endpoint_type USB Endpoint Type
143 \ingroup usb_interface_gr
144 \brief USB Endpoint Type definitions
146 The following USB Endpoint Type values are defined:
148 \def ARM_USB_ENDPOINT_CONTROL
149 \def ARM_USB_ENDPOINT_ISOCHRONOUS
150 \def ARM_USB_ENDPOINT_BULK
151 \def ARM_USB_ENDPOINT_INTERRUPT