diff options
Diffstat (limited to 'LUFA/Drivers/USB/LowLevel/Host.h')
| -rw-r--r-- | LUFA/Drivers/USB/LowLevel/Host.h | 146 |
1 files changed, 93 insertions, 53 deletions
diff --git a/LUFA/Drivers/USB/LowLevel/Host.h b/LUFA/Drivers/USB/LowLevel/Host.h index 18eebfec1..1ff2d7ab2 100644 --- a/LUFA/Drivers/USB/LowLevel/Host.h +++ b/LUFA/Drivers/USB/LowLevel/Host.h @@ -34,6 +34,14 @@ * the USB controller is initialized in host mode.
*/
+/** \ingroup Group_USB
+ * @defgroup Group_Host Host Management
+ *
+ * Functions, macros, variables, enums and types related to the management of a USB host when in Host mode.
+ *
+ * @{
+ */
+
#ifndef __USBHOST_H__
#define __USBHOST_H__
@@ -81,64 +89,94 @@ */
#define HOST_DEVICE_SETTLE_DELAY_MS 1500
#endif
-
- /** Resets the USB bus, including the endpoints in any attached device and pipes on the AVR host.
- * USB bus resets leave the default control pipe configured (if already configured).
- *
- * If the USB bus has been suspended prior to issuing a bus reset, the attached device will be
- * woken up automatically and the bus resumed after the reset has been correctly issued.
- */
- #define USB_Host_ResetBus() MACROS{ UHCON |= (1 << RESET); }MACROE
+
+ /* Psuedo-Function Macros: */
+ #if defined(__DOXYGEN__)
+ /** Resets the USB bus, including the endpoints in any attached device and pipes on the AVR host.
+ * USB bus resets leave the default control pipe configured (if already configured).
+ *
+ * If the USB bus has been suspended prior to issuing a bus reset, the attached device will be
+ * woken up automatically and the bus resumed after the reset has been correctly issued.
+ */
+ static inline void USB_Host_ResetBus(void);
- /** Determines if a previously issued bus reset (via the USB_Host_ResetBus() macro) has
- * completed. This macro returns true if no bus reset is currently being sent, false
- * otherwise.
- */
- #define USB_Host_IsResetBusDone() ((UHCON & (1 << RESET)) ? false : true)
-
- /** Resumes USB communications with an attached and enumerated device, by resuming the transmission
- * of the 1MS Start Of Frame messages to the device. When resumed, USB communications between the
- * host and attached device may occur.
- */
- #define USB_Host_ResumeBus() MACROS{ UHCON |= (1 << SOFEN); }MACROE
+ /** Determines if a previously issued bus reset (via the USB_Host_ResetBus() macro) has
+ * completed.
+ *
+ * \return Boolean true if no bus reset is currently being sent, false otherwise.
+ */
+ static inline void USB_Host_IsBusResetComplete(void);
- /** Suspends the USB bus, preventing any communications from occurring between the host and attached
- * device until the bus has been resumed. This stops the transmission of the 1MS Start Of Frame
- * messages to the device.
- */
- #define USB_Host_SuspendBus() MACROS{ UHCON &= ~(1 << SOFEN); }MACROE
-
- /** Returns true if the USB bus has been suspended via the use of the USB_Host_SuspendBus() macro,
- * false otherwise. While suspended, no USB communications can occur until the bus is resumed,
- * except for the Remote Wakeup event from the device if supported.
- */
- #define USB_Host_IsBusSuspended() ((UHCON & (1 << SOFEN)) ? false : true)
-
- /** Returns true if the attached device is currently enumerated in Full Speed mode (12Mb/s), or
- * false if the attached device is enumerated in Low Speed mode (1.5Mb/s).
- */
- #define USB_Host_IsDeviceFullSpeed() ((USBSTA & (1 << SPEED)) ? true : false)
+ /** Resumes USB communications with an attached and enumerated device, by resuming the transmission
+ * of the 1MS Start Of Frame messages to the device. When resumed, USB communications between the
+ * host and attached device may occur.
+ */
+ static inline void USB_Host_ResumeBus(void);
- /** Returns true if the attached device is currently issuing a Remote Wakeup request, requesting
- * that the host resume the USB bus and wake up the device, false otherwise.
- */
- #define USB_Host_IsRemoteWakeupSent() ((UHINT & (1 << RXRSMI)) ? true : false)
+ /** Suspends the USB bus, preventing any communications from occurring between the host and attached
+ * device until the bus has been resumed. This stops the transmission of the 1MS Start Of Frame
+ * messages to the device.
+ */
+ static inline void USB_Host_SuspendBus(void);
+
+ /** Determines if the USB bus has been suspended via the use of the USB_Host_SuspendBus() macro,
+ * false otherwise. While suspended, no USB communications can occur until the bus is resumed,
+ * except for the Remote Wakeup event from the device if supported.
+ *
+ * \return Boolean true if the bus is currently suspended, false otherwise
+ */
+ static inline bool USB_Host_IsBusSuspended(void);
+
+ /** Determines if the attached device is currently enumerated in Full Speed mode (12Mb/s), or
+ * false if the attached device is enumerated in Low Speed mode (1.5Mb/s).
+ *
+ * \return Boolean true if the attached device is enumerated in Full Speed mode, false otherwise
+ */
+ static inline bool USB_Host_IsDeviceFullSpeed(void);
- /** Clears the flag indicating that a Remote Wakeup request has been issued by an attached
- * device.
- */
- #define USB_Host_ClearRemoteWakeupSent() MACROS{ UHINT &= ~(1 << RXRSMI); }MACROE
+ /** Determines if the attached device is currently issuing a Remote Wakeup request, requesting
+ * that the host resume the USB bus and wake up the device, false otherwise.
+ *
+ * \return Boolean true if the attached device has sent a Remote Wakeup request, false otherwise
+ */
+ static inline bool USB_Host_IsRemoteWakeupSent(void);
- /** Accepts a Remote Wakeup request from an attached device. This must be issued in response to
- * a device's Remote Wakeup request within 2ms for the request to be accepted and the bus to
- * be resumed.
- */
- #define USB_Host_ResumeFromWakeupRequest() MACROS{ UHCON |= (1 << RESUME); }MACROE
+ /** Clears the flag indicating that a Remote Wakeup request has been issued by an attached device. */
+ static inline void USB_Host_ClearRemoteWakeupSent(void);
+
+ /** Accepts a Remote Wakeup request from an attached device. This must be issued in response to
+ * a device's Remote Wakeup request within 2ms for the request to be accepted and the bus to
+ * be resumed.
+ */
+ static inline void USB_Host_ResumeFromWakeupRequest(void);
+
+ /** Determines if a resume from Remote Wakeup request is currently being sent to an attached
+ * device.
+ *
+ * \return Boolean true if no resume request is currently being sent, false otherwise
+ */
+ static inline bool USB_Host_IsResumeFromWakeupRequestSent(void);
+ #else
+ #define USB_Host_ResetBus() MACROS{ UHCON |= (1 << RESET); }MACROE
+
+ #define USB_Host_IsBusResetComplete() ((UHCON & (1 << RESET)) ? false : true)
+
+ #define USB_Host_ResumeBus() MACROS{ UHCON |= (1 << SOFEN); }MACROE
+
+ #define USB_Host_SuspendBus() MACROS{ UHCON &= ~(1 << SOFEN); }MACROE
+
+ #define USB_Host_IsBusSuspended() ((UHCON & (1 << SOFEN)) ? false : true)
- /** Returns true if no resume from Remote Wakeup request is currently being sent to an attached
- * device, false otherwise.
- */
- #define USB_Host_IsResumeFromWakeupRequestSent() ((UHCON & (1 << RESUME)) ? false : true)
+ #define USB_Host_IsDeviceFullSpeed() ((USBSTA & (1 << SPEED)) ? true : false)
+
+ #define USB_Host_IsRemoteWakeupSent() ((UHINT & (1 << RXRSMI)) ? true : false)
+
+ #define USB_Host_ClearRemoteWakeupSent() MACROS{ UHINT &= ~(1 << RXRSMI); }MACROE
+
+ #define USB_Host_ResumeFromWakeupRequest() MACROS{ UHCON |= (1 << RESUME); }MACROE
+
+ #define USB_Host_IsResumeFromWakeupRequestSent() ((UHCON & (1 << RESUME)) ? false : true)
+ #endif
/* Enums: */
/** Enum for the various states of the USB Host state machine. Only some states are
@@ -241,5 +279,7 @@ #if defined(__cplusplus)
}
#endif
-
+
#endif
+
+/** @} */
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