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LPCOpen Platform
LPCOpen Platform for NXP LPC Microcontrollers
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Data Structures | |
struct | USB_ClassInfo_MIDI_Host_t |
MIDI Class Host Mode Configuration and State Structure. More... | |
Enumerations | |
enum | MIDI_Host_EnumerationFailure_ErrorCodes_t { MIDI_ENUMERROR_NoError = 0, MIDI_ENUMERROR_InvalidConfigDescriptor = 1, MIDI_ENUMERROR_NoCompatibleInterfaceFound = 2, MIDI_ENUMERROR_PipeConfigurationFailed = 3 } |
Functions | |
uint8_t | MIDI_Host_ConfigurePipes (USB_ClassInfo_MIDI_Host_t *const MIDIInterfaceInfo, uint16_t ConfigDescriptorSize, void *DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3) |
Host interface configuration routine, to configure a given MIDI host interface instance using the Configuration Descriptor read from an attached USB device. This function automatically updates the given MIDI Host instance's state values and configures the pipes required to communicate with the interface if it is found within the device. This should be called once after the stack has enumerated the attached device, while the host state machine is in the Addressed state. | |
void | MIDI_Host_USBTask (USB_ClassInfo_MIDI_Host_t *const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1) |
General management task for a given MIDI host class interface, required for the correct operation of the interface. This should be called frequently in the main program loop, before the master USB management task USB_USBTask(). | |
uint8_t | MIDI_Host_SendEventPacket (USB_ClassInfo_MIDI_Host_t *const MIDIInterfaceInfo, MIDI_EventPacket_t *const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2) |
Sends a MIDI event packet to the device. If no device is connected, the event packet is discarded. | |
uint8_t | MIDI_Host_Flush (USB_ClassInfo_MIDI_Host_t *const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1) |
Flushes the MIDI send buffer, sending any queued MIDI events to the device. This should be called to override the MIDI_Host_SendEventPacket() function's packing behaviour, to flush queued events. Events are queued into the pipe bank until either the pipe bank is full, or MIDI_Host_Flush() is called. This allows for multiple MIDI events to be packed into a single pipe packet, increasing data throughput. | |
bool | MIDI_Host_ReceiveEventPacket (USB_ClassInfo_MIDI_Host_t *const MIDIInterfaceInfo, MIDI_EventPacket_t *const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2) |
Receives a MIDI event packet from the device. | |
The following files must be built with any user project that uses this module:
Host Mode USB Class driver framework interface, for the MIDI USB Class driver.
Enum for the possible error codes returned by the MIDI_Host_ConfigurePipes() function.
Definition at line 103 of file MIDIClassHost.h.
uint8_t MIDI_Host_ConfigurePipes | ( | USB_ClassInfo_MIDI_Host_t *const | MIDIInterfaceInfo, |
uint16_t | ConfigDescriptorSize, | ||
void * | DeviceConfigDescriptor | ||
) |
Host interface configuration routine, to configure a given MIDI host interface instance using the Configuration Descriptor read from an attached USB device. This function automatically updates the given MIDI Host instance's state values and configures the pipes required to communicate with the interface if it is found within the device. This should be called once after the stack has enumerated the attached device, while the host state machine is in the Addressed state.
MIDIInterfaceInfo | : Pointer to a structure containing an MIDI Class host configuration and state. |
ConfigDescriptorSize | : Length of the attached device's Configuration Descriptor. |
DeviceConfigDescriptor | : Pointer to a buffer containing the attached device's Configuration Descriptor. |
Definition at line 42 of file MIDIClassHost.c.
uint8_t MIDI_Host_Flush | ( | USB_ClassInfo_MIDI_Host_t *const | MIDIInterfaceInfo | ) |
Flushes the MIDI send buffer, sending any queued MIDI events to the device. This should be called to override the MIDI_Host_SendEventPacket() function's packing behaviour, to flush queued events. Events are queued into the pipe bank until either the pipe bank is full, or MIDI_Host_Flush() is called. This allows for multiple MIDI events to be packed into a single pipe packet, increasing data throughput.
MIDIInterfaceInfo | : Pointer to a structure containing a MIDI Class configuration and state. |
Definition at line 180 of file MIDIClassHost.c.
bool MIDI_Host_ReceiveEventPacket | ( | USB_ClassInfo_MIDI_Host_t *const | MIDIInterfaceInfo, |
MIDI_EventPacket_t *const | Event | ||
) |
Receives a MIDI event packet from the device.
MIDIInterfaceInfo | : Pointer to a structure containing a MIDI Class configuration and state. |
Event | : Pointer to a USB_MIDI_EventPacket_t structure where the received MIDI event is to be placed. |
true
if a MIDI event packet was received, false
otherwise. Definition at line 219 of file MIDIClassHost.c.
uint8_t MIDI_Host_SendEventPacket | ( | USB_ClassInfo_MIDI_Host_t *const | MIDIInterfaceInfo, |
MIDI_EventPacket_t *const | Event | ||
) |
Sends a MIDI event packet to the device. If no device is connected, the event packet is discarded.
MIDIInterfaceInfo | : Pointer to a structure containing a MIDI Class configuration and state. |
Event | : Pointer to a populated USB_MIDI_EventPacket_t structure containing the MIDI event to send. |
Definition at line 200 of file MIDIClassHost.c.
void MIDI_Host_USBTask | ( | USB_ClassInfo_MIDI_Host_t *const | MIDIInterfaceInfo | ) |
General management task for a given MIDI host class interface, required for the correct operation of the interface. This should be called frequently in the main program loop, before the master USB management task USB_USBTask().
MIDIInterfaceInfo | : Pointer to a structure containing an MIDI Class host configuration and state. |
Definition at line 170 of file MIDIClassHost.c.