Commit 6be24e44 authored by Dean Camera's avatar Dean Camera
Browse files

Fixes to the MIDI device demos (ClassDriver, LowLevel); discard unused read-in...

Fixes to the MIDI device demos (ClassDriver, LowLevel); discard unused read-in events from the host, use standard MIDI event structure in low level demo rather than sending individual bytes.
parent 28343b14
......@@ -63,6 +63,9 @@ int main(void)
for (;;)
{
CheckJoystickMovement();
USB_MIDI_EventPacket_t DummyMIDIEvent;
USB_MIDI_ReceiveEventPacket(&Keyboard_MIDI_Interface, &DummyMIDIEvent);
USB_MIDI_USBTask(&Keyboard_MIDI_Interface);
USB_USBTask();
......
......@@ -180,6 +180,4 @@
void EVENT_USB_ConfigurationChanged(void);
void EVENT_USB_UnhandledControlPacket(void);
void UpdateStatus(uint8_t CurrentStatus);
#endif
......@@ -68,15 +68,6 @@
/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
#define LEDMASK_USB_ERROR (LEDS_LED1 | LEDS_LED3)
/* Enums: */
/** Enum for the possible status codes for passing to the UpdateStatus() function. */
enum GenericHID_StatusCodes_t
{
Status_USBNotReady = 0, /**< USB is not ready (disconnected from a USB host) */
Status_USBEnumerating = 1, /**< USB interface is enumerating */
Status_USBReady = 2, /**< USB interface is connected and ready */
};
/* Function Prototypes: */
void SetupHardware(void);
......
......@@ -122,6 +122,9 @@ void MIDI_Task(void)
/* Check if endpoint is ready to be written to */
if (Endpoint_IsINReady())
{
uint8_t MIDICommand = 0;
uint8_t MIDIPitch;
/* Get current joystick mask, XOR with previous to detect joystick changes */
uint8_t JoystickStatus = Joystick_GetStatus();
uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);
......@@ -130,20 +133,55 @@ void MIDI_Task(void)
uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));
if (JoystickChanges & JOY_LEFT)
SendMIDINoteChange(0x3C, (JoystickStatus & JOY_LEFT), 0, Channel);
{
MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
MIDIPitch = 0x3C;
}
if (JoystickChanges & JOY_UP)
SendMIDINoteChange(0x3D, (JoystickStatus & JOY_UP), 0, Channel);
{
MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
MIDIPitch = 0x3D;
}
if (JoystickChanges & JOY_RIGHT)
SendMIDINoteChange(0x3E, (JoystickStatus & JOY_RIGHT), 0, Channel);
{
MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
MIDIPitch = 0x3E;
}
if (JoystickChanges & JOY_DOWN)
SendMIDINoteChange(0x3F, (JoystickStatus & JOY_DOWN), 0, Channel);
{
MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
MIDIPitch = 0x3F;
}
if (JoystickChanges & JOY_PRESS)
SendMIDINoteChange(0x3B, (JoystickStatus & JOY_PRESS), 0, Channel);
{
MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
MIDIPitch = 0x3B;
}
/* Check if a MIDI command is to be sent */
if (MIDICommand)
{
USB_MIDI_EventPacket_t MIDIEvent = (USB_MIDI_EventPacket_t)
{
.CableNumber = 0,
.Command = MIDICommand,
.Data1 = (MIDICommand << 4) | Channel,
.Data2 = MIDIPitch,
.Data3 = MIDI_STANDARD_VELOCITY,
};
/* Write the MIDI event packet to the endpoint */
Endpoint_Write_Stream_LE(&MIDIEvent, sizeof(MIDIEvent));
/* Send the data in the endpoint to the host */
Endpoint_ClearIN();
}
/* Save previous joystick value for next joystick change detection */
PrevJoystickStatus = JoystickStatus;
}
......@@ -155,31 +193,3 @@ void MIDI_Task(void)
if (Endpoint_IsOUTReceived())
Endpoint_ClearOUT();
}
/** Sends a MIDI note change event (note on or off) to the MIDI output jack, on the given virtual cable ID and channel.
*
* \param Pitch Pitch of the note to turn on or off
* \param OnOff Set to true if the note is on (being held down), or false otherwise
* \param CableID ID of the virtual cable to send the note change to
* \param Channel MIDI channel number to send the note change event to
*/
void SendMIDINoteChange(const uint8_t Pitch, const bool OnOff, const uint8_t CableID, const uint8_t Channel)
{
/* If endpoint ready for more data, abort */
if (!(Endpoint_IsReadWriteAllowed()))
return;
/* Check if the message should be a Note On or Note Off command */
uint8_t Command = ((OnOff)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
/* Write the Packet Header to the endpoint */
Endpoint_Write_Byte((CableID << 4) | (Command >> 4));
/* Write the Note On/Off command with the specified channel, pitch and velocity */
Endpoint_Write_Byte(Command | Channel);
Endpoint_Write_Byte(Pitch);
Endpoint_Write_Byte(MIDI_STANDARD_VELOCITY);
/* Send the data in the endpoint to the host */
Endpoint_ClearIN();
}
......@@ -52,10 +52,10 @@
/* Macros: */
/** MIDI command for a note on (activation) event */
#define MIDI_COMMAND_NOTE_ON 0x90
#define MIDI_COMMAND_NOTE_ON 0x09
/** MIDI command for a note off (deactivation) event */
#define MIDI_COMMAND_NOTE_OFF 0x80
#define MIDI_COMMAND_NOTE_OFF 0x08
/** Standard key press velocity value used for all note events, as no pressure sensor is mounted */
#define MIDI_STANDARD_VELOCITY 64
......@@ -78,6 +78,18 @@
/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
#define LEDMASK_USB_ERROR (LEDS_LED1 | LEDS_LED3)
/* Type Defines: */
/** Type define for a USB MIDI event packet, used to encapsulate sent and received MIDI messages from a USB MIDI interface. */
typedef struct
{
unsigned char Command : 4; /**< MIDI command being sent or received in the event packet */
unsigned char CableNumber : 4; /**< Virtual cable number of the event being sent or received in the given MIDI interface */
uint8_t Data1; /**< First byte of data in the MIDI event */
uint8_t Data2; /**< Second byte of data in the MIDI event */
uint8_t Data3; /**< Third byte of data in the MIDI event */
} USB_MIDI_EventPacket_t;
/* Function Prototypes: */
void SetupHardware(void);
......@@ -86,9 +98,5 @@
void EVENT_USB_Connect(void);
void EVENT_USB_Disconnect(void);
void EVENT_USB_ConfigurationChanged(void);
void SendMIDINoteChange(const uint8_t Pitch, const bool OnOff,
const uint8_t CableID, const uint8_t Channel);
void UpdateStatus(uint8_t CurrentStatus);
#endif
......@@ -107,6 +107,5 @@
void EVENT_USB_UnhandledControlPacket(void);
void CreateMouseReport(USB_MouseReport_Data_t* ReportData);
void UpdateStatus(uint8_t CurrentStatus);
#endif
......@@ -172,14 +172,6 @@
Parity_Mark = 3, /**< Mark parity bit mode on each frame */
Parity_Space = 4, /**< Space parity bit mode on each frame */
};
/** Enum for the possible status codes for passing to the UpdateStatus() function. */
enum USBtoSerial_StatusCodes_t
{
Status_USBNotReady = 0, /**< USB is not ready (disconnected from a USB host) */
Status_USBEnumerating = 1, /**< USB interface is enumerating */
Status_USBReady = 2, /**< USB interface is connected and ready */
};
/* Function Prototypes: */
void SetupHardware(void);
......
......@@ -68,19 +68,6 @@
/* Task Definitions: */
void Bluetooth_Management_Task(void);
/* Enums: */
/** Enum for the possible status codes for passing to the UpdateStatus() function. */
enum MouseHostViaInt_StatusCodes_t
{
Status_USBNotReady = 0, /**< USB is not ready (disconnected from a USB device) */
Status_USBEnumerating = 1, /**< USB interface is enumerating */
Status_USBReady = 2, /**< USB interface is connected and ready */
Status_EnumerationError = 3, /**< Software error while enumerating the attached USB device */
Status_HardwareError = 4, /**< Hardware error while enumerating the attached USB device */
Status_BluetoothConnected = 5, /**< Bluetooth stack connected to device and idle */
Status_BluetoothBusy = 6, /**< Bluetooth stack busy */
};
/* Event Handlers: */
void EVENT_USB_DeviceAttached(void);
......
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