Updated all host mode demos and projects to use the EVENT_USB_Host_DeviceEnumerationC...

[pub/USBasp.git] / Demos / Host / ClassDriver / MIDIHost / MIDIHost.c

diff --git a/Demos/Host/ClassDriver/MIDIHost/MIDIHost.c b/Demos/Host/ClassDriver/MIDIHost/MIDIHost.c
index b451362..068730c 100644 (file)
--- a/Demos/Host/ClassDriver/MIDIHost/MIDIHost.c
+++ b/Demos/Host/ClassDriver/MIDIHost/MIDIHost.c
@@ -67,63 +67,7 @@ int main(void)
 
        for (;;)
        {
-               switch (USB_HostState)
-               {
-                       case HOST_STATE_Addressed:
-                               LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
-
-                               uint16_t ConfigDescriptorSize;
-                               uint8_t  ConfigDescriptorData[512];
-
-                               if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
-                                                                      sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
-                               {
-                                       puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
-                                       LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
-                                       USB_HostState = HOST_STATE_WaitForDeviceRemoval;
-                                       break;
-                               }
-
-                               if (MIDI_Host_ConfigurePipes(&Keyboard_MIDI_Interface,
-                                                            ConfigDescriptorSize, ConfigDescriptorData) != MIDI_ENUMERROR_NoError)
-                               {
-                                       puts_P(PSTR("Attached Device Not a Valid MIDI Class Device.\r\n"));
-                                       LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
-                                       USB_HostState = HOST_STATE_WaitForDeviceRemoval;
-                                       break;
-                               }
-
-                               if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
-                               {
-                                       puts_P(PSTR("Error Setting Device Configuration.\r\n"));
-                                       LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
-                                       USB_HostState = HOST_STATE_WaitForDeviceRemoval;
-                                       break;
-                               }
-
-                               puts_P(PSTR("MIDI Device Enumerated.\r\n"));
-                               LEDs_SetAllLEDs(LEDMASK_USB_READY);
-                               USB_HostState = HOST_STATE_Configured;
-                               break;
-                       case HOST_STATE_Configured:
-                               CheckJoystickMovement();
-
-                               MIDI_EventPacket_t MIDIEvent;
-                               while (MIDI_Host_ReceiveEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent))
-                               {
-                                       bool NoteOnEvent  = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_ON  >> 4));
-                                       bool NoteOffEvent = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_OFF >> 4));
-
-                                       if (NoteOnEvent || NoteOffEvent)
-                                       {
-                                               printf_P(PSTR("MIDI Note %s - Channel %d, Pitch %d, Velocity %d\r\n"), NoteOnEvent ? "On" : "Off",
-                                                                                                                                                                                      ((MIDIEvent.Data1 & 0x0F) + 1),
-                                                                                                                                                                                      MIDIEvent.Data2, MIDIEvent.Data3);
-                                       }
-                               }
-
-                               break;
-               }
+               JoystickHost_Task();
 
                MIDI_Host_USBTask(&Keyboard_MIDI_Interface);
                USB_USBTask();
@@ -151,6 +95,35 @@ void SetupHardware(void)
        Serial_CreateStream(NULL);
 }
 
+/** Task to manage an enumerated USB MIDI device once connected, to display received
+ *  note events from the host and send note changes in response to tbe board's joystick.
+ */
+void JoystickHost_Task(void)
+{
+       if (USB_HostState != HOST_STATE_Configured)
+         return;
+
+       MIDI_EventPacket_t MIDIEvent;
+       while (MIDI_Host_ReceiveEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent))
+       {
+               bool NoteOnEvent  = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_ON  >> 4));
+               bool NoteOffEvent = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_OFF >> 4));
+
+               /* Display note events from the host */
+               if (NoteOnEvent || NoteOffEvent)
+               {
+                       printf_P(PSTR("MIDI Note %s - Channel %d, Pitch %d, Velocity %d\r\n"), NoteOnEvent ? "On" : "Off",
+                                                                                                                                                                  ((MIDIEvent.Data1 & 0x0F) + 1),
+                                                                                                                                                                  MIDIEvent.Data2, MIDIEvent.Data3);
+               }
+       }
+
+       CheckJoystickMovement();
+}
+
+/** Checks for movement of the board's joystick, and sends corresponding MIDI note on/off
+ *  messages to the host.
+ */
 void CheckJoystickMovement(void)
 {
        static uint8_t PrevJoystickStatus;
@@ -170,26 +143,22 @@ void CheckJoystickMovement(void)
                MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
                MIDIPitch   = 0x3C;
        }
-
-       if (JoystickChanges & JOY_UP)
+       else if (JoystickChanges & JOY_UP)
        {
                MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
                MIDIPitch   = 0x3D;
        }
-
-       if (JoystickChanges & JOY_RIGHT)
+       else if (JoystickChanges & JOY_RIGHT)
        {
                MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
                MIDIPitch   = 0x3E;
        }
-
-       if (JoystickChanges & JOY_DOWN)
+       else if (JoystickChanges & JOY_DOWN)
        {
                MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
                MIDIPitch   = 0x3F;
        }
-
-       if (JoystickChanges & JOY_PRESS)
+       else if (JoystickChanges & JOY_PRESS)
        {
                MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
                MIDIPitch   = 0x3B;
@@ -237,6 +206,35 @@ void EVENT_USB_Host_DeviceUnattached(void)
  */
 void EVENT_USB_Host_DeviceEnumerationComplete(void)
 {
+       LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+
+       uint16_t ConfigDescriptorSize;
+       uint8_t  ConfigDescriptorData[512];
+
+       if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
+                                              sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
+       {
+               puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
+               LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+               return;
+       }
+
+       if (MIDI_Host_ConfigurePipes(&Keyboard_MIDI_Interface,
+                                    ConfigDescriptorSize, ConfigDescriptorData) != MIDI_ENUMERROR_NoError)
+       {
+               puts_P(PSTR("Attached Device Not a Valid MIDI Class Device.\r\n"));
+               LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+               return;
+       }
+
+       if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
+       {
+               puts_P(PSTR("Error Setting Device Configuration.\r\n"));
+               LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+               return;
+       }
+
+       puts_P(PSTR("MIDI Device Enumerated.\r\n"));
        LEDs_SetAllLEDs(LEDMASK_USB_READY);
 }