ref: 21f5ac6f65245a6d5f1b63b0f1a38d4001f1d5dc
dir: /LEAF/Src/MIDI_application.c/
/*
* MIDI_application.c
*
* Created on: 6 d�c. 2014
* Author: Xavier Halgand
*
* Modified on: 9/12/16 by C.P. to handle the MIDI_IDLE state properly, and
* added required code to be compatible with "NucleoSynth"
*
* 11/8/17 by C.P.: Version 0.7.7 - Use for Casio CTK-6200 Keyboard
*/
/* Includes ------------------------------------------------------------------*/
#include "audiostream.h"
#include "MIDI_application.h"
#include "usbh_core.h"
#include "usbh_MIDI.h"
#include "usb_host.h"
#include "sfx.h"
MIDI_ApplicationTypeDef MIDI_Appli_state = MIDI_APPLICATION_READY;
extern ApplicationTypeDef Appli_state;
extern USBH_HandleTypeDef hUsbHostFS;
uint8_t MIDI_RX_Buffer[RX_BUFF_SIZE]__ATTR_RAM_D2; // MIDI reception buffer
uint8_t key, velocity, ctrl, data, sustainInverted;
uint8_t CCs[128];
/* Private define ------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/*-----------------------------------------------------------------------------*/
/**
* @brief Main routine for MIDI application, looped in main.c
* @param None
* @retval none
*/
void MIDI_Application(void)
{
if(Appli_state == APPLICATION_READY)
{
if(MIDI_Appli_state == MIDI_APPLICATION_READY)
{
USBH_MIDI_Receive(&hUsbHostFS, MIDI_RX_Buffer, RX_BUFF_SIZE); // just once at the beginning, start the first reception
MIDI_Appli_state = MIDI_APPLICATION_RUNNING;
}
}
if(Appli_state == APPLICATION_DISCONNECT)
{
MIDI_Appli_state = MIDI_APPLICATION_READY;
USBH_MIDI_Stop(&hUsbHostFS);
}
}
/*-----------------------------------------------------------------------------*/
void ProcessReceivedMidiDatas(uint32_t myLength)
{
uint16_t numberOfPackets;
uint8_t *ptr = MIDI_RX_Buffer;
midi_package_t pack;
numberOfPackets = myLength >> 2; //each USB midi package is 4 bytes long
if (numberOfPackets != 0)
{
while(numberOfPackets--)
{
pack.cin_cable = *ptr ; ptr++ ;
pack.evnt0 = *ptr ; ptr++ ;
pack.evnt1 = *ptr ; ptr++ ;
pack.evnt2 = *ptr ; ptr++ ;
// Handle MIDI messages
switch(pack.evnt0)
{
case (0x80): // Note Off
key = pack.evnt1;
velocity = pack.evnt2;
noteOff(key, velocity);
break;
case (0x90): // Note On
key = pack.evnt1;
velocity = pack.evnt2;
noteOn(key, velocity);
break;
case (0xA0):
break;
case (0xB0):
ctrl = pack.evnt1;
data = pack.evnt2;
CCs[ctrl] = data;
switch(ctrl)
{
case (0x01):
break;
case (0x02):
break;
case (0x03):
break;
case (0x04):
break;
case (0x0D):
break;
case (0x4B):
break;
case (0x4C):
break;
case (0x5C):
break;
case (0x5F):
break;
case (0x49):
break;
case (0x48):
break;
case (0x5B):
break;
case (0x5D):
break;
case (0x4A):
break;
case (0x47):
break;
case (0x05):
break;
case (0x54):
break;
case (0x10):
break;
case (0x11):
break;
case (0x12):
break;
case (0x07):
break;
case (0x13):
break;
case (0x14):
break;
case (64): // sustain
if (data)
{
if (sustainInverted) sustainOff();
else sustainOn();
}
else
{
if (sustainInverted) sustainOn();
else sustainOff();
}
break;
}
break;
case (0xC0): // Program Change
break;
case (0xD0): // Mono Aftertouch
break;
case (0xE0): // Pitch Bend
pitchBend((pack.evnt1) + (pack.evnt2 << 7));
break;
case (0xF0):
break;
}
}
}
}
/*-----------------------------------------------------------------------------*/
/**
* @brief MIDI data receive callback.
* @param phost: Host handle
* @retval None
*/
void USBH_MIDI_ReceiveCallback(USBH_HandleTypeDef *phost, uint32_t myLength)
{
ProcessReceivedMidiDatas(myLength);
USBH_MIDI_Receive(&hUsbHostFS, MIDI_RX_Buffer, RX_BUFF_SIZE); // start a new reception
}