K1Guitar/midi/midi_send.c

#include "includes.h"

// Note Off 0x8n
void SendNoteOffMidiEvent(uint8_t Key, uint8_t OffVal)
{
  uint8_t midibuff[3] = {0x80 , Key , OffVal};
  USART2_SendData(midibuff,sizeof(midibuff));
}

// Note On 0x9n
void SendNoteOnMidiEvent(uint8_t Key, uint8_t OnVal)
{
  uint8_t midibuff[3] = {0x90 , Key , OnVal};
  USART2_SendData(midibuff,sizeof(midibuff));
}


void SendProgramChangeMidiEvent(uint8_t channel,uint8_t CC)
{
  uint8_t midibuff[2] = {0xC0|channel , CC };
  SendMidiDataToDreamDSP(midibuff,2);
}

void SendVolumeChangeMidiEvent(uint8_t channel,uint8_t CC)
{
  uint8_t midibuff[3] = {0xB0|channel ,0x07, CC };
  SendMidiDataToDreamDSP(midibuff,3);
}
  
/* Bank Select：CC0(MSB)=bank，CC32(LSB)=0。Dream 双音色库：0=伴奏，1=主弦 */
void SendBankChangeMidiEvent(uint8_t channel, uint8_t bank)
{
  uint8_t midibuff[3] = {0xB0|(channel & 0x0F) ,0x00, bank };
  SendMidiDataToDreamDSP(midibuff,3);
  midibuff[1] = 0x20;  /* CC32 Bank LSB */
  midibuff[2] = 0;
  SendMidiDataToDreamDSP(midibuff,3);
}

/* 先选 Bank 再 Program Change，避免漏发 Bank Select 落到错误音色库 */
void SendProgramWithBankMidiEvent(uint8_t channel, uint8_t bank, uint8_t program)
{
  SendBankChangeMidiEvent(channel, bank);
  SendProgramChangeMidiEvent(channel, program);
}

void SendMidiDataToDreamDSP(uint8_t* buff, uint16_t cnt)
{  
        USART2_SendData(buff,cnt);
}

#define AT32_UID_BASE  0x1FFFF7E8UL

void BleBuildDeviceName(char *out)
{
  static const char hex[] = "0123456789ABCDEF";
  const uint32_t *uid = (const uint32_t *)AT32_UID_BASE;
  uint32_t tail = uid[2] & 0x00FFFFFFu;
  unsigned i;

  out[0] = 'P';
  out[1] = 'H';
  out[2] = 'O';
  out[3] = 'N';
  out[4] = '_';
  for (i = 0; i < 6; i++)
    out[5 + i] = hex[(tail >> (4 * (5 - i))) & 0xFu];
  out[BLE_DEVICE_NAME_LEN] = '\0';
}