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);
}
  
void SendBankChangeMidiEvent(uint8_t CC)
{
  uint8_t midibuff[3] = {0xB0 ,0x00, CC };
  SendMidiDataToDreamDSP(midibuff,3);
}

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';
}

/*
 * Dream BT rename SysEx — reconstructed from factory tool
 *   升级/.../bluetooth_set/set_bl_name.exe
 *   prefixes: f0554c45 (BLE), f0555441 (BT Audio)
 * Format: F0 55 4C 45 <ascii name> F7  /  F0 55 54 41 <ascii name> F7
 * Needs hardware confirmation after first flash.
 */
static void dream_send_name_sysex(uint8_t b1, uint8_t b2, uint8_t b3, const char *name)
{
  uint8_t msg[4 + BLE_DEVICE_NAME_LEN + 1];
  uint8_t n = BLE_DEVICE_NAME_LEN;
  msg[0] = 0xF0;
  msg[1] = b1;
  msg[2] = b2;
  msg[3] = b3;
  memcpy(&msg[4], name, n);
  msg[4 + n] = 0xF7;
  SendMidiDataToDreamDSP(msg, (uint16_t)(5 + n));
}

void Dream_ApplyUniqueBtNames(void)
{
  char name[BLE_DEVICE_NAME_LEN + 1];
  BleBuildDeviceName(name);
  dream_send_name_sysex(0x55, 0x4C, 0x45, name); /* BLE */
  dream_send_name_sysex(0x55, 0x54, 0x41, name); /* BT Audio */
  LOG_I("BT", "dream name set %s", name);
}