Using an Uno and a SparkFun Musical Instrument Shield, this program rings a bell every two seconds:
/*
This code works with the VS1053 Breakout Board and controls the VS1053 in what is called Real Time MIDI mode.
https://www.sparkfun.com/products/10587
5V : VS1053 VCC
GND : VS1053 GND
D3 (SoftSerial TX) : VS1053 RX
D4 : VS1053 RESET
Attach a headphone breakout board to the VS1053:
VS1053 LEFT : TSH
VS1053 RIGHT : RSH
VS1053 GBUF : GND
When in the drum bank (0x78), there are not different instruments, only different notes.
To play the different sounds, select an instrument # like 5, then play notes 27 to 87.
To play "Sticks" (31):
talkMIDI(0xB0, 0, 0x78); //Bank select: drums
talkMIDI(0xC0, 5, 0); //Set instrument number
//Play note on channel 1 (0x90), some note value (note), middle velocity (60):
noteOn(0, 31, 60);
*/
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 3); // RX, TX
byte note = 0; //The MIDI note value to be played
byte resetMIDI = 4; //Tied to VS1053 Reset line
byte ledPin = 13; //MIDI traffic inidicator
int instrument = 0;
void setup()
{
Serial.begin(57600);
//Setup soft serial for MIDI control
mySerial.begin(31250);
//Reset the VS1053
pinMode(resetMIDI, OUTPUT);
digitalWrite(resetMIDI, LOW);
delay(100);
digitalWrite(resetMIDI, HIGH);
delay(100);
talkMIDI(0xB0, 0x07, 120); //0xB0 is channel message, set channel volume to near max (127)
}
void loop()
{
talkMIDI(0xB0, 0, 0x00); //Default bank GM1
talkMIDI(0xC0, 98, 0); //Set instrument number. 0xC0 is a 1 data byte command
//Note on channel 1 (0x90), some note value (note), middle velocity (0x45):
noteOn(0, 98, 60);
delay(50);
//Turn off the note with a given off/release velocity
noteOff(0, 98, 15000);
delay(2000);
}
//Send a MIDI note-on message. Like pressing a piano key
//channel ranges from 0-15
void noteOn(byte channel, byte note, byte attack_velocity) {
talkMIDI( (0x90 | channel), note, attack_velocity);
}
//Send a MIDI note-off message. Like releasing a piano key
void noteOff(byte channel, byte note, byte release_velocity) {
talkMIDI( (0x80 | channel), note, release_velocity);
}
//Plays a MIDI note. Doesn't check to see that cmd is greater than 127, or that data values are less than 127
void talkMIDI(byte cmd, byte data1, byte data2) {
digitalWrite(ledPin, HIGH);
mySerial.write(cmd);
mySerial.write(data1);
//Some commands only have one data byte. All cmds less than 0xBn have 2 data bytes
//(sort of: http://253.ccarh.org/handout/midiprotocol/)
if( (cmd & 0xF0) <= 0xB0)
mySerial.write(data2);
digitalWrite(ledPin, LOW);
}
I have an CC2540 CC2541 AT-09 Serial Wireless Module BLE 4.0 Bluetooth Module Compatible HM-10
It seems the pinout only requires ground, Vcc and Rx (to Arduino's Tx). Right?
I've been looking up tutorials and it seems to be mainly about controlling things like LEDs. Is there a way just to connect it to the MIDI pin 3 and have it transmit the audio? Or is it a lot more complicated? Guidance would be appreciated.
All I want to do is to have that bell sound emit from some Bluetooth speakers.
