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95 lines
2.4 KiB
95 lines
2.4 KiB
#include <Wire.h>
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#include <bombatuino_INPUT_MCP23017.h>
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#include <bombatuino_INPUT_74HC4051.h>
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#include "MIDIUSB.h"
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#define debug true
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//MCP23017 I2C addresses 0,1,2,3 and 4
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INPUT_MCP23017 input_MCP23017_0;
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INPUT_MCP23017 input_MCP23017_1;
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INPUT_MCP23017 input_MCP23017_2;
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INPUT_MCP23017 input_MCP23017_3;
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INPUT_MCP23017 input_MCP23017_4;
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//three 74HC4051 on analog pins A1,A2,A3; select on digital pins 7,8,9
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INPUT_74HC4051 input_4051_A1;
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INPUT_74HC4051 input_4051_A2;
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INPUT_74HC4051 input_4051_A3;
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int channel = 0;
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int velocity = 120;
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const uint8_t NO_PINS = 0b00000000;
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void setup() {
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#ifdef debug
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Serial.begin(9600);
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#endif
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//initialize MCP23017s
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input_MCP23017_0.begin(0,digitalCallback);
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input_MCP23017_1.begin(1,digitalCallback);
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input_MCP23017_2.begin(2,digitalCallback);
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input_MCP23017_3.begin(3,digitalCallback);
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input_MCP23017_4.begin(4,digitalCallback);
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//initialize 74HC4051s
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input_4051_A1.begin(A1,7,8,9,analogCallback);
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input_4051_A1.setPins(0b00001000);
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input_4051_A2.begin(A2,7,8,9,analogCallback);
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input_4051_A2.setPins(NO_PINS);
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input_4051_A3.begin(A3,7,8,9,analogCallback);
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input_4051_A3.setPins(NO_PINS);
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}
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void loop() {
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//loop MCP23017s for callbacks
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input_MCP23017_0.loop();
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input_MCP23017_1.loop();
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input_MCP23017_2.loop();
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input_MCP23017_3.loop();
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input_MCP23017_4.loop();
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//loop 74HC4051s for callback
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input_4051_A1.loop();
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input_4051_A2.loop();
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input_4051_A3.loop();
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MidiUSB.flush();
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}
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//callback for analog, sends CC message with unique controller id
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void analogCallback(int id, int pin, int value) {
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#ifdef debug
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Serial.print("analog");
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Serial.print("\tid\t");
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Serial.print(id-A0);
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Serial.print("\tpin\t");
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Serial.print(pin);
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Serial.print("\tvalue\t");
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Serial.println(value);
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#endif
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midiEventPacket_t event = {0x0B, 0xB0 | channel, ((id-A0) * 8 + pin), value};
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MidiUSB.sendMIDI(event);
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}
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//default callback for buttons, sends note-on/off message with unique note value
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void digitalCallback(int id, int pin, int value) {
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#ifdef debug
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Serial.print("digital");
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Serial.print("\tid\t");
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Serial.print(id);
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Serial.print("\tpin\t");
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Serial.print(pin);
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Serial.print("\tvalue\t");
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Serial.println(value);
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#endif
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if (value == HIGH) {
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midiEventPacket_t noteOn = {0x09, 0x90 | channel, (id * 16 + pin), velocity};
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MidiUSB.sendMIDI(noteOn);
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} else {
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midiEventPacket_t noteOff = {0x08, 0x80 | channel, (id * 16 + pin), 0};
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MidiUSB.sendMIDI(noteOff);
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}
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}
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