First working version :

- pots - keyboard - octave selction
2019-02-22 14:16:22 +01:00
parent 01e81abdde
commit 70ccae1ba4
19 changed files with 1866 additions and 650 deletions
@@ -0,0 +1,122 @@
+/*
+    This file is part of ttymidi.
+
+    ttymidi is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ttymidi is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with ttymidi.  If not, see <http://www.gnu.org/licenses/>.
+*/
+// file version 0.60
+
+#include "ardumidi.h"
+#include "HardwareSerial.h"
+
+void midi_note_off(byte channel, byte key, byte velocity)
+{
+	midi_command(0x80, channel, key, velocity);
+}
+
+void midi_note_on(byte channel, byte key, byte velocity)
+{
+	midi_command(0x90, channel, key, velocity);
+}
+
+void midi_key_pressure(byte channel, byte key, byte value)
+{
+	midi_command(0xA0, channel, key, value);
+}
+
+void midi_controller_change(byte channel, byte control, byte value)
+{
+	midi_command(0xB0, channel, control, value);
+}
+
+void midi_program_change(byte channel, byte program)
+{
+	midi_command_short(0xC0, channel, program);
+}
+
+void midi_channel_pressure(byte channel, byte value)
+{
+	midi_command_short(0xD0, channel, value);
+}
+
+void midi_pitch_bend(byte channel, int value)
+{
+	midi_command(0xE0, channel, value & 0x7F, value >> 7);
+}
+
+void midi_command(byte command, byte channel, byte param1, byte param2)
+{
+	Serial.print(command | (channel & 0x0F), BYTE);
+	Serial.print(param1 & 0x7F, BYTE);
+	Serial.print(param2 & 0x7F, BYTE);
+}
+
+void midi_command_short(byte command, byte channel, byte param1)
+{
+	Serial.print(command | (channel & 0x0F), BYTE);
+	Serial.print(param1 & 0x7F, BYTE);
+}
+
+void midi_print(char* msg, int len)
+{
+	Serial.print(0xFF, BYTE);
+	Serial.print(0x00, BYTE);
+	Serial.print(0x00, BYTE);
+	Serial.print(len , BYTE);
+	Serial.print(msg);
+}
+
+void midi_comment(char* msg)
+{
+	int   len = 0;
+	char* ptr = msg;
+	while (*ptr++) len++;
+	midi_print(msg, len);
+}
+
+int midi_message_available() {
+	/* 
+	   This bit will check that next bytes to be read would actually
+	   have the midi status bit. If not it will remove uncorrect bytes
+	   from internal buffer 
+	   */
+	while ((Serial.available() > 0) && ((Serial.peek() & B10000000) != 0x80)) {
+		Serial.read();
+	}
+
+	/* Well we don't exactly know how many commands there might be in the Serial buffer
+           so we'll just guess it according the type of message that happens to be waiting
+           in the buffer. At least we get first one right! */
+	byte command = Serial.peek() & 11110000;
+	if (command != MIDI_PROGRAM_CHANGE && command != MIDI_CHANNEL_PRESSURE) {
+		return (Serial.available()/2);
+	}
+	return (Serial.available()/3);
+}
+
+MidiMessage read_midi_message() {
+	MidiMessage message;
+	byte midi_status = Serial.read();
+	message.command  = (midi_status & B11110000);
+	message.channel  = (midi_status & B00001111);
+	message.param1   = Serial.read();
+	if (message.command != MIDI_PROGRAM_CHANGE && message.command != MIDI_CHANNEL_PRESSURE) {
+		message.param2   = Serial.read();
+	}
+	return message;
+}
+
+int get_pitch_bend(MidiMessage m) {
+	return (m.param1 & 0x7F) + ((m.param2 & 0x7F) << 7);
+}
+