Jose Rios
Basic example for send MIDI messages
Revision 0:2f27565123e1, committed 2014-09-29
- Comitter:
- jose_23991
- Date:
- Mon Sep 29 15:45:18 2014 +0000
- Commit message:
- Version 1.0
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Sep 29 15:45:18 2014 +0000
@@ -0,0 +1,34 @@
+#include "mbed.h"
+#include "midii.h"
+
+#define MIDI_SERIAL_TX PA_2
+#define MIDI_SERIAL_RX PA_3
+
+MIDII midi(MIDI_SERIAL_TX, MIDI_SERIAL_RX);
+
+int main()
+{
+ while(1)
+ {
+ //Note 'D' in fifth octave on channel 1 at middle velocity (0x45)
+ midi.noteOn(CH_1, D, OCTAVE_5, 0x45);
+ wait(0.75);
+ midi.noteOff(CH_1, D, OCTAVE_5, 0x45);
+ wait(0.25);
+
+ //Note 'E' in fifth octave on channel 1 at middle velocity (0x45)
+ midi.noteOn(CH_1, E, OCTAVE_5, 0x45);
+ wait(0.75);
+ midi.noteOff(CH_1, E, OCTAVE_5, 0x45);
+ wait(0.25);
+
+ //Note 'G#' in fifth octave on channel 1 at middle velocity (0x45)
+ midi.noteOn(CH_1, G_, OCTAVE_5, 0x45);
+ wait(0.75);
+ midi.noteOff(CH_1, G, OCTAVE_5, 0x45);
+ wait(0.25);
+
+ wait(3);
+ }
+}
+
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Sep 29 15:45:18 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/midii.cpp Mon Sep 29 15:45:18 2014 +0000
@@ -0,0 +1,69 @@
+#include "midii.h"
+#include "mbed.h"
+
+MIDII::MIDII(PinName p_tx, PinName p_rx) : serial(p_tx, p_rx)
+{
+ serial.baud(MIDI_VELOCITY);
+ notes_init();
+}
+
+MIDII::~MIDII()
+{}
+
+void MIDII::noteOn(unsigned int channel, unsigned int key, unsigned int octave, unsigned int velocity)
+{
+ if(channel > CH_16)
+ channel = CH_16;
+ if(velocity > 127)
+ velocity = 127;
+ if(octave > 10)
+ octave = 10;
+
+ serial.putc(NOTE_ON & channel);
+ serial.putc(note[octave][key]);
+ serial.putc(velocity);
+}
+
+void MIDII::noteOff(unsigned int channel, unsigned int key, unsigned int octave, unsigned int velocity)
+{
+ if(channel > CH_16)
+ channel = CH_16;
+ if(velocity > 127)
+ velocity = 127;
+
+ serial.putc(NOTE_OFF & channel);
+ serial.putc(key);
+ serial.putc(velocity);
+}
+
+void MIDII::programChange(unsigned int channel, unsigned int program)
+{
+ if(channel > CH_16)
+ channel = CH_16;
+
+ serial.putc(NOTE_PROGRAM_CHANGE & channel);
+ serial.putc(program);
+}
+
+//send MIDI message
+void MIDII::MIDImessage(unsigned int command, unsigned int channel, unsigned int note, unsigned int octave, unsigned int velocity)
+{
+ serial.putc(command & channel);//send note on or note off command
+ serial.putc(note);//send pitch data
+ serial.putc(velocity);//send velocity data
+}
+
+void MIDII::notes_init()
+{
+ int a, b, c;
+
+ c = 0;
+ for(a = 0; a < OCTAVE; a++)
+ {
+ for(b = 0; b < NUMBER; b++)
+ {
+ note[a][b] = c;
+ c++;
+ }
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/midii.h Mon Sep 29 15:45:18 2014 +0000
@@ -0,0 +1,111 @@
+#ifndef MIDII_h
+ #define MIDII_h
+
+ #include "mbed.h"
+
+ #define MIDI_VELOCITY 31250
+
+ #define NOTE_OFF 0x8 // B1000
+ #define NOTE_ON 0x9 // B1001
+ #define NOTE_POLY_AFTERTOUCH 0xA // B1010
+ #define NOTE_CONTROL_CHANGE 0xB // B1011
+ #define NOTE_PROGRAM_CHANGE 0xC // B1100
+ #define NOTE_AFTERTOUCH 0xD // B1101
+ #define NOTE_PITCH_BEND 0xE // B1110
+ #define NOTE_CONFIG 0xF // B1111
+
+ #define CH_1 0x0 // B0000
+ #define CH_2 0x1 // B0001
+ #define CH_3 0x2 // B0010
+ #define CH_4 0x3 // B0011
+ #define CH_5 0x4 // B0100
+ #define CH_6 0x5 // B0101
+ #define CH_7 0x6 // B0110
+ #define CH_8 0x7 // B0111
+ #define CH_9 0x8 // B1000
+ #define CH_10 0x9 // B1001
+ #define CH_11 0xA // B1010
+ #define CH_12 0xB // B1011
+ #define CH_13 0xC // B1100
+ #define CH_14 0xD // B1101
+ #define CH_15 0xE // B1110
+ #define CH_16 0xF // B1111
+
+ #define C 0
+ #define C_ 1
+ #define D 2
+ #define D_ 3
+ #define E 4
+ #define F 5
+ #define F_ 6
+ #define G 7
+ #define G_ 8
+ #define A 9
+ #define A_ 10
+ #define B 11
+
+ #define OCTAVE_0 0
+ #define OCTAVE_1 1
+ #define OCTAVE_2 2
+ #define OCTAVE_3 3
+ #define OCTAVE_4 4
+ #define OCTAVE_5 5
+ #define OCTAVE_6 6
+ #define OCTAVE_7 7
+ #define OCTAVE_8 8
+ #define OCTAVE_9 9
+ #define OCTAVE_10 10
+
+ #define NUMBER 12
+ #define OCTAVE 11
+
+ /*
+ Note Numbers
+ Octave C C# D D# E F F# G G# A A# B
+ 0 0 1 2 3 4 5 6 7 8 9 10 11
+ 1 12 13 14 15 16 17 18 19 20 21 22 23
+ 2 24 25 26 27 28 29 30 31 32 33 34 35
+ 3 36 37 38 39 40 41 42 43 44 45 46 47
+ 4 48 49 50 51 52 53 54 55 56 57 58 59
+ 5 60 61 62 63 64 65 66 67 68 69 70 71
+ 6 72 73 74 75 76 77 78 79 80 81 82 83
+ 7 84 85 86 87 88 89 90 91 92 93 94 95
+ 8 96 97 98 99 100 101 102 103 104 105 106 107
+ 9 108 109 110 111 112 113 114 115 116 117 118 119
+ 10 120 121 122 123 124 125 126 127
+ */
+
+ /*typedef int n[OCTAVE][NUMBER] =
+ {
+ {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11},
+ {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23},
+ {24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35},
+ {36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47},
+ {48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59},
+ {60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71},
+ {72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83},
+ {84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95},
+ {96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107},
+ {108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119},
+ {120, 121, 122, 123, 124, 125, 126, 127, 0, 0, 0, 0}
+ }NOTES;*/
+
+ class MIDII
+ {
+ public:
+ MIDII(PinName p_tx, PinName p_rx);
+ ~MIDII();
+ void noteOn(unsigned int channel, unsigned int key, unsigned int octave, unsigned int velocity);
+ void noteOff(unsigned int channel, unsigned int key, unsigned int octave, unsigned int velocity);
+ void programChange(unsigned int channel, unsigned int program);
+ void MIDImessage(unsigned int command, unsigned int channel, unsigned int note, unsigned int octave, unsigned int velocity);
+
+ private:
+ int note[OCTAVE][NUMBER];
+ Serial serial;
+
+ void notes_init();
+
+ };
+
+#endif
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