Chris Arndt / Mbed OS STM32F103_USBMIDI_Switchbox

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Dependencies:   PinDetect USBDevice_STM32F103 mbed-STM32F103C8T6

midiswitch.cpp@8:75c5ec68765e, 2017-08-04 (annotated)

Committer:
SpotlightKid
Date:
Fri Aug 04 05:22:22 2017 +0200
Revision:
8:75c5ec68765e
Parent:
7:553836a26221
Child:
9:d5fa853818dd
Make MIDI message type configurable

Who changed what in which revision?

UserRevisionLine numberNew contents of line
SpotlightKid 7:553836a26221 1 #include "mbed.h"
SpotlightKid 3:8b8cb5392fa0 2 #include "midiswitch.h"
SpotlightKid 3:8b8cb5392fa0 3
SpotlightKid 8:75c5ec68765e 4 SwitchHandler::SwitchHandler(EventQueue * queue, MIDI_CB cb, SwitchConfig sw) :
SpotlightKid 8:75c5ec68765e 5 queue(queue), write_cb(cb), btn(sw.pin), cfg(sw) {
SpotlightKid 8:75c5ec68765e 6 btn.mode(PullUp);
SpotlightKid 7:553836a26221 7 btn.setAssertValue(0);
SpotlightKid 3:8b8cb5392fa0 8 btn.attach_asserted(this, &SwitchHandler::handle_pressed);
SpotlightKid 3:8b8cb5392fa0 9 btn.attach_deasserted(this, &SwitchHandler::handle_released);
SpotlightKid 3:8b8cb5392fa0 10 btn.setSampleFrequency();
SpotlightKid 3:8b8cb5392fa0 11 };
SpotlightKid 3:8b8cb5392fa0 12
SpotlightKid 3:8b8cb5392fa0 13 void SwitchHandler::handle_pressed(void) {
SpotlightKid 8:75c5ec68765e 14 if (cfg.on_value >= 0) {
SpotlightKid 8:75c5ec68765e 15 if (make_message(true)) {
SpotlightKid 8:75c5ec68765e 16 queue->call(write_cb, msg);
SpotlightKid 8:75c5ec68765e 17 }
SpotlightKid 8:75c5ec68765e 18 }
SpotlightKid 3:8b8cb5392fa0 19 };
SpotlightKid 3:8b8cb5392fa0 20
SpotlightKid 3:8b8cb5392fa0 21 void SwitchHandler::handle_released(void) {
SpotlightKid 8:75c5ec68765e 22 if (cfg.off_value >= 0) {
SpotlightKid 8:75c5ec68765e 23 if (make_message(false)) {
SpotlightKid 8:75c5ec68765e 24 queue->call(write_cb, msg);
SpotlightKid 8:75c5ec68765e 25 }
SpotlightKid 8:75c5ec68765e 26 }
SpotlightKid 3:8b8cb5392fa0 27 };
SpotlightKid 8:75c5ec68765e 28
SpotlightKid 8:75c5ec68765e 29 bool SwitchHandler::make_message(bool onoff) {
SpotlightKid 8:75c5ec68765e 30 uint8_t value = (onoff ? cfg.on_value : cfg.off_value) & 0x7F;
SpotlightKid 8:75c5ec68765e 31 msg.data[0] = CABLE_NUM | cfg.type;
SpotlightKid 8:75c5ec68765e 32 msg.data[1] = cfg.type;
SpotlightKid 8:75c5ec68765e 33
SpotlightKid 8:75c5ec68765e 34 switch(cfg.type) {
SpotlightKid 8:75c5ec68765e 35 case 0xFA: // START
SpotlightKid 8:75c5ec68765e 36 case 0xFB: // CONTINUE
SpotlightKid 8:75c5ec68765e 37 case 0xFC: // STOP
SpotlightKid 8:75c5ec68765e 38 msg.data[2] = 0x00;
SpotlightKid 8:75c5ec68765e 39 msg.data[3] = 0x00;
SpotlightKid 8:75c5ec68765e 40 break;
SpotlightKid 8:75c5ec68765e 41 case 0xC0: // Program change
SpotlightKid 8:75c5ec68765e 42 case 0xD0: // Channel Aftertouch
SpotlightKid 8:75c5ec68765e 43 msg.data[1] = msg.data[1] | (cfg.channel & 0x0F);
SpotlightKid 8:75c5ec68765e 44 msg.data[2] = value;
SpotlightKid 8:75c5ec68765e 45 msg.data[3] = 0x00;
SpotlightKid 8:75c5ec68765e 46 break;
SpotlightKid 8:75c5ec68765e 47 case 0x80: // Note off
SpotlightKid 8:75c5ec68765e 48 case 0x90: // Note on
SpotlightKid 8:75c5ec68765e 49 msg.data[1] = msg.data[1] | (cfg.channel & 0x0F);
SpotlightKid 8:75c5ec68765e 50 msg.data[3] = value;
SpotlightKid 8:75c5ec68765e 51 msg.data[2] = cfg.data1;
SpotlightKid 8:75c5ec68765e 52 break;
SpotlightKid 8:75c5ec68765e 53 case 0xA0: // Poly pressure
SpotlightKid 8:75c5ec68765e 54 case 0xB0: // Control change
SpotlightKid 8:75c5ec68765e 55 case 0xE0: // PitchBend
SpotlightKid 8:75c5ec68765e 56 msg.data[1] = msg.data[1] | (cfg.channel & 0x0F);
SpotlightKid 8:75c5ec68765e 57 msg.data[2] = cfg.data1;
SpotlightKid 8:75c5ec68765e 58 msg.data[3] = value;
SpotlightKid 8:75c5ec68765e 59 break;
SpotlightKid 8:75c5ec68765e 60 default:
SpotlightKid 8:75c5ec68765e 61 return false;
SpotlightKid 8:75c5ec68765e 62 }
SpotlightKid 8:75c5ec68765e 63 return true;
SpotlightKid 8:75c5ec68765e 64 };