David Bottrill / Mbed 2 deprecated MIDI Stop Controller

MIDI Stop Controller V1.0 suitable for driving Hauptwerk digital organ software. Written for the KL25Z uses BusInOut and will drive up to 16 illuminated push buttons each switch uses a single I/O pin to both drive the LED and act as a switch input. Pressing a button will alternately send MIDI note on / off messages and turn the LED on or off. If corresponding MIDI note on/off messages are received these will be used to drive the LEDs in preference to the locally generated LED signals. The MIDI channel used to send can be selected by jumpers on 4 pins of the J2 header.

Dependencies:   mbed

USBMIDI/USBMIDI.cpp@0:aac55e1fc12f, 2013-09-14 (annotated)

Committer:
djbottrill
Date:
Sat Sep 14 21:32:06 2013 +0000
Revision:
0:aac55e1fc12f
V1.0 MIDI Stop Controller

Who changed what in which revision?

UserRevisionLine numberNew contents of line
djbottrill 0:aac55e1fc12f 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
djbottrill 0:aac55e1fc12f 2 *
djbottrill 0:aac55e1fc12f 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
djbottrill 0:aac55e1fc12f 4 * and associated documentation files (the "Software"), to deal in the Software without
djbottrill 0:aac55e1fc12f 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
djbottrill 0:aac55e1fc12f 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
djbottrill 0:aac55e1fc12f 7 * Software is furnished to do so, subject to the following conditions:
djbottrill 0:aac55e1fc12f 8 *
djbottrill 0:aac55e1fc12f 9 * The above copyright notice and this permission notice shall be included in all copies or
djbottrill 0:aac55e1fc12f 10 * substantial portions of the Software.
djbottrill 0:aac55e1fc12f 11 *
djbottrill 0:aac55e1fc12f 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
djbottrill 0:aac55e1fc12f 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
djbottrill 0:aac55e1fc12f 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
djbottrill 0:aac55e1fc12f 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
djbottrill 0:aac55e1fc12f 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
djbottrill 0:aac55e1fc12f 17 */
djbottrill 0:aac55e1fc12f 18
djbottrill 0:aac55e1fc12f 19 #include "stdint.h"
djbottrill 0:aac55e1fc12f 20 #include "USBMIDI.h"
djbottrill 0:aac55e1fc12f 21
djbottrill 0:aac55e1fc12f 22
djbottrill 0:aac55e1fc12f 23 USBMIDI::USBMIDI(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
djbottrill 0:aac55e1fc12f 24 midi_evt = NULL;
djbottrill 0:aac55e1fc12f 25 USBDevice::connect();
djbottrill 0:aac55e1fc12f 26 }
djbottrill 0:aac55e1fc12f 27
djbottrill 0:aac55e1fc12f 28 void USBMIDI::write(MIDIMessage m) {
djbottrill 0:aac55e1fc12f 29 USBDevice::write(EPBULK_IN, m.data, 4, MAX_PACKET_SIZE_EPBULK);
djbottrill 0:aac55e1fc12f 30 }
djbottrill 0:aac55e1fc12f 31
djbottrill 0:aac55e1fc12f 32
djbottrill 0:aac55e1fc12f 33 void USBMIDI::attach(void (*fptr)(MIDIMessage)) {
djbottrill 0:aac55e1fc12f 34 midi_evt = fptr;
djbottrill 0:aac55e1fc12f 35 }
djbottrill 0:aac55e1fc12f 36
djbottrill 0:aac55e1fc12f 37
djbottrill 0:aac55e1fc12f 38 bool USBMIDI::EP2_OUT_callback() {
djbottrill 0:aac55e1fc12f 39 uint8_t buf[64];
djbottrill 0:aac55e1fc12f 40 uint32_t len;
djbottrill 0:aac55e1fc12f 41 readEP(EPBULK_OUT, buf, &len, 64);
djbottrill 0:aac55e1fc12f 42
djbottrill 0:aac55e1fc12f 43 if (midi_evt != NULL) {
djbottrill 0:aac55e1fc12f 44 for (int i=0; i<len; i+=4) {
djbottrill 0:aac55e1fc12f 45 midi_evt(MIDIMessage(buf+i));
djbottrill 0:aac55e1fc12f 46 }
djbottrill 0:aac55e1fc12f 47 }
djbottrill 0:aac55e1fc12f 48
djbottrill 0:aac55e1fc12f 49 // We reactivate the endpoint to receive next characters
djbottrill 0:aac55e1fc12f 50 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
djbottrill 0:aac55e1fc12f 51 return true;
djbottrill 0:aac55e1fc12f 52 }
djbottrill 0:aac55e1fc12f 53
djbottrill 0:aac55e1fc12f 54
djbottrill 0:aac55e1fc12f 55
djbottrill 0:aac55e1fc12f 56 // Called in ISR context
djbottrill 0:aac55e1fc12f 57 // Set configuration. Return false if the
djbottrill 0:aac55e1fc12f 58 // configuration is not supported.
djbottrill 0:aac55e1fc12f 59 bool USBMIDI::USBCallback_setConfiguration(uint8_t configuration) {
djbottrill 0:aac55e1fc12f 60 if (configuration != DEFAULT_CONFIGURATION) {
djbottrill 0:aac55e1fc12f 61 return false;
djbottrill 0:aac55e1fc12f 62 }
djbottrill 0:aac55e1fc12f 63
djbottrill 0:aac55e1fc12f 64 // Configure endpoints > 0
djbottrill 0:aac55e1fc12f 65 addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
djbottrill 0:aac55e1fc12f 66 addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
djbottrill 0:aac55e1fc12f 67
djbottrill 0:aac55e1fc12f 68 // We activate the endpoint to be able to receive data
djbottrill 0:aac55e1fc12f 69 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
djbottrill 0:aac55e1fc12f 70 return true;
djbottrill 0:aac55e1fc12f 71 }
djbottrill 0:aac55e1fc12f 72
djbottrill 0:aac55e1fc12f 73
djbottrill 0:aac55e1fc12f 74 uint8_t * USBMIDI::stringIinterfaceDesc() {
djbottrill 0:aac55e1fc12f 75 static uint8_t stringIinterfaceDescriptor[] = {
djbottrill 0:aac55e1fc12f 76 0x0c, //bLength
djbottrill 0:aac55e1fc12f 77 STRING_DESCRIPTOR, //bDescriptorType 0x03
djbottrill 0:aac55e1fc12f 78 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio
djbottrill 0:aac55e1fc12f 79 };
djbottrill 0:aac55e1fc12f 80 return stringIinterfaceDescriptor;
djbottrill 0:aac55e1fc12f 81 }
djbottrill 0:aac55e1fc12f 82
djbottrill 0:aac55e1fc12f 83 uint8_t * USBMIDI::stringIproductDesc() {
djbottrill 0:aac55e1fc12f 84 static uint8_t stringIproductDescriptor[] = {
djbottrill 0:aac55e1fc12f 85 0x16, //bLength
djbottrill 0:aac55e1fc12f 86 STRING_DESCRIPTOR, //bDescriptorType 0x03
djbottrill 0:aac55e1fc12f 87 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio
djbottrill 0:aac55e1fc12f 88 };
djbottrill 0:aac55e1fc12f 89 return stringIproductDescriptor;
djbottrill 0:aac55e1fc12f 90 }
djbottrill 0:aac55e1fc12f 91
djbottrill 0:aac55e1fc12f 92
djbottrill 0:aac55e1fc12f 93 uint8_t * USBMIDI::configurationDesc() {
djbottrill 0:aac55e1fc12f 94 static uint8_t configDescriptor[] = {
djbottrill 0:aac55e1fc12f 95 // configuration descriptor
djbottrill 0:aac55e1fc12f 96 0x09, 0x02, 0x65, 0x00, 0x02, 0x01, 0x00, 0xc0, 0x50,
djbottrill 0:aac55e1fc12f 97
djbottrill 0:aac55e1fc12f 98 // The Audio Interface Collection
djbottrill 0:aac55e1fc12f 99 0x09, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, // Standard AC Interface Descriptor
djbottrill 0:aac55e1fc12f 100 0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x01, // Class-specific AC Interface Descriptor
djbottrill 0:aac55e1fc12f 101 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, // MIDIStreaming Interface Descriptors
djbottrill 0:aac55e1fc12f 102 0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00, // Class-Specific MS Interface Header Descriptor
djbottrill 0:aac55e1fc12f 103
djbottrill 0:aac55e1fc12f 104 // MIDI IN JACKS
djbottrill 0:aac55e1fc12f 105 0x06, 0x24, 0x02, 0x01, 0x01, 0x00,
djbottrill 0:aac55e1fc12f 106 0x06, 0x24, 0x02, 0x02, 0x02, 0x00,
djbottrill 0:aac55e1fc12f 107
djbottrill 0:aac55e1fc12f 108 // MIDI OUT JACKS
djbottrill 0:aac55e1fc12f 109 0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00,
djbottrill 0:aac55e1fc12f 110 0x09, 0x24, 0x03, 0x02, 0x06, 0x01, 0x01, 0x01, 0x00,
djbottrill 0:aac55e1fc12f 111
djbottrill 0:aac55e1fc12f 112 // OUT endpoint descriptor
djbottrill 0:aac55e1fc12f 113 0x09, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
djbottrill 0:aac55e1fc12f 114 0x05, 0x25, 0x01, 0x01, 0x01,
djbottrill 0:aac55e1fc12f 115
djbottrill 0:aac55e1fc12f 116 // IN endpoint descriptor
djbottrill 0:aac55e1fc12f 117 0x09, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
djbottrill 0:aac55e1fc12f 118 0x05, 0x25, 0x01, 0x01, 0x03,
djbottrill 0:aac55e1fc12f 119 };
djbottrill 0:aac55e1fc12f 120 return configDescriptor;
djbottrill 0:aac55e1fc12f 121 }