Chris Arndt / Mbed OS STM32F103_USBMIDI_Switchbox

Simple USB-MIDI foot controller

Dependencies:   PinDetect USBDevice_STM32F103 mbed-STM32F103C8T6

main.cpp@13:f9eb1f79cd0a, 2018-01-09 (annotated)

Committer:
SpotlightKid
Date:
Tue Jan 09 21:59:10 2018 +0100
Revision:
13:f9eb1f79cd0a
Parent:
12:d9ccbfd2cc8c 
Remove STM32F103C8T6 library and reduced stack sizes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
SpotlightKid 0:2f530d7169a6 1 #include "mbed.h"
SpotlightKid 3:8b8cb5392fa0 2 #include "mbed_events.h"
SpotlightKid 0:2f530d7169a6 3 #include "USBMIDI.h"
SpotlightKid 3:8b8cb5392fa0 4 #include "midiswitch.h"
SpotlightKid 0:2f530d7169a6 5
SpotlightKid 0:2f530d7169a6 6
SpotlightKid 3:8b8cb5392fa0 7 /* ******************** Configuration ***************************** */
SpotlightKid 3:8b8cb5392fa0 8
SpotlightKid 3:8b8cb5392fa0 9 #define NUM_SWITCHES 2
SpotlightKid 0:2f530d7169a6 10
SpotlightKid 3:8b8cb5392fa0 11 /* array of SwitchConfig structs */
SpotlightKid 3:8b8cb5392fa0 12 SwitchConfig switches[NUM_SWITCHES] = {
SpotlightKid 11:ff22140b5119 13 // pin, type, channel, data1, on_value, off_value
SpotlightKid 11:ff22140b5119 14 {PB_4, 0xB, 0, 1, 127, 0},
SpotlightKid 11:ff22140b5119 15 {PB_5, 0xC, 0, 0, 1, -1},
SpotlightKid 3:8b8cb5392fa0 16 };
SpotlightKid 3:8b8cb5392fa0 17
SpotlightKid 3:8b8cb5392fa0 18
SpotlightKid 3:8b8cb5392fa0 19 /* ******************** End Configuration ************************* */
SpotlightKid 0:2f530d7169a6 20
SpotlightKid 3:8b8cb5392fa0 21 #ifndef NDEBUG
SpotlightKid 3:8b8cb5392fa0 22 Serial *serial;
SpotlightKid 3:8b8cb5392fa0 23 #endif
SpotlightKid 7:553836a26221 24 USBMIDI * midi;
SpotlightKid 3:8b8cb5392fa0 25 /* array of pointers to SwitchHandler instances */
SpotlightKid 3:8b8cb5392fa0 26 SwitchHandler * handlers[NUM_SWITCHES];
SpotlightKid 3:8b8cb5392fa0 27
SpotlightKid 3:8b8cb5392fa0 28
SpotlightKid 3:8b8cb5392fa0 29 void write_midi_msg(MIDIMessage msg) {
SpotlightKid 6:2f804d29cbb0 30 #ifndef NDEBUG
SpotlightKid 6:2f804d29cbb0 31 serial->printf("Sending MIDI message controller=%d channel=%d value=%d\r\n",
SpotlightKid 6:2f804d29cbb0 32 msg.controller(), msg.channel(), msg.value());
SpotlightKid 6:2f804d29cbb0 33 #endif
SpotlightKid 3:8b8cb5392fa0 34 midi->write(msg);
SpotlightKid 3:8b8cb5392fa0 35 }
SpotlightKid 0:2f530d7169a6 36
SpotlightKid 9:d5fa853818dd 37 void handle_sysex(MIDIMessage msg) {
SpotlightKid 9:d5fa853818dd 38 uint8_t sw;
SpotlightKid 10:f9a48eedfd59 39 #ifndef NDEBUG
SpotlightKid 11:ff22140b5119 40 serial->printf("MIDI recv: header=0x%02X status=0x%02X data1=0x%02X data2=%02d length=%d\r\n",
SpotlightKid 11:ff22140b5119 41 msg.data[0], msg.data[1], msg.data[2], msg.data[3], msg.length);
SpotlightKid 10:f9a48eedfd59 42 #endif
SpotlightKid 9:d5fa853818dd 43
SpotlightKid 11:ff22140b5119 44 if (msg.data[1] == 0xF0 && msg.data[2] == 0x7D && msg.data[11] == 0xF7) {
SpotlightKid 9:d5fa853818dd 45 sw = msg.data[3];
SpotlightKid 9:d5fa853818dd 46 if (sw < NUM_SWITCHES) {
SpotlightKid 12:d9ccbfd2cc8c 47 switches[sw].type = msg.data[4] & 0xF;
SpotlightKid 12:d9ccbfd2cc8c 48 switches[sw].channel = msg.data[5] & 0xF;
SpotlightKid 12:d9ccbfd2cc8c 49 switches[sw].data1 = msg.data[6] & 0x7F;
SpotlightKid 11:ff22140b5119 50 if (msg.data[7] > 0)
SpotlightKid 12:d9ccbfd2cc8c 51 switches[sw].on_value = msg.data[8] & 0x7F;
SpotlightKid 11:ff22140b5119 52 else
SpotlightKid 11:ff22140b5119 53 switches[sw].on_value = -1;
SpotlightKid 11:ff22140b5119 54 if (msg.data[9] > 0)
SpotlightKid 12:d9ccbfd2cc8c 55 switches[sw].off_value = msg.data[10] & 0x7F;
SpotlightKid 11:ff22140b5119 56 else
SpotlightKid 11:ff22140b5119 57 switches[sw].off_value = -1;
SpotlightKid 9:d5fa853818dd 58 handlers[sw]->setConfig(switches[sw]);
SpotlightKid 9:d5fa853818dd 59 #ifndef NDEBUG
SpotlightKid 11:ff22140b5119 60 serial->printf("Changed configuration for switch %d.\r\n", sw + 1);
SpotlightKid 11:ff22140b5119 61 serial->printf("type: 0x%02X\r\n", switches[sw].type);
SpotlightKid 11:ff22140b5119 62 serial->printf("channel: %02d\r\n", switches[sw].channel);
SpotlightKid 11:ff22140b5119 63 serial->printf("data1: %02d\r\n", switches[sw].data1);
SpotlightKid 11:ff22140b5119 64 serial->printf("on_value: %02d\r\n", switches[sw].on_value);
SpotlightKid 11:ff22140b5119 65 serial->printf("off_value: %02d\r\n", switches[sw].off_value);
SpotlightKid 9:d5fa853818dd 66 #endif
SpotlightKid 9:d5fa853818dd 67 }
SpotlightKid 9:d5fa853818dd 68 }
SpotlightKid 9:d5fa853818dd 69 }
SpotlightKid 9:d5fa853818dd 70
SpotlightKid 0:2f530d7169a6 71 int main() {
SpotlightKid 3:8b8cb5392fa0 72 #ifndef NDEBUG
SpotlightKid 0:2f530d7169a6 73 serial = new Serial(PA_9, PA_10);
SpotlightKid 3:8b8cb5392fa0 74 serial->printf("Creating event queue...\r\n");
SpotlightKid 3:8b8cb5392fa0 75 #endif
SpotlightKid 5:1208f33a9a7c 76 EventQueue queue;
SpotlightKid 5:1208f33a9a7c 77
SpotlightKid 5:1208f33a9a7c 78 #ifndef NDEBUG
SpotlightKid 5:1208f33a9a7c 79 serial->printf("Creating USBMIDI device...\r\n");
SpotlightKid 5:1208f33a9a7c 80 #endif
SpotlightKid 5:1208f33a9a7c 81 midi = new USBMIDI(0x1f00, 0x2012, 0x0001);
SpotlightKid 3:8b8cb5392fa0 82
SpotlightKid 3:8b8cb5392fa0 83 #ifndef NDEBUG
SpotlightKid 3:8b8cb5392fa0 84 serial->printf("Initializing LED...\r\n");
SpotlightKid 3:8b8cb5392fa0 85 #endif
SpotlightKid 3:8b8cb5392fa0 86 DigitalOut led1(LED1);
SpotlightKid 3:8b8cb5392fa0 87 led1 = 1;
SpotlightKid 3:8b8cb5392fa0 88
SpotlightKid 3:8b8cb5392fa0 89 #ifndef NDEBUG
SpotlightKid 3:8b8cb5392fa0 90 serial->printf("Initializing event queue thread...\r\n");
SpotlightKid 3:8b8cb5392fa0 91 #endif
SpotlightKid 3:8b8cb5392fa0 92 // create a thread that'll run the event queue's dispatch function
SpotlightKid 5:1208f33a9a7c 93 Thread usbThread;
SpotlightKid 3:8b8cb5392fa0 94 #ifndef NDEBUG
SpotlightKid 3:8b8cb5392fa0 95 serial->printf("Starting event queue thread...\r\n");
SpotlightKid 3:8b8cb5392fa0 96 #endif
SpotlightKid 3:8b8cb5392fa0 97 usbThread.start(callback(&queue, &EventQueue::dispatch_forever));
SpotlightKid 3:8b8cb5392fa0 98
SpotlightKid 3:8b8cb5392fa0 99 for (int sw=0; sw < NUM_SWITCHES; sw++) {
SpotlightKid 3:8b8cb5392fa0 100 #ifndef NDEBUG
SpotlightKid 3:8b8cb5392fa0 101 serial->printf("Initializing switch handler %d...\r\n", sw + 1);
SpotlightKid 3:8b8cb5392fa0 102 #endif
SpotlightKid 8:75c5ec68765e 103 handlers[sw] = new SwitchHandler(&queue, &write_midi_msg, switches[sw]);
SpotlightKid 3:8b8cb5392fa0 104 }
SpotlightKid 3:8b8cb5392fa0 105
SpotlightKid 9:d5fa853818dd 106 midi->attach(&handle_sysex);
SpotlightKid 9:d5fa853818dd 107
SpotlightKid 3:8b8cb5392fa0 108 #ifndef NDEBUG
SpotlightKid 3:8b8cb5392fa0 109 serial->printf("Entering main loop...\r\n");
SpotlightKid 3:8b8cb5392fa0 110 #endif
SpotlightKid 0:2f530d7169a6 111 while (true) {
SpotlightKid 3:8b8cb5392fa0 112 wait(0.5f);
SpotlightKid 3:8b8cb5392fa0 113 led1 = !led1;
SpotlightKid 3:8b8cb5392fa0 114 }
SpotlightKid 0:2f530d7169a6 115 }