YuuichiAkagawa
commented
7 years ago You must handle all instances.
#define LOAD_USB_HOST_SYSTEM
#define LOAD_USB_HOST_SHIELD
#define LOAD_UHS_HUB
#define LOAD_UHS_MIDI
#define LOAD_UHS_PRINTF_HELPER
#define USB_HOST_SERIAL Serial
#include <Arduino.h>
#ifdef true
#undef true
#endif
#ifdef false
#undef false
#endif
#include <UHS_host.h>
MAX3421E_HOST UsbHost;
UHS_MIDI Midi(&UsbHost);
UHS_MIDI Midi2(&UsbHost);
UHS_USBHub Hub1(&UsbHost);
UHS_USBHub Hub2(&UsbHost);
bool connected[2] = {false, false};
char buf[20];
void setup() {
// USB data switcher, PC -> device. (test jig, this can be ignored for regular use)
pinMode(5, OUTPUT);
digitalWrite(5, HIGH);
// connected = false;
USB_HOST_SERIAL.begin(115200);
while (UsbHost.Init(1000) != 0);
printf_P(PSTR("\r\nHost initialized.\r\n"));
}
void loop() {
if (Midi.isReady()) {
if (!connected[0]) {
connected[0] = true;
printf_P(PSTR("Connected to MIDI\r\n"));
sprintf(buf, "VID:%04X, PID:%04X", Midi.vid, Midi.pid);
Serial.println(buf);
}
MIDI_poll(Midi);
} else {
if (connected[0]) {
connected[0] = false;
printf_P(PSTR("\r\nDisconnected from MIDI\r\n"));
}
}
if (Midi2.isReady()) {
if (!connected[1]) {
connected[1] = true;
printf_P(PSTR("Connected to MIDI\r\n"));
sprintf(buf, "VID:%04X, PID:%04X", Midi.vid, Midi.pid);
Serial.println(buf);
}
MIDI_poll(Midi2);
} else {
if (connected[1]) {
connected[1] = false;
printf_P(PSTR("\r\nDisconnected from MIDI\r\n"));
}
}
}
// Poll USB MIDI Controler and send to serial MIDI
void MIDI_poll(UHS_MIDI &m)
{
uint8_t bufMidi[64];
uint16_t rcvd;
if (m.RecvData( &rcvd, bufMidi) == 0 ) {
sprintf(buf, "%08lX: ", (uint32_t)millis());
Serial.print(buf);
Serial.print(rcvd);
Serial.print(':');
for (int i = 0; i < 64; i++) {
sprintf(buf, " %02X", bufMidi[i]);
Serial.print(buf);
}
Serial.println("");
}
}I have not tried the Poll() feature.
ghost
xxxajk
PaulStoffregen
Again, sorry if this is a known issue, but I cannot find another issue discussing it.
I have modified the USB_MIDI_Dump demo to use two hubs and two midi devices. I find that a single device works well through a hub, but creating a second midi device stops it working. It compiles, but doesn't connect to or receive data from either MIDI device once more than one is declared.
Many thanks,
Here's the code: