forgot to break out of loop when adding note

src/main.cpp

@@ -98,6 +98,7 @@ loopMIDI(alsa_sequencer* seq, spi_connection* spi, gpio_info* gpio)
 				if (PLAYING_NOTES[i] == 255) {
 					PLAYING_NOTES[i] = nev.note;
 					assert(gpioSetValue(gpio, 1)); // send set gate on
+					break;
 				}
 			}
 
@@ -105,6 +106,14 @@ loopMIDI(alsa_sequencer* seq, spi_connection* spi, gpio_info* gpio)
 			// TODO: could check return value here for SPI error
 			spiSendVoltage(spi, dac_in);
 		}
+
+		printf("PLAYING_NOTES: %d,%d,%d,%d,%d,%d\n",
+				PLAYING_NOTES[0],
+				PLAYING_NOTES[1],
+				PLAYING_NOTES[2],
+				PLAYING_NOTES[3],
+				PLAYING_NOTES[4],
+				PLAYING_NOTES[5]);
 	}
 }