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#include <fcntl.h>
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#include <fcntl.h>
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#include <termios.h>
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#include <termios.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdio.h>
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#define DEVICE "/dev/midi1"
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#define BAUDRATE B115200
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#define TRIG_LEVEL 128
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#define SAMPLE_FREQ 1000
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#define SAMPLES_PER_PLOT 200
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#define SAMPLES_PER_PLOT 200
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struct termios oldtio,newtio;
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int main(int argc, char* argv[]) {
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int main(int argc, char* argv[]) {
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    int input;
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    int input;
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    FILE* gnuplot;
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    FILE* gnuplot;
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    int i;
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    int i;
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    float out_data;
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    float out_data;
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    unsigned char buf[SAMPLES_PER_PLOT];
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    unsigned char buf[SAMPLES_PER_PLOT];
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    unsigned char trig = 128;
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    unsigned char trig = TRIG_LEVEL;
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    unsigned freq = 1000;
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    unsigned freq = SAMPLE_FREQ;
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    input = open("/dev/midi1", O_RDONLY);
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    input = open(DEVICE, O_RDONLY | O_NOCTTY);
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    if (input <0) {perror(DEVICE); return -1; }
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    gnuplot = popen("gnuplot", "w");
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    gnuplot = popen("gnuplot", "w");
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    tcgetattr(input,&oldtio); /* save current port settings */
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    // bzero not defined? moving newtio outside main to zero it.
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    //bzero(&newtio, sizeof(newtio));
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    newtio.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
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    newtio.c_iflag = IGNPAR;
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    newtio.c_oflag = 0;
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    /* set input mode (non-canonical, no echo,...) */
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    newtio.c_lflag = 0;
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    newtio.c_cc[VTIME]    = 0;   /* inter-character timer unused */
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    newtio.c_cc[VMIN]     = SAMPLES_PER_PLOT;   /* blocking read until all samples received */
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    tcflush(input, TCIFLUSH);
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    tcsetattr(input,TCSANOW,&newtio);
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    fprintf(gnuplot, "set yrange [-0.1:5.1]\n");
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    fprintf(gnuplot, "set yrange [-0.1:5.1]\n");
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    while(1) {
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    while(1) {
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        // Wait for trig
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        // Wait for trig
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        do {
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        do {
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        }
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        }
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        fprintf(gnuplot, "e\n"); // Display output
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        fprintf(gnuplot, "e\n"); // Display output
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        fflush(gnuplot);
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        fflush(gnuplot);
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    }
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    }
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    tcsetattr(input,TCSANOW,&oldtio);
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    close(input);
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    close(input);
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    pclose(gnuplot);
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    pclose(gnuplot);
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    printf("\n");
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    printf("\n");
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    return 0;
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    return 0;
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}
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}