howard/howard.h

// booleans
#define TRUE    (-1)
#define FALSE   (0)
#define BADFD    (-1)

// buffer lengths
#define BUFLEN 8196
#define BUFLENSMALL 255

// Benestar sound meter
#define MIC_VID  "64bd"
#define MIC_PID  "74e3"

// mic constants
#define FLAG_DBCMODE  (0b00010000) // use dBc (not dBa)
#define FLAG_MAXMODE  (0b00100000) // get max db over interval
// fast = 125ms exp time avg
// slow = 1000ms exp time avg
#define FLAG_FASTMODE (0b01000000) 
// ranges supported by sonometer
#define FLAG_RANGE_30_130  (0b00000000)
#define FLAG_RANGE_30_80   (0b00000001)
#define FLAG_RANGE_50_100  (0b00000010)
#define FLAG_RANGE_60_110  (0b00000011)
#define FLAG_RANGE_80_130  (0b00000100)

// ANSI stuff
#define BOLD "\x1b[1m"
#define ITALIC "\x1b[3m"
#define STRIKE "\x1b[9m"
#define PLAIN "\x1b[0m"
#define UNDERLINE "\x1b[4m"
#define RED "\x1b[31m"
#define MAGENTA "\x1b[35m"
#define GREEN "\x1b[32m"
#define YELLOW "\x1b[33m"
#define BLUE "\x1b[34m"
#define CYAN "\x1b[36m"
#define GREY "\x1b[2;37m"

// Output modes
#define OM_SHORT  (1)  // Print to stdout in one line
#define OM_LONG   (2)  // Print to stdout over multiple lines
#define OM_DB     (4)  // Write to influxdb


// Control strings
#define CMD_CAPTURE    (0xb3)   // take a reading
#define CMD_CONFIGURE  (0x56)   // apply settings
#define RES_ACK      (0xc4)     // ack for command

// what to do
enum run_mode { 
    M_PROBE,   // measure noise level
    M_TEST,    // just check for sononeter then exit
    M_TESTDB   // just check influxdb access then exit
};

// return codes for  read_single_result()
enum read_status { 
    E_NOERROR=0,  // all good
    E_TIMEOUT=-1, // didn't receive all data in time
    E_BADREAD=-2  // received too much or too little data
};


typedef struct {
    int dirty;
    time_t unixtime;
    uint8_t flags;
    double decibels;
    int rangeidx;
    char range[BUFLENSMALL];
    char dbunits[BUFLENSMALL];
    char checkmode[BUFLENSMALL];
    char timenice[BUFLENSMALL];
} result_t;
enum influxcmdtype { I_READ, I_WRITE, I_PING };


// prototypes
int add_output_mode(char *m);
char *append(char *orig, char *new, int maxlen);
void cleanup(void);
void clear_results(result_t *data);
void colprintf( char *prefix, const char *col, char* format, va_list *args );
int configure_mic(void);
struct hostent *dnslookup(char *hname);
void err( char* format, ... );
double extract_decibels(uint8_t *buf);
void generate_commands(void);
char *getprocfspath(int vid, int pid, char *retvar);
void handle_signal(int signum);
int hextoint(char *hex);
int influx_cmd(enum influxcmdtype cmdtype, char *cmd, char *retbuf);
int influx_httppost(char *hname, int port, char *header, char *body, char *retbuf);
int influx_init(char *hname, char *db, char *user, char *pass);
int influx_insert(char *cmd, char *retbuf);
int influx_ping(char *retbuf);
int influx_query(char *cmd, char *retbuf);
int influx_write_decibels(double decibels);
void info( char* format, ... );
int init_influxdb(void);
int init_mic(void);
int mic_docmd(hid_device *dev, uint8_t *cmd, int cmdlen, uint8_t *buf);
int output_results(result_t *data);
int parse_results(uint8_t *buf, result_t *data);
void pr(char *col, char* format, ... );
enum read_status read_single_result(hid_device *dev, uint8_t *retbuf);
int resetusb(char *path);
int tcpconnect(char *hname, int port);
void usage(void);
int validateargs(void);
void vinfo( char* format, ... );
void warn( char* format, ... );