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enum datenklo_auto_mc {
DATENKLO_AUTO_MC_NONE = 0,
DATENKLO_AUTO_MC_BELL_ORIGINATE,
DATENKLO_AUTO_MC_BELL_ANSWER,
DATENKLO_AUTO_MC_BELL_4WIRE,
DATENKLO_AUTO_MC_CCITT_ORIGINATE,
DATENKLO_AUTO_MC_CCITT_ANSWER,
DATENKLO_AUTO_MC_CCITT_4WIRE,
};
typedef struct datenklo {
struct datenklo *slave;
/* settings */
uint8_t mc; /* modem chip mode */
int auto_rts; /* automatic RTS controling for half duplex */
double max_baud; /* limit to what the mode supports */
double force_tx_baud, force_rx_baud; /* override IOCTL */
int tx_back, rx_back; /* set if back channel is used for path */
int samplerate; /* audio sample rate */
int latspl; /* latenc */
int loopback; /* loopback mode */
/* states */
int flags; /* open() flags */
struct termios termios; /* current termios */
double baudrate; /* current baud rate */
int lines; /* state of lines (from IOCTL) */
int break_on; /* currently sending a break */
int break_bits; /* counts bits while sending a break signal */
int tcsetsw; /* send new termios after TX buffer is flused */
struct termios tcsetsw_termios; /* new termios after TX buffer is flused */
int ignbrk; /* IGNBRK option enabled */
int parmrk; /* PARMRK option enabled */
int istrip; /* ISTRIP option enabled */
int inlcr; /* INLCR option enabled */
int igncr; /* IGNCR option enabled */
int icrnl; /* ICRNL option enabled */
int iuclc; /* IUCLC option enabled */
int opost; /* OPOST option to enable all post options */
int onlcr; /* ONLCR option enabled */
int onlcr_char; /* CR transmitted, next up is NL */
int ocrnl; /* OCRNL option enabled */
int onlret; /* ONLRET option enabled */
int olcuc; /* OLCUC option enabled */
int echo; /* ECHO option enabled */
short revents; /* current set of poll reply events */
int open_count; /* to see if device is in use */
int auto_rts_on; /* Data available */
int auto_rts_rts; /* RTS was raised */
int auto_rts_cts; /* CTS was indicated */
int auto_rts_cd; /* CD was indicated */
int output_off; /* output stopped by flow control */
struct timer vtimer; /* VTIME timer */
int vtimeout; /* when timeout has fired */
/* data fifos */
uint8_t *tx_fifo;
int tx_fifo_in, tx_fifo_out;
int tx_fifo_size;
int tx_fifo_full; /* watermark to change POLLOUT flag */
uint8_t *rx_fifo;
int rx_fifo_in, rx_fifo_out;
int rx_fifo_size;
/* instances */
am791x_t am791x; /* da great modem IC */
uart_t uart; /* soft uart */
void *audio; /* sound interface */
void *device; /* CUSE device */
wave_rec_t wave_rx_rec; /* wave recording (from RX) */
wave_rec_t wave_tx_rec; /* wave recording (from TX) */
wave_play_t wave_rx_play; /* wave playback (as RX) */
wave_play_t wave_tx_play; /* wave playback (as TX) */
dispwav_t dispwav; /* wave display */
dispmeas_t dispmeas; /* measurements display */
double rx_level_abs; /* measure peak level of received audio */
int rx_level_count; /* samples measured so far */
int rx_level_max; /* number of samples per measurement */
dispmeasparam_t *dmp_rx_level; /* current rx level */
dispmeasparam_t *dmp_tone_level; /* level of tone */
dispmeasparam_t *dmp_tone_quality; /* quality of tone */
int last_bit; /* to check if we have valid quality */
} datenklo_t;
void datenklo_main(datenklo_t *datenklo, int loopback);
int datenklo_init(datenklo_t *datenklo, const char *dev_name, enum am791x_type am791x_type, uint8_t mc, int auto_rts, double force_tx_baud, double force_rx_baud, int samplerate, int loopback);
int datenklo_open_audio(datenklo_t *datenklo, const char *audiodev, int latency, const char *write_rx_wave, const char *write_tx_wave, const char *read_rx_wave, const char *read_tx_wave);
void datenklo_exit(datenklo_t *datenklo);
void datenklo_init_global(void);
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