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