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player_audiodsp_cmd Struct Reference [audiodsp] #include <player.h> List of all members. Detailed Description Command. The audiodsp interface accepts commands to produce fixed-frequency tones or binary phase shift keyed(BPSK) chirps through /dev/dsp (which is assumed to be associated with a sound card to which a speaker is attached). Public Attributes uint8_t  subtype uint16_t  frequency uint16_t  amplitude uint32_t  duration unsigned char  bitString [PLAYER_MAX_DEVICE_STRING_LEN] uint16_t  bitStringLen Member Data Documentation uint8_t player_audiodsp_cmd::subtype   The packet subtype. Set to PLAYER_AUDIODSP_PLAY_TONE to play a single frequency; bitString and bitStringLen do not need to be set. Set to PLAYER_AUDIODSP_PLAY_CHIRP to play a BPSKeyed chirp; bitString should contain the binary string to encode, and bitStringLen set to the length of the bitString. Set to PLAYER_AUDIODSP_REPLAY to replay the last sound. * uint16_t player_audiodsp_cmd::frequency   Frequency to play (Hz) uint16_t player_audiodsp_cmd::amplitude   Amplitude to play (dB?) uint32_t player_audiodsp_cmd::duration   Duration to play (msec) unsigned char player_audiodsp_cmd::bitString[PLAYER_MAX_DEVICE_STRING_LEN]   BitString to encode in sine wave uint16_t player_audiodsp_cmd::bitStringLen   Length of the bit string The documentation for this struct was generated from the following file: player.h