Serial for tsunami

It does this by maintaining multiple file pointers and digitally mixing the tracks to Tsunami outputs. When operating in polyphonic mode, tracks can be started at any time, regardless of whatever tracks may be playing, including other copies of the same track depending on the settings. Currently, Tsunami provides 18 low-latency stereo voices or 32 low-latency mono voices. Polyphony also affects how you handle volume.

If you mix 4 tracks together that are all full-scale volume, the result will be clipped and distorted. You must reduce the volume of the. Tsunami has a number of options that can be set through the use of an Init file — a text file placed on the microSD card along with the. Tsunami Configurator is an application that allows you to set these options using a graphical user interface, and will then create the Init file for you.

An Init file is only required if you want to change a default behavior, and the only entries that are required are for options that are not default. Serial Baudrate: This sets the baudrate for the async serial port. This baudrate will remain in effect until the next power cycle. The default is Mode: This selects either mono or stereo mode and should be set to match the version of firmware you are using in Tsunami. It simply adjusts the number of outputs available, which are arranged as either 8 mono or 4 stereo.

The mono version also includes a trigger function to start a pair of tracks in adjacent outputs as a way of playing stereo content. Output N Volume: These sliders set the initial volume applied to the final mix of tracks mixed to the corresponding output.

These values can be overridden by a volume command. This gain affects the final output mix for that output, not the individual tracks that make up the mix.

Trigger options are set by first selecting the trigger number in the Trigger combo box. If there is no entry for that trigger, the options will reset to default. This allows you to easily test the effect of changing options without having to deal with writing the init file, transferring the microSD card and resetting Tsunami.

Not all trigger functions support all options. When combined with the non-inverted default option, a contact closure button or switch to ground will pull the trigger input low and activate the trigger. This allows the trigger to be driven with the digital output of another micro controller. The invert option will control whether the trigger will be activated on a low or high signal level.

With nothing connected, the trigger input is floating and will produce false and random triggers. Similarly, you should never apply 3. Type: This option affects only certain trigger functions. Function: This option selects the function that the trigger will perform. Some of the functions require that a range of tracks be specified, and the values in the range can be from 1 to The high value must be equal to or greater than the low value.

The track range is not used. The only rule imposed is that it will not play the same track twice in a row. These tracks will remain paused until they are resumed or restarted. Each activation of the trigger will increase or decrease the output stage volume of Tsunami by 1dB. Each Trigger Bank maps the normal function triggers to the next bank of 16 track numbers. Invert: This check box will invert the logic of the trigger.

The default is active low. Checking this option makes the trigger active high. Could not load tags. Latest commit. Git stats 25 commits. Failed to load latest commit information. View code. What is it? How is it structured? The Business Bit IV. Wrapping It Up V. The settings file. The Business Bit tsunamiSerial. Wrapping It Up For those that would rather program in something more speedy than python or just prefer another language, this wrapper class has been created to make the interface available in any language with command-line access.

A list of commands and their arguments are found below: Command Arguments Abbreviation Description help None -h displays usage and a list of commands info None -i prints board version and system info tracklist None -tl prints list of tracks as defined in settings.

It can then be resumed, starting the audio. The settings file The settings file is where the user can customize the library to their liking. If audio is playing, you will hear the result immediately. If audio is not playing, the new gain will be used the next time a track is started.

If audio is not playing, the new sample-rate offset will be used the next time a track is started. The track is routed to the specified stereo output. Loading muiltiple tracks and then un-pausing the all with resumeAllInSync function below allows for starting multiple tracks in sample sync. If track t is not playing, this function does nothing.

No other tracks are affected. Keep in mind that a paused track is still using one of the 8 voice slots. A voice allocated to playing a track becomes free only when that sound is stopped or the track reaches the end of the file and is not looping. If track number t is not paused, this function does nothing. This command does not actually start a track, only determines how it behaves once it is playing and reaches the end.

If the loop flag is set, that track will loop continuously until it's stopped, in which case it will stop immediately but the loop flag will remain set, or until the loop flag is cleared, in which case it will stop when it reaches the end of the track. This command may be used either before a track is started or while it's playing.

A value of 0 no gain plays the track at the nominal value in the wav file. This is the default gain for every track until changed. A value of is completely muted. If the track is playing, you will hear the result immediately.

If the track is not playing, the gain will be used the next time the track is started. Every track can have its own gain. Because the effect is immediate, large changes can produce ubrupt results.