Merge branch 'release/0.1.0'

Marlon Schumacher

10 days ago d16d0017c560aa980b65dd08089a9524309e49d1

Merge branch 'release/0.1.0'

 .DS_Store

Binary files differ

 .gitignore

@@ -19,3 +19,9 @@
*.exe
*.out
*.app

# Mac OS Finder
.DS_Store

# ignore build files
/build

 Grove-UR2 test.maxpat

New file
@@ -0,0 +1,770 @@
{
    "patcher" :     {
        "fileversion" : 1,
        "appversion" :         {
            "major" : 9,
            "minor" : 0,
            "revision" : 5,
            "architecture" : "x64",
            "modernui" : 1
        }
,
        "classnamespace" : "box",
        "rect" : [ 549.0, 247.0, 742.0, 657.0 ],
        "gridsize" : [ 15.0, 15.0 ],
        "boxes" : [             {
                "box" :                 {
                    "id" : "obj-27",
                    "lastchannelcount" : 0,
                    "maxclass" : "live.gain~",
                    "numinlets" : 2,
                    "numoutlets" : 5,
                    "outlettype" : [ "signal", "signal", "", "float", "list" ],
                    "parameter_enable" : 1,
                    "patching_rect" : [ 141.0, 427.0, 56.0, 138.0 ],
                    "saved_attribute_attributes" :                     {
                        "valueof" :                         {
                            "parameter_longname" : "live.gain~",
                            "parameter_mmax" : 6.0,
                            "parameter_mmin" : -70.0,
                            "parameter_modmode" : 3,
                            "parameter_shortname" : "live.gain~",
                            "parameter_type" : 0,
                            "parameter_unitstyle" : 4
                        }

                    }
,
                    "varname" : "live.gain~"
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-25",
                    "maxclass" : "toggle",
                    "numinlets" : 1,
                    "numoutlets" : 1,
                    "outlettype" : [ "int" ],
                    "parameter_enable" : 0,
                    "patching_rect" : [ 89.5, 55.0, 24.0, 24.0 ]
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-2",
                    "maxclass" : "newobj",
                    "numinlets" : 2,
                    "numoutlets" : 1,
                    "outlettype" : [ "" ],
                    "patching_rect" : [ 89.5, 102.0, 52.0, 22.0 ],
                    "text" : "gate 1 0"
                }

            }
,             {
                "box" :                 {
                    "format" : 6,
                    "id" : "obj-44",
                    "maxclass" : "flonum",
                    "numinlets" : 1,
                    "numoutlets" : 2,
                    "outlettype" : [ "", "bang" ],
                    "parameter_enable" : 0,
                    "patching_rect" : [ 445.0, 41.0, 50.0, 22.0 ]
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-39",
                    "maxclass" : "message",
                    "numinlets" : 2,
                    "numoutlets" : 1,
                    "outlettype" : [ "" ],
                    "patching_rect" : [ 445.0, 71.0, 73.0, 22.0 ],
                    "text" : "/distance $1"
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-1",
                    "maxclass" : "newobj",
                    "numinlets" : 1,
                    "numoutlets" : 0,
                    "patching_rect" : [ 445.0, 102.0, 135.0, 22.0 ],
                    "text" : "udpsend localhost 7474"
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-38",
                    "maxclass" : "number",
                    "numinlets" : 1,
                    "numoutlets" : 2,
                    "outlettype" : [ "", "bang" ],
                    "parameter_enable" : 0,
                    "patching_rect" : [ 196.0, 262.0, 50.0, 22.0 ]
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-36",
                    "maxclass" : "newobj",
                    "numinlets" : 1,
                    "numoutlets" : 1,
                    "outlettype" : [ "" ],
                    "patching_rect" : [ 187.0, 153.0, 77.0, 22.0 ],
                    "text" : "loadmess 50"
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-35",
                    "maxclass" : "number",
                    "numinlets" : 1,
                    "numoutlets" : 2,
                    "outlettype" : [ "", "bang" ],
                    "parameter_enable" : 0,
                    "patching_rect" : [ 187.0, 185.0, 50.0, 22.0 ]
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-33",
                    "maxclass" : "newobj",
                    "numinlets" : 2,
                    "numoutlets" : 1,
                    "outlettype" : [ "" ],
                    "patcher" :                     {
                        "fileversion" : 1,
                        "appversion" :                         {
                            "major" : 9,
                            "minor" : 0,
                            "revision" : 5,
                            "architecture" : "x64",
                            "modernui" : 1
                        }
,
                        "classnamespace" : "box",
                        "rect" : [ 59.0, 119.0, 640.0, 480.0 ],
                        "gridsize" : [ 15.0, 15.0 ],
                        "boxes" : [                             {
                                "box" :                                 {
                                    "fontname" : "Arial",
                                    "fontsize" : 12.0,
                                    "id" : "obj-35",
                                    "maxclass" : "newobj",
                                    "numinlets" : 2,
                                    "numoutlets" : 2,
                                    "outlettype" : [ "", "" ],
                                    "patching_rect" : [ 35.0, 71.0, 74.0, 22.0 ],
                                    "text" : "zl stream 20"
                                }

                            }
,                             {
                                "box" :                                 {
                                    "fontname" : "Arial",
                                    "fontsize" : 12.0,
                                    "id" : "obj-33",
                                    "maxclass" : "newobj",
                                    "numinlets" : 2,
                                    "numoutlets" : 2,
                                    "outlettype" : [ "", "" ],
                                    "patching_rect" : [ 35.0, 94.0, 62.0, 22.0 ],
                                    "text" : "zl median"
                                }

                            }
,                             {
                                "box" :                                 {
                                    "comment" : "",
                                    "id" : "obj-7",
                                    "index" : 2,
                                    "maxclass" : "inlet",
                                    "numinlets" : 0,
                                    "numoutlets" : 1,
                                    "outlettype" : [ "" ],
                                    "patching_rect" : [ 110.0, 26.0, 25.0, 25.0 ],
                                    "varname" : "inlet[1]"
                                }

                            }
,                             {
                                "box" :                                 {
                                    "comment" : "",
                                    "id" : "obj-11",
                                    "index" : 1,
                                    "maxclass" : "outlet",
                                    "numinlets" : 1,
                                    "numoutlets" : 0,
                                    "patching_rect" : [ 35.0, 191.0, 25.0, 25.0 ]
                                }

                            }
,                             {
                                "box" :                                 {
                                    "comment" : "",
                                    "id" : "obj-12",
                                    "index" : 1,
                                    "maxclass" : "inlet",
                                    "numinlets" : 0,
                                    "numoutlets" : 1,
                                    "outlettype" : [ "" ],
                                    "patching_rect" : [ 35.0, 26.0, 25.0, 25.0 ],
                                    "varname" : "inlet"
                                }

                            }
 ],
                        "lines" : [                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-35", 0 ],
                                    "source" : [ "obj-12", 0 ]
                                }

                            }
,                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-11", 0 ],
                                    "source" : [ "obj-33", 0 ]
                                }

                            }
,                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-33", 0 ],
                                    "source" : [ "obj-35", 0 ]
                                }

                            }
,                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-35", 1 ],
                                    "source" : [ "obj-7", 0 ]
                                }

                            }
 ],
                        "originid" : "pat-158"
                    }
,
                    "patching_rect" : [ 141.0, 217.0, 65.0, 22.0 ],
                    "text" : "p median2"
                }

            }
,             {
                "box" :                 {
                    "format" : 6,
                    "id" : "obj-32",
                    "maxclass" : "flonum",
                    "numinlets" : 1,
                    "numoutlets" : 2,
                    "outlettype" : [ "", "bang" ],
                    "parameter_enable" : 0,
                    "patching_rect" : [ 274.0, 352.0, 50.0, 22.0 ]
                }

            }
,             {
                "box" :                 {
                    "contdata" : 1,
                    "id" : "obj-30",
                    "maxclass" : "multislider",
                    "numinlets" : 1,
                    "numoutlets" : 2,
                    "outlettype" : [ "", "" ],
                    "parameter_enable" : 0,
                    "patching_rect" : [ 246.0, 430.0, 159.0, 132.0 ],
                    "setminmax" : [ 0.0, 10.0 ],
                    "setstyle" : 2
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-29",
                    "maxclass" : "newobj",
                    "numinlets" : 1,
                    "numoutlets" : 1,
                    "outlettype" : [ "float" ],
                    "patcher" :                     {
                        "fileversion" : 1,
                        "appversion" :                         {
                            "major" : 9,
                            "minor" : 0,
                            "revision" : 5,
                            "architecture" : "x64",
                            "modernui" : 1
                        }
,
                        "classnamespace" : "box",
                        "rect" : [ 59.0, 119.0, 640.0, 480.0 ],
                        "gridsize" : [ 15.0, 15.0 ],
                        "boxes" : [                             {
                                "box" :                                 {
                                    "fontname" : "Arial",
                                    "fontsize" : 11.595186999999999,
                                    "id" : "obj-31",
                                    "maxclass" : "newobj",
                                    "numinlets" : 2,
                                    "numoutlets" : 1,
                                    "outlettype" : [ "float" ],
                                    "patching_rect" : [ 195.75, 313.0, 32.5, 21.0 ],
                                    "text" : "- 0."
                                }

                            }
,                             {
                                "box" :                                 {
                                    "fontname" : "Arial",
                                    "fontsize" : 11.595186999999999,
                                    "id" : "obj-32",
                                    "maxclass" : "newobj",
                                    "numinlets" : 1,
                                    "numoutlets" : 1,
                                    "outlettype" : [ "bang" ],
                                    "patching_rect" : [ 184.0, 208.0, 27.0, 21.0 ],
                                    "text" : "b 1"
                                }

                            }
,                             {
                                "box" :                                 {
                                    "fontname" : "Arial",
                                    "fontsize" : 11.595186999999999,
                                    "id" : "obj-33",
                                    "maxclass" : "newobj",
                                    "numinlets" : 1,
                                    "numoutlets" : 1,
                                    "outlettype" : [ "float" ],
                                    "patching_rect" : [ 184.0, 234.0, 56.0, 21.0 ],
                                    "text" : "cpuclock"
                                }

                            }
,                             {
                                "box" :                                 {
                                    "fontname" : "Arial",
                                    "fontsize" : 12.0,
                                    "id" : "obj-29",
                                    "maxclass" : "newobj",
                                    "numinlets" : 1,
                                    "numoutlets" : 2,
                                    "outlettype" : [ "float", "float" ],
                                    "patching_rect" : [ 184.0, 261.0, 32.5, 22.0 ],
                                    "text" : "t f f"
                                }

                            }
,                             {
                                "box" :                                 {
                                    "comment" : "",
                                    "id" : "obj-7",
                                    "index" : 1,
                                    "maxclass" : "outlet",
                                    "numinlets" : 1,
                                    "numoutlets" : 0,
                                    "patching_rect" : [ 195.75, 353.0, 25.0, 25.0 ]
                                }

                            }
,                             {
                                "box" :                                 {
                                    "comment" : "",
                                    "id" : "obj-1",
                                    "index" : 1,
                                    "maxclass" : "inlet",
                                    "numinlets" : 0,
                                    "numoutlets" : 1,
                                    "outlettype" : [ "" ],
                                    "patching_rect" : [ 184.0, 164.0, 25.0, 25.0 ]
                                }

                            }
 ],
                        "lines" : [                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-32", 0 ],
                                    "source" : [ "obj-1", 0 ]
                                }

                            }
,                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-31", 0 ],
                                    "source" : [ "obj-29", 1 ]
                                }

                            }
,                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-31", 1 ],
                                    "source" : [ "obj-29", 0 ]
                                }

                            }
,                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-7", 0 ],
                                    "source" : [ "obj-31", 0 ]
                                }

                            }
,                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-33", 0 ],
                                    "source" : [ "obj-32", 0 ]
                                }

                            }
,                             {
                                "patchline" :                                 {
                                    "destination" : [ "obj-29", 0 ],
                                    "source" : [ "obj-33", 0 ]
                                }

                            }
 ],
                        "originid" : "pat-160"
                    }
,
                    "patching_rect" : [ 246.0, 296.0, 65.0, 22.0 ],
                    "text" : "p cputimer"
                }

            }
,             {
                "box" :                 {
                    "contdata" : 1,
                    "id" : "obj-28",
                    "maxclass" : "multislider",
                    "numinlets" : 1,
                    "numoutlets" : 2,
                    "outlettype" : [ "", "" ],
                    "parameter_enable" : 0,
                    "patching_rect" : [ 445.0, 153.0, 159.0, 132.0 ],
                    "setminmax" : [ 0.0, 300.0 ],
                    "setstyle" : 2
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-14",
                    "maxclass" : "newobj",
                    "numinlets" : 2,
                    "numoutlets" : 1,
                    "outlettype" : [ "signal" ],
                    "patching_rect" : [ 141.0, 358.0, 40.0, 22.0 ],
                    "text" : "*~ 10."
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-13",
                    "maxclass" : "ezdac~",
                    "numinlets" : 2,
                    "numoutlets" : 0,
                    "patching_rect" : [ 141.0, 585.0, 45.0, 45.0 ]
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-12",
                    "maxclass" : "newobj",
                    "numinlets" : 2,
                    "numoutlets" : 1,
                    "outlettype" : [ "signal" ],
                    "patching_rect" : [ 141.0, 393.0, 43.0, 22.0 ],
                    "text" : "cycle~"
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-11",
                    "maxclass" : "newobj",
                    "numinlets" : 3,
                    "numoutlets" : 1,
                    "outlettype" : [ "signal" ],
                    "patching_rect" : [ 141.0, 296.0, 74.0, 22.0 ],
                    "text" : "slide~ 10 10"
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-9",
                    "maxclass" : "newobj",
                    "numinlets" : 1,
                    "numoutlets" : 1,
                    "outlettype" : [ "signal" ],
                    "patching_rect" : [ 141.0, 262.0, 31.0, 22.0 ],
                    "text" : "sig~"
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-6",
                    "maxclass" : "newobj",
                    "numinlets" : 2,
                    "numoutlets" : 2,
                    "outlettype" : [ "", "" ],
                    "patching_rect" : [ 246.0, 97.0, 87.0, 22.0 ],
                    "text" : "route /distance"
                }

            }
,             {
                "box" :                 {
                    "contdata" : 1,
                    "id" : "obj-5",
                    "maxclass" : "multislider",
                    "numinlets" : 1,
                    "numoutlets" : 2,
                    "outlettype" : [ "", "" ],
                    "parameter_enable" : 0,
                    "patching_rect" : [ 445.0, 303.0, 159.0, 132.0 ],
                    "setminmax" : [ 0.0, 300.0 ],
                    "setstyle" : 2
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-4",
                    "maxclass" : "newobj",
                    "numinlets" : 1,
                    "numoutlets" : 0,
                    "patching_rect" : [ 89.5, 144.0, 32.0, 22.0 ],
                    "text" : "print"
                }

            }
,             {
                "box" :                 {
                    "id" : "obj-3",
                    "maxclass" : "newobj",
                    "numinlets" : 1,
                    "numoutlets" : 1,
                    "outlettype" : [ "" ],
                    "patching_rect" : [ 246.0, 56.0, 97.0, 22.0 ],
                    "text" : "udpreceive 7474"
                }

            }
 ],
        "lines" : [             {
                "patchline" :                 {
                    "destination" : [ "obj-14", 0 ],
                    "source" : [ "obj-11", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-27", 1 ],
                    "order" : 0,
                    "source" : [ "obj-12", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-27", 0 ],
                    "order" : 1,
                    "source" : [ "obj-12", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-12", 0 ],
                    "source" : [ "obj-14", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-4", 0 ],
                    "source" : [ "obj-2", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-2", 0 ],
                    "source" : [ "obj-25", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-13", 1 ],
                    "source" : [ "obj-27", 1 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-13", 0 ],
                    "source" : [ "obj-27", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-30", 0 ],
                    "order" : 1,
                    "source" : [ "obj-29", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-32", 0 ],
                    "order" : 0,
                    "source" : [ "obj-29", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-2", 1 ],
                    "order" : 1,
                    "source" : [ "obj-3", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-6", 0 ],
                    "order" : 0,
                    "source" : [ "obj-3", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-5", 0 ],
                    "order" : 0,
                    "source" : [ "obj-33", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-9", 0 ],
                    "order" : 1,
                    "source" : [ "obj-33", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-33", 1 ],
                    "source" : [ "obj-35", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-35", 0 ],
                    "source" : [ "obj-36", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-11", 2 ],
                    "order" : 0,
                    "source" : [ "obj-38", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-11", 1 ],
                    "order" : 1,
                    "source" : [ "obj-38", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-1", 0 ],
                    "source" : [ "obj-39", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-39", 0 ],
                    "source" : [ "obj-44", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-28", 0 ],
                    "order" : 0,
                    "source" : [ "obj-6", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-29", 0 ],
                    "order" : 1,
                    "source" : [ "obj-6", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-33", 0 ],
                    "order" : 2,
                    "source" : [ "obj-6", 0 ]
                }

            }
,             {
                "patchline" :                 {
                    "destination" : [ "obj-11", 0 ],
                    "source" : [ "obj-9", 0 ]
                }

            }
 ],
        "originid" : "pat-156",
        "parameters" :         {
            "obj-27" : [ "live.gain~", "live.gain~", 0 ],
            "parameterbanks" :             {
                "0" :                 {
                    "index" : 0,
                    "name" : "",
                    "parameters" : [ "-", "-", "-", "-", "-", "-", "-", "-" ]
                }

            }
,
            "inherited_shortname" : 1
        }
,
        "dependency_cache" : [  ],
        "autosave" : 0
    }

}

 render.cpp

New file
@@ -0,0 +1,128 @@
/*
 ____  _____ _        _
| __ )| ____| |      / \
|  _ \|  _| | |     / _ \
| |_) | |___| |___ / ___ \
|____/|_____|_____/_/   \_\
http://bela.io
*/
/**
\example Sensors/ultrasonic-distance-sensor/render.cpp

Measuring distances with ultrasonic sensors
---------------------------

Ultrasonic sensors can detect distances to a high degree of accuracy, even
in many conditions where infrared sensors would not be suitable (e.g.: when natural
light is a problem. For this example we used the [Grove Ultrasonic Ranger]
(https://wiki.seeedstudio.com/Grove-Ultrasonic_Ranger/).

After it receives a short pulse (> 10us) at its TRIGGER input, the module outputs from the
ECHO output a pulse whose length is proportional to the distance of the object that is in
front of the sensor. When a trigger is received the module emits an ultrasonic wave
from its emitter and then receives the signal back in its receiver, measuring the time
difference between the two.

According to the datasheet of this sensor, the following relation stands:
    time[us] / 58 = distance[cm]
The dataseheet recommends a minimum interval of 60ms between triggers, in order to be able to
read the result appropriately.

Bela sends out the TRIGGER event every 2646 samples(60ms) and then waits for a pulse to come
appear on the ECHO pin. The `PulseIn` class is used here to monitor a digital pin for an HIGH
pulse and once the pulse termiantes, it returnes the duration ( in samples ) of the pulse.

The module requires a 5V power supply and its digital inputs and outputs are low at 0V and
HIGH at 5V. Check the pin diagram in the IDE to see where to find the pins you need.
It is important that the 5V ECHO output from the module *is not* connected
straight to Bela's digital inputs, as that would most likely kill the Bela board
(digital I/Os are 3.3V tolerant). You will need to use a passive resistor divider from the
HC-SR04's ECHO output to scale down the voltage before connecting it to the digital input
on `gEchoDigitalInPin`.

On the scope you should see the pulses coming in from the trigger and the distance. The closer
the object, the shorter the pulses. Make sure you set the trigger to "channel 1" (the pulse) and
you set the horizontal zoom appropriately.
*/

#include <Bela.h>
#include <stdlib.h>
#include <libraries/Scope/Scope.h>
#include <libraries/PulseIn/PulseIn.h>
#include <libraries/OscSender/OscSender.h>

PulseIn pulseIn;
Scope scope;
int sensorFreq = 10; // freq in Hz for polling value and sending OSC messages
int gTriggerInterval = 44100 / sensorFreq; // how often to send out a trigger. 2646 samples are 60ms
int gMinPulseLength = 7; //to avoid spurious readings
float gRescale = 58; // taken from the datasheet
unsigned int gTrigDigitalOutPin = 7; //channel to be connected to the module's TRIGGER pin - check the pin diagram in the IDE
unsigned int gEchoDigitalInPin = 7; //channel to be connected to the modules's ECHO pin via resistor divider. Check the pin diagram in the IDE
int gTriggerCount = 0;
int gPrintfCount = 0;

OscSender oscSender;
int localPort = 7562;
const char* remoteIp = "127.0.0.1";
int remotePort = 57120;

bool setup(BelaContext *context, void *userData)
{
    // osc sender setup
    oscSender.setup(remotePort, remoteIp);
    // Set the mode of digital pins
    // pinMode(context, 0, gTrigDigitalOutPin, OUTPUT); // writing to TRIGGER pin
    // pinMode(context, 0, gEchoDigitalInPin, INPUT); // reading from ECHO pin
    pulseIn.setup(context, gEchoDigitalInPin, HIGH); //detect HIGH pulses on the ECHO pin
    scope.setup(2, context->digitalSampleRate);
    return true;
}

void render(BelaContext *context, void *userData)
{
    for(unsigned int n = 0; n < context->digitalFrames; ++n){
        gTriggerCount++;
        bool state;
        if(gTriggerCount == gTriggerInterval){
            pinMode(context, 0, gTrigDigitalOutPin, OUTPUT); // writing to TRIGGER pin
            state = LOW;
            digitalWriteOnce(context, n, gTrigDigitalOutPin, state);
        } else if (gTriggerCount == gTriggerInterval+1) {
            pinMode(context, 0, gTrigDigitalOutPin, OUTPUT); // writing to TRIGGER pin
            state = HIGH;
            digitalWriteOnce(context, n, gTrigDigitalOutPin, state);
        } else if (gTriggerCount == gTriggerInterval+2) {
            gTriggerCount = 0;
            state = LOW;
            digitalWriteOnce(context, n, gTrigDigitalOutPin, state);
        } else {
            pinMode(context, 0, gTrigDigitalOutPin, INPUT); // writing to TRIGGER pin
        }

        auto dRead = digitalRead(context, n, gEchoDigitalInPin);
        int pulseLength = pulseIn.hasPulsed(context, n); // will return the pulse duration(in samples) if a pulse just ended

        float duration = 1e6 * pulseLength / context->digitalSampleRate; // pulse duration in microseconds

        static float distance = 0;
        if(pulseLength >= gMinPulseLength){
            // rescaling according to the datasheet
            distance = duration / gRescale;
        }

        static int count = 0;
        if(count > gTriggerInterval){ // we do not want to print the value every time we read it
            //rt_printf("pulseLength: %d, distance: %fcm\n", pulseLength, distance);
            oscSender.newMessage("/distance").add(distance).send();
            count = 0;
        }
        ++count;
        // Logging to the scope the pulse inputs (gEchoDigitalInPin) and the distance
        scope.log(dRead * 0.5, distance/100);
    }
}

void cleanup(BelaContext *context, void *userData)
{
}

 settings.json

New file
@@ -0,0 +1,34 @@
{
  "fileName": "render.cpp",
  "CLArgs": {
    "-p": "16",
    "-C": "8",
    "-B": "16",
    "-N": "1",
    "-G": "1",
    "-M": "0",
    "-H0,": "-6",
    "-H1,": "-6",
    "-H2,": "-6",
    "-H3,": "-6",
    "-H4,": "-6",
    "-H5,": "-6",
    "-H6,": "-6",
    "-H7,": "-6",
    "-I0,": "10",
    "-I1,": "10",
    "-I2,": "10",
    "-I3,": "10",
    "-I4,": "10",
    "-I5,": "10",
    "-I6,": "10",
    "-I7,": "10",
    "user": "",
    "make": "",
    "-X": "0",
    "audioExpander": "0",
    "-Y": "",
    "-Z": "",
    "--disable-led": "0"
  }
}