From f6ee107eb8024014b7792e0e4b97e16f05ce7d00 Mon Sep 17 00:00:00 2001
From: Marlon Schumacher <schumacher@hfm-karlsruhe.de>
Date: Fri, 14 Mar 2025 22:17:28 +0100
Subject: [PATCH] feat: add Testpatch in Max for Grove UR
---
render.cpp | 21 ++++++++++++++++-----
1 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/ultrasonic-bela/render.cpp b/render.cpp
similarity index 85%
rename from ultrasonic-bela/render.cpp
rename to render.cpp
index bda9e40..dc2dec2 100644
--- a/ultrasonic-bela/render.cpp
+++ b/render.cpp
@@ -14,8 +14,8 @@
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 [HC-SR04](https://cdn.sparkfun.com/datasheets/Sensors/Proximity/HCSR04.pdf).
+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
@@ -49,10 +49,12 @@
#include <stdlib.h>
#include <libraries/Scope/Scope.h>
#include <libraries/PulseIn/PulseIn.h>
+#include <libraries/OscSender/OscSender.h>
PulseIn pulseIn;
Scope scope;
-int gTriggerInterval = 2646; // how often to send out a trigger. 2646 samples are 60ms
+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
@@ -60,8 +62,15 @@
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
@@ -101,9 +110,11 @@
// rescaling according to the datasheet
distance = duration / gRescale;
}
+
static int count = 0;
- if(count > 5000){ // we do not want to print the value every time we read it
- rt_printf("pulseLength: %d, distance: %fcm\n", pulseLength, distance);
+ 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;
--
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