Revision 0:79e3f3072f3b, committed 2014-09-08

Comitter:

tomlankhorst

Date:

Mon Sep 08 09:26:53 2014 +0000

Child:

1:e44574634162

Commit message:

Initial version (v0.1)

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HIDScope.cpp	Mon Sep 08 09:26:53 2014 +0000
@@ -0,0 +1,37 @@
+#include "HIDScope.h"
+
+HIDScope::HIDScope(int channels) : hid(64,64) 
+{
+    bufferData      = new float[channels]();
+    channelCount    = channels;
+    scopeData.length = 64;
+}
+
+void HIDScope::set(int ch, float val)
+{
+    bufferData[ch] = val;
+}
+
+void HIDScope::set(int ch, int val)
+{
+    set(ch,(float)val);
+}
+
+void HIDScope::set(int ch, bool val)
+{
+    set(ch,(val ? 1.0f : 0.0f));
+}
+
+void HIDScope::set(int ch, double val)
+{
+    set(ch,(float)val);
+}
+
+void HIDScope::send()
+{    
+    for(int ch=0; ch<channelCount; ch++)
+        memcpy(&scopeData.data[ch*4], &bufferData[ch], 4); // Copy a 4 byte float to the char array
+    
+    // Send non blocking, can be adjusted to blocking (hid.send)
+    hid.sendNB(&scopeData);
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HIDScope.h	Mon Sep 08 09:26:53 2014 +0000
@@ -0,0 +1,56 @@
+#ifndef _HIDSCOPE_H_
+#define _HIDSCOPE_H_
+
+#include "mbed.h"
+#include "USBHID.h"
+
+/**A simple HID (Human Interface Device) scope
+- Up to 6 channels of float data is transmitted in a single HID message (64 byte)
+- Theoretical maximum samplerate of 1kHz
+- Data can be parsed using a client-side server like NodeJS
+*/
+class HIDScope {
+    public: 
+        ///Instantiate the HID Scope
+        HIDScope(int channels);
+        
+        /** Sets the current channel value
+          @param ch : integer channel no (0-6)
+          @param val : float value
+          @return void
+        */
+        void set(int ch, float val);
+        
+        /** Sets the current channel value
+          @param ch : integer channel no (0-6)
+          @param val : integer value
+          @return void
+        */
+        void set(int ch, int val);
+        
+        /** Sets the current channel value
+          @param ch : integer channel no (0-6)
+          @param val : boolean value
+          @return void
+        */
+        void set(int ch, bool val);
+        
+        /** Sets the current channel value
+          @param ch : double channel no (0-6)
+          @param val : float value
+          @return void
+        */
+        void set(int ch, double val);
+        
+        /** Sends the channel data to the HID client
+          @return void
+        */
+        void send();
+    private:
+        USBHID hid;
+        HID_REPORT scopeData;
+        float* bufferData;
+        int channelCount;
+};
+
+#endif
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBDevice.lib	Mon Sep 08 09:26:53 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/USBDevice/#5bf05f9b3c7b