Friso van den Boom
/
HIDScope_friso
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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