tedor

I am receiving a string with osc (udpreceive) in Max/Msp. 

How could I separate the string and how is it possible to get a float from the hex characters?

I am receiving a string with osc (udpreceive) in Max/Msp. 
The string is made of hexadecimal data. 

Help appreciated!
All the best, 
Krisztian

osc-to-maxmsp-form-quartz-composer-hex-to-float

Could you send us more details, a sample from this string?

your .jpg is very fuzzy , I can't read anything

I am curious beacause usualy OSC is made of plain text.

hi 
Could you send us more details, a sample from this string?

I guess it is going to be difficult for you to see the same data, as you would need the EEG DEVICE, but his might helps.

I could sort out to get integers from hex data, was not very difficult at all:)

There are two more pictures which might help:

http://www.tedor2.extra.hu/uploads/osc1.jpg

http://www.tedor2.extra.hu/uploads/osc2.jpg

This is the patcher I am using in Max/Msp:

(You might see the remaining data in the message box.)

        "rect" : [ 1280.0, 110.0, 1024.0, 720.0 ],

        "defrect" : [ 1280.0, 110.0, 1024.0, 720.0 ],

        "openrect" : [ 0.0, 0.0, 0.0, 0.0 ],

        "openinpresentation" : 0,

        "default_fontsize" : 12.0,

        "default_fontname" : "Arial",

        "gridsize" : [ 15.0, 15.0 ],

        "boxes" : [             {

                "box" :                 {

                    "maxclass" : "newobj",

                    "text" : "sprintf %s%s",

                    "outlettype" : [ "" ],

                    "id" : "obj-32",

                    "fontsize" : 11.595187,

                    "patching_rect" : [ 303.0, 188.0, 78.0, 20.0 ],

                    "numinlets" : 2,

                    "numoutlets" : 1,

                    "fontname" : "Arial"

                    "maxclass" : "message",

                    "text" : "X12e 156 2 2 2e5 2f6 3 2 1f8 1f7 2 2 3 1 2 2",

                    "id" : "obj-48",

                    "fontsize" : 9.0,

                    "patching_rect" : [ 308.0, 223.0, 518.5, 15.0 ],

                    "text" : "print bang",

                    "id" : "obj-10",

                    "patching_rect" : [ 14.0, 289.0, 53.0, 17.0 ],

                    "numinlets" : 1,

                    "numoutlets" : 0,

                    "text" : "OpenSoundControl",

                    "outlettype" : [ "", "", "" ],

                    "id" : "obj-1",

                    "patching_rect" : [ 14.0, 260.0, 88.0, 17.0 ],

                    "numinlets" : 0,

                    "numoutlets" : 3,

                    "text" : "print messages",

                    "id" : "obj-2",

                    "patching_rect" : [ 49.0, 308.0, 75.0, 17.0 ],

                    "text" : "print time-tag",

                    "id" : "obj-3",

                    "patching_rect" : [ 83.0, 289.0, 72.0, 17.0 ],

                    "text" : "p cnmat_compatibility",

                    "id" : "obj-5",

                    "patching_rect" : [ 188.0, 37.0, 109.0, 17.0 ],

                    "fontname" : "Arial",

                    "patcher" :                     {

                        "fileversion" : 1,

                        "rect" : [ 1582.0, 205.0, 385.0, 293.0 ],

                        "bglocked" : 0,

                        "defrect" : [ 1582.0, 205.0, 385.0, 293.0 ],

                        "openrect" : [ 0.0, 0.0, 0.0, 0.0 ],

                        "openinpresentation" : 0,

                        "default_fontsize" : 12.0,

                        "default_fontface" : 0,

                        "default_fontname" : "Arial",

                        "gridonopen" : 0,

                        "gridsize" : [ 15.0, 15.0 ],

                        "gridsnaponopen" : 0,

                        "toolbarvisible" : 1,

                        "boxanimatetime" : 200,

                        "imprint" : 0,

                        "metadata" : [ ],

                        "boxes" : [                             {

                                "box" :                                 {

                                    "maxclass" : "newobj",

                                    "text" : "udpreceive 7374 CNMAT",

                                    "outlettype" : [ "" ],

                                    "id" : "obj-1",

                                    "fontsize" : 9.0,

                                    "patching_rect" : [ 43.0, 142.0, 121.0, 17.0 ],

                                    "numinlets" : 1,

                                    "numoutlets" : 1,

                                    "fontname" : "Arial"

                                }

,                             {

                                    "maxclass" : "comment",

                                    "text" : "Both udpsend and udpreceive support the 'FullPacket' message used by the CNMAT OpenSoundControl external. This means they can be used as drop in replacements for the [otudp] object.",

                                    "linecount" : 3,

                                    "id" : "obj-2",

                                    "patching_rect" : [ 21.0, 27.0, 299.0, 38.0 ],

                                    "numoutlets" : 0,

                                    "text" : "Although udpsend and udpreceive use OSC as their transport protocol, the OpenSoundControl object by CNMAT has more robust support for OpenSoundControl as a protocol including bundling of multiple OSC messages, string substitution, time stamping etc. udpsend and udpreceive support a simple subset of OSC.",

                                    "linecount" : 5,

                                    "id" : "obj-3",

                                    "patching_rect" : [ 20.0, 173.0, 296.0, 58.0 ],

                                    "text" : "udpsend will respond to the 'FullPacket' message as expected. However, for udpreceive to know that it should pass on udp buffers as 'FullPacket' messages instead of decoding them itself you need to instantiate it with an optional third argument.",

                                    "linecount" : 4,

                                    "id" : "obj-4",

                                    "patching_rect" : [ 22.0, 70.0, 261.0, 48.0 ],

                        "lines" : [ ]

                    }

                    "saved_object_attributes" :                     {

                        "fontface" : 0,

                        "fontsize" : 12.0,

                        "globalpatchername" : "",

                        "fontname" : "Arial"

                    "text" : "maxqueuesize 512",

                    "id" : "obj-6",

                    "patching_rect" : [ 9.0, 73.0, 86.0, 15.0 ],

                    "text" : "print receivedmess",

                    "id" : "obj-12",

                    "patching_rect" : [ 81.0, 227.0, 95.0, 17.0 ],

                    "maxclass" : "comment",

                    "text" : "set local port to listen for messages on",

                    "linecount" : 2,

                    "id" : "obj-13",

                    "patching_rect" : [ 188.0, 96.0, 131.0, 27.0 ],

                    "text" : "port 7005",

                    "id" : "obj-14",

                    "patching_rect" : [ 128.0, 114.0, 56.0, 15.0 ],

                    "text" : "port 7401",

                    "id" : "obj-15",

                    "patching_rect" : [ 120.0, 94.0, 55.0, 15.0 ],

                    "text" : "udpreceive 7005",

                    "id" : "obj-24",

                    "patching_rect" : [ 83.0, 143.0, 86.0, 17.0 ],

                    "text" : "udpsend & udpreceive",

                    "frgb" : [ 0.082353, 0.219608, 0.035294, 1.0 ],

                    "id" : "obj-25",

                    "fontsize" : 18.0,

                    "patching_rect" : [ 5.0, 5.0, 212.0, 27.0 ],

                    "textcolor" : [ 0.082353, 0.219608, 0.035294, 1.0 ],

                    "text" : "argument is port",

                    "id" : "obj-33",

                    "patching_rect" : [ 176.0, 144.0, 100.0, 17.0 ],

        "lines" : [             {

                "patchline" :                 {

                    "source" : [ "obj-24", 0 ],

                    "destination" : [ "obj-12", 0 ],

                    "hidden" : 0,

                    "midpoints" : [ ]

                    "source" : [ "obj-15", 0 ],

                    "destination" : [ "obj-24", 0 ],

                    "midpoints" : [ 129.5, 139.0, 92.5, 139.0 ]

                    "source" : [ "obj-14", 0 ],

                    "midpoints" : [ 137.5, 139.0, 92.5, 139.0 ]

                    "source" : [ "obj-6", 0 ],

                    "midpoints" : [ 18.5, 139.0, 92.5, 139.0 ]

                    "source" : [ "obj-1", 2 ],

                    "destination" : [ "obj-3", 0 ],

                    "source" : [ "obj-1", 1 ],

                    "destination" : [ "obj-2", 0 ],

                    "source" : [ "obj-1", 0 ],

                    "destination" : [ "obj-10", 0 ],

                    "destination" : [ "obj-32", 0 ],

                    "source" : [ "obj-32", 0 ],

                    "destination" : [ "obj-48", 1 ],

The explanation of the developer might helps as well:

just you need to get data "one packet = 4 data".

doesn't mater you get how many pack of data in one line.

that is depend on machine speed and your data pool programming method.

in case that is not good programming then you may loss some of data from IBVA hardware.

anyway CH 3, CH4 data is usually "000", "001" "002", "003".

so you can find which one is data 1, 2, 3, 4

then make new line , line feed for make print to next line. "n"

000 is 0V input. -> -2.5 V AD input ( - 100 micro V brain wave input )

200 is 2.5V input. -> 0 V AD input( 0 micro V brain wave input )

3ff is 5V input. -> +2.5 V AD input ( + 100 micro V brain wave input )

10 bit mean 1024 resolution from +-100 micro V brain wave input. ( 200 micro V full scale )

1 resolution is 0.1953125 0 micro V ( 200 micro V / 1024 )

CH3 and CH4 is not connect. (-2.5V connection that inside IBVA hardware )

 I could sort out to get integers from hex data, was not very difficult at all:)

 There are two more pictures which might help:

http://www.tedor2.extra.hu/uploads/osc1.jpg
http://www.tedor2.extra.hu/uploads/osc2.jpg

 This is the patcher I am using in Max/Msp:
(You might see the remaining data in the message box.)

{
	"patcher" : 	{
		"fileversion" : 1,
		"rect" : [ 1280.0, 110.0, 1024.0, 720.0 ],
		"bglocked" : 0,
		"defrect" : [ 1280.0, 110.0, 1024.0, 720.0 ],
		"openrect" : [ 0.0, 0.0, 0.0, 0.0 ],
		"openinpresentation" : 0,
		"default_fontsize" : 12.0,
		"default_fontface" : 0,
		"default_fontname" : "Arial",
		"gridonopen" : 0,
		"gridsize" : [ 15.0, 15.0 ],
		"gridsnaponopen" : 0,
		"toolbarvisible" : 1,
		"boxanimatetime" : 200,
		"imprint" : 0,
		"metadata" : [  ],
		"boxes" : [ 			{
				"box" : 				{
					"maxclass" : "newobj",
					"text" : "sprintf %s%s",
					"outlettype" : [ "" ],
					"id" : "obj-32",
					"fontsize" : 11.595187,
					"patching_rect" : [ 303.0, 188.0, 78.0, 20.0 ],
					"numinlets" : 2,
					"numoutlets" : 1,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "message",
					"text" : "X12e 156 2 2 2e5 2f6 3 2 1f8 1f7 2 2 3 1 2 2",
					"outlettype" : [ "" ],
					"id" : "obj-48",
					"fontsize" : 9.0,
					"patching_rect" : [ 308.0, 223.0, 518.5, 15.0 ],
					"numinlets" : 2,
					"numoutlets" : 1,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "newobj",
					"text" : "print bang",
					"id" : "obj-10",
					"fontsize" : 9.0,
					"patching_rect" : [ 14.0, 289.0, 53.0, 17.0 ],
					"numinlets" : 1,
					"numoutlets" : 0,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "newobj",
					"text" : "OpenSoundControl",
					"outlettype" : [ "", "", "" ],
					"id" : "obj-1",
					"fontsize" : 9.0,
					"patching_rect" : [ 14.0, 260.0, 88.0, 17.0 ],
					"numinlets" : 0,
					"numoutlets" : 3,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "newobj",
					"text" : "print messages",
					"id" : "obj-2",
					"fontsize" : 9.0,
					"patching_rect" : [ 49.0, 308.0, 75.0, 17.0 ],
					"numinlets" : 1,
					"numoutlets" : 0,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "newobj",
					"text" : "print time-tag",
					"id" : "obj-3",
					"fontsize" : 9.0,
					"patching_rect" : [ 83.0, 289.0, 72.0, 17.0 ],
					"numinlets" : 1,
					"numoutlets" : 0,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "newobj",
					"text" : "p cnmat_compatibility",
					"id" : "obj-5",
					"fontsize" : 9.0,
					"patching_rect" : [ 188.0, 37.0, 109.0, 17.0 ],
					"numinlets" : 0,
					"numoutlets" : 0,
					"fontname" : "Arial",
					"patcher" : 					{
						"fileversion" : 1,
						"rect" : [ 1582.0, 205.0, 385.0, 293.0 ],
						"bglocked" : 0,
						"defrect" : [ 1582.0, 205.0, 385.0, 293.0 ],
						"openrect" : [ 0.0, 0.0, 0.0, 0.0 ],
						"openinpresentation" : 0,
						"default_fontsize" : 12.0,
						"default_fontface" : 0,
						"default_fontname" : "Arial",
						"gridonopen" : 0,
						"gridsize" : [ 15.0, 15.0 ],
						"gridsnaponopen" : 0,
						"toolbarvisible" : 1,
						"boxanimatetime" : 200,
						"imprint" : 0,
						"metadata" : [  ],
						"boxes" : [ 							{
								"box" : 								{
									"maxclass" : "newobj",
									"text" : "udpreceive 7374 CNMAT",
									"outlettype" : [ "" ],
									"id" : "obj-1",
									"fontsize" : 9.0,
									"patching_rect" : [ 43.0, 142.0, 121.0, 17.0 ],
									"numinlets" : 1,
									"numoutlets" : 1,
									"fontname" : "Arial"
								}

							}
, 							{
								"box" : 								{
									"maxclass" : "comment",
									"text" : "Both udpsend and udpreceive support the 'FullPacket' message used by the CNMAT OpenSoundControl external. This means they can be used as drop in replacements for the [otudp] object.",
									"linecount" : 3,
									"id" : "obj-2",
									"fontsize" : 9.0,
									"patching_rect" : [ 21.0, 27.0, 299.0, 38.0 ],
									"numinlets" : 1,
									"numoutlets" : 0,
									"fontname" : "Arial"
								}

							}
, 							{
								"box" : 								{
									"maxclass" : "comment",
									"text" : "Although udpsend and udpreceive use OSC as their transport protocol, the OpenSoundControl object by CNMAT has more robust support for OpenSoundControl as a protocol including bundling of multiple OSC messages, string substitution, time stamping etc. udpsend and udpreceive support a simple subset of OSC.",
									"linecount" : 5,
									"id" : "obj-3",
									"fontsize" : 9.0,
									"patching_rect" : [ 20.0, 173.0, 296.0, 58.0 ],
									"numinlets" : 1,
									"numoutlets" : 0,
									"fontname" : "Arial"
								}

							}
, 							{
								"box" : 								{
									"maxclass" : "comment",
									"text" : "udpsend will respond to the 'FullPacket' message as expected. However, for udpreceive to know that it should pass on udp buffers as 'FullPacket' messages instead of decoding them itself you need to instantiate it with an optional third argument.",
									"linecount" : 4,
									"id" : "obj-4",
									"fontsize" : 9.0,
									"patching_rect" : [ 22.0, 70.0, 261.0, 48.0 ],
									"numinlets" : 1,
									"numoutlets" : 0,
									"fontname" : "Arial"
								}

							}
 ],
						"lines" : [  ]
					}
,
					"saved_object_attributes" : 					{
						"fontface" : 0,
						"fontsize" : 12.0,
						"default_fontface" : 0,
						"globalpatchername" : "",
						"default_fontname" : "Arial",
						"default_fontsize" : 12.0,
						"fontname" : "Arial"
					}

			}
, 			{
				"box" : 				{
					"maxclass" : "message",
					"text" : "maxqueuesize 512",
					"outlettype" : [ "" ],
					"id" : "obj-6",
					"fontsize" : 9.0,
					"patching_rect" : [ 9.0, 73.0, 86.0, 15.0 ],
					"numinlets" : 2,
					"numoutlets" : 1,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "newobj",
					"text" : "print receivedmess",
					"id" : "obj-12",
					"fontsize" : 9.0,
					"patching_rect" : [ 81.0, 227.0, 95.0, 17.0 ],
					"numinlets" : 1,
					"numoutlets" : 0,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "comment",
					"text" : "set local port to listen for messages on",
					"linecount" : 2,
					"id" : "obj-13",
					"fontsize" : 9.0,
					"patching_rect" : [ 188.0, 96.0, 131.0, 27.0 ],
					"numinlets" : 1,
					"numoutlets" : 0,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "message",
					"text" : "port 7005",
					"outlettype" : [ "" ],
					"id" : "obj-14",
					"fontsize" : 9.0,
					"patching_rect" : [ 128.0, 114.0, 56.0, 15.0 ],
					"numinlets" : 2,
					"numoutlets" : 1,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "message",
					"text" : "port 7401",
					"outlettype" : [ "" ],
					"id" : "obj-15",
					"fontsize" : 9.0,
					"patching_rect" : [ 120.0, 94.0, 55.0, 15.0 ],
					"numinlets" : 2,
					"numoutlets" : 1,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "newobj",
					"text" : "udpreceive 7005",
					"outlettype" : [ "" ],
					"id" : "obj-24",
					"fontsize" : 9.0,
					"patching_rect" : [ 83.0, 143.0, 86.0, 17.0 ],
					"numinlets" : 1,
					"numoutlets" : 1,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "comment",
					"text" : "udpsend & udpreceive",
					"frgb" : [ 0.082353, 0.219608, 0.035294, 1.0 ],
					"id" : "obj-25",
					"fontsize" : 18.0,
					"patching_rect" : [ 5.0, 5.0, 212.0, 27.0 ],
					"numinlets" : 1,
					"textcolor" : [ 0.082353, 0.219608, 0.035294, 1.0 ],
					"numoutlets" : 0,
					"fontname" : "Arial"
				}

			}
, 			{
				"box" : 				{
					"maxclass" : "comment",
					"text" : "argument is port",
					"id" : "obj-33",
					"fontsize" : 9.0,
					"patching_rect" : [ 176.0, 144.0, 100.0, 17.0 ],
					"numinlets" : 1,
					"numoutlets" : 0,
					"fontname" : "Arial"
				}

Osc to Max/Msp form Quartz Composer... (hex to float)