ASCII to string

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• bt_gatt_write_value_noresp HowTo convert ascii uint8_t string *.

  my C knowledge is very poor and so I have a question.

  use case:

  Crystal APP

  connected to a custom equipment

  Find services and connect to services: OK

  Characteristics of the found Services

  Record the reading for the notification Service: OK - all notifications are coming through

  now, I also have to WRITE a feature using

  int bt_gatt_write_value_noresp(int instance, uint16_t handle, uint16_t offset, const uint8_t *data, int size)
  

  This is the command that I want to write to the device as a String:

  "$HTMEA, 1, 7 * 7F\r\n".

  How to convert this string ascii uint8_t *?

  and what is the length (size)?

  using the. toAscii() I take a ByteArray and there is a. constData() which gives me a char *- but it does not help.

  looked at BT THE Primer, examples of applications and blogs, but did not find an example where a QString will be converted and sent to the device.

  the other way back to recall notice where the uint8_t * was transformed into a QString, I found in the sample application and this heart rate monitor market.

  thx for help

  overdraft.

  First, I had to get the hexadecimal value of my request chain.

  QString theRequest = "$HTMEA,1,,7*7F\r\n";const int characteristicLen = theRequest.size();uint8_t *characteristicBuffer = (uint8_t *) alloca(characteristicLen + 1);QString theRequestAsHex = theRequest.toAscii().toHex();
  

  so I found some utilities BT THE sample applications to help me turn this into uint8_t *.

  Utilities::hexToIntArray(theRequestAsHex, characteristicBuffer);
  

  The following methods of the utility:

  const QString Utilities::HEX_CHARS = QString("0123456789ABCDEF");
  uint8_t Utilities::hexToInt(QChar c1, QChar c2) {
      c1 = c1.toUpper();
      c2 = c2.toUpper();
      uint8_t result = 0;
      result = HEX_CHARS.indexOf(c1) * 16;
      result = result + HEX_CHARS.indexOf(c2);
      return result;
  }
  void Utilities::hexToIntArray(QString hex_string, uint8_t* output) {
      const size_t numdigits = hex_string.length() / 2;
      for (size_t i = 0; i != numdigits; ++i) {
          output[i] = hexToInt(hex_string.at(2 * i), hex_string.at(2 * i + 1));
      }
  }
  

  Thanks to the old guys BlackBerry John Murray and Martin Woolley, for all their great stuff on BT, BTLE and NFC.

• concatenate a string in hexadecimal with ASCII string

  Hello

  I'm new to LabView and I am building an application that talks to a camera. I'm stuck on something that seems simple enough: I need to concatenate a constant string of hexadecimal values (040D 0002...) with an ASCII hexadecimal string (00D0A10F, for example), which is emerging from a block 'number in string Hex. ' The output must be a string of hexadecimal values (040D 0002 00D0A10F) and go to the camera, but the block CONCATENATE transforms the ASCII string in hexadecimal display too, so that each character is converted to two hexagonal symbols...

  I found a very old post where someone claims that they have found a solution; Unfortunately, it is not displayed...

  Does anyone have an idea, how to do?

  Thank you very much!

  Michal

  Hello

  Give it a try - it converts an ASCII hexadecimal characters in ascii character string.

  So, if you view the output as hex, she must concatenate correctly with your other data.

  Dan

• Number in hexadecimal string conversion problem

  Hello

  for a serial communication, I need to send byte-code in an ascii hexadecimal string. When I use the constants and send them by VISA to the COM port it works fine, but if I use converters numbers it doesn't. Can someone show me what I'm doing wrong?

  deepearth

  --------------------------------

  Windows XP SP3, LV 8.5.1

  Since your string indicator is set to hexadecimal display, it seems you want to a hexadecimal string, a single byte/number.

  (You are currently using a hexadecimally format string, composed exclusively of ASCII of the 2 characters/byte "0.F" characters.) This is not what you want!).

  Here is another solution using type conversion:

  

• VI to the serial port to hyperterminal

  Hi guys. I use 2 RS232 cables to connect the 2 ports. I use 1 ports for hyperterminal. When I start my VI I want to see what is displayed in the hyperterminal. However, all I get is gibberish. Can I know what is the problem? Please advice. Thank you

  Assuming that you, connections are correct (might need null-modem cable) you probably see "gibberish" because you're not looking for ASCII characters.  Hypertermial will only display ASCII.

  You will need to convert your ASCII character string numbers to veiw on a terminal.  For example, if you have a 50 decimals you pass two-byte ASCII (hex representation) of 0 x 35 and 0 x 30 (or in decimal Rep. 53 and 48).

  Also, be very careful of your corresion point, where you take the table and convert it to a string.  Your table is an I32 (4 bytes), and your conversion truncates the I32 to a U8 and drops three bytes.  It's 'ok' for the data that is less than 256 (unsigned) but your values are signed and bigger.  You will have data loss.

  Edit: Try this where data is converted in place...

  

• Question about reading the hex data

  Hello! I'm a Novice of Labview and have a problem with reading the hex data.

  Basically, I bytes from the serial port like this: "80100E0E0AB4F646F24A00911267087E032080057FFF."

  It is not encoded in ASCII. What I want to do is to convert a hexadecimal string ASCII of the hexagon.

  so that the chain would become of ASCII hexadecimal numbers.

  I think that the following might be a solution, but I have no idea what the Subvi is in the solution.

  http://forums.NI.com/T5/LabVIEW/hex-string-to-ASCII-hex-string/m-p/886078/highlight/true#M400462 Thanks in advance and I thank you for your kind help!

  coolmatthew wrote:

  What I want to do is actually this.

  You use too much a lot of code for all this. All you need is a concatenate strings, replace your entire and other loop. Same result.

  

  (See also)

• Exact online: get a token oauth2

  Hi all

  I'm fighting to connect our Coldfusion (x 64) 11 oauth2 used by Exact Online Accounting s APImethods.

  Every call that I always return status 400 - Bad request. No additional information is provided, nor found on their development site.

  I've been in contact with their support team, but as they have no knowledge of Java/Coldfusion, they just to send me an example of call .net HTTP:

  strTokenBody = "code=" & strCode
  strTokenBody = strTokenBody & "&client_id=" & strClientID
  strTokenBody = strTokenBody & "&client_secret=" & strClientsecret
  strTokenBody = strTokenBody & "&redirect_uri=" & strCallbackURL
  strTokenBody = strTokenBody & "&grant_type=authorization_code"
  byteArray = Encoding.ASCII.GetBytes(strTokenBody)
  uri = strBaseURL & "/api/oauth2/token"
  
  Dim req As WebRequest = WebRequest.Create(uri)
  req.ContentType = "application/x-www-form-urlencoded"
  req.Method = "POST"
  req.ContentLength = byteArray.Length
  
  Dim stream As Stream = req.GetRequestStream()
  stream.Write(byteArray, 0, byteArray.Length)
  stream.Close()
  

  The credentials, I do check and work with the sample code above, according to the employee of the assistance service. Then, he stressed that the HTTP body must be an array of bytes to an ASCII encoded string, which is a count of all parameters to pass.

  I tried following approaches:

  -J' checked on the PHP code example that the Exact has put in place, but I can't determine the setting that escapes me.

  -changed the URL of the call to a local model to drop the demand (and headers) and I see that all the settings are there and that it appears correctly.

  Can someone point me in the right direction on how to proceed in this?

  Thanks for reading so far,

  Regards Bert.

  CFC, I did:

  <cfcomponent>
    <cfscript>
    // define all paths used for interfacing
    VARIABLES.Exact = {
    URL = {
    main = "https://start.exactonline.be/api", // main access URL
    authenticate = "/oauth2/auth", // for optaining an access code
    token = "/oauth2/token", // to get / refresh an access token
    user = "/v1/current/Me" // get current user data
    },
    access = {
    client = {
    name = "MyName", // from API access token
    id = "pre-generated API Id ", // from API access token
    secret = "pre-generated API secret" // from API access token
    },
    redirectURI = "My Site URL", forceLogin = 0,
    code = "Optained code through manual login form"
    },
    settings = {
    grant_authorization_code = "authorization_code",
    grant_refresh_token = "refresh_token",
    response_type_code = "code"
    }
    };
    // define the access token used in all API calls. Must be optained before starting any work.
    THIS.token = {
    access = "", // access key used for the session
    type = "", // type of token
    expiresIn = 600, // seconds the token will be life, default = 10 min
    refresh = "" // handle used to refresh current
    };
    </cfscript>
  
  
    <cffunction name="CreateASCIIByteArray" access="private" returntype="Any" output="false" hint="Converts a ColdFusion string to an ASCII Java byte array.">
    <cfargument name="str" type="string" required="true" hint="The string to get the byte array for.">
    <cfscript>
    return ToBinary( toBase64( ARGUMENTS.str ) );
    </cfscript>
    </cffunction> 
  
    <cffunction name="GetToken" access="public" returntype="any" output="false" hint="">
    <cfscript>
    LOCAL.URL = VARIABLES.Exact.URL.Main & VARIABLES.Exact.URL.token;
    LOCAL.result = DoHTTPRequest(
    method = "post",
    url = LOCAL.URL,
    params = [
    NewRequestParam(type="formField", name="client_id", value=VARIABLES.Exact.access.client.id),
    NewRequestParam(type="formField", name="client_secret", value=VARIABLES.Exact.access.client.secret),
    NewRequestParam(type="formField", name="redirect_uri", value=VARIABLES.Exact.access.redirectURI),
    NewRequestParam(type="formField", name="grant_type", value=VARIABLES.Exact.settings.grant_authorization_code),
    NewRequestParam(type="formField", name="code", value=VARIABLES.Exact.access.code)
    ]
    );
  
    return LOCAL.result;
    </cfscript>
    </cffunction>
  
    <cffunction name="NewRequestParam" access="private" returntype="struct" output="false" hint="Creates a new request parameter">
    <cfargument name="type" type="string" required="false" default="URL" hint="[header,CGI,body,XML,file,URL,formField,cookie]">
    <cfargument name="name" type="string" required="true" hint="Name of the parameter">
    <cfargument name="value" type="string" required="false" default="" hint="value for the paramter">
  
    <cfreturn ARGUMENTS>
    </cffunction>
  
    <cffunction name="DoHTTPRequest" access="private" returntype="Any" output="true" description="performs an HTTP request and returns the result as a structure.">
    <cfargument name="method" type="string" required="false" default="get" hint="[get,post,delete]">
    <cfargument name="url" type="string" required="true" hint="the complete URL to call">
    <cfargument name="params" type="array" required="false" default="#ArrayNew(1)#" hint="parameter list to send along the request, created with NewRequestParam().">
    <cfscript>
    // launch the http request
    LOCAL.httpRequest = new http(
    method = uCase(ARGUMENTS.method),
    charset = "utf-8",
    url = ARGUMENTS.url,
    compression = "none"
    );
  
    if (ARGUMENTS.method == "post") {
    LOCAL.httpRequest.setMultipartType("form-data");
    }
  
    // add params to request body
    LOCAL.body = [];
    LOCAL.paramCount = arrayLen(ARGUMENTS.params);
    for (LOCAL.index = 1; LOCAL.index <= LOCAL.paramCount; LOCAL.index++) {
    LOCAL.currentParam = ARGUMENTS.params[LOCAL.index];
    if (LOCAL.currentParam.type ==  "header") {
    LOCAL.httpRequest.addParam( argumentCollection = LOCAL.currentParam );
    } else {
    arrayAppend(
    LOCAL.body,
    LOCAL.currentParam.name & "=" & LOCAL.currentParam.value
    );
    }
    } // end-for
  
    LOCAL.httpRequest.addParam(
    type = "body",
    value = CreateASCIIByteArray( str = arrayToList(LOCAL.body, "&") )
    );
  
    // fire request
    try {
    LOCAL.http = LOCAL.httpRequest.send().getPrefix();
    // return serialized filecontent when able.
    if ( isJSON(LOCAL.http.FileContent) ) {
    LOCAL.return = deserializeJSON(LOCAL.http.Filecontent);
    LOCAL.return.statusCode = listFirst(LOCAL.http.statusCode," "); // status code is returned as "200 OK" instead of the number.
    } else {
    LOCAL.return = {
    statusCode = 500,
    message = LOCAL.http.Filecontent,
    request = LOCAL.httpRequest,
    result = LOCAL.http
    };
    } // end-if
    } catch (any except) {
    LOCAL.return = {
    statusCode = 500,
    message = except.type & " : " & except.message,
    URL = ARGUMENTS.url,
    params = ARGUMENTS.params,
    fullExcept = except
    };
    } // end-catch
    return LOCAL.return;
    </cfscript>
    </cffunction>
  </cfcomponent>
  

  I finally managed to make it work, but it seems that exact online needs a few valid userAgent sent along! CF sends the value 'Coldfusion' as the default user agent string.

  Right now I put in userAgent = "Mozilla/5.0" in my cfhttp, I got my symbolic discount.

  To be on the safe side, I also added compression = 'none' setting to my cfhttp.

  Best regards, Bert.

• Decimal string to string Ascii (hex)

  Hello

  I want to convert a decimal string like this "12345" in the string (hex) Ascii as this "3132333435"

  How can I do?

  concerning

  Schwede

  It is a way to do it.

  

• ASCII to HEX Strings BIG string

  Hello guys,.

  I know that it is already a lot of posts on this issue, but I couldn't find exactly what I need and also could not manage to solve it myself...

  I need to convert a string with ASCII characters in a string that contains these characters in HEXADECIMAL representation.

  What I did:

  

  Apparently, it works very well, but only for a limited number of characters defined by the representation of the data of the constant 0 (U64). It allows me to convert that 8 ASCII characters, as you can see from the image below:

  

  So, it converted from 0 to 7, but not the other characters (8 and 9).

  Any ideas?

  Thanks in advance!

  What is the data type of the constant plugs into the cast.  My guess is that it is a U64.  So it will be cataloged only the first 8 bytes of your string to a number, then you do hex on these 8 numbers.

  Use the string to byte array.  Or you could also catalogued where an array of integers U8 is connected to the conversion function.

• How to convert the Ascii string containing hex to hex string info?

  Dear all,

  I am busy doing a control/reading program for pumps of ISCO.

  Right now I'm in trouble with to send orders for PUMPS in HEXADECIMAL. When I use a CONTROL to the STRING in HEX display, everything works fine (when I manually write down the command in the control of the chain).

  Exist it a couple of pieces order: string Destination, length, ordering, Checksum. I'm doing a sup - screw that automatically calculates the checksum (modulo 256) and adds it to the string. Everything is going well: first of all, I shared the ascii bytes command and I calculate the checksum and add as ASCII HEXADECIMAL value to the chain of command. Also a CR (= 0d) is added. Now the whole string must be converted to hex. The string contains the right nummers HEX, but they are in ASCII format. Here was I feel worth it, I don't know how to do it!

  So to summarize:

  I have an ascii string that contains the values HEX (for example 315230303652454D4F544531420D) and it must be converted to a HEX string (for instance 3152 3030 3652 454 4531 420 4F54) for the pump of the ISCO can understand the command.

  The VI is attached.

  Thank you in advance,

  Bio

  Bio,.

  This should do what you want.

• convert integers in equivalent characters in string - character of ASCII code

  I got out of my data and information of the associated string to an array of strings, and then to a spreadsheet file.

  I want to do this by converting an identical string of characters (integers and other numbers).

  I tried Type font with a constant string as the input of type but it DOES NOT WORK.  Instead, I get the ASCII character whose numeric designation corresponds to the integer, for example integer '50' become 'P' capital.

  I want all over '50' string '50 '.

  Please advise, and no, I don't want to make the berries of the clusters.

  I found my answer, but only after the search for 'Number' rather than 'Integer' conversion conversions.

  In the range of programming - number of string - string/number of Conversion - decimal string functions:

  'Converts number to a string of decimal digits less than width characters wide or more if necessary. If the number is floating point, it is rounded up to a 64-bit integer before the conversion. »

• converting a hexadecimal string to withh on ascii bytes

  How to convert a hexadecimal string of numbers of bytes without ascii codes, then all the octets converted is expected to come in a package

  Your question is very ambiguous. Please explain.

  Can you give us a Vi containing an example of string and what you want out of it. What is the dataype 'packets '?

• How to convert the string with numbers in U8 with ascii

  Hello

  I have a string with only numbers 0. 9 paper.

  Now, I want to convert to table-U8.

  He works here, but now the problem: How can I change each character to its ascii value?

  Example:

  entry: 123 (string)

  output: x 31, x 32, x 33 (U8-array)

  Thanks for the help

  It's very easy

  String to Byte Array Function
  Have the Palette: string/array/path Conversion functions

  Converts a string to an array of unsigned bytes. Each byte in the array has the ASCII value of the character corresponding to the string.

• Get the Ascii code of a string

  Hi all

  I need to get the ascii code of a character, and I can't find the appropriate function to do.

  For example, I get a string like this :--> 'X 6T8OP' and I want to turn it into this: 54 84 56 79 80 32 88

  Note: I'm using Labview 8.2

  Well thanks to all!

  Salvation of output,

  Use the function "string into byte array.

  Mike

• String ASCII to decimal string and its sum

  Hi all

  I am a beginner in Labview and this is my first post on the forum.

  I get a package series "1200F" on a MCU COM port. These are all ASCII characters.

  I want to convert all of these ASCII characters into decimal numbers and add their decimal values to get the sum. So I took the ASCII string in a table using "Array of strings of bytes" and then typecast this constant using type U8. I put this in a loop and collects the decimal value using the Array function build. So I "Add elements of an array" function to add these decimal values to get the sum.

  The problem is that for the input string, I am able to get the sum of "1200" only. At the time wherever I type the last character ASCII F, the sum does not. I see that when the sum exceeds 255 it resets again from 0. I have attached the VI for reference.

  Any help would be appreciated.

  

  Convert 32 to avoid the limitation 255 of U8.