B4R Question Passing a char array to a inline C code

[tigrot]

Hi everybody,
I have the need to pass a char array to a inline C code:

'B4R code
FindString("DR3=")
public Sub FindString(src() As Byte)
     RunNative("findstring", src)
     Return
End Sub
//B4R C
#if C

B4R::Object* findstring(B4R::Object* o) {
     char *testx= (char *)B4R::Object::toPointer(o);
    Serial.println(testx);
 }
#end if

It prints a single char(+). It's a long time I don't use C and C++ and I cannot see what I'm missing...

Best regards
Mauro Zanin

 

[Erel]

Private Sub AppStart
   Serial1.Initialize(115200)
   Log("appstart")
   Dim bb() As Byte = "abc"
   RunNative("PassBytes", bb)
End Sub


#if C
  void PassBytes(B4R::Object* o) {
   B4R::Array* b = (B4R::Array*)B4R::Object::toPointer(o);
     char* c = (char*)b->data;
   ::Serial.println(c);
  }
#end if

BTW, if you are searching in strings or arrays of bytes then you can use ByteConverter from rRandomAccessFile library.

 

[tigrot]

Also if strings are stored in PROGMEM? My table is to decode a string code.

 

[Erel]

You can use ByteConverter to search in arrays of bytes. You will need to read the data to an array and then search in it. You should of course only load small parts of the data each time.