Some functions missing like strcasecmp, sprintf, dtostrf ?

[ghost]

Using this function call:

strcasecmp

results in compiler error:

error: 'strcasecmp' was not declared in this scope

same issue for these functions: sprintf dtostrf strtol ltoa

[chadouming]

have you imported stdio ? cause sprintf works fine here once stdio is imported.

[ghost]

including the stdio.h fixed the sprintf but the others still have issues. tried stdlib.h but didn't help.

[rogerclarkmelbourne]

dtostrf is an AVR specific function.

Some files from the SAM core of the arduino project need to be added to the cores files

See https://github.com/arduino/Arduino/search?utf8=✓&q=dtostrf

Which shows which files need to be copied to the repo and how they get included

I'm not sure why normal c functions are missing e.g ltoa

Did you try adding your own prototype for these?

[Links2004]

the functions are implemented and working in the last git version. to use the functions you need to so the include like this:

extern "C" {

#include <stddef.h>
#include <stdarg.h>
#include <stdio.h>

}

[rogerclarkmelbourne]

Can't this be added to one of the central includes e.g. Arduino.h ?

[luc-github]

'strtok ' was not declared in this scope

strtok neither strtok_r is found even adding

extern "C" {

#include <stddef.h>
#include <stdarg.h>
#include <stdio.h>

}

I use the arduino-1.6.1-p1-windows.zip which a part this problem works well so far any way to add it ?

[ghost]

Some stuff is solved and found some workarounds for others.

But still can't use this one: error: 'strcasecmp' was not declared in this scope strcmp is ok, strcasecmp is not ? I guess these should be in the same library? Or it's just not implemented?

[Links2004]

you shut update to the latest git version only need to replace the ".\arduino-nightly\hardware\esp8266com\esp8266" directory. with the directory from git: https://github.com/esp8266/Arduino/tree/esp8266/hardware/esp8266com/esp8266

strtok_r is implemented: https://github.com/esp8266/Arduino/blob/esp8266/hardware/esp8266com/esp8266/cores/esp8266/libc_replacements.c#L162 and strcasecmp to: https://github.com/esp8266/Arduino/blob/esp8266/hardware/esp8266com/esp8266/cores/esp8266/libc_replacements.c#L204

[luc-github]

Actually I have also used the standalone module of sandeep 0.0.3 which has the file and the modification and still strtok_r is not in scope - I will update the directory like you suggest and feedback later Thanks for your help

[luc-github]

seems the function is not visible, my test skech is compiling well with a mega board but failed with ESP8266 -

test1.ino: In function 'void loop()': test1.ino:17:37: error: 'strtok_r' was not declared in this scope Error compiling.

I have did what was suggested download latest git version - I have the verified that I have the hardware/esp8266com/esp8266/cores/esp8266/libc_replacements.c with strtok_r inside =>yes

extern "C" {
#include <stddef.h>
#include <stdarg.h>
#include <stdio.h>
}
void setup() {
  // put your setup code here, to run once:
}
void loop() {
  // put your main code here, to run repeatedly:
    char * b = strtok_r (NULL,".",NULL);
}

Did I missed something ? Thanks

[Links2004]

strtok_r is part of the string.h you need to include it.

extern "C" {
#include <string.h>
}

good info base is: http://www.cplusplus.com/reference/clibrary/

[luc-github]

do not change the result - I have tested before actually and just redid now to confirm and still _'strtokr' was not declared in this scope It is weird

even weird is strcat has no issue

[Links2004]

strange if i try

extern "C" {
#include <stddef.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
}
void setup() {
  // put your setup code here, to run once:
}
void loop() {
  // put your main code here, to run repeatedly:
    char * b = strtok_r (NULL,".",NULL);
}

it is compiling.

i add all includes to the Arduino.h and also implement the "strtok" hope this helps.

https://github.com/Links2004/Arduino/tree/esp8266/hardware/esp8266com/esp8266

[luc-github]

Yes - I must do something wrong somewhere - I will clone the git to avoid to download the zip

Thanks for your time

[ghost]

I just do not get it to work with strcasecmp. Must have screwed up something somewhere...

Finally decided to include the function into my sketch:

int strcasecmp(const char * str1, const char * str2) { int d = 0; while(1) { int c1 = tolower(_str1++); int c2 = tolower(_str2++); if(((d = c1 - c2) != 0) || (c2 == '\0')) { break; } } return d; } At least i can continue and i managed to finish my entire project! Thanks for this amazing piece of work!