string.startsWith() and other associated functions

Using Arduino Programming Questions
#1

I used the string.startsWith() and string.remove() functions and a few others while making a program to parse SMS's. Now ater this I am trying to write an equivalent code for it on STM32F373 uC. What I was thinking, was to use the code that these string functions use so that i can avoid some hassle of having to write the code for string operations from the scratch. But i do not know where to look for those codes. which library file or which files to look into.

Also, any other alternate methods reference links are appreciated.

Thanks.

#2

What language are you using to program the STM32F373 ?

As I understand it the String functions are standard C++ functions, but if you are using C or C++ you should consider using the cstring functions

#3

They files are WString.h and WString.cpp. They are in the core library, the location of which depends on which board you have selected from the Arduino IDE's Tools > Board menu.

Here's an easy way to find the location of the active core library:

  • Select a board from the hardware package from the Tools > Board menu
  • File > Examples > SPI > BarometricPressureSensor
  • Sketch > Show Sketch Folder
  • Move up folder levels until you reach the one that contains boards.txt
  • You will find the core library in the cores/{core name} subfolder, where {core name} is set by the build.core field of the selected board in boards.txt (often there is only one core library in a hardware package and thus you would not need to check which the board uses).

Interestingly the rogerclarkmelbourne/Arduino_STM32 package has a version of WString for STM32F1 and STM32F4 but not STM32F3.

#4