 Okay, this is opened with the cube MX, this is our IR project, and now the project must be in the user, in the application folder, in user, our main.c. This file we will use for this hands-on. In the main.c it's the main function, you can see it's the hl init for the cube, the system clock config, this is configuration of the clocks, how we want them, and there is also GPO init where we have our init for the GPO functionality. About these functions we will talk in the next lessons, don't be scared, now we only testing our hardware to be sure that everything will work during the next hands-ons. And how to toggle with the delet, it's very easy, usually all functions in the cube hl library starting with the hl, then we type the type of the periphery, here it's the GPIO, general purpose input output, and if we don't know the functionalities we can use for example control space, then he whisper asked all the possibilities, and I know that here is the toggling function, the toggling toggle pin, you can use the toggle pin, and now the parameters, first parameter is the GPIO port, I remember that it was GPIO A, and there is the GPIO pin which I know I have defined the GPIO underscore pin underscore 5. Later on I will explain you how to discover all the functionalities which the library have and how to discover the parameters, don't worry. And also because this toggling will be too fast, you can remember that my frequency of the core is the 60 MHz, then I need here put some delay, it's against I think with the hl, and the function is called underscore delay, very simply. In the milliseconds, parameter is the millisecond, the delay I can use the 500. Now I can compile my code, here in the project make, or the compile depends on you, because I never compiled my code before, I can use this one, let's take a while, okay. If everything is okay, your board is connected, your board is not blinking, you can see the LED one, it's in the steady state, on my clock it, you can try to flash and download your code. You can see on my side no problems, the application is now loaded into the microcontroller, I'm on the beginning of the main, and if I run my code, you will see the LED is toggling. And this is all how to make everything run in the IR, then if you want to stop debugging, you press this curse, and if you want to stop the debugging for a while and step your code, you can do this with the break, and here use this button for the stepping. Okay, and next lesson I will show you how to do the same in the kale.