Now is possible use some STM32 in the ARDUINO IDE.
For do this follow the steps below.
- Download and install the Arduino IDE
- Launch Arduino IDE.
Click on File menu and then Preferences
The Preferences dialog will open, then add the following link to the Additional Boards Managers URLs field:
https://github.com/stm32duino/BoardManagerFiles/raw/master/STM32/package_stm_index.json
- Click OK twice, see below.
- Click on Tools menu and then “Boards > Boards Manager”
Next in the box n.4 type: stm32
and install all the boards that appears (5, 6 and 7).
See below.
- Now select again: Tools > Boards and choose the STM32 board that you want to use.
See below, I selected the NUCLEO L476RG
- Now select: Mass Storage, see below.
- And now select the COM port where is connected your NUCLEO L476RG, see below.
Do not worry if it gives you an indication of a different board, in my case indicates NUCLEO F103RB.
There is a problem of identification in the current IDE version but it works.
Remember: for address the I/O of the NUCLEO-XXX board you must refer to pinout of Arduino Uno R3, see below the light blue box (pin_1 … pin_19).
- Now try to read one Digital InPut and send the result via USB Virtual-COM.
Select: FILE > NEW
and in the window that appear type the code below.
// Read InPut PIN and send the result over USB-Virtual COM
int pushButton = 2;
void setup() {
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
// make the pushbutton's pin an input:
pinMode(pushButton, INPUT);
}
void loop() {
// read the input pin:
int buttonState = digitalRead(pushButton);
// print out the state of the button:
Serial.println(buttonState);
delay(1); // delay in between reads for stability
}
- Compile
- Download
- and press the icon of the serial terminal
You must see something like below.
Below there is the button connection on the NUCLEO-L476RG.
When you press the button, in the terminal you must see 0, if you release the button you must see 1.
The button is Normally Open.
