Ardunio

Arduino It's convenient and flexible 、 Easy to use open source electronic prototype platform . Include hardware （ All kinds of Arduino plate ） And software （ArduinoIDE）. By a European development team in 2005 Developed in winter . Its members include Massimo Banzi、David Cuartielles、Tom Igoe、Gianluca Martino、David Mellis and Nicholas Zambetti etc. .

It is built on open source code simple I/O Interface version , And has the use of similar Java、C Linguistic Processing/Wiring development environment . It mainly consists of two parts ： The hardware part can be used for circuit connection Arduino Circuit board ; The other one is Arduino IDE, The program development environment in your computer . All you need is to be there. IDE Write program code in , Upload the program to Arduino Back of circuit board , The program will tell Arduino What does the circuit board have to do .

One 、 stay Arduino IDE Next finish STM32 Serial communication program

Download it on the official website ARDUINO IDE Software
open , Select tool —> Development board —> Development board Manager

look for Arduino SAM Boards(32-bit ARM Cortex-M3) Installation .
wow , Erroneous ？

resolvent ： Click on “ file -> Preferences ”
Something's wrong , My opening is blank .

A operation , Just can download

The development board I use is stm32f103, Choose this

Then link with the real object
usb Connect the serial port development board to the computer

next step , Burn program
Target program ：

int flag=1;   
char Stop[]="stop\n";
void setup() {
// initialization 
pinMode(PB0, OUTPUT);//PB0 It's green ,PB1 For blue ,PB5 In red , It can be changed as needed 
Serial.begin(115200);
}
void loop() {
int i=0,flag_s=0;
char inByte[50];
digitalWrite(PB0, HIGH); // Little lights 
delay(500); //  Delay 
digitalWrite(PB0, LOW); // Small lights went out 
delay(500); //  Delay 
while (Serial.available()> 0)     // When the send buffer has data 
{
        inByte[i] = Serial.read();    // Take out and read from the buffer of the serial port Byte The data of 
        delay(10); 
        i++ ;                              
}
if(Stop[i]=inByte[i])
{
  if(Stop[i-1]==inByte[i-1]&&Stop[i-2]==inByte[i-2]&&Stop[i-3]==inByte[i-3])
  {
  flag=0;
  Serial.println(" received ！");
  }// When I received stop Stop at command and reply to receive 
}
if(flag==1)
{  
Serial.println("Hello World!");// Send data to serial port 
delay(100); //  Delay 
}
}

This code program realizes the following three functions
1） Continuous output to serial port “Hello world！”
2） When receiving “stop” when , Stop output
3) The light flashes .
Boil ！
Remember to save , And how to upload Serial

My serial port is COM4
Before burning files, you need to press RESET Button to clear .

Because the code can also realize the small light flashing function , After burning in, the small light began to flash
This is Hu. We open the serial port and click the serial port monitor


Ah, there is a problem ？？
For a long time , It turns out that I just met somewhere ,usb The interface is loose , Lacrimal .
Output a pile …… The statement ？？
Check the baud rate setting
The baud rate in the lower right corner of the serial port monitor is set to 115200 Baud rate ,

It's finally over , Why do I have a bunch of strange problems

summary

Arduino IDE Software STM32 Serial communication is also very simple , Interface design functions are not so cumbersome . The above is based on Ardunio complete STM32 Development board serial communication program .

If we want to say based on standard library functions and based on HAL Of library functions stm32 Differences in programming methods , First of all, the standard peripheral library makes it easier for us to write code .
and HAL The library shows that it can be implemented from a STM32 The product was ported to a different STM32 Series of products , And it's very convenient ！