x 動作確認済み2022/5/28 20:16

x OBでPA0をGPIOにするがわかる人むけ

x 場合によっては、二度と書き込めなくなります。

目的
動くかどうかわからないがやってみる
結果動いた

答え合わせ



  Serial.setTx(PA2_ALT1);
  //Serial.setTx(PA14);
  //Serial.setTx(PB6);
  Serial.setHalfDuplex();
  Serial.begin(9600);



8

  PB6  USART1_TX

  PA14 USART2_TX 
  PA15 USART2_RX

1

  PB7 USART1_RX

4

  PA2 USART2_TX

  PA2 LPUART_TX

名前は、まだない




STM32G031-DISCO

Enabled(generic Serial)
 Serial1.begin(9600);    OK?->NG
 Serial2.begin(9600);    NG
 SerialLP1.begin(9600);  NG

Enabled(no generic Serial)
 Serial1.begin(9600);    NG
 Serial2.begin(9600);    NG
 SerialLP1.begin(9600);  NG

Disabled(no Serial support)
 Serial1.begin(9600);    NG
 Serial2.begin(9600);    NG
 SerialLP1.begin(9600);  NG



Nucleo G031K8

Enabled(generic Serial)
 Serial1.begin(9600);    NG
 Serial2.begin(9600);    NG
 SerialLP1.begin(9600);  OK?->NG

Enabled(no generic Serial)
 Serial1.begin(9600);    NG
 Serial2.begin(9600);    NG
 SerialLP1.begin(9600);  NG

Disabled(no Serial support)
 Serial1.begin(9600);    NG
 Serial2.begin(9600);    NG
 SerialLP1.begin(9600);  NG

検証プログラム



//SER_PA_2_test_031_2

#include <Arduino.h>
#include <HardwareSerial.h>

//初期化
void setup() {

  delay(3000); //not Delete

 //extern HardwareSerial Serial;
 //Serial.setTx(PA2);
 //Serial.setRx(PA2);
 //Serial.setHalfDuplex();
 //Serial.begin(9600);
 //while(1){Serial.println("0");delay(2000);}


 //extern HardwareSerial Serial1;
 //Serial1.setTx(PA2);
 //Serial1.setRx(PA2);
 //Serial1.setHalfDuplex();
 //Serial1.begin(9600);
 //while(1){Serial1.println("0");delay(2000);}


 //extern HardwareSerial Serial2;
 //Serial2.setTx(PA2);
 //Serial2.setRx(PA2);
 //Serial2.setHalfDuplex();
 //Serial2.begin(9600);
 //while(1){Serial2.println('0');delay(2000);}


 //extern HardwareSerial SerialLP1;
 SerialLP1.setTx(PA2);
 SerialLP1.setRx(PA2);
 SerialLP1.setHalfDuplex();
 SerialLP1.begin(9600);
 while(1){SerialLP1.println('0');delay(2000);}

}//setup

//メインループ
void loop(){
}//loop

(ちょとだけ前進)

PA14に注目



//SER_HalfDuplex_test_031_2


#include <Arduino.h>
#include <HardwareSerial.h>


//初期化
void setup() {

  Serial.setTx(PA14);
  //Serial.setTx(PB6);
  Serial.setHalfDuplex();
  Serial.begin(9600);

  pinMode(PB7, OUTPUT);

}//setup


//メインループ
void loop() {

  Serial.println("Hello World");

  digitalWrite(PB7, HIGH);
  delay(1000);
  digitalWrite(PB7, LOW);
  delay(1000);

}//loop

(完成) PA2からハローワールドの出力




//SER_HalfDuplex_test_031_2


#include <Arduino.h>
#include <HardwareSerial.h>


//初期化
void setup() {

  delay(3000);

  Serial.setTx(PA2_ALT1);
  //Serial.setTx(PA14);
  //Serial.setTx(PB6);
  Serial.setHalfDuplex();
  Serial.begin(9600);

  pinMode(PB7, OUTPUT);

}//setup


//メインループ
void loop() {

  Serial.println("Hello World");

  digitalWrite(PB7, HIGH);
  delay(1000);
  digitalWrite(PB7, LOW);
  delay(1000);

}//loop