I am working on VTOL aircraft and currently I am looking for some good board as flight controller (FC). I could made it by myself, but it requests lot of time. I was thinking about one of fpv drone FC (I have avaiable this one:
This board has very small dimensions and it has already everything I need. The problem is that it is made for softwares like betaflight etc. It uses STM32 F405 so I tried to add STM 32 support for arduino (https://github.com/stm32duino/Arduino_Core_STM32) and upload arduino code in it.
I had to install stm32 cube programmer and because this board is not one of arduino boards I have to build the code for different board with same processor (FEATHER_F405). Because of it I have to change board pinout in this file (C:\Users\\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.8.0\variants\FEATHER_F405). I checked if are those pins correct (in code I command to those pins to be High and then Low while I was measuring them with multimeter). So all the pins are correct. I was able to blik the onboard LED and beep the buzzer. The only problem I have is serial communication. I tried to send some Strings to computer via serial port, but I didnt received any data. Here is sample code that I used:
#include <SoftwareSerial.h>
#define LED 4 //PB_5 //Inverted (High => LED ON)
#define BUZZ 3 //PB_4
#define _RX1 D0 //PA_10
#define _TX1 D1 //PA_9
//#define D_P 35 //PA_11
//#define D_M 36 //PA_12
//SoftwareSerial mySerial(_RX1, _TX1); // RX, TX
HardwareSerial hwSerial_1(_RX1, _TX1); // RX, TX
void setup() {
hwSerial_1.begin(9600);
//mySerial.begin(9600);
pinMode(LED,OUTPUT);
pinMode(BUZZ,OUTPUT);
//pinMode(_RX1,OUTPUT);
//pinMode(_TX1,OUTPUT);
//pinMode(D_P,OUTPUT);
//pinMode(D_M,OUTPUT);
}
void loop() {
digitalWrite(LED, HIGH);
/*
digitalWrite(_RX1, HIGH);
digitalWrite(_TX1, HIGH);
digitalWrite(D_P, HIGH);
digitalWrite(D_M, HIGH);*/
delay(1000);
digitalWrite(LED, LOW);
/*
digitalWrite(_RX1, LOW);
digitalWrite(_TX1, LOW);
digitalWrite(D_P, LOW);
digitalWrite(D_M, LOW);*/
delay(1000);
digitalWrite(BUZZ, HIGH);
delay(100);
digitalWrite(BUZZ, LOW);
delay(1000);
hwSerial_1.println("HelloWorld");
//mySerial.println("HelloWorld");
}
I tried to run serial communication via USB and via UART1 (I used USB/ TTL conventer -> FT232), but non of these works. I also tried to use software serial and hardware serial library, but it didnt helped.
Do you have any advices how to make serial communication work?
