PlatformIO 开发STM32 (Arduino框架)

创建项目

Board选 STM32F103C8(20k RAM.64k Flash)(Generic)

硬件接线及跳线

跳线

使用Jlink无需配置boot引脚

建议都默认为0，boot启动模式参考文档

硬件接线

JLINK	STM32 Board
(Reset)	(R)
(3.3v)	(3.3v)
(SWCLK)	(DCLK)
(SWDIO)	(DIO)
(GND)	(GND)

JLink驱动安装包及其手册

测试代码

`platformio.ini`

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html

[env:genericSTM32F103C8]
platform = ststm32
board = genericSTM32F103C8
framework = arduino

; board_build.f_cpu = 72000000L

upload_protocol = jlink

`main.cpp`

/*
 * @Author: Dapenson
 * @Date: 2022-03-28 15:20:38
 * @LastEditors: Dapenson
 * @LastEditTime: 2022-03-28 16:36:05
 * @FilePath: \F103EnvTest\src\main.cpp
 * @Description:
 *
 * Copyright (c) 2022 by Dapenson, All Rights Reserved.
 */
#include <Arduino.h>

const int ledPin = PC13;

void setup()
{
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}

void loop()
{
  digitalWrite(ledPin, HIGH); // turn the LED on (HIGH is the voltage level)
  delay(1000);                // wait for a second
  digitalWrite(ledPin, LOW);  // turn the LED off by making the voltage LOW
  delay(1000);                // wait for a second
  Serial.println("Done!");
}

引脚笔记

GND，3.3v都是内部相通的。3.3v直接给单片机供电，5v接口会通过LDO稳压芯片给单片机供电。
microusb只能供电不能下载。
另一端swd下载接口，和跳线帽搭配使用，Jlink，STlink都可以。
跳线后可串口下载（PA9 PA10）,建议swd,方便测试。
PC13连指示灯。
B12_{`PB15`是`SPI2`，`PA4`}7是SPI1, PA9 PA10是串口1，PA2 PA3是串口2,PB10 PB11是串口3，PB6~PB9一般可以用于pwm输出，对应TIM4。 PC13~15 用于时钟相关。
VB用于后备电源供电。
ADC接口：PA0~PA7,PB0 PB1。尽量别用PB3 PB4 PA15，它们和下载口相关。