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README
LGPL-3.0

STM32 Blue Pill


STM32是由ST公司开发的一款高性能、低功耗的32位微控制器。当前市面上非常受欢迎的一款“蓝色药丸(Blue Pill)”核心板就是基于STM32f103c8t6设计的,采用DIP40封装,体型小巧、价格低廉(参考价¥10),相对其他型号的STM32单片机也没有阉割太多外设资源,基本的定时器、串口、I2C、SPI、JTAG/SWD调试接口都有。得益于国内庞大的开发者社区,针对STM32单片机的相关参考资料也非常丰富。为了方便以后的开发,我对“蓝色药丸”相关的软硬件资料进行了一些整理。
部分信息来源于网络,将插入原址链接。为防原链接失效,也方便查看,另存了部分重要资料,如有侵权,请联系本人(siyouluo11@gmail.com)删除

STM32

The STM32 family of 32-bit microcontrollers based on the Arm® Cortex®-M processor is designed to offer new degrees of freedom to MCU users. It offers products combining very high performance, real-time capabilities, digital signal processing, and low-power and low-voltage operation, and connectivity, while maintaining full integration and ease of development.

ST公司基于不同的Cortex内核开发了多个系列的STM32单片机,其中Blue Pill上搭载的处理器芯片为stm32f103c8t6,属于Cortex®-M3内核,F1系列。
你可以根据你的项目需求,参考STM32选型手册选择合适型号的处理器芯片

STM32分类

Blue Pill

处理器资源

该处理器芯片内置20k RAM, 64k ROM, 3个USART, 2个硬件I2C, 2个硬件SPI, 1个CAN, 1个高级定时器(TIM1), 3个通用定时器(TIM2,3,4), 1个SysTick定时器, 1个独立看门狗, 1个温度传感器, 若干GPIO口等资源,最大时钟频率72MHz.

Pinout-Diagram

上图中有部分接口重复是因为STM32端口可以复用,将某端口映射到其他端口使用

核心板硬件

BluePill实物图-正面 BluePill实物图-反面
Blue Pill核心板外接5V供电后可以单独工作,供电方式可以选择通过在标有5V和GND的管脚之间加上5V电压,或者通过板载micro-USB接口供电,其中micro-USB接口的5V管脚直接连接到核心板5V管脚。板载一颗稳压芯片将电压降低到3.3V为处理器芯片供电,也可以给核心板之外的其他模块(例如I2C-OLED显示屏等)供电。

程序下载

  1. 通过USART串口下载:
    BOOT0->1
    BOOT1->0
    USB-TTL模块GND->核心板GND
    USB-TTL模块5V->核心板5V
    USB-TTL模块TX->核心板RX(PA10)
    USB-TTL模块RX->核心板TX(PA9)
    按一下RST复位按键
    通过MCUISP软件下载HEX可执行文件
  2. 通过ST-LINK下载:
    ST-LINK不能给核心板供电,所以需要单独供电,推荐micro-USB供电,在keil5中点击下载
ST-link管脚连接ST-link管脚连接
  1. 通过板载micro-USB接口下载(待验证)

开发例程

仿真调试

参考链接

ST中国-官网
armkeil
板级支持包
正点原子
开源电子网-正点原子
源地工作室
stm32-base

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