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# 初识STM32 | ||
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## 1. 简介 | ||
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**STM32(STMicroelectronics Microcontroller)** 是由意法半导体(STMicroelectronics)公司开发的一系列32位微控制器。 | ||
这些微控制器广泛应用于各种嵌入式系统,包括消费电子、工业控制、汽车电子、医疗设备、物联网(IoT)等领域。 | ||
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STM32系列微控制器具有以下特点: | ||
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1. **高性能**:STM32微控制器采用高性能的ARM Cortex-M内核,提供高处理速度和低功耗。 | ||
2. **丰富的外设**:STM32系列微控制器集成了多种外设,如ADC(模数转换器)、DAC(数模转换器)、PWM(脉宽调制)、SPI(串行外设接口)、I2C(集成电路间总线)、UART(通用异步收发传输器)、USB(通用串行总线)、CAN(控制器局域网)、GPIO(通用输入输出)等,满足各种应用需求。 | ||
3. **低功耗**:STM32系列微控制器具有多种低功耗模式,适用于电池供电的便携式设备。 | ||
4. **可扩展性**:STM32系列微控制器支持多种存储器选项,包括闪存、SRAM、EEPROM等,并且可以通过外部存储器扩展存储容量。 | ||
5. **开发工具**:意法半导体提供了丰富的开发工具,包括STM32CubeMX(用于配置和初始化微控制器)、STM32CubeIDE(集成开发环境)、STM32 HAL库(硬件抽象层库)等,方便开发者进行软件开发。 | ||
6. **生态系统**:STM32微控制器拥有庞大的生态系统,包括丰富的开发板、教程、示例代码、社区支持等,便于开发者进行学习和开发。 | ||
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总之,STM32微控制器凭借其高性能、丰富的外设、低功耗、可扩展性、开发工具和生态系统,成为嵌入式系统开发的热门选择。 | ||
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## 2. STM32选型 | ||
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> 中国有句古话说的好:“工欲善其事,必先利其器”,所以,在开始我们的嵌入式旅程前,得先挑选一块趁手的开发板。 | ||
### 2.1 STM32分类 | ||
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<table> | ||
<tr> | ||
<td>CPU位数</td> | ||
<td>内核</td> | ||
<td>系列</td> | ||
<td>描述</td> | ||
</tr> | ||
<tr> | ||
<td rowspan="9">32</td> | ||
<td rowspan="2">Cortex-M0</td> | ||
<td>STM32-F0</td> | ||
<td>入门级</td> | ||
</tr> | ||
<tr> | ||
<td>STM32-L0</td> | ||
<td>低功耗</td> | ||
<tr> | ||
<td rowspan="3">Cortex-M3</td> | ||
<td>STM32-F1</td> | ||
<td>基础型,主频72MHz</td> | ||
</tr> | ||
<tr> | ||
<td>STM32-F2</td> | ||
<td>高性能</td> | ||
</tr> | ||
<tr> | ||
<td>STM32-L1</td> | ||
<td>低功耗</td> | ||
</tr> | ||
<tr> | ||
<td rowspan="3">Cortex-M4</td> | ||
<td>STM32-F3</td> | ||
<td>混合信号</td> | ||
</tr> | ||
<tr> | ||
<td>STM32-F4</td> | ||
<td>高性能,主频180MHz</td> | ||
</tr> | ||
<tr> | ||
<td>STM32-L4</td> | ||
<td>低功耗</td> | ||
</tr> | ||
<tr> | ||
<td>Cortex-M7</td> | ||
<td>STM32-F7</td> | ||
<td>高性能</td> | ||
</tr> | ||
<tr> | ||
<td rowspan="5">8</td> | ||
<td rowspan="5">6502</td> | ||
</tr> | ||
<tr> | ||
<td>STM8s</td> | ||
<td>标准系列</td> | ||
</tr> | ||
<tr> | ||
<td>STM8AF</td> | ||
<td>标准车载</td> | ||
</tr> | ||
<tr> | ||
<td>STM8AL</td> | ||
<td>低功耗车载</td> | ||
</tr> | ||
<tr> | ||
<td>STM8L</td> | ||
<td>低功耗</td> | ||
</tr> | ||
</table> | ||
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### 2.2 STM32命名方法 |
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