STM32 F4 GPIO Modes Goal: creating a visual summary of GPIO configuration modes. The summary at the bottom shows the major configuration choices. Basic electrical info: GPIOs can sink or source up to ±8 mA, and sink or source up to ±20 mA (with a rel…

STM32 F4 ADC DMA Temperature Sensor Goal: detecting temperature variations using a temperature sensor, ADC with DMA and TIM3 as a trigger (ADC sampling frequency = TIM3 trigger frequency). Note: Using TIM3 as a trigger is suited for monitoring temper…

本文来自cairang45的博客,讲述了STM32的GPIO口的输出开漏输出和推挽输出, 作者博客:http://blog.ednchina.com/cairang45 本文来自: 高校自动化网(Www.zdh1909.com) 详细出处参考(转载请保留本链接):http://www.zdh1909.com/html/MCS51/2944.html STM32的GPIO口的输出:开漏输出和推挽输出 >>推挽输出:可以输出高,低电平,连接数字器件 >>开漏输出:输出端相当于三极管的集…

转载http://blog.csdn.net/wuwuhuizheyisheng/article/details/8239599 STM32的GPIO总结 作者:JCY 该文是自己学习了一段STM32后所写,是对STM32使用固件库编程最简单的一段程序,是对固件库函数的一部分进行解析.如有错误之处请指正,不胜感激. 一. GPIO_Init函数解析 1 1.参数GPIO_TypeDef 1 2.参数GPIO_InitStruct 2 3.函数代码详解 4 4.备注 6 一.GPIO_Init函数…

输入上拉:当IO口作为输入时,比如按键输入,而按键是与地连接,按下时为低电平,则没按下时该IO口应为高电平,上拉即是该IO口通过一个电阻与电源相连,则没按下时为高电平,按下即为低电平. 输入下拉:同理此时按键与电源相连,按下即为高电平,下拉就是该IO口通过一个电阻与地相连,没按下为低电平,按下为高电平.  推挽输出:作为普通的IO口输出高低电平 STM32的输入输出管脚有下面8种可能的配置:(4输入.2输出.2复用输出) 1.浮空输入_IN_FLOATING 2.带上拉输入_IPU 3.带下拉输…

@2018-5-9 17:11:38 STM32配置GPIO前须先打开其时钟,否则配置失败…

STM32 F4 Clock Sources Goal: routing clock sources to the microcontroller output pin (MCO1)    High-speed internal (HSI) clock is 16MHz High-speed external (HSE) clock is 8MHz (very precise) PLL CLK is configured to be 84MHz because I have a 100MHz o…

STM32 F4 DAC DMA Waveform Generator Goal: generating an arbitrary periodic waveform using a DAC with DMA and TIM6 as a trigger. Agenda: Modeling a waveform in MATLAB and getting the waveform data Studying the DAC, DMA, and TIM6 to see how it can be u…

STM32 F4 General-purpose Timers for Periodic Interrupts…

STM32 F4 SPI Accelerometer…