Vehicle-Charging-Station

心率采样电路，包括原理图，PCB单路及相关说明(Heart rate sampling circuit, including schematic, PCB single)

实时闹钟.1、STM32的实时时钟（RTC）是一个独立的定时器！ 2、RTC模块和时钟配置系统（RCC_BDCR寄存器）是在后备区域，即在系统复位火从待机模式唤醒后RTC的设置和时间维持不变。 RTC这章中，对RTC相关的寄存器的操作特别重要，(RTC Alarm real-time clock timer; keyer; intervalometer; timing device clock; timepiece allocation; configure; collocation; deploy register; tell-table; temporary storage reserve; in support system resetstandby mode awaken; awakening; arouse; rouse; wake up stand)

说明：  一个按键的多次击键组合判别技巧 有时在设计中，往往要用一个按键来输入多种信息。如：单击/双击/三击、短击/长击、 还有各种组合击键方式。可以用以下程序来做。 如果按键闭合时间判断为一次短击 如果按键闭合时间判断为一次长击(A button multiple keystroke combinations sometimes Discriminant skills in design, often using a button to enter a wide range of information. Such as: click/double/triple-clicking, hit a short/long shot, there are various combinations of keystrokes way. The following procedures can be used to do. If the button closure for a short time to judge the hit to determine if the button closure for a long time to hit)

pid control datasheet to describe algo

stm32f4串口通信,STM32F4与STM32F1在ADC方面的区别(stm32f4 usart)

说明：  跑马灯是一种电脑编程工具，利用涂鸦等效果显示文字。电脑中的跑马灯，跑马灯在编程中，通常指有时需要用一矩形条显示少量用户特别关心的信息，这条信息串首尾相连，向一个方向循环滚动。(The marquee is a computer programming tool that uses text such as graffiti to display text. In the computer, the marquee and the marquee are usually programmed to display a small amount of information that the user is particularly concerned with. This string of information is connected end to end and scrolls in one direction.)

An exception that indicates that garbage-collector is finalizing a database object that is not explicitly closed.

C8051F310 IO按键指示灯驱动程序

说明：  ，用来控制带i2c的风扇板及读写e2prom都没问题，但是用来进行两个AVR单片机之间的通信时，有时会出现数据发送和接收错误（单片机AT1281的TWI引脚连接到i2c缓冲器PCA9513上，通信是在ATCA六槽机箱中进行，但是只用了两个槽位，其他的悬空(That is used to control with the i2c fan board and literacy e2prom all right, but used for two AVR of communication between the microcontroller, can appear sometimes sending and receiving data error (SCM AT1281 of TWI pin connected to the i2c buffer PCA9513, communication is in ATCA six slot chassis, but only two slots, other suspended)

UC1603液晶控制器测试程序，实现液晶显示与基本功能测试(UC1603 LCD controller test program, LCD and test the basic functions)