18b20

通过SPI对W25Q64读写操作,内含定时器，串口，spi等程序(Read and write W25Q64 through SPI)

零死角玩转STM32 初级篇 中级篇 系统篇.zip(Zero Dead Corner Play STM32 Junior Intermediate Systematic Paper.zip)

单片机万历年电子钟Chip electronic bell million years(Chip electronic bell million years)

说明：  LED流水灯和51单片机定时器程序，适合初学者(LED water lamp and 51 single timer program for beginners)

说明：  STC12C5A60S2经典例程.......(STC12C5A60S2 typecal example)

stm32 iic mpu6050 dmp mdk环境(Stm32f429 IIC mpu6050 dmp MDK environment)

AM2301显示温湿度并发送到串口，波特率为9600，可自己改，具体情况具体改进(AM2301Display temperature and humidity and sent to the serial port)

本例展示了如何设置TIM，用它来测量一个外部输入信号的频率和占空比。 TIM2时钟设置为72MHz，预分频设置为0，TIM2计数器时钟可表达为： TIM2 counter clock = TIMxCLK / (Prescaler +1) = 72 MHz，因此可测量的最小频率值为1100Hz。 设置TIM2工作在PWM输入模式（PWM Input Mode），把外部信号作为输入连接到TIM2通道2。 利用TIM2计数器中断来测量信号的频率和占空比。在TIM2_IRQHandler中，计算信号的频率和占空比，方法如下： 变量"Frequency"为由下式得到的外部信号频率： Frequency = TIM2 counter clock / TIM2_CCR2 单位Hz 变量"Duty_Cycle"为由下式得到的外部信号占空比： Duty_Cycle = (TIM2_CCR1*100)/(TIM2_CCR2) 单位 (This example shows how to set up the TIM, and use it to measure the frequency and duty cycle of an external input signal. TIM2 clock set to 72MHz and the prescaler is set to 0, TIM2 is counter clock can be expressed as: TIM2 is counter clock = TIMxCLK/(prescaler. Ppls1) = 72 MHz, the minimum measurable frequency value of 1100 Hz. Set TIM2 PWM input mode (PWM Input Mode), the external signal as an input connected to the the TIM2 Channel 2. TIM2 counter interrupt signal to measure frequency and duty cycle. Calculate the frequency and duty cycle of the signal in TIM2_IRQHandler as follows: variable " Frequency" on the grounds of the external signal frequency by the following formula: Frequency = TIM2 is counter clock/TIM2_CCR2 unit Hz variable Duty_Cycle " on the grounds of the following formula to get external duty cycle: Duty_Cycle = (TIM2_CCR1* 100)/(TIM2_CCR2) in )

说明：  设计一个基于单片机的嵌入式系统，要求具备以下功能: 红外数据的接收及解码,红外发色电路 数码管的显示驱动控制 将接收到的红外数据进行实时显示(限于动态扫描方法) 请根据以上功能要求，进行硬件系统设计,编写软件程序并画出流程图。 信号波形解码显示都没问题，LED灯和蜂鸣器设计是有点问题的，可以删掉不用不影响。自动使用的是压缩包里第二个文件的程序，其他包里有额外的参考资料，可借鉴。(To design an embedded system based on MCU, the following functions are required: Infrared data receiving and decoding, infrared color circuit Display drive control of digital tube Real time display of received infrared data (limited to dynamic scanning method) According to the above functional requirements, design the hardware system, write the software program and draw the flow chart. Signal waveform decoding display is OK, LED lights and buzzer design is a bit of a problem, can be deleted without affecting. Automatic use of the second file in the compressed package of the program, other packages have additional reference materials, can be used for reference.)

风驰的stm8开发板例程 (program For STm8 )