timer

说明：  摄像头OV7670模块调试资料，硬件参考电路、51、STM32源码。(Camera OV7670 module debugging data, hardware reference circuit, 51, STM32 source code.)

超声波液面测距，已经编译成功，可以直接使用。(Ultrasonic ullage, has compiled successfully, can be used directly.)

本设计是以单片机为控制核心，通过液晶实时显示时钟，并通过LM35D传感器测量温度，将温度值实时显示在液晶上。(The design is based on microcontroller core, real-time via the LCD display clock, and through LM35D sensors measure temperature, the temperature values ​ ​ displayed in real time on the LCD.)

AD_DA_PCF8591 stc 51单片机 工程文件 说明(AD DA PCF8591 STC 51 SCM project files illustrate)

基于STM32F103利用SPI协议，RC522多功能读取，修改，删除卡片(Based on STM32F103 and SPI protocol, RC522 can read, modify and delete cards with multiple functions.)

UDP with an aim to send/receive packets using 8051 microcontroller

stm32控制ad7606实现模数转换 spi(stm32 control ad7606 analog-to-digital conversion spi)

转子系统临界转速的计算，是一个德国人开发的软件，很强大！(rotor modal analysis)

用PIC实现写种子工具,用232协议转换SPI协议实现.(Write-seed with PIC tools, protocol conversion with 232 SPI protocol.)

$regfile = M8DEF.dat internal crystal 8000000 Config Lcdpin = Pin , Db4 = Portc.1 , Db5 = Portc.2 , Db6 = Portc.3 , Db7 = _ Portc.4 , E = Portd.2 , Rs = Portd.3 Config Lcd = 16 * 2 Config Timer1 = Counter , Edge = Rising Ddrb.1 = 0 : Portb.1 = 1 PULL UP RESISTOR ACTIVATED Config Timer0 = Timer , Prescale = 1024 Enable Counter1 Enable Interrupts Enable Timer0 Enable Timer1 On Ovf1 Pulsecount On Ovf0 Ovf0occures Dim A As Long , I As Long , B As Byte B = 0 Cls Start Timer0 Do Loop End end program Ovf0occures: Incr I If I > 30 Then Stop Timer0 Cls : Home A = B * 65536 A = A + Counter1 Lcd FREQ IS : A HZ B = 0 I = 0 : Counter1 = 0 Start Timer0 End If Return Pulsecount: Incr B Counter1 = 0 Return