EM78P447_WDT_wakeup

本系统基于反馈控制思想，由交直流转换电路、DC-DC变换器、步进电路模块和显示模块4个模块电路构成开关稳压电源。交直流转换电路整流部分采用全波桥式整流电路形式，DC-DC变换器以TL494有主核心设计并加上简单滤波电路及RC放电回路所构成的回路控制器。它能把脉冲宽度变化的信号转换成与脉冲宽度成正比变化的直流信号，进而实现闭环单回路控制。由单片机控制 数字定位器X9241的电阻,进而控制输出电压。显示模块由LCD1602构成。 (Based on feedback control of the system of thought, from AC-DC converter circuit, DC-DC converters, stepper circuit module and display module 4 module circuit switching power supply. AC-DC converter circuit using full-wave rectifier part of the circuit form of bridge rectifier, DC-DC converter to TL494 have the main core of the design and add a simple RC filter circuit and discharge circuit posed by the loop controller. It can change the pulse width signals into changes with the pulse width is proportional to the DC signal, and thus realize the closed-loop single-loop control. By the single-chip microcomputer to control the number of locator X9241 resistance, thereby control the output voltage. LCD1602 constituted by the display module.)

说明：  3231132213213132312311233312321(32312312132321321312312132)

称重模块，oled显示重量，RTC时钟显示时间，矩阵按键修改时间(Weighing module, OLED display)

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.)

stm32 上 lin通信示例代码，自己已测试过，收发正常，在汽车行业用到(STM32 Lin communication example code, they have been tested, send and receive normal, used in the automotive industry)

说明：  最全面的18b20中文参考手册，是目前最全面的，包含了18b20的所有资料(The most comprehensive 18B20 Chinese reference manual is the most comprehensive one at present, which contains all the materials of 18b20)

51单片机考勤系统下位机程序，可以配合上位机软件实现考勤功能，将hex文件下载到51单片机即可使用(51 MCU control procedures can be achieved with the PC software attendance function, the hex file into the microcontroller 51 can be used)

MSPf5529LCD1602显示，初学小实验。(MSPf5529LCD1602 shows that the primary school experiment.)

NANFLASH读写程序,keil开发环境。(NANFLASH read and write procedures, keil development environment.)

整车操稳方向盘转角脉冲横摆角速度增益数据处理程序，可以根据仿真结果自动计算增益，并且可以自动生成ADAMS软件的随即路面(Vehicle operation stability of steering wheel angle pulse yaw velocity gain data processing program, can automatically calculate the gain according to the simulation results, and can automatically generate ADAMS software then pavement)