VSP100-old

51单片机SCMrtoss源代码，非常好用的能够移植 (51 the microcontroller SCMrtoss source code, very useful to be able to transplant)

modbus通信程序,可用组态软件的驱动程序开发(modbus communication program, available configuration software driver development)

这是基于单片机的计算器程序，可以实现加减乘除的功能(This is based on single-chip calculator program, Math functions can be achieved)

超再生遥控-遥控步进电机正反转AB的程序(Superregeneration Remote- remote control stepper motor program AB)

读取ssdt函数当前地址，详见源码中、。。。。(Ssdt function reads the current address, see the source code. . . .)

步进电机是将电脉冲信号转变为角位移或线位移的开环控制电机，是现代数字程序控制系统中的主要执行元件，应用极为广泛。。在非超载的情况下，电机的转速、停止的位置只取决于脉冲信号的频率和脉冲数，而不受负载变化的影响，当步进驱动器接收到一个脉冲信号，它就驱动步进电机按设定的方向转动一个固定的角度，称为“步距角”，它的旋转是以固定的角度一步一步运行的。可以通过控制脉冲个数来控制角位移量，从而达到准确定位的目的；同时可以通过控制脉冲频率来控制电机转动的速度和加速度，从而达到调速的目的。(Stepper motor is an open loop control motor which transforms electrical pulse signal into angular displacement or linear displacement. It is the main executive element in modern digital control system, and is widely applied. In the case of non overloaded, the motor speed and stop position depends only on the pulse frequency and pulse number, regardless of load changes, when the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle, called "step", it is the rotation of the fixed point of the operation step by step. We can control the angular displacement by controlling the number of pulses, so as to achieve the goal of accurate positioning. At the same time, we can control the speed and acceleration of motor rotation by controlling the pulse frequency, so as to achieve the purpose of speed regulation.)

说明：  通过读出SD卡中320x240像素、16位BMP图片的HEX数据，依次写到屏上，还原图片(Read SD card in 320x240 pixels, 16 BMP picture HEX data, in turn written to the screen to restore the picture)

用C语言对LED灯进行测试 通过实际按下键盘进行测试笔(the test of LED with C language and the keyboard is a necessity )

基于单片机的数控开关电源设计，带仿真和详细程序。(NC-based single-chip switching power supply design, with simulation and detailed procedures.)

说明：  51单片机用1602液晶显示串口接收到的数据(51 1602 MCU with LCD serial data received)