sae2003_microstep-vs-fullstep

空调压缩机变频控制算法，与直流无刷永磁电机相关，与节能相关。(PWM control algorithm of air-conditioner s condenser )

该程序实现 adc对双轴传感器的X轴Y轴电压的采集，并用不同的标志位代表双轴传感器不同位置时的电压，利用SPI协议将采集到的数据传递给NRF24L01模块，利用NRF24L01模块将数据发送给下位机，实现与下位机之间的通信。(The program realizes the acquisition of the Y axis voltage of the X axis of the dual axis sensor by ADC, and uses the different symbol bits to represent the voltage at different positions of the dual axis sensor. The data is transmitted to the NRF24L01 module by the SPI protocol, and the data is sent to the lower machine by the NRF24L01 module to realize the communication with the lower computer.)

说明：  AD7799 AD转换芯片，电压采集驱动程序。(AD7799 AD conversion chip, voltage acquisition driver.)

74HC595+LED显示程序,好东西(74HC595+ LED display program, good things)

There are no module parameters for this driver and it can be configured.

– 133 条指令 – 大多数可以在一个时钟周期内完成 　　– 32 x 8 通用工作寄存器 + 外设控制寄存器 　　– 全静态工作 　　– 工作于16 MHz 时性能高达16 MIPS 　　– 只需两个时钟周期的硬件乘法器(--133 Instruction- most can be completed in one cycle- 32 x 8 General Purpose Working Registers+ Peripheral Control Registers- Fully Static Operation- Work performance at 16 MHz up to 16 MIPS- only two clock cycle hardware multiply device)

说明：  MAX7221控制数码管动态显示的单片机C语言源程序，对初学者很有帮助(The MAX7221 Control single-chip digital control dynamic display C language source code, useful for beginners)

RS485通信的源代码，可进行两个系统之间信号的传递，介绍其编程规则(RS485 communications source code, can be passed between the two signal systems, introduces its programming rules)

代码转换程序之把十六进制数转换为ASCII码(The hexadecimal system transformation is the ASCII code)

基于单片机的点阵屏，595 Z字移位，1/4扫描。(Microcontroller-based dot-matrix screen, 595 Z character displacement, 1/4 scan.)