51单片机程序设计数字电压表

为了避免复杂的三角函数和求根运算，便于数字信号处理器的实时运算，提出一种新 的SVPWM算法。采用SPWM中调制波与载波相比较的规则采样思路，通过在静止坐标系下直接 计算每个参考电压矢量所对应的三相调制波的函数值，进而得到每相电压在一个PWM周期中的 占空比．该算法的主要特点是计算简单，只需要普通的四则运算，适用于数字化系统。在扇区划 分和占空比饱和的处理上较传统SVPWM算法更简便，且过调制范围也略有拓展，具有很大的实 用性。仿真和实验结果证实了该算法的有效性。(In order to avoid complex trigonometric and root operation, ease of operation, real-time digital signal processor, propose a new SVPWM algorithm. Using SPWM modulation wave in comparison with the carrier' s regular sampling ideas, through the stationary coordinate system directly calculated for each reference voltage vector corresponding to the phase modulation wave function value, and then get each phase voltage in a PWM period accounted for air ratio. The main features of the algorithm is to calculate simple and requires only ordinary arithmetic for digital systems. Saturation in the sector division and duty cycle of the treatment more convenient than traditional SVPWM algorithm, and also a slight over-modulation range expansion, with great practicality. Simulation and experimental results confirm the effectiveness of the algorithm.)

DSP2812 PWM生成配置程序，主要包括死区配置，此代码已经成功调试过(DSP2812 PWM generator configuration program, including the dead zone configuration, this code has been successfully tested over)

说明：  基于select的多线程并发服务器，可用作基础服务器框架(Multithread concurrent server)

symbian 一个简单的文本阅读器，适合查看手机之中的txt文本。(Symbian a simple text reader, suitable for view of mobile phone of TXT text. )

通过操作寄存器的方式对STM32的寄存器完成对四路通道的PWM进行输出，完成了对函数的封装，可在同平台上移植

雷达数据显示与分析，包括雷达P显和E显两种方式，同时还可设置雷达量程、指定目标航迹数据显示等，该代码实用，值得参考。(Radar data and analysis, including radar and E P were significantly in two ways, but can also set the radar range, specify the target track data display, the code useful as reference.)

《五子连珠》该游戏是在凌阳单片机上开发的一款益智类游戏，游戏过程中会随机产生三个随机颜色的子在棋盘上，玩家要不断的移动棋盘内的子，只要在横竖或者斜方向上有5个以上相同颜色的子，这一方向上的棋子就会消掉，玩家要想不会输，就要想办法把产生的棋子消掉。(" Five or" the game is on the Sunplus development of a puzzle game, the game will randomly generate three random colors on the board of the child, the child must continue to move the player inside the board, as long as if they had there five or more sub oblique direction of the same color, the pieces in this direction will disappear, the player does not want to lose, and finding ways to eliminate the pieces produced.)

基于ADI公司的DDS芯片AD9850的数字信号发生器源程序(ADI AD9850 DDS chip-based digital signal generator source)

将射频卡放在天线有效范围内，指定读/写地址，点击<读卡>，系统对该卡进行连续的读/写操作，直至用户点取<断开连接>按钮为止。同时将每个操作步骤调用的函数、操作结果及读出/写入的数据显示在列表框中。(The radio frequency card is placed in the effective range of the antenna, the read / write address is specified, the read card is clicked, and the system can read / write the card continuously until the user points out the disconnect connection. At the same time, the function, operation result and read / write data of each operation step are displayed in the list box.)

说明：  瑞萨R5F1000FG 串口，LCD显示(Risa R5F1000FG Serial Port, LCD Display)