att7026

cc2540的adc使用方法，使用源码，协议栈开发部分实现(adc of cc2540 ble source code)

基于51单片机的24c16驱动程序，用C语言编写，可以用于24c16的读写操作源码。 (Based on 51 microcontroller 24c16 driver, with the C language can be used to read and write operations 24c16 source.)

说明：  VB串口通讯实例 高精度电压表(24bit) VB源程序(VB serial communication example high precision voltage meter (24bit) VB source code)

说明：  msp430单片机的毫伏表程序，四位数码管显示(msp430 microcontroller millivoltmeter program, four digital tube display)

于市售 STM32 开发板上实现特定人语音识别处理项目。识别流程是：预滤波、ADC、分帧、端点检测、预加重、加窗、特征提取、特征匹配。端点检测(VAD)采用短时幅度和短时过零率相结合。检测出有效语音后，根据人耳听觉感知特性,计算每帧语音的 Mel 频率倒谱系数(MFCC)。然后采用动态时间弯折(DTW)算法与特征模板相匹配,最终输出识别结果。先用Matlab对上述算法进行仿真，经数次试验求得算法内所需各系数的最优值。而后将算法移植到 STM32 开发板上，移植过程中根据 STM32 上存储空间相对较小、计算能力也相对较弱的实际情况，对算法进行优化。最终完成于 STM32 微处理器上的特定人语音识别系统。(Implement speech recognition processing project in commercially available STM32 development board. Identification is the process: pre-filter, ADC, framing, endpoint detection, pre-emphasis, windowing, feature extraction, feature matching. Endpoint detection (VAD) short-time amplitude and short-term zero rate combined. After detecting an effective voice, according to the characteristics of human auditory perception, calculated for each frame of speech Mel Frequency Cepstral Coefficients (MFCC). Then dynamic time warping (DTW) algorithm and feature template matches the final output recognition result. First with Matlab simulation algorithm described above, after several trials to get the optimal value of each coefficient within the desired algorithm. The algorithm will migrate to STM32 development board, the porting process according to the STM32 relatively small storage space, computing power is relatively weak situation of the optimization algorithm. Finally completed on the STM32 micr)

闻亭TDS2407EA开发板的程序，采用通用定时器产生两路同频的PWM波形，重点调试的两路的相位差，也可以分别调整周期和占空比(Wintech TDS2407EA development board' s procedures, the use of two general purpose timers have the same frequency of the PWM waveform, the focus of debugging phase two, you can adjust the cycle and duty cycle, respectively,)

无刷电机驱动程序 霍尔传感器 PID算法调节(Brushless Motor Driver Hall sensor PID algorithm)

利用MSP430单片机实现5分钟倒计时。用Timer_A实现1s定时，4位共阳型数码管显示时间，显示格式为：“x-xx”，分别代表“分”、“十秒”和“秒”。每隔1s，倒计时器的时间减1，倒计时从4分59秒开始计时，至0分0秒结束，停止计时。(MSP430 microcontroller is used to realize 5 minute countdown. Timer_A is used to realize 1s timing and 4-bit common-sun digital tube display time. The display format is "x-x x", representing "minutes", "ten seconds" and "seconds" respectively. Every 1s, the countdown time is reduced by 1. The countdown time starts at 4:59 seconds and ends at 0:0 seconds.)

说明：  MPU6050通过STM32F429发送数据到上位机。或是通过显示屏显示。(MPU6050 sends data to PC through STM32F429. Or display it on a screen.)

说明：  osg中的switch开关功能，可以显示场景中想要看到的节点。(osgswitch)