52mtv

用C语言实现matlab的butter函数中低通和带通功能,高通和带阻没写,有兴趣的可以自己加入.(Using C language to achieve matlab butter function low-pass and band-pass function, high pass and band stop did not write)

51单片机控制的仓库测温系统。主机为单片机，从机为分布在现场的单片机，DS18B20测温，1602显示，并通过485总线通信。(51 temperature measurement system with microprocessor controlled warehouse. Host microcontroller, the slave is distributed in the field of single-chip, DS18B20 temperature measurement, 1602, and through the 485 bus communication.)

c51单片机的sle4442卡的读写加密验证程序 已通过(c51 microcontroller sle4442 card reader encrypted authentication procedure has been adopted)

说明：  用4*4矩阵键盘给液晶1602送四位数，其中第四行按键设置为功能键，按键显示可调对应位的数字(With 4* 4 matrix keyboard to send the four-digit LCD 1602, the fourth line of buttons is set to function keys, adjustable button displays the corresponding number of bits)

一维数组实现01背包问题和完全背包问题的C语言解，注释清楚(C Language Annotation of 01 Knapsack Problem and Complete Knapsack Problem for One-Dimensional Array with Clear Annotations)

说明：  autosar源码，示例程序，arcstudio(autosar source code arcstudio)

笙科芯片A7139的SPI无线模块驱动程序例程。(Sheng Branch of SPI chip A7139 wireless module driver routines)

本设计主要实现用按键控制步进电机四相单拍、四相双拍和四相八拍三种方式切换， 正、反转及其加、减速，并能在LCD上显示其运行状态（速度和转向）。(The design of the main keys to achieve control of stepper motor with a single shot four-phase, four-phase two-and four-phase eight-shot shoot three ways to switch Positive, reverse its acceleration, deceleration, and in its operational status on the LCD display (speed and steering).)

stm32f4 adc 的代码，双通道，用DMA保存数据。(stm32f4 family c code, adc This example provides a short description of how to use the ADC peripheral to convert a regular channel in Dual interleaved mode using DMA in mode 3 with 5Msps. DMA mode 3 is used in interleaved mode in 6-bit and 8-bit resolutions. The Dual interleaved delay is configured 6 ADC clk cycles. On each DMA request (two data items are available) two bytes representing two ADC-converted data items are transferred as a half word. The data transfer order is similar to that of the DMA mode 2. A DMA request is generated each time 2 data items are available 1st request: ADC_CDR[15:0] = (ADC2_DR[7:0] << 8) | ADC1_DR[7:0] 2nd request: ADC_CDR[15:0] = (ADC2_DR[7:0] << 8) | ADC1_DR[7:0] The ADC1 and ADC2 are configured to convert ADC Channel 12, with conversion triggered by software. By this way, ADC channel 12 is converted each 6 cycles. In this example, the system clock is 168MHz, APB2 =84MHz and ADC clock = APB2 /2. Since ADCCLK=)

基于atmega16的步进电机驱动程序，实现正反转及调速等功能。(Based atmega16 stepper motor driver, and achieve positive and speed functions.)