STM32 AD程序程序

基于c语言的单片机控制电机及矩阵键盘控制，适用于单片机初学者(MCU control motor and matrix keyboard)

操作系统的小实验，模拟进程的几种管理方式，先进先出，最短作业优先，等等

atmega16操作Nokia5110 编程语言为iccavr(atmega16 operation Nokia5110 programming language iccavr)

Keystone1 架构的DSP软件开发包，经过实际测试适用于 TI C6678 EVM板 / C6670 EVM板 / C6657 EVM板。 Keystone1 软件开发包(STK) IPC基本例程；C66X指令测试；SRIO例程；Memory测试例程；6670VCP2测试例程；I2C例程；SPI例程；EMIF例程；DualC6457 SRIO通信例程；Keystone_Timer例程；keystone_UART例程；keystone_Navigator例程；EMAC多核boot例子；CCS下使用命令行建立编译工程；在C6678实现VLFFT例程；Keystone_UART中断例程； Hyperlink示例程序；DSP与A15之间的IPC例程； SPI Flash boot demo PA配置发送UDP报文 EVM6657 EMAC-PC通信例程(Keystone1 architecture DSP Software Development Kit, after the actual test applies to TI C6678 EVM board/C6670 EVM board/C6657 EVM board Keystone1 Software Development Kit (STK) KeystoneII DSP Software Development Kit (STK) IPC basic routines C66X instruction test SRIO routines Memory test routines 6670VCP2 test routine I2C routines SPI routines EMIF routine DualC6457 SRIO communication routines Keystone_Timer routines keystone_UART routine keystone_Navigator routine EMAC multicore boot example use the following command line build CCS compiler project achieve VLFFT routines C6678 Keystone_UART interrupt routine Hyperlink sample program IPC routines between the DSP and the A15 SPI Flash boot demo PA configuration send UDP packets EVM6657 EMAC-PC communication routines)

wince 下的C++画图程序，可看一下(C++ drawing program under wince)

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To use the example, fill in the Resource String (by default it is GPIB0::20::INSTR). Select center frequency and frequency span and press Start button to start measurement. Results are shown in table.

STM32作为主控芯片，72Mhz，利用DMA+PWM实现驱动WS2812，创建16个并行800kBit / s数据流的想法如下： 使用定时器每1.25us创建一个800kHz的时基和一个DMA请求。 使用2个比较模块在低位时间（350ns）和高位时间（700ns）下创建DMA请求 1.25us DMA请求将GPIO端口的所有位设置为高电平 350ns DMA请求将数据从帧缓冲区传输到GPIO端口。如果该位为0，GPIO引脚将变为低电平，否则将保持高电平。 700ns DMA请求将所有GPIO引脚设置为低电平。 重复步骤1到3，直到发送所有位。 这产生脉冲周期为1.25us，脉冲宽度为350ns或700ns的脉冲流，具体取决于脉冲表示的位值，通过DMA将数据传输到GPIO端口意味着每16个LED每位需要一个字（两个字节）。每个LED 24位，每16个LED 24个字（48个字节）。(The idea to create 16 parallel 800kBit/s data streams is the following: Use a Timer to create an 800kHz time base and a DMA request every 1.25us. Use 2 compare modules to create DMA requests at the low bit time (350ns) and the high bit time (700ns) The 1.25us DMA request sets all bits of the GPIO port high The 350ns DMA request transfers the data from the frame buffer to the GPIO port. If the bit is a 0, the GPIO pin will go low, otherwise it will stay high. The 700ns DMA request sets all GPIO pins low. Repeat steps 1 to 3 until all bits have been transmitted. This creates a stream of pulses with a pulse period of 1.25us and a pulse width of either 350ns or 700ns depending on the bit value the pulse represents. Transferring the data via DMA to the GPIO port means that per 16 LEDs one half word (two bytes) is needed per bit. At 24 bits per LED that makes 24 half words (48 bytes) per 16 LEDs.)

合众达DEC643开发板程序例程——boot部分(Triangle of DEC643 development board routine- boot part)

3GPPR7无线接入网加密算法性能及应用研究汪青山.rar(3 gppr7 wireless access network encryption algorithm performance and application research)