The use of the Wind River VxWorks Real-Time Operating System (RTOS) on Virtex™-4embedded PowerPC™ processors continues to be a popular choice for high performanceFPGA designs. The introduction of the Wind River Workbench design environment has enableda new and easier way for designers to control the configuration of the VxWorks kernel. Thisguide shows the steps required to build and configure a ML403 Embedded DevelopmentPlatform to boot and run the VxWorks RTOS. A VxWorks bootloader is created, programmedinto Flash, and used to boot the design. The concepts presented here can be scaled to anyPowerPC enabled development platform.
This book introduces embedded systems to C and C++ programmers. Topics include testing memory devices, writing and erasing Flash memory, verifying nonvolatile memory contents, controlling on-chip peripherals, device driver design and implementation, optimizing embedded code for size and speed, and making the most of C++ without a performance penalty. Pages : 336 Slots : 1
yright 2002 Cygnal Integrated Products, Inc. // // Filename: LIION_BC_MAIN.c // Target Device: 8051F300 // Created: 11 SEP 2002 // Created By: DKC // Tool chain: KEIL Eval C51 // // This is a stand alone battery charger for a Lithium ION battery. // It utilizes a buck converter, controlled by the on-chip 8-bit PWM, // to provide constant current followed by constant voltage battery charge.
C++完美演繹 經典算法 如 /* 頭文件：my_Include.h */ #include <stdio.h> /* 展開C語言的內建函數指令 */ #define PI 3.1415926 /* 宏常量，在稍后章節再詳解 */ #define circle(radius) (PI*radius*radius) /* 宏函數，圓的面積 */ /* 將比較數值大小的函數寫在自編include文件內 */ int show_big_or_small (int a,int b,int c) { int tmp if (a>b) { tmp = a a = b b = tmp } if (b>c) { tmp = b b = c c = tmp } if (a>b) { tmp = a a = b b = tmp } printf("由小至大排序之后的結果:%d %d %d\n", a, b, c) } 程序執行結果： 由小至大排序之后的結果:1 2 3 可將內建函數的include文件展開在自編的include文件中 圓圈的面積是=201.0619264
用LPC213X系列的PWM來產生語音。語音數據來源于PC機轉換后得到的。最大可以是16位的。
由于是PWM所以輸出端口需要低通濾波才能夠得到比較干凈的聲音。
可以經過修改使用LPC2132以上的ARM的D/A來產生。
This project outputs audio on PWM0 using wave samples that are stored in the on-chip Flash ROM.
This project is created using the Keil ARM CA Compiler.
The Logic Analyzer built into the simulator may be used to monitor and display any variable or peripheral I/O register. It is already configured to show the PWM output signal on PORT3.0 and PORT3.1
This ARM Example may be debugged using only the uVision Simulator and your PC--no additional hardware or evaluation boards are required. The Simulator provides cycle-accurate simulation of all on-chip peripherals of the ADuC7000 device series.
You may create various input signals like digital pulses, sine waves, sawtooth waves, and square waves using signal functions which you write in C. Signal functions run in the background in the simulator within timing constraints you configure. In this example, several signal functions are defined in the included Startup_SIM.INI file.
This program prints the C8051F124 die temperature out the hardware UART at 115200bps. This example uses the internal 24.5MHz oscillator multiplied by 2 using the on-chip PLL (SYSCLK = 49MHz).
