. OBFUSCATOR-LLVM (OLLVM) is a code obfuscation tool developed by the Northwestern University of Applied Sciences Security Laboratory for LLVM compiled components, which is fully open source to increase the difficulty of reverse engineering and ensure the security of the code. OBFUSCATOR-LLVM (OLLVM) integrates compilers and is compatible with all languages supported by LLVM (c,c++, Objective-c, Ada and Fortran) and platforms (x86, x86-64, PowerPC, PowerPC-64 , ARM, Thumb, SPARC, Alpha, CELLSPU
update source solves this problem as below:
deb http://tinyos.stanford.edu/tinyos/dists/ubuntu hardy main
deb http://hinrg.cs.jhu.edu/tinyos oneiric main
2) update the knowledge base, open the terminal, and enter
Sudo apt-Get update
3) install tinyos
Sudo apt-Get install tinyos
Prompt for the optional tinyos version. Select the latest version 2.1.1.
Sudo apt-Get install tinyos-2.1.1
4) set Environment Variables
In ~ /. Bashrc or ~ /. Add the following code to the profile:
# Sourcing the tinyos
cannot apply after use.
Note: There are a lot of MSP430 in our lab. I still feel very good when I apply for Ti samples.
3. microchip, the speed is very slow, sometimes you have to go to the agent to get it. You can apply. There are not many sample types.
4. Maxim, needless to say, is recognized as the easiest way to apply for, that is, delivery speed is slow, Normal packages, Beijing delivery.
5. intersil: the speed is average and there are n
have time to get angry, I don't have time to be unhappy, and my technology is still poor. But I believe that after a while, I can be an exquisite electronic engineer with excellent technology and exquisite life.Thank you for reading this article.
Appendix 1: My long-term embedded technology learning plan:1. MCU classification: four-digit machine, 51, PIC, *** R, and MSP430 Series for learning;2. hardware knowledge: components, PCB wiring, classic cir
Nanjing Embedded Professional Skills Training Co., Ltd., founded in 2006, the registered capital of 5 million yuan. Developed to this day, has become a set of embedded engineers training, high-end software development talent practice, software technology development, IT consulting services in one of the high-tech enterprises.Over the past 10 years, China embedded education has always focused on developing and transporting high-quality software talents for the high-speed development of the Yangtz
The original project was to use the MSP430 single-chip microcomputer. one end of the key was connected to the single-chip microcomputer's IO port, and the other end was directly connected to GND. When no key is pressed, the IO port reads a High Level. when the key is pressed, the IO port reads a low level.
The EFM32 single-chip microcomputer is still the same as the key circuit. During the test, it was found that when several buttons are pressed, the
data sending and receiving. ATmegal28L exchange data and send commands with CC2420 through the CC2420 SPI interface (CSn, SO, SI, SCK), reset the chip using the RSTn pin, and enable the CC2420 voltage regulator using the VREG_EN pin, make it generate the 1.8 V voltage required by CC2420, so that CC2420 enters the normal working state. CC2420 communicates with each other through a single pole antenna or PCB antenna. Figure 4 shows the overall node architecture.
4 transplantation of zigBee proto
: CoAP and IOT system return JSON)CoAP Server code
Server-side code is relatively simple. Let's take a look.
if (req.headers['Accept'] == 'application/json') { parse_url(req.url, function(result){ res.end(result); }); res.code = '2.05'; }
Whether the request is in JSON format, and then returns a 205, that is, Content, which is designed to request a URL to return the corresponding data. For example
coap://localhost/id/1/
In this case, the request is for dat
1. The definition word is determined based on the characteristics of the processor.First, arm is a 32-bit processor, so its word is 32-bit. A half word is naturally 16bit;Bytes are 8bit regardless of the CPU.If on MSP430, because it is a 16-bit processor, its word is 16-bit. Half word = byte = 8bit.
2.One word: How many machines are exactly the number of digits, 32-bit machines -- 32-bit, 16-bit machines -- 16-bit (the CPU processes the data processi
-source terminal will not automatically clear the flag bit6, in addition to SCG0, the other bits of SR are initialized, allowing the microcontroller to enter the active mode from a low power mode.7, the interrupt vector into the PC, into the Interrupt service sub-program④ Interrupt return processWhen RETI1. SR Out Stack2, PC out of the stack⑤C430 Interrupt Service subroutine writing format#pragma vector= interrupt vector vector__interrupt void function name (void){...}2.
In view of the current situation of GPS system for U.S. military control, the UAV status monitoring system based on "Beidou" Satellite navigation system and wireless digital radio station, which has the ability of regional navigation and positioning in China, is studied. The system takes the MSP430 series processor as the control unit, uses the UM220 "Beidou" navigation receiver to obtain the status information of the UAV, transmits the airborne infor
technologies will further advance wins's larger-scale applications.The TELOSB full name is Rev. Crossbow (KOESBO) Company Telos series node. B. In a wireless sensor network, each entity element is called a sensor node. TELOSB is one of the nodes. As shown in the image on the right, the node size is about the U disk size, above the circuit board, below the battery slot. The specific parameters are as follows:TELOSB
Technical origins
University of California, Berkeley
Whether it is MIPS, Nios II, Microblaze, MSP430, 8051, OpenRISC, OpenSPARC, leon2/leon3, etc. soft core processor, When implemented on an FPGA, we typically need a portion of the on-chip RAM storage bootloader, which can be used with GCC objcopy to bootloader text, exception vector, rodata, data or BSS and so on you need to copy out, you can generate binary files through-o binary, you can use-J. Section to extract the section you want, of course, you
This article references: http://blog.csdn.net/xukai871105/article/details/92041011. Basic Concepts1) Instant Contikit Ubuntu Contiki Linux installation package 2) SDCC 8051 C Cross Compiler2. Install Instant Contiki2.1 Downloads Instant Contiki"contiki-2.6/contiki-2.7"file size is about 2.0G, after decompression is about 5.0G, please download the hard disk space before preparing. 2.2 Installing VMware PlayerVMWare player is free software and can be used with confidence. 2.3. Enter Instant Conti
through the 90,183-pole multistage amplification with LMC567 demodulation.Multi-node information receive is realized through STM32 programming, and relay is used CSMA.FSK uses NE564 for modulation and demodulation.Infrared communication.The DDS chip AD9851 is used to make the following 40MHz frequency synthesizer.mc145162+mc1648 phase-locked loop, combined with loop filter, can produce 30~50mhz stable frequency signal.mc145152+mc1648+mc12017 phase-locked loop can generate 84~140mhz stable frequ
We learn MCS51 single-chip microcomputer and AVR MCU, or PIC microcontroller, or MSP430 MCU, whether it feels that he can become an engineer? I'm here to say what I think.We learn these single-chip computer, the first study of theoretical knowledge, this is generally the theoretical knowledge of books, such as the introduction of the development of single-chip microcomputer, the application of single-chip microcomputer, the principle of single-chip mi
Someone has asked this question:"With the serial port interrupt reception is better understood, as long as the receiving cache receives the data, the flag bit will be placed, and then enter the interrupt service program to read the data in the receiving cache, but in the sending, should be sent after the data sent out after the flag bit will be set (I am the msp430 microcontroller), So what's the point of breaking into an interrupt when the data is se
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