Reprint website: http://blog.sina.com.cn/s/blog_7dbd9c0e01018e4l.htmlRecently engaged in a block of St's CORTEX-M4 processor, and then down this document. Share a bit.In view of the current into the public vision of M0, M3, M4 made the following simple comparison, the content from arm and other official website, here is just finishing the next, looks more intuitive point, hehe.The CORTEX-M series is optimiz
byte in length, many other commands are 2 or 3 bytes in length. This is usually the case for a 16-bit architecture, where some commands may occupy 6 bytes or more memory.ARM Cortex-M3 and Cortex-M0 processor leverages ARM Thumb-2 technology that provides excellent code density. With Thumb-2 technology, the Cortex-M processor can support the fundamental foundatio
a problem with the forced conversion here !!!!
BlueDemoHead * bledemohead = (BlueDemoHead *) recvDatPush-> data. data;
........................
// The reason is that the unpackage function actually points recvDatPush-> data. data to the valid data section.
// That is, an offset pointing to the parameter data of mpbledemo2_data_consume_func
// Starting from this offset to recvDatPush-> data. len is the valid data (blueDemoHead + LOAD // data)
// The following code may be faulty, because recvDatP
"MCU new trend-cortex M0/M3/M4 Industry Application Theme Seminar" and "embedded and Internet of Things" theme forum in the second phase of the inlay Association
CORTEX-M series processors are developed for the embedded control market that requires low power and high performance, and the CORTEX-M3 is currently the flagship of this series of processors, with performance up to 1.25dmips/mhz The CORTEX-M0 is t
China Southern Airlines has been learning for two weeks, from the beginning of contact with the cortex-M0 of The New Tang Dynasty to the present, it has a certain understanding of its overall architecture, but still insufficient, let's take a note of your experiences and share them with you!
This project is an infrared module, that is, capturing, decoding, and transmitting infrared signals. Let the Development Board learn infrared signals! The world
485 to control sending and receiving)
After solving these two problems, communication in 485 is basically smooth, but it may be very void. The following is a 485 circuit diagram and the register version code initialized in 485, hope to help everyone, just the code of the New Tang Cortex-M0, if not this chip can look at the steps, it should be no big problem.
For example, the circuit diagram of rs85 communication:
The following is the code:
#def
@20150216 The first contact with asymmetric dual-core MCU, due to a lot of knowledge unfamiliar, these three days encountered a lot of problems. Now finally the event driven on the M0 nuclear run up, send a brief introduction of this event-driven architecture and the 5410x chip learning from these days.With regard to the event-driven architecture, it is mainly used for low power design and can easily enter sleep mode. General single-chip microcomputer
Source: Xxtea encryption and decryption algorithm based on new Tang M0 source code/*--------------------------------------------------------------------------------- ------------------------in the field of data encryption and decryption, the algorithm is divided into two kinds: symmetric key and asymmetric key. Symmetric and asymmetric keys are different in the field of application due to their respective characteristics. Symmetric key encryption a
external capture conditions */Lpc_tmr32b0-> CCR = (0x1 /* Set the third value of the external matching register */Lpc_tmr32b0-> MCR = 3;/* Enable timer interruption */Nvic_enableirq (timer_32_0_irqn );
2. Initialization for PWM output:
Lpc_syscon-> sysahbclkctrl | = (1
/* Set the pins of the external matching register 0. */Lpc_iocon-> r_pio1_1 = ~ 0x07;Lpc_iocon-> r_pio1_1 | = 0x03;/* timer1_32 mat0 *//* Set the third pin of the external matching register. */Lpc_iocon-> pio1_4 = ~ 0x07;L
About ARDUINOPWM pin Frequency control output
Board: Arduino M0 Pro Zero
Use Tone (pin_led_13, 1000); /* Change Current PIN frequency */
Use Analogwrite (pin_led_13, 200);/* Output PWM waveform */
The principle is that the tone function changes the Prescaler value of the clock domain, causing the PWM output waveform frequency to change
Minor adjustments can change the count upper value in the Analogwrite function prototype
Under the X:\XXX\ARDUINO\
If you only know the concept of CPU, then it is impossible to understand the CPU topology. In fact, in the NUMA architecture, the concept of CPU is from big to small: Node, Socket, Core, Logical Processor. With the development of multicore technology, we encapsulate multiple CPUs together, a package commonly referred to as a socket. Where the physical processor is plugged in, it looks like this: Each core
Java uses the annotation processor to generate code-Part 2: annotation Processor
This article is part 2 of my "using annotation processors to generate code for Java" series. In the first part (please read here), we will introduce Java annotations and several common methods.
Now, in the second section, we will introduce annotation processors. This includes how to create annotation processors and how to r
2.1 General Concepts
1. The central processor unit (CPU) contains registers and what other basic elements?
TheClockSynchronizes the internal operations of the CPU with other system components. The clock synchronizes internal CPU operations and other system components.
TheControl Unit(Cu) coordinates the sequencing of steps involved in executing machine instructions. The Control Unit coordinates the steps in the machine instructions.
The
I will upload my new book "self-writing processor" (not published yet). Today is the tenth article. I try to write it every Thursday.
This chapter describes how to implement the openmips processor for teaching. This chapter provides a blueprint for the openmips System for the tutorial version. First, it introduces the design objectives of the system. It details the 5-level pipelines implemented by the ope
The annotations in Java are a magical thing that you don't know yet. You can see the custom annotations (Annotation) for the next hour. Now a lot of Android libraries are implemented using annotations, such as butterknife, we do not want to learn, we learn the note processor, we try to write a simple similar to the butterknife of things to bind the control.What is an annotation processor? The annotation
Java thread exception processor, Java thread processor
Thread. UncaughtExceptionHandler is a static internal interface of the Thread class. This interface has only one method:
Void uncaughtException (Thread t, Throwable e), where t represents the Thread with an exception and the exception thrown by the e-table.
If an unhandled exception is thrown during thread execution, the corresponding unhandled exceptio
The above two articles introduce two typical and simple parallel methods, and briefly introduce their performance and advantages and disadvantages. Here we will introduce another method:Micro-ThreadTo synchronize multiple parallel tasks.
Let's imagine the problem below the limit: To search for an element in a known-length huge linear table (such as a one-dimensional array), and all the elements in the table are unique. The processor we use now has two
In the second lesson example, the first processor mapper and processor adapter are configured in Springmvc.xml, as shown below. configuration of the first processor mapper beannameurlhandlermapping - Beanclass= "Org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">Bean> Configure the first p
Extended image content processor: grayscale transformation and processor parameter problems
You want to extend the image processor to process the color of each independent pixel. You also want to change the processor parameters from the XNA main project.Solution
In the previous tutorial, you learned how to extend the c
1, MCU, MPU:
Mcu:micro Control Unit (microcontroller unit)
Mpu:micro Processor Unit (microprocessor unit)
The MCU integrates the on-chip peripheral devices, the MPU without peripheral devices (such as memory arrays), is a highly integrated general-purpose processor, and is the MCU that removes the integrated peripherals.2, MCU, MPU, DSP:
Dsp:digital Signal
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