msp430 mcu

Summary:This article takes Stm32f103rbt6 as an example to introduce some problems of on-chip Flash (Embedded Flash), including flash size (memory map), block size, page size, register. This knowledge is helpful for writing flash drivers.First, how to see the size of flash1.1 By modelModel will be printed on the MCU surface, can be obtained by observation, my is STM32F103RBT6 (the following analysis based on this model), the control of the STM32 produc

consideration of the real-time monitoring of the single chip microcomputer running status, a chip is generated to monitor the running status of the single chip microcomputer,Commonly known as "Watchdog"(Watchdog) The application of the Watchdog Circuit enables the single-chip microcomputer to work continuously in the unmanned State. Its working principle is: the watchdog chip and the single-chip microcomputerAn I/O pin is connected, and the I/O pin is controlled by a program to regularly send h

ATMEL Corporation announced the launch of its AT91CAP7A-STK entry-level development kit, designed to evaluate its ProcessorCustom cap Microcontroller(MCU) series of entry-level tools. The custom MCU of cap7 allows designers to transfer from the "ARM7 and FPGA" design to a low one-time R D cost (NRE) Single ChipSolution: the cost per device is reduced by about 30%, and the performance is improved by 8 times

!Initrd vs. initramfs Using initrd, kernel and initial file system are splitted. Making changes to kernel or filesystem doesn't touch the other one. The download size (e.g. while development) of one component is smaller. Creating and modifying an initramfs is easier than with initrd (unzip mount unmount zip) Having one big image (kernel initramfs) is easier to handle (e.g. download or flashing) than having two splitted images. For technical support please post your question

systemRebootOperation. Watchdogtimer (WDT), also known as watchdogtimer, is a timer circuit. It generally has an input, which is called a dog Feed and an output to the MCU (Microcontroller Unit, also known as a single chip microcomputer) when the MCU works normally, a signal is output to the dog Feed End at intervals, and the WDT is cleared,If a dog is not fed after the specified time (generally when the p

1602b liquid crystal use example [] The LCD module has the characteristics of small size, low power consumption, rich display content, and so on. The LCD module is now the most commonly used information display device in Single Chip Microcomputer Application Design.This experiment uses the common 1602b serial LCD module as an example to describe the simple use of this module. 1602b can display 2 lines of 16 characters, there are 8-Bit Data Bus D0-D7, and RS, R/W, en three control ports,

, used for the MCU notification module, whether the MCU is ready, whether the module can send information to the MCU, RTS effective level is low.CTS is the output of the module for the module to notify the MCU, whether the module is ready, whether the MCU can send informatio

I. RTS and CTS in the RS232 standardrts,cts------Request Send/clear send, for half-double hours of transceiver switching, belongs to the auxiliary flow control signal. Half-duplex means to say that when the hair is not received, when the collection is not sent. So how do you differentiate between sending and receiving? By default, the DCE sends data to the DTE, and when DTE decides to send data to DCE, the RTS is valid, indicating that the DTE wants to send to the DCE. The general DCE is not abl

Transferred from: http://www.cnblogs.com/sunyubo/archive/2010/04/21/2282176.htmlI. RTS and CTS in the RS232 standardrts,cts------Request Send/clear send, for half-double hours of transceiver switching, belongs to the auxiliary flow control signal. Half-duplex means to say that when the hair is not received, when the collection is not sent. So how do you differentiate between sending and receiving? By default, the DCE sends data to the DTE, and when DTE decides to send data to DCE, the RTS is val

JTAG is the traditional mechanism for debug connections for ARM7/9 parts, but with the Cortex-m family, ARM introduced th E Serial wire Debug (SWD) Interface. SWD is designed-to-reduce the pin count required for debug from the 5 used by JTAG (including GND) to 3. In addition, one of the pins freed to this can is used for the low cost SWO tracing technology-for more details see T He FAQ "Overview of Trace support in Lpcxpresso IDE".The SWD/SWV pins is overlaid on top of the JTAG pins as follows:S

(Address Resolution) protocol, Transport layerUDP(user packet) protocol, application layerHTTP(Hyper-text transfer) protocol,DNS(Domain name resolution) protocol,FTP(File Transfer) protocol,SMTP(Simple Mail Management) protocol, and so on. traditional Ethernet access schemes, such as mcu+mac+phy And then join the network interface to realize the physical connection of Ethernet, by implanting in the master chip TCP/IP Protocol code for communication an

When considering the read/write conflict of the dual-port RAM, we decided to use the busy signal line of the dual-port RAM cy7c131 to feedback the ft2232h MCU host bus. When a single module of the dual-port RAM can read and write, busyl and busyr are both high levels. If a conflict occurs, a later request will become a low level. At this time, there are two ideas. (1) listen on the I/01 pin of the MCU

1 , the bits defined in the bit address area in internal ram are given (B).A). bit operation preparation B). (C) to be prepared for the shift operation). To control transfer operation preparation D). All of the above2 , the operation of the program counter PC (A).A). is automatically carried out B). It's through the transmission.C). Is through the addition of 1 instructions D). It was done by minus 1.3 , Assuming that the value of the set stack pointer sp is 37H, the SP has a value of (D) after

MfMicrosoft. NET micro framework is a micro. NET Framework launched by Microsoft. To what extent? It can be an operating system OS and compiled Program You can run the command directly on the hardware. Of course, you can also use it on other embedded systems (such as UCOS). The MCU will start to execute the first command no matter what operating system it is, where is it. With it, we can directly use Visual Studio C # Write embedded programs. However,

the memory organization, the microprocessor and DSP subsystem may have their own separate fast buffer memory (Cache), with shared on-chip SRAM and shared external expansion memory.Extended memory generally supports synchronous dynamic random memory (SDRAM) and NAND flash RAM.The FLASH ROM can be used to store the boot ROM, link operating system, and user application's CP ROM. The ROM interface is primarily used to connect the memory Flash ROM of the stored program. The RAM interface is primaril

Hardware foundation of Linux driver Design (i.)This chapter summarizes the hardware basis for learning Linux device programming.First, the processor1.1 General Purpose processorsGeneral-purpose Processors (GPP) do not optimize architecture and instruction sets for specific areas of application, they have generalized general-purpose architectures and instruction sets to support complex operations and facilitate the addition of new development features. In general, a generic processor core is incl

point of the motherboard voltage, to pay attention to the voltage (4.8V), reset voltage (high or low level, according to different models), MCU voltage. If a power supply short circuit, to carefully find short circuit position, there will be PCB board copper foil may be short circuit (2) Find out whether the contact between the MCU and the motherboard is good (3) Check whether the motherboard chip and

In the previous article (WEBRTC Audio-related Neteq (ii): Data structure) Neteq the main data structures, to understand the mechanism of Neteq lay a good foundation. This article is mainly about how the RTP packets received from the network in the MCU are put into packet buffer and taken out from packet buffer, as well as the calculation of the network delay value (optbuflevel) and the jitter buffer delay value (bufflevelfilt). Let's see how RTP voice

-mainstream interpretation of the confusing, the following with small gray font) RTS is the input side of the module, used for the MCU notification module, whether the MCU is ready, whether the module can send information to the MCU, RTS effective level is low. CTS is the output of the module for the module to notify the MCU