microcontroller watchdog

For beginners who want to learn MSP430 MCU, or, you are just transferred to the electronic hardware embedded development, if your electronic basic course has been completed, want to master MSP430 microcontroller, and how to break into the MSP430 learning process as soon as possible, Now summarizes some problems that the novice starts to learn MSP430, and the attention matters and methods in the study. For the heart to learn MSP430 single-chip children

reveals that many people recommend shutting down the stack monitor in the real-time operating system to save 56 bytes of flash space. Wait, this is not worth the candle! More exciting content can also pay attention to the Huaqing vision Oh!Tip 5: Use MPUIn the past, it was difficult to find a Memory protection Unit (MPU) in a small, inexpensive microcontroller, but this situation has begun to change. Now the MPU is already available from high-end to

Document directory (1) experiment Overview (2) program flowchart (3) experiment source code and Analysis (4) experiment results: I. Connecting Even better operating systems, whether in win7 or later Win8 or win9, there will always be Bluescreen, not to mention the small microcontroller ~ Unknown causes such as electrical noise, power supply failure, and electrostatic discharge may cause abnormal operation of the embedded system. The watch dog

microcontroller, a command cycle can contain several to dozens of CPU clock cycles. Execution speed: the number of commands (IPS) that the CPU can execute within one second ). People tend to use the clock frequency to measure the execution speed of a CPU. In fact, it is not accurate enough. Because of different CPUs, the number of clock cycles used to execute a command is different. Power-saving (sleep) mode:Different single-chip microcomputer have d

a single-chip microcomputer, integrates the entire computer system into a chip. Embedded Microcontroller generally takes a microprocessor kernel as the core. According to some typical applications, the chip is integrated with ROM/EPROM, Ram, bus, bus logic, timing/counter, watchdog, I/O, serial port, pulse width modulation output, A/D, D/, flash Ram, EEPROM and other necessary functional components and per

Keys are one of the most commonly used input devices in the single-chip microcomputer system. A keyboard is required for interactive input. This blog implements a general keyboardProgramAs long as a function is provided to read the key value (the underlying key value), the program will complete some column processing, such as dejittering and saving to the queue. At the same time, this program provides the most commonly used 4*4 matrix keyboard program, and 4 button program. Hardware intr

Optimization Design of smoke alarm based on MSP430 [Date: 2008-10-22] Source: World Electronic Components by Li Peng Wang Ting Wu yanwen, Huazhong Normal University [Font:Large Medium Small] 　 Introduction Traditional smoke alarms are generally composed of Smoke sensors and smoke detection chips. The detection chips receive and process sensor signals to determine whether a fire has occurred. This smoke detector has simple structure and low cost, but has the disadvantages of

profound, and finally nothing. is the so-called "layman to see the bustling, professional look at the doorway", the introduction of the single-chip model, the ever-changing performance improvement, are laymen watching the lively. Embedded system is said to "put the most suitable control system into the product", "Application" is the most concerned about the problem.Ask a question: what is the most important thing about learning a single-chip computer? In general, we may think that learning a

1. What is watchdog?Watchdog, the Chinese name is "Watchdog" and its full name is watchdog timer. We can literally know that it is actually a timer. However, it is different from the Timer we normally use. A common timer generally serves as a timer, and a timer timeout (timer out) causes an interruption, for example, t

interface 3-Channel I²c interface 2-Channel SPI interface 4-channel UART interface with Bluetooth 2.0 support 1 x USB 2.0 OTG Controller 1 x USB 2.0 host Controller Supports asynchronous modem interfaces 4-Channel SD/SDIO/HS-MMC interface Supports ATA/ATAPI-6 standard interface 24-Channel Dam control Support 14x8 Matrix keyboard 10-Channel 12-bit multiplexed ADC Configurable Gpio ports Real-time clock, PLL, timer, watchdog,

(general-purpose registers and I/O registers) are also zeroed by the reset operation.There are 5 reset sources for the ATMEGA16 microcontroller, which are:1, power-on reset. When the system supply voltage is lower than the power-on reset threshold Vpot, the MCU resets.2, external reset. When the external pin reset is low and the low duration is longer than 1.5us, the MCU resets.3, the power-down detection (BOD) reset. When the BOD is enabled and the

This series of articles written by muge0913, reproduced please note the Source: http://blog.csdn.net/muge0913/article/details/7374490 Author: Zhang tonghao, mail: muge0913@sina.com When the system operation is subject to external interference or system errors, the program sometimes runs and crashes the entire system. It will set a period of time when it exceeds this period of time, jump out of the program and enter the interrupt processing program. Watch