Publicity for Information Security, Enlightenment of Information Security Knowledge. Add WeChat group to reply to the public account: WeChat Group; QQ Group: 16004488 You can get free materials by joining the WeChat or QQ group:Learning Tutorials Tutorial ListSee the bottom menu of the public account Assembly language (assembly language) is a low-level language used for … Read more
Speaking of μC/OS, most people are probably familiar with it; it is a real-time operating system (RTOS) developed by Micrium. 1. Origin of μC/OS The story of μC/OS began in 1989 when its founder Jean J. Labrosse participated in a Dynalco control project and started designing a new ignition control system based on microprocessors for … Read more
The μC/OS-II operating system is a preemptive multitasking, single memory space, microkernel embedded operating system with efficient and compact characteristics. It has high execution efficiency, occupies little space, is highly portable, has good real-time performance, and strong scalability. Using the μC/OS-II real-time operating system can effectively schedule tasks; assigning different priorities to tasks ensures timely … Read more
01 HDMI Switching 1. Introduction This four-channel HDMI video switch controller has been used in my laboratory video recording process. It can be controlled via the front panel buttons or through commands sent over the network. To facilitate remote control on the experiment bench, I am preparing to use this wireless WiFi to serial module … Read more
1. Introduction As shown in the figure below, this four-channel HDMI video switch controller has been used during the video recording process in my laboratory. It can be controlled via the front panel buttons or by sending commands over the network. To facilitate remote control on the experimental platform, I plan to use this wireless … Read more
Introduction nRF24.L01 is a new type of single-chip RF transceiver device that operates in the 2.4 GHz to 2.5 GHz ISM band. It has built-in functions such as a frequency synthesizer, power amplifier, crystal oscillator, and modulator, and integrates enhanced ShockBurst technology, allowing the output power and communication channels to be configured via programming. This … Read more
Click the blue text to follow Optimizing ADC sampling accuracy is a key skill in microcontroller development, especially when processing sensor data. An inaccurate ADC sampling result can lead to system failures, such as significant errors in temperature sensors, causing devices to overheat or become too cold. Today, let’s discuss how to improve the accuracy … Read more
Introduction to SPI Interface and Features The standard SPI interface has 4 signal lines. Signal Function Direction SCLK Clock signal line, used for synchronizing communication data master->slave MOSI Master device output master->slave MISO Master device input slave->master CS Slave device select signal line, commonly referred to as chip select signal line, also known as NSS, … Read more
01 【SPI Concept】 SPI (Serial Peripheral Interface) is a synchronous serial port for communication between microcontroller units (MCUs) and peripheral ICs (such as sensors, ADCs, DACs, driver chips, and external storage devices). The communication rate can range from a few thousand bps to hundreds of Mbps or even higher, depending on the specifications and performance … Read more
Click the Blue Text Follow Us 1. Introduction 1. Concept The IIC protocol (I²C, or Inter-Integrated Circuit) is a widely used low-speed serial half-duplex communication protocol for communication between integrated circuits, allowing only unidirectional communication at any one time. It was invented by Philips in the 1980s and is widely used for data transmission between … Read more