PLC Communication Made Easy: A Shortcut to Mastering the Modbus Protocol Hello everyone, I am Lao Liu. With over twenty years of PLC programming experience, I can tell you that many beginners are most afraid of the communication part. Today, let’s talk about something practical—the Modbus protocol. It may seem complex, but it is essentially … Read more
Need to transfer data urgently but have no solution?OTG card readers can solve this problem!In modern digital life, data transfer difficulties are common.Today, we will review several popular card readers. 01Pisen Type-C OTG TF Card Reader Interface Type: Uses a Type-C interface, compatible with both smartphones and tablets, making connections convenient and quick.Transfer Speed: Complies … Read more
Author | Confused Zhen Produced by | Automotive Electronics and Software #01Introduction to the Serial Peripheral Interface (SPI) Protocol SPI is a multi-master or master-slave, four-wire, full-duplex synchronous serial communication protocol, which means that data can be sent and received simultaneously.SPI was developed by Motorola as a protocol for synchronous serial communication, allowing full-duplex communication … Read more
As expected, the annual “Tech Spring Festival” — Apple’s autumn launch event, is set to take place next month. As in previous years, leading up to the launch event, rumors about the latest generation of iPhones, including spy photos and specifications, flood the internet from various sources. This year’s leaks mainly focus on the mute … Read more
Hello everyone, I am Yu Yong. Yesterday, I encountered a problem: a Linux server used for data transfer suddenly stopped being able to perform data transfers. Upon checking the logs, there were messages indicating that files could not be saved and ‘No space left on device’. Using the command df -Th to check disk space, … Read more
Embedded Development in C: SPI Communication Protocol Introduction The SPI (Serial Peripheral Interface) is a synchronous serial communication protocol widely used for high-speed data transfer between microcontrollers and various peripherals. It was introduced by Motorola in the 1980s and has been widely adopted due to its simplicity, flexibility, and efficiency. SPI is typically used to … Read more
Hello everyone, I am the Information Guy~ In the pursuit of extreme performance in server development, how to reduce the number of data copies and lower CPU usage is an eternal topic. Today, I will introduce the combination of <span><span>mmap</span></span> and <span><span>socket</span></span>, which is a powerful tool to address this pain point, and has been … Read more
Many readers may have encountered a situation where they initially purchased a smaller capacity microSD card for their NS, thinking they wouldn’t use up all that space. However, over time, they realized they underestimated their purchasing ability, leading them to buy a larger capacity microSD card. This raises the question of how to transfer the … Read more
Bluetooth is a radio technology that supports short-range communication between devices (generally within 10 meters). It allows for wireless information exchange among various devices, including mobile phones, PDAs, wireless headsets, laptops, and related peripherals. By utilizing Bluetooth technology, communication between mobile terminal devices can be effectively simplified, and communication between devices and the Internet can … Read more
Click the blue text Follow us Due to changes in the public account’s push rules, please click “Read” and add “Star” to get exciting technical shares as soon as possible. Source from the internet, please delete if infringing DMA, short for Direct Memory Access, is a method for transferring data directly between memory and peripherals … Read more