FREQ3MQ/20/10/-20+70/18PF/40R

Poll mechanism: In order to reduce the occupancy rate of CPU resources, the poll mechanism is added to the driver function. Select, poll, and epoll are all IO multiplexing mechanisms. I/O multiplex...[Details]

Assembly program for using MCU T0 as timer to realize digital tube display (interrupt method)  The circuit is: P0 port is connected to the font code pen segment of the digital tube, and P2 port is co...[Details]

Introduction: Discussion on whether to set the direction or value of AVR port first I have studied this issue carefully, and finally concluded that it is more reasonable to consider the level first...[Details]

Affected by factors such as the rapid growth of new energy installed capacity, the development of power trading models, the decline in raw material costs, and top-level policy guidance, the global new...[Details]

#include // Header file containing 51 MCU register definitions #include intrins.h //Header file containing _nop_() function definition #define OP_READ 0xa1 //Device address and read operation, 0xa1...[Details]

1. Cross-compile zlib Zlib can be downloaded from http://www.zlib.net/. The version I downloaded is zlib-1.2.11. The following is the compilation script: #!/bin/bash export CC=arm-linux-gcc ....[Details]

Efinix recently announced the launch of three software-defined RISC-V-based cores, namely Ruby, Jade and Opal. The three designs have been optimized for Efinix’s Trion family of FPGAs and offer com...[Details]

LED energy-saving lamp types The first category: LED energy-saving lamps made of straw-hat-shaped low-power LEDs, the power supply adopts a RC step-down circuit. The straw-hat-shaped LED uses ...[Details]

Code #include reg52.h #include intrins.h #define uchar unsigned char #define uint unsigned int uchar code DSY_CODE = {   0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0...[Details]

1 Introduction Ultrasonic waves have strong directivity, slow energy consumption, and can propagate over long distances in a medium, so they are used for distance measurement. Ultrasonic detect...[Details]

First, let's introduce the registers related to DMA of s3c2410. The s3c2410 has 4 channels of DMA, 9 registers per channel, a total of 36.       1. DISRCn This register stores the source address of ...[Details]

Next, the host will use the new device address to communicate with the device. The host needs to obtain the device descriptor, configuration descriptor, string descriptor again. In addition, the HID d...[Details]

Recently, Samsung SDI announced their latest Super-Gap solid-state battery technology. According to reports, its performance is about 40% better than lithium-ion batteries, with a maximum energy dens...[Details]

This article briefly introduces the design of automotive electronic vehicle-mounted camera circuit. The camera operates reliably. When reversing, it can not only clearly display the panoramic view be...[Details]

CAN (Controller Area Network) is a communication protocol used in the automotive and industrial automation fields. It is widely used for its high reliability, real-time and flexibility. However, in...[Details]