The ModBus frame format is: slave address (1 byte), function code (1 byte), start address (2 bytes), data length (2 bytes), CRC code (2 bytes) Then the data transmission mode is specified as serial as...
Use WTIIME1 to write a frequency meter (high frequency part). The low frequency uses the capture timing mode to measure the result, and the high frequency uses the capture counting mode. However, when...
[font=微软雅黑][size=4]While I was in a good mood, um. So I placed an order and bought the STM32F746-DISCO board. I was willful for a while, and I couldn't fall behind anyway [/size][/font]:lol.[font=微软雅黑...
The system symbol table creation process is as follows, and the parameter SYM_TBL_HASH_SIZE_LOG2 of the symTblCreate function is defined as 8. Is there only 8 power of 2 = 256 symbol table entries? If...
Are you interested in developing embedded systems? Since embedded systems have high requirements for efficiency, they need to follow strict design principles. White's book "Embedded Systems Design and...
According to IAR's method, if you think adding files is troublesome, the easiest way is to write a __low_level_init function yourself. You don't need to call this function in the main function. This f...
In
circuit design,
current
measurement
is widely used, and the main fields are divided into three categories: in measurement,
the electric meter
is used to measure the curre...[Details]
0 Introduction
With the development of my country's economy, the number of motor vehicles continues to increase. The growth of existing roads and other hardware facilities can no longer meet t...[Details]
In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
In the previous series, we have listed some basic knowledge of C language in Tables 1 to 3. We hope that beginners can strengthen their memory of the above tables and gradually learn to use them wh...[Details]
A multi-point temperature control heating control system was designed using the SST89E564RC single-chip microcomputer and a new temperature measuring device. The heating system can be controlled in...[Details]
my country is a big country in agriculture, grain production and consumption. Grains are a necessary condition for our nation to survive and develop. The flour processing industry will exist forever w...[Details]
This paper designs a 16x16LED Chinese character display bar based on single-chip dynamic scanning control, briefly analyzes the principle of Chinese character display, and studies how the LED displ...[Details]
This article will introduce a design method for a distributed control system used in a tracking car, which can perform distributed control of motor modules, sensor modules, and lighting control mod...[Details]
introduction
At present, measuring instruments are developing towards networking, and each individual embedded instrument will become a node on the Internet. This system realizes the network...[Details]
The DisplayPort interface standard is approved by the Video Electronics Standards Association (VESA) to provide an open, scalable standard for the entire industry. The development of DisplayPort ca...[Details]
Key Points
1. Now, in addition to high-end smartphones and tablets, users also expect to use touch screens in other applications, and they are gradually appearing in cars and instruments.
...[Details]
Leakage current is generated by parasitic resistance paths between the measurement circuit and a nearby voltage source. This current can significantly reduce the accuracy of low current measurement...[Details]
In industry, voltage 0…5 (10) V or current 0 (4)…20 mA is usually used as a method for analog signal transmission, which is also a method often used by programmable controllers. So what are the dif...[Details]
In recent years, with the increasing maturity of LED technology, LED light sources have been increasingly widely used due to their advantages of using low-voltage power supply, low energy consumpti...[Details]