How can a task in uCOS wait for multiple events at the same time? I currently implement it like this and can only wait for one event: void task_ui(void * pdata) { INT8U err; TRACE(("task_ui()")); evt_...
Recently I saw the a8 chip of the am335x series because of its particularly advantageous price. The price of arm9 can buy the performance of cortex-a8, so I want to ask if I can directly learn this ch...
I want to use F7 to generate a function signal source. I checked the manual and found PA4 and PA5 outputs. Then, there is nothing else: if PA4 is used, the label is DCMI_HSYNC. A 30P FPC line is requi...
Recently, a group of photos have attracted widespread attention. One of them was taken by my country's "Maritime Silk Road No. 1" satellite, and the other was taken by a foreign satellite. The foreign...
I stopped halfway through, so this is a half-finished useless thing. I'm posting it for reference. Please don't use it for commercial purposes, otherwise you will be at your own risk. http://download....
I have made a program on MTK platform, and I wrote my own UI library. All the display is done by directly operating the video memory, which is very fast. But on WINCE, for the convenience of porting, ...
This program is written to simulate the serial port hardware mechanism. When used, a timed interrupt can be set with a time interval of 1/4 baud rate. The receiving function is called once for ea...[Details]
DSP (digital signal processor) is used more and more frequently in today's engineering applications. There are three main reasons for this: first, it has powerful computing power and is capable of ...[Details]
This paper establishes a fuel cell engine test platform based on the NI integrated hardware and software environment. This platform can realize the test and control of fuel cell engines and their a...[Details]
Introduction
Nowadays, people pay more and more attention to the security alarm system, and people have higher and higher requirements for the functions and performance of the alarm. This paper prop...[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]
1 Introduction to LED
With the development of science and technology, people have higher and higher requirements on automobile light sources. LED (Light Emitting Diode) has gradually attracted...[Details]
The production process of lithium batteries does not mention the previous processes such as material preparation, winding, liquid injection, and packaging, but only talks about the final formation ...[Details]
1. Tips for charging UPS for the first time
After purchasing a new UPS, plug the UPS into the 220V mains power grid and charge it for at least 12 hours to ensure that the battery is fully char...[Details]
Power supply is often the most easily overlooked link in the circuit design process. In fact, as an excellent design, power supply design should be very important, which greatly affects the perfor...[Details]
DigRF
is
poised to replace the two main forms of data communication paths between RF and baseband semiconductor devices:
analog
signaling, and proprietary digital signaling (paralle...[Details]
0 Introduction
In the design and construction of communication systems,
communication power supply
is called the heart of the communication system. The power supply system will dire...[Details]
1. Brief Introduction
With the continuous development and improvement of single-chip microcomputer technology, single-chip microcomputers have been widely used in all walks of life, and ...[Details]
UDN2916LB is a two-phase stepper motor bipolar driver integrated circuit launched by SANKEN. It can drive dual-winding bipolar stepper motors and is particularly suitable for controlling dual-step ...[Details]
Traditionally, when using PLC to control stepper motors, a dedicated stepper motor control intelligent module is usually added to the PLC, and then connected to the drive power supply to realize th...[Details]
In some motion control systems with simple control or low cost requirements, stepper motors are often used as actuators. The biggest advantage of stepper motors in such applications is that they ca...[Details]
Real-time operating system RTOS
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