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, ...
When the WDP500-2A plane grating monochromator is used to test the emission wavelength of a high-power laser diode at different currents, the matching of the laser diode has the disadvantages of lo...[Details]
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[Details]
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
0 Introduction
With the rise and continuous improvement of the solid-state lighting industry, light-emitting diodes (LEDs) have become an alternative lighting technology and are gr...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
Abstract: In order to realize wireless automatic alarm and monitoring of major safety places, based on the basic principle of pyroelectric infrared sensing, a detector for receiving infrared radia...[Details]
Among the uses of electrical energy, lighting accounts for a considerable proportion. Compared with the earlier ordinary incandescent lamps, the fluorescent lamps and energy-saving lamps we commonl...[Details]
Movpower is a portable power bank. It can charge most mobile phones and digital products, such as digital cameras, PDAs, and mobile phones such as Apple, iPod, Blackberry, Motorola, Samsung, Nokia,...[Details]
summary
This article will briefly analyze the success and shortcomings of high-frequency DC-DC switching power supplies in the process of miniaturization (the second basic goal), and propose m...[Details]
HL201A is a special thick film driver integrated circuit with a capacity of less than 75AGTR developed by Xi'an Power Electronics Technology Research Institute. The article explains the pin arrange...[Details]
With the popularity of digital appliances, rechargeable batteries can be seen everywhere in people's daily lives and have become one of the indispensable daily necessities.
This article gives ...[Details]
introduction
The core features of mobile value-added service products are mobility, immediacy and personalization. Mobile value-added services are a new service mode that is rapidly developing...[Details]
0 Introduction
PROFIBUS is an open digital communication system with a wide range of applications, which has been included in the international standards IEC 61158 and IEC 61784. Since the gen...[Details]
Real-time operating system RTOS
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