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Program Features Enumerate the STM32 USB as a HID device. STM32 uses 3 endpoints, endpoint 0 is used for enumeration, and endpoints 1 and 2 are used for sending and receiving data. The endpoint le...[Details]
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introduction I have been involved in embedded software development for nearly five years, and I have almost always used ARM Cortex M core series microcontrollers. During these five years, thanks to t...[Details]
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GPIO (General Purpose I/O Ports) means general purpose input/output ports. In layman's terms, they are some pins that can output high and low levels or read the status of the pins - high or lo...[Details]
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Platform: mini2440 Cross toolchain: arm-linux-gcc-4.3.2
1. Basic knowledge of kernel transplantation
Porting the kernel is also called building a BSP (boardsupport packet). BSP ...[Details]
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introduction With the development of digital electronic technology and the emergence of microcontrollers such as microcontrollers, voice storage and automatic playback have become easy to implement. ...[Details]
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Honda has combined its various new energy technologies to build a home energy management system (HEMS), also known as the Honda Smart Home System, at the University of California West Village cam...[Details]
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1. Introduction
(1) When an application uses a sound card, the data flow is as follows: the application sends data to the driver, the driver sends the data to the hardware sound card, and the ...[Details]
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Bob bought an oscilloscope with a nominal 300MHZ, and the nominal value of the probe is 300MHZ, and both indicators are 3DB bandwidth. Question: For a signal with a rise time of 2NS, what is the impac...[Details]
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Samsung Electronics said it has opened a new R&D research laboratory in Silicon Valley, USA, to focus on the development of next-generation 3D DRAM chips. The laboratory, operated by Device Solution...[Details]
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Efficiency is the basic indicator of any switching power supply. The first thing to consider when designing any switching power supply is efficiency optimization, especially for portable products...[Details]
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1. No display after power on Possible reasons: Auxiliary power is not added to the instrument; power transformer or switching power supply failure Solution: Use a multimeter to check the auxiliary po...[Details]
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Tier 1 PV manufacturer Hanwha Q CELLS has signed a 70MW module supply contract with Ramnad Solar, a subsidiary of Indian conglomerate Adani Group.
The modules will be installed in Tamil Nadu. ...[Details]
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As a semiconductor device, the life of LED lamp beads is more than 50,000 hours. However, electrolytic capacitors are commonly used in LED lighting driver solutions, and their life is only 5,000 to 1...[Details]
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Earlier, there were reports that Apple had canceled the hardware development of AR/VR headsets, but according to some details found by MacRumors in the internal version of iOS 13, Apple does not seem...[Details]
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Measuring the high-level and low-level resistance of the CAN bus (Controller Area Network) is an important task because they are crucial to ensure the normal communication of the CAN bus.
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