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This article mainly discusses software debouncing. The implementation method is to scan the keys every 1ms through the SysTick interrupt, and only perform the corresponding logical operation after de...[Details]
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1 Introduction
The Windows operating system has become a widely used operating system platform in various fields due to its excellent performance. Since Windows adopts a shielding strategy fo...[Details]
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Ozone O3 is a light blue gas with a grassy smell. Its chemical properties are very active. Its energy when free instantly produces a strong oxidizing effect. It has a very strong oxidizing ability. H...[Details]
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Interrupt is an internal mechanism for microcontrollers to process internal or external events in real time. When an internal or external event occurs, the interrupt system of the microcontroll...[Details]
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In Keil, printf sends data to the serial port by default. Therefore, if you use this function, you must initialize the serial port first, otherwise it may cause a crash. In addition, TI should be set ...[Details]
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Bluetooth has many applications in modern life, but at its core, the function of Bluetooth is to transmit signals. For Bluetooth, we are more exposed to Bluetooth headsets in our daily lives. So, wha...[Details]
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The previous article introduced the host power-on reset USB device. In the process of establishing control transmission, 8 bytes of data were sent to the device. These 8 bytes are 0x80 0x06 0x00 ...[Details]
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In addition to the transformer, the magnetic component of the forward converter also has an inductor, namely the choke. The general information starts from the transformer, but I think it is better...[Details]
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The resistance is measured on the resistance meter. Resistance values vary greatly, from a few milliohms (mΩ) for contact resistance to billions of ohms for insulation resistance. Most digital mu...[Details]
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Is it too early to "fly" into ordinary people's homes?
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According to foreign media reports, Amazon recently released a report saying that on Christmas Day, Kindle e-boo...[Details]
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12864 is a serial connection. AD0~AD4 is connected to 5V power supply. AD5~AD7 is connected to GND. STC15W408AS comes with 8 channels of 10-bit AD . The program only uses the upper eight bits. ...[Details]
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1 Introduction
The communication countermeasure system needs to process signals in a complex information environment, and requires filters to select signals. Filters are mainly used t...[Details]
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If a fixed clock is not used to initialize the on-time, but a detection circuit is used to effectively "sense" the first minimum or valley of the MOSFET (VDS) drain-source voltage and only start the M...[Details]
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Wireless power transmission, especially for battery charging, is a growing market trend in portable electronic devices and electric vehicles. Nikola Tesla first proposed the concept of wireless power...[Details]
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The physical design of the PCB board is the last step in the design of switching power supplies. If the design method is not appropriate, the PCB may radiate too much electromagnetic interference, ...[Details]