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1. Initialize the serial port clock and serial IO port clock: 使用RCC_APB2PeriphClockCmd(uint32_t RCC_APB2Periph, FunctionalState NewState); Note: Why should we enable the IO port clock? Refer to U...[Details]
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Every year at the beginning of the new year, there is always exciting news coming from the CES exhibition in Las Vegas in the United States. Since automobiles entered the new energy era, this techn...[Details]
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During the promotion of the ZDS2022 oscilloscope, front-line engineers often come to us to discuss some doubts about mains power measurement, which are roughly the following questions: 1. Why does t...[Details]
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Recently, Samsung released the 2022 Galaxy S20 FE in South Korea. The configuration is the same as the previous Galaxy S20 FE. However, because it does not come with headphones, it is cheaper. ...[Details]
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At present, true wireless stereo (TWS) Bluetooth headsets have made great progress and completely got rid of the constraints of connecting wires. Huawei's TWS headsets also occupy an important share ...[Details]
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The picture shows the SW399
standard battery
replacement.
The circuit shown in the figure is a standard power supply with an output voltage of 1.01V, ...[Details]
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Today I accidentally discovered that there is an examples directory in u-boot. After compiling u-boot, I found several test programs, such as hello_world. At the same time, there is an option in the ...[Details]
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The magnetization process of the iron core by DC pulses is similar to the charging and discharging of a capacitor, except that there is residual magnetism in the iron core after the current disap...[Details]
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There are many types of compensation networks. They can be roughly divided into three types: lead, lag, and lag-lead. Applying them to compensate (or correct) the system is called lead correction, ...[Details]
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SCI is a full-duplex asynchronous serial communication interface, mainly used for communication between MCU and other computers or devices. Several independent MCUs can also realize serial communicat...[Details]
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At present, there are mainly the following design methods for microwave power amplifiers:
(1) Dynamic impedance measurement method. Under actual working conditions, use an instrument to meas...[Details]
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Samsung's upcoming mid-range phones Galaxy A52 and A72 have been exposed many times before. According to foreign media 91mobiles, photos of Samsung's new charger were leaked by the factory. The...[Details]
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It is important for RFIC users and designers to know the theoretical limits of some of these receiver characteristics so that they can determine if their design improvements have been successful.
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Designers of wearable devices—including smartwatches, fitness trackers, heart monitors, and many others—have been working hard to find ways to extend battery life to improve user convenience. Howev...[Details]
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Helps understand memory PC = progammer counter //Program counter ACC = accumulate //Accumulator PSW = progammer status word //Program status word SP = stack point //stack pointer DPTR = data point re...[Details]