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1 Introduction
High reliability software generally refers to a type of software: if a failure occurs during the operation of this type of software, it will cause major catastrophic accidents or e...[Details]
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1. The AVR document requires that interrupts should not be nested, and only one interrupt can be executed after the current one; 2. When the ADC is sampling, there is an external pull-up of 51K, the ...[Details]
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The mmap function used in user space is provided by glibc Statement found through man mmap #include sys/mman.h void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);...[Details]
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Clamp meter and digital multimeter are both essential "equipment" for welders. These two instruments have different focuses in their functions. Clamp meter focuses on measuring high current and digit...[Details]
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During the development process, you often need to check certain specific parameters. The usual method is to use paintf to print out and observe the specific variable values. STM32 has an internal USA...[Details]
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1. AC LED
The driving voltage of a single-crystal LED light-emitting chip is within 4V. No matter how high the driving voltage is, it can be connected in series to obtain a suitable driving vo...[Details]
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In practical applications, a software-programmable gain amplifier (PGA) is often required to amplify analog input signals of different amplitudes to a certain range, which is convenient for sampling...[Details]
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Before implementing the driver, let's think about two questions:
1. Problem Analysis
1. When does a driver look for a device on the bus that it can handle?
In driver_register(&my_dri...[Details]
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advanced Driver Assistance Systems ( The development of ADAS is unprecedented. What was once considered a high-end luxury item is now common, optional (and sometimes even standard) on today’s mid-r...[Details]
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From
autonomous
vehicles to daily commuter or commercial vehicles,
various
communication
links including cellular, WiFi, navigation (GNSS/GPS/Beidou/Glo-
NASS
), UWB, etc.
ar...[Details]
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1. Knowledge preparation To have a deeper understanding of ucos-ii transplantation, two aspects of knowledge are required: (1) Target chip, here is the LPC17xx series chips, they are all based on t...[Details]
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“The Age of Disruption” is perhaps the most appropriate description of the era we live in. Big data, AI, 5G, IoT... Various disruptive technologies have gradually emerged and complemented each other...[Details]
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In September, CATL's installed capacity approached 20GWh, far ahead of the rest, but its market share fell again, the third time after the declines in April and July this year. Thanks to the strong sa...[Details]
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Design requirements - basic requirements Design and manufacture a square wave-triangle wave-sine wave signal generator with a power supply of ±12V. (1) The output frequency can be continuously adju...[Details]
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Since pulse width modulation technology achieves the effect of voltage and frequency conversion of output voltage by adjusting the frequency and duty cycle of output pulses, it has been increasingl...[Details]
PCB Design
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