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Add in Makefile
obj-$(CONFIG_MINI2440_LED) += micro2440_leds.o
Add the following to the konfig file in the corresponding directory:
Click (here) to collapse or expand
co...[Details]
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PLC automatic control is widely used in electrical automation and intelligent control. Electric power operators know that in addition to inputting the established program, PLC automatic control als...[Details]
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Measuring principle of vernier caliper
There are only 10 divisions on the vernier scale, which is formed by dividing the 9 divisions on the main scale into 10 equal parts. Ther...[Details]
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The power system fault recorder is the foundation for studying modern power grids, and is also an important basis for evaluating the behavior of relay protection and analyzing the nature and causes...[Details]
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When it comes to I2C, many engineers who have used the STMF10X hardware I2C method feel a bit of a headache. Most of them still use software simulation. Since the general operating frequency of I2C i...[Details]
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At present, the mainstream products in the lighting market are 5-7W and 9-12W bulbs. Here, we take the 7W LED bulb as an example. The price we found in the sales stores in Shenzhen, China is $14.98...[Details]
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We have learned about audio filters and explained that audio filters also have the function of phase modulation. However, in the previous article, we skipped the most important function of the filt...[Details]
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The reason for this problem is: the folder path changes after the file is backed up.
For example, an IAR project is stored in E:\ding and is now copied to D:\wang. When you open the project in ...[Details]
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LG Energy Solution and the University of California, San Diego (UCSD) jointly developed a new generation of all-solid-state battery technology that has overcome the difficulty of charging in an envir...[Details]
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IAR compiles the built-in library functions of STM8S. We all know that there is a definition of each IO port as follows: typedef enum { GPIO_PIN_0 = ((u8)0x01), /*! Pin 0 selected */ GPIO_PIN_1...[Details]
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As we all know,
TL431
is the reference voltage in the feedback loop of the switching power supply (SMPS). This device combines the reference voltage with the open-collector error amplifier, and...[Details]
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At the I/O Developer Conference held earlier this month, Google previewed the upcoming Pixel 7 and Pixel 7 Pro. Judging from the official renderings of the back, the camera module design of the Pixel...[Details]
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A quarter of 2022 has passed, and domestic mobile phone brands have launched a large number of new mobile phones one after another. Most of them are high-end or even flagship products. Now it ...[Details]
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The following is a common optocoupler isolation circuit. TMP03 can withstand a sink current below 5MA and can be directly connected to the resistor of the LED in the optocoupler.
Ordinary optocoupl...[Details]
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ARM system clock initialization:
This requires knowing what is a clock pulse signal, what is a clock frequency, and what is a clock source.
Clock pulse signal:
Clock pulse ...[Details]
Test/Measurement
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