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(Image source: technologyreview.com) According to foreign media reports, long-distance photography on Earth is a tricky challenge, and it is not easy to capture enough light from an object at a lo...[Details]
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Compile, link and disassemble arm-none-linux-gnueabi-gcc -g -nostdlib -c -o led.o led.c arm-none-linux-gnueabi-gcc -g -nostdlib -c -o start.o start.s arm-none-linux-gnueabi-ld -Ttext 0 -g start.o led...[Details]
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ICCAVR is a tool that complies with the ANSI standard for developing MCU programs using C language. It has the advantages of being suitable for use, easy to use, and having strong technical support. ...[Details]
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Excelitas Technologies®, a global leader in innovative, customized optoelectronic solutions, has recently launched the LINOS® telecentric F-Theta-Ronar 250mm lens with a focal length of 515nm-540nm. ...[Details]
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The latest news from foreign whistleblower EverythingApplePro said that the iPhone 12 Pro will be equipped with a 120Hz refresh rate screen. In addition, the iPhone 12 series is expected to improve t...[Details]
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I have been struggling with a problem for a while. The same interrupt test program was programmed to nandflash and ran without any problems. However, strange phenomena occurred when it was programmed...[Details]
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1 Introduction Waveform generators have been widely used in various fields such as communication, control, and measurement. Waveforms such as sawtooth waves, sine waves, and square waves are ofte...[Details]
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On July 23, at the launch of Honor 9X, Honor President Zhao Ming put forward the new concept of "sharp technology", emphasizing that Honor will solve problems with continuous innovative technology, a...[Details]
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I did some development for arm some time ago, mainly writing the startup software for arm and porting uCOS-II to arm7. I like to do things in a simple way, and make a framework from the simplest and m...[Details]
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As we all know, safety is an eternal theme of power enterprises, and the quality of safety tools will directly affect the personal and equipment safety of power enterprises in the production proc...[Details]
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With the popularization of new energy concepts, the application of photovoltaic power generation is becoming more and more extensive. Photovoltaic inverters are an important part of photovoltaic p...[Details]
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Previously, mobile phone manufacturers making chips was the "patent" of Huawei, Apple, and Samsung, because among all smartphone manufacturers, only these three had their own chips. But then, thing...[Details]
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Circuit principle: This circuit has a charging status display function. The red light flashes when it is charging, the green light flashes when it is about to be fully charged, and the green light...[Details]
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First, let's take a look at the NANDFLASH interface: As can be seen from the figure, there are only data ports and control ports, but no address lines, so it cannot be uniformly addressed like a ne...[Details]
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1. Set obj and src
ifneq ($(OBJTREE),$(SRCTREE))
ifeq ($(CURDIR),$(SRCTREE))
you :=
else
dir := $(subst $(SRCTREE)/,,$(CURDIR))
endif
obj := $(if $(di...[Details]