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BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
文章源自：https://www.gandalf.site/2018/11/ble_23.html
参考低功耗蓝牙（BLE）安全初探
0x1 信道BLE的物理通道即“频道，分别是‘f=2402+k*2 MHz, k=0, … ,39’，带宽为2MHz”的40个RF Channel。
其中，有3个信道是advertising channel（广播通道）...
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
I just discovered a logical bug in my code which was causing all sorts of problems. I was inadvertently doing a bitwise AND instead of a logical AND .
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Makefile, header dependencies
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If you are using a GNU compiler, the compiler can assemble a list of dependencies for you. Makefile fragment:
depend: .depend
.depend: $(SRCS)
rm -f ./.depend
$(CC) $(CFLAGS) -MM $^ -MF ./.depend;
include .depend
or
depend: .depend
.depend: $(SRCS)
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Turning a Comma Separated string into individual rows
I have a SQL Table like this:
16 Answers
16
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Parse JSON in TSQL
Is it possible to parse JSON in TSQL ?
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9
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How do I sort strings alphabetically while accounting for value when a string is numeric?
I'm trying to sort an array of numbers that are strings and I'd like them to sort numerically.
19 Answers
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What is Model in ModelAndView from Spring MVC?
Having this basic function
7 Answers
7
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How many String objects will be created when using a plus sign?
How many String objects will be created when using a plus sign in the below code?
6 Answers
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What Does Question Mark Mean in Xcode Project Navigator?
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It's the file untracked by source control.
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Split Strings into words with multiple word boundary delimiters
I think what I want to do is a fairly common task but I've found no reference on the web. I have text with punctuation, and I want a list of the words.
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