The third part of the peripheral article

... 2.1 SPI introduction SPI, is the abbreviation of Serial Peripheral interface, as the name suggests is the serial peripheral interface. Motorola was first defined on its MC68HCXX family of processors. It is a high-speed full-duplex communication bus, which is proposed by Motorola. The...


Summary of common cable interface types

... title: Summary of common cable interface types Date: 2018-09-23 Tags: Hardware In daily life, when we use computers, mobile phones, tablets, there are many cable interface types that are often used, but not everyone can clearly distinguish these interfaces to avoid errors. This is the...


ZigBee TI program hodgepodge notes

... 一,环境 1, hardware 七星虫CC2530 ZigBee development board 2, software TI ZStack protocol stack 3、IDE IAR 二Notes ※ AF_DataRequest() Parameter parsing in data transmission afAddrType_t Address description structure typedef struct { Union { Uint16 shortAddr; // 16bits short address (network...


Arm-linux-gcc compiler environment build

... record, convenient to query 1.Unzip sudo tar -xvlf arm-linux-gcc-4.4.3.tar.gz 2 Create a directory sudo mkdir /usr/local/arm_4.43 3. Move the extracted files to the newly created directory sudo mv /opt/Friendly//toolschain/4.4.3/ * /usr/local/arm_4.4.3 4. Configure the environment...


[Reserved] MINI2440 TD35 P35 touch screen can not be used? Let us change the first-line touch to the four-line touch

... 本本本百事网www.100ask.org/bbs/forum.php, and sincerely thank Wei Dongshan. A lot of embedded novices like me are expected to encounter the same problem when using the mini2440 to learn touch, that is, no matter how you compare the configuration of the register with the manual, or follow the...


LeetCode solution: Substring with Concatenation of All Words

... 题要求 You are given a string, s, and a list of words,words, that are all of the same length. Find all starting indices of substring(s) in s that is a concatenation of each word in words exactly once and without any intervening characters. Example 1: Input: s = "barfoothefoobarman", words ...


How important is the pattern in the end

... The pattern of this age I saw this sentence on the Internet a few days ago: Looking down from the second floor, the eyes are full of rubbish, looking down from the 20th floor, then It is scenery. At this age, there is a new empathy for this sentence. Before I was at 大学, I saw my...


ARM NEON commonly used function summary

... original address: https://blog.csdn.net/may0324/article/details/72847800 NEON technology is a 128-bit SIMD (single-instruction, multi-data) architecture extension of the ARM CortexTM-A family of processors designed to provide flexible, powerful acceleration for consumer multimedia...


Guava (six)

... [string processing] First, the Joiner connector Joiner is used to connect string sequences through the specified separators. In addition, some property settings can make the connection of strings easier. String join = Joiner.on(",").skipNulls().join(Lists.newArrayList(1, 2, null, 3)); /...


The reset mode of the one-chip computer

... 单片机电路 reset circuit principle introduction /******************************** ************************* Analysis of a ************************* ************************************************** ********/ 一, high level reset The working principle of the reset circuit is introduced in the...