原创 i2c for at24cxx
CLOCK and DATA TRANSITIONS: The SDA pin is normally pulled high with an external device. Data on the SDA pin may ch
2020-06-22 07:37:28
原创 vim insert uinicode symbol
set encoding=utf-8 insert or command mode(not normal mode)，press Ctrl+v , then u, then unicode val ctrl+v u 2018 -> ‘
2020-06-22 07:37:28
原创 clause45 VS cluause22
http://www.ieee802.org/3/efm/public/nov02/oam/pannell_oam_1_1102.pdf
2020-06-22 07:37:28
原创 FAERIE QVEENE 仙后節選
FAERIE QVEENE《仙后》Canto 第2卷第4章第33-37節 33 Betwixt them both, they haue me doen to dye, 他們母子二人想置我於死地， Through wo
2020-06-22 07:37:28
1
原创 statements
/////////////////////////////////////////// do statement while (condition); //////////////////////////////////////
2020-06-22 07:37:28
原创 copy initialization and direct initialization
string s5("hiya");// direct initialization string s6 = ("hiya");// copy initialization string s7 = "hiya";// copy init
2020-06-22 07:37:27
原创 Is bar an rvalue or an lvalue?
I posted this answer: https://stackoverflow.com/a/28459180/2642059 Which contains the following code: void foo(stri
2020-03-08 22:30:58
原创 A question about python deepcopy and shallow copy.
A question about python deepcopy and shallow copy. the post at What is the difference between a deep copy and a shallow
2020-02-23 14:06:30
原创 bublle sort
/*from small to big*/ int bubble_sort(int arry[], int size) { int outidx = 0; int inidx = 0; for (outidx =
2020-02-23 14:06:30
原创 mii/mdio
(一)MII/MDIO接口詳解 本文主要分析MII/RMII/SMII，以及GMII/RGMII/SGMII接口的信號定義，及相關知識，同時本文也對RJ-45接口進行了總結，分析了在10/100模式下和1000M模式下的設計方法。
2020-02-23 14:06:30
原创 dead loop when using unsigned char
for (unsigned char ucIdx = 0; ucIdx < iMax; ++ucIdx) { malloc mem; }
2020-02-23 14:06:30
原创 再議MII、RMII、GMII接口
(二)再議MII、RMII、GMII接口 概述： MII (Media Independent Interface(介質無關接口)或稱爲媒體獨立接口，它是IEEE-802.3定義的以太網行業標準。它包括一個數據接口和一個M
2020-02-23 14:06:30
2
原创 num of ones in int
int numofones(int iVar, int *iCnt) { *iCnt = 0; while (iVar) { *iCnt += 1; iVar = iVar & (iVar-1); } return 0;
2020-02-23 14:06:30
原创 class
/////////////////////////////////////////////// by default, the type of this is a const pointer to the noncon
2020-02-23 14:06:30
原创 spi bus
SPI是串行外設接口(Serial Peripheral Interface)的縮寫。是一種同步串行接口技術，是高速的，全雙工，同步的通信總線。 1、SPI接口的優點 支持全雙工操作； 操作簡單； 數據傳輸速率較高。 同時，它也具
2020-02-23 14:06:30