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1 #ifndef __SYSTEM_H__ 2 #define __SYSTEM_H__ 3 4 #include 5 #include 6 7 #include "bsp.h" 8 9 extern void sys_srand( unsigned int seed );10 ext...
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posted @ 2015-07-16 14:58
IAmAProgrammer
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1 MODULE ARM_MEMORY 2 3 PUBLIC ARM_MEMCPY 4 PUBLIC ARM_MEMSET 5 PUBLIC ARM_MEMSET8 6 PUBLIC ARM_M...
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posted @ 2015-07-16 14:55
IAmAProgrammer
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这里比较下容易混淆的四条指令，已经在这4条指令的混淆上花费了很多精力，现在做个小结，LDR，STR，LDM，STM这四条指令，关于LDM和STM的说明，见另外一个说明文件，说明了这两个文件用于栈操作时的注意事项。（1）LDR：L表示LOAD，LOAD的含义应该理解为：Load from memory...
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posted @ 2015-07-13 16:19
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The baud rate for the receiver and transmitter (Rx and Tx) are both set to the same valueasprogrammed in the Mantissa and Fraction values of USARTDIV....
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posted @ 2015-07-12 23:32
IAmAProgrammer
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类似的一个问题是项目根目录下可能有logs一类的目录，我们希望他人把仓库clone下来的时候能够已经携带了这个目录，但又不希望让这个目录中的日志文件进版本库。之前看到一些项目用了一种比较 ugly 的做法：在logs下建立一个.gitkeep空文件（git 无法版本控制没有任何文件的空目录），然后再...
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posted @ 2015-07-08 23:15
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the difference between an embOS interrupt and a zero latency interrupt is the interrupt priority level and the usage of OS_EnterInterrupt()/OS_LeaveIn...
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posted @ 2015-07-07 13:27
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I’m confused about unaligned memory accesses on ARM.My understanding was that they’re not allowed — that is,dereferencing a 32-bit value from a pointe...
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posted @ 2015-07-04 17:58
IAmAProgrammer
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How to create .gitignore fileI need to add some rules to my.gitignorefile, however, I can't find it in my project folder. Isn't it created automatical...
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posted @ 2015-07-01 18:03
IAmAProgrammer
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How do I call a C function in another module from inline assembler in IAR EWARM?I have a bit of assembly in a hard fault handler.The assembly is basic...
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posted @ 2015-07-01 10:56
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Error [Og005] + [Og006] when using inline assemblerEW targets:430, ARM, AVREW component:C/C++ compilerLast update:April 3, 2013Problem:When compiling ...
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posted @ 2015-07-01 10:48
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如果只想简单的设置，可进行如下设置 Tools->IDE Options->Editor->Colors and Fonts->Editor Font->Font 但是这里边似乎也没有什么舒服的字体，在网上找了找，还真找到了一个比较不错的字体，现呈现给大家 IAR的 用户配置文件 在这里进行替换即可
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posted @ 2015-06-30 23:09
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https://www.kernel.org/doc/Documentation/crc32.txtA brief CRC tutorial.A CRC is a long-division remainder. You add the CRC to the message, and the wh...
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posted @ 2015-06-29 02:31
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AN4187 - Using the CRC peripheral in the STM32 familyAt start up, the algorithm sets CRC to the Initial_Crc XOR with the Input_Data.Once CRC MSB is eq...
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posted @ 2015-06-29 00:14
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http://www.cardwerk.com/smartcards/smartcard_standard_ISO7816-4_annex-a.aspxAnnex A: Transportation of APDU messages by T=0A.1 Case 1A.2 Case 2 ShortA...
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posted @ 2015-06-28 15:22
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http://pcsclite.alioth.debian.org/ccid_extended_apdu.htmlTo be able to use an extended APDU you need to have:A T=1 cardA smart card reader working in ...
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posted @ 2015-06-28 15:09
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http://www.cardwerk.com/smartcards/smartcard_standard_ISO7816-4_7_transmission_interindustry_commands.aspx7. Transmission-oriented Interindustry Comma...
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posted @ 2015-06-28 14:06
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/* The Quest Operating System * Copyright (C) 2005-2010 Richard West, Boston University * * This program is free software: you c...
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posted @ 2015-06-28 01:33
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Everyone knows that STM32F1xx, STM32F2xx, STM32F4xx have a hardware unit with a polynomial CRC32 0x04C11DB7.And he, in general, work.But only a checks...
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posted @ 2015-06-27 23:07
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/关闭警告#pragma diag_suppress=Pe940uint8_t GetMyData(void){ asm(“MOV R0, #0x550F”);}//恢复警告#pragma diag_warning=Pe940
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posted @ 2015-06-27 18:51
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http://www.barrgroup.com/Embedded-Systems/How-To/Additive-ChecksumsCRC Series, Part 1: Additive ChecksumsSat, 2007-12-01 23:21-webmasterbyMichael Barr...
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posted @ 2015-06-27 13:46
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Acquired from: ftp.adelaide.edu.au:/pub/rocksoft/crc_v3.txt or ftp://ftp.rocksoft.com/papers/crc_v3.txt or http://www.repairfaq.org/filipg/LINK/...
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posted @ 2015-06-27 13:11
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// STM32 CRC32 Test App - sourcer32@gmail.com#include #include DWORD Crc32( DWORD Crc, DWORD Data ){ int i; Crc = Crc ^ Data; for ( i = 0; i > ...
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posted @ 2015-06-27 13:09
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uint32_t reverse_32( uint32_t data ){ asm("rbit r0,r0"); return data;};uint32_t crc32_ether( char *buf, int len, int clear ){ uint32_t *p = (uint32...
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posted @ 2015-06-27 13:06
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http://supp.iar.com/Support/?note=64424&from=note+11927BackgroundThe STM32 devices from ST Micro have a built-in hardware CRC32 calculator. (So using ...
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posted @ 2015-06-27 12:41
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对于STM32的32位CRC，如果假定它的一个主要目的是为了校验往内部FLASH存储数据的可靠性，那么（余数）初值是全1当然是比较合理的。由于STM32的32位CRC是纯32位，即每次必须输入32位的数，所以如果数据不到32位，应该往低位用1来填充比较合理；另外，如果输入数据是 "1234"－0x3...
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posted @ 2015-06-27 12:36
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So, lets look at how CBC works first. The following picture shows the encryption when using CBC (in this case, using AES as the cipher).Basically, Cip...
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posted @ 2015-06-27 00:01
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http://speakspeak.com/resources/english-grammar-rules/various-grammar-rules/either-neither-bothOne of the tricky things abouteither,neitherandbothis k...
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posted @ 2015-06-26 23:28
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http://www.usingenglish.com/quizzes/answers.php?quiz_id=44This page displays the answers to the 'Both, Either & Neither' quiz.Q1 -____ were ill so the...
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posted @ 2015-06-26 23:26
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http://www.grammar.cl/english/both-either-neither.htmBoth, Either, Neither Summary ChartWe useboth,eitherandneitherto refer to two people or things.BO...
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posted @ 2015-06-26 23:22
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How to convert a byte to its binary string representationFor example, the bits in a byteBare10000010, how can I assign the bits to the stringstrlitera...
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posted @ 2015-06-26 11:53
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how convert large HEX string to binaryI have a string with 14 characters . This is a hex represantation of 7bytes. I want to convert it to binary.int3...
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posted @ 2015-06-26 02:53
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http://codereview.stackexchange.com/questions/2050/tiny-encryption-algorithm-tea-for-arbitrary-sized-data#ifndef __TEA.H__#define __TEA.H__#include vo...
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posted @ 2015-06-25 18:59
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/* Validation sets: * * Single-length key, single-length plaintext - * Key : 0123 4567 89ab cdef * Plain : 0123 4567 89ab cde7 * Cipher : c957 442...
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posted @ 2015-06-25 18:38
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IELFTOOL Checksum - Basic actionsEW targets:ARM, RH850, RX, SH, STM8EW component:General issuesLast update:September 6, 2013Below follows the steps ne...
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posted @ 2015-06-23 02:03
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#include // The type of a pointer into the init table.typedef void const * table_ptr_t;// The type of an initialization routine. It takes a pointer to...
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posted @ 2015-06-22 18:47
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http://blog.grexit.com/manage-data-across-clouds/That the average small business uses a cloud service to enable collaboration and backup is pretty muc...
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posted @ 2015-06-21 15:12
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支持多种服务器和主流云网盘进行同步http://www.icecoldapps.com/Unlock Code :xda201506Unlock Code : icecoldapps201506Download :Synchronize Ultimate APK 2.8.22Synchronize ...
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posted @ 2015-06-21 12:02
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Table of contentList of test vectors for AES/ECB encryption modeAES ECB 128-bit encryption modeAES ECB 128-bit encryption modeAES ECB 128-bit encrypti...
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posted @ 2015-06-19 23:26
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This optimized AES implementation conforms to FIPS-197.aes.h#ifndef _AES_H#define _AES_H#ifndef uint8#define uint8 unsigned char#endif#ifndef uint32...
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posted @ 2015-06-19 22:46
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http://ark.intel.com/compare/52275,65728Product NameIntel® Xeon® Processor E3-1260L (8M Cache, 2.40 GHz)Intel® Xeon® Processor E3-1265L v2 (8M Cache, ...
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posted @ 2015-06-18 22:25
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