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Ralink_SDK_User_Manual_4.1包括MTK 7620

非常详尽的Ralink系列WIFI芯片无线路由设备开发指南,包括RT2880、3052、3883、3352、5350、6855、MT7620等全系列,对于Uboot、MIPS-Linux、Ralink-APP等模块开发给出了图文并茂的文档说明。
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RALINK AP SDK 4.1.0.0 User’s Manual
MediaTek Inc.
RALINK AP SDK 4.1.0.0 USER’s
MANUAL
Copyright © 2012 MediaTek Inc.
All Rights Reserved.
This document is property of Ralink Technology Corporation Transmittal, receipt, or possession of
this document does not express, license, or imply any rights to use, sell, design, or manufacture from
this information or the software documented herein. No reproduction, publication, or disclosure of this
information, in whole or in part, shall be allowed, unless the prior written consent of Ralink
Technology Corporation is obtained.
NOTE: THIS DOCUMENT CONTAINS SENSITIVE INFORMATION AND HAS RESTRICTED
DISTRIBUTION.

RALINK AP SDK 4.1.0.0 User’s Manual
Page 2 of 145
Proprietary Notice and Liability Disclaimer
The confidential Information, technology or any Intellectual Property embodied therein, including
without limitation, specifications, product features, data, source code, object code, computer
programs, drawings, schematics, know-how, notes, models, reports, contracts, schedules and
samples, constitute the Proprietary Information of Ralink (hereinafter "Proprietary Information")
All the Proprietary Information is provided "AS IS". No Warranty of any kind, whether express or
implied, is given hereunder with regards to any Proprietary Information or the use, performance or
function thereof. Ralink hereby disclaims any warranties, including but not limited warranties of
non-infringement, merchantability, completeness, accuracy, fitness for any particular
purpose, functionality and any warranty related to course of performance or dealing of Proprietary
Information. In no event shall Ralink be liable for any special, indirect or consequential damages
associated with or arising from use of the Proprietary Information in any way, including any loss of
use, data or profits.
Ralink retains all right, title or interest in any Proprietary Information or any Intellectual Property
embodied therein. The Proprietary Information shall not in whole or in part be reversed, decompiled
or disassembled, nor reproduced or sublicensed or disclosed to any third party without Ralink's prior
written consent.
Ralink reserves the right, at its own discretion, to update or revise the Proprietary Information from
time to time, of which Ralink is not obligated to inform or send notice. Please check back if you have
any question. Information or items marked as "not yet supported" shall not be relied on, nor taken
as any warranty or permission of use.
MediaTek Inc. (Taiwan)
5F, No.5, Tai-Yuen 1
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Street,
ChuPei City
HsinChu Hsien 302, Taiwan, ROC
Tel +886-3-560-0868
Fax +886-3-560-0818
Sales Taiwan: Sales@ralinktech.com.tw
Technical Support Taiwan: FAE@ralinktech.com.tw
http://www.ralinktech.com/

RALINK AP SDK 4.1.0.0 User’s Manual
Page 3 of 145
TABLE OF CONTENTS
1 SDK History ................................................................................................................................... 9
2 Version History............................................................................................................................ 14
3 Overview of the Ralink AP Demo Board ................................................................................. 15
3.1 RT2880 ................................................................................................................................... 15
3.2 RT3052 ................................................................................................................................... 19
3.3 RT3883 ................................................................................................................................... 21
3.4 RT3352 ................................................................................................................................... 24
3.5 RT5350 ................................................................................................................................... 26
3.6 RT6855 ................................................................................................................................... 29
3.7 RT6856 ................................................................................................................................... 30
3.8 MT7620 ................................................................................................................................... 32
4 AP SDK source code overview ................................................................................................ 36
5 Tool-chain .................................................................................................................................... 37
5.1 Install toolchain ...................................................................................................................... 37
5.2 Install LZMA Utility................................................................................................................. 37
5.3 Install mksquashfs utility ....................................................................................................... 37
6 Boot loader .................................................................................................................................. 39
6.1 Uboot Configuration .............................................................................................................. 39
6.2 Build the uboot Image ........................................................................................................... 40
6.3 Burn the uboot image ........................................................................................................... 40
7 User Library ................................................................................................................................. 42
7.1 Library Configuration............................................................................................................. 42

RALINK AP SDK 4.1.0.0 User’s Manual
Page 4 of 145
7.2 Library Porting ........................................................................................................................ 42
7.3 Build user library .................................................................................................................... 43
8 User Application.......................................................................................................................... 44
8.1 Ralink Proprietary Applications ........................................................................................... 44
8.1.1 ATED ............................................................................................................................. 44
8.1.2 REG ............................................................................................................................... 44
8.1.3 FLASH ........................................................................................................................... 44
8.1.4 GPIO .............................................................................................................................. 45
8.1.5 MII_MGR ....................................................................................................................... 45
8.1.6 MTD ............................................................................................................................... 46
8.1.7 NVRAM.......................................................................................................................... 47
8.1.8 SPICMD ........................................................................................................................ 48
8.1.9 I2CCMD ......................................................................................................................... 48
8.1.10 Script .............................................................................................................................. 49
8.2 goahead .................................................................................................................................. 49
8.3 nvram library .......................................................................................................................... 49
8.4 wsc_upnp ................................................................................................................................ 49
8.5 iptables .................................................................................................................................... 49
8.6 ntpclient ................................................................................................................................... 49
8.7 mtd-utils .................................................................................................................................. 50
8.8 ppp-2.4.2 ................................................................................................................................. 50
8.9 bridge-utils .............................................................................................................................. 50
8.10 wireless_tools ......................................................................................................................... 50

RALINK AP SDK 4.1.0.0 User’s Manual
Page 5 of 145
8.11 inadyn ...................................................................................................................................... 50
8.12 zebra-0.95a_ripd .................................................................................................................... 50
8.13 wpa_supplicant-0.5.7 ............................................................................................................ 51
8.14 totd-1.5 .................................................................................................................................... 51
8.15 samba-3.0.2 ........................................................................................................................... 51
8.16 radvd-1.0 ................................................................................................................................. 51
8.17 pptp-client ............................................................................................................................... 51
8.18 rp-l2tp-0.4 ............................................................................................................................... 51
8.19 ctorrent-dnh3.2 ...................................................................................................................... 52
8.20 dhcp6 ....................................................................................................................................... 52
8.21 dnsmasq-2.40 ........................................................................................................................ 52
8.22 igmpproxy ............................................................................................................................... 52
8.23 matrixssl-1.8.3 ........................................................................................................................ 52
8.24 rp-pppoe-3.8 ........................................................................................................................... 53
8.25 usb_modeswitch-0.9.5 .......................................................................................................... 53
8.26 Port new user application ..................................................................................................... 53
9 Linux Kernel ................................................................................................................................ 56
9.1 Linux configuration ................................................................................................................ 56
9.2 Change Flash/DRAM Size ................................................................................................... 58
9.3 Change Switch Controller in RT2880 Platform ................................................................. 58
9.4 Update User/Kernel default settings ................................................................................... 59
9.5 Compile Linux image ............................................................................................................ 60
9.6 Port new Linux kernel module ............................................................................................. 60
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