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Android测试网速源码

于 2020-12-06 发布
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Android测试网速源码,还带有酷炫的仪表盘动画效果。测速的基本原理是通过上传、下载文件。算出一定时间内上传下载的字节数就是网速了。

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    2021-11-14 00:42:30下载
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  • ISO16750-3-2012
    ISO16750-3-2012Road vehicles — Environmentalconditions and testing for electricaland electronic equipment —Part 3:Mechanical loadsContents PageForeword.............................................................................................................................................Iso16750-3:2012[EContentsPageForewordScope12Normative references1Terms and definitions4Tests and requirements4.1ibration4.2 Mechanical shock274.3 Free fall…294.4 Surface strength/ scratch and abrasion resistance294.5 Gravel bombardmentCode letters for mechanical loads29Documentation…,…………111111130Annex A (informative) Guideline for the development of test profiles for vibration tests.32Annex B (informative) Recommended mechanical requirements for equipment depending on themounting location44Bibliography46C ISO 2012-All rights reservedIso16750-3:2012EForewordISo (the International Organization for Standardization) is a worldwide federation of national standardsbodies (Iso member bodies). The work of preparing International Standards is normally carried outthrough iso technical committees. Each member body interested in a subject for which a technicalcommittee has been established has the right to be represented on that committee. Internationaorganizations, governmental and non-governmental, in liaison with ISO, also take part in the workIso collaborates closely with the International Electrotechnical Commission (IEC) on all matters ofelectrotechnical standardizationInternational Standards are drafted in accordance with the rules given in the ISo/IEC Directives, Part 2The main task of technical committees is to prepare lnternational standards. draft InternationalStandards adopted by the technical committees are circulated to the member bodies for votingublication as an International Standard requires approval by at least 75 of the member bodiescasting a voteAttention is drawn to the possibility that some of the elements of this document may be the subject ofpatent rights. ISO shall not be held responsible for identifying any or all such patent rightsIso 16750-3 was prepared by Technical Committee ISO/TC 22, Road vehicle, Subcommittee SC 3,Electrical and electronical equipment.This third edition cancels and replaces the second edition (Iso 16750-3: 2007), which has beentechnically revisedISo 16750 consists of the following parts, under the general title road vehicles-Environmental conditionsand testing for electrical and electronic equipment:Part 1: GeneralPart 2: electrical loadsPart 3: Mechanical loadsPart 4: Climatic loadsPart 5: chemical loadso ISO 2012-All rights reservedINTERNATIONAL STANDARDIso16750-3:2012(E)Road vehicles- Environmental conditions and testing forelectrical and electronic equipmentPart 3Mechanical loads1 ScopeThis part of IS0 16750 applies to electric and electronic systems/components for road vehicles. Itdescribes the potential environmental stresses and specifies tests and requirements recommended forthe specific mounting location on/in the vehicleThis part of iso 16750 describes mechanical loads2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies For undated references, the latest edition of the referenceddocument (including any amendments applies.Iso16750-1, Road vehicles- Environmental conditions and testing forelectrical andelectronicequipment-Part 1: GeneralIEC 60068-2, 6, Environmental testing- Part 2-6: Testing, Test Fc: Vibration SinusoidalIEC60068-2, 14, Basicenvironmental testing procedures- Part 2-14: Tests-Test Nb: Change oftemperatureTEC 60068-2, 64, Environmental testing Part 2-64: Test methods -Test Fh -Vibration, broad-bandrandom(digital control)and guidanceIEC 60068-2, 80, Environmental testing- Part 2-80: Tests- Test Fi: Vibration - Mixed mode testingIEC 60068-2-31, Environmental testing procedures- Part 2: Tests; Test Ec: Free fall, Clause 5.23 Terms and definitionsFor the purposes of this document, the terms and definitions given in Iso 16750-1 app4 Tests and requirements4.1 Vibration41.1 GeneralThe vibration test metho ds specified consider various levels of vibration severities applicable to on-board electrical and electronic equipment. It is recommended that the vehicle manufacturer andsupplier choose the test method, the environmental temperature and vibration parameters dependingon the specific mounting locationFollowing the expressions in MIL-STD please noticeC ISO 2012-All rights reservedIso16750-3:2012EWhen applied properly, the environmental management and engineering processes described in this partof Iso 16750 can be of enormous value in generating confidence in the environmental worthiness andoverall durability. However, it is important to recognize that there are limitations inherent in laboratorytesting that make itimperative to use proper caution and engineering judgement when extrapolating theselaboratory results to results that may be obtained under actual service conditions. In many cases, realworld environmental stresses (singularly orin combination cannot be duplicated practically or reliably intestlaboratories. Therefore, users of this part of Iso 16750 should not assume that a system or componentthat passes laboratory tests of this part of Iso 16750 would also pass field/ fleet verification trialsThe specified values are the best estimation one can get up to the moment when results frommeasurements in the car are received - but they do not replace a car measurement!The specified values apply to direct mounting in defined mounting locations. Using a bracket formounting can resultin higher or lower loads. If the device under test ( DUT)is used in the vehicle with abracket then all vibration and mechanical shock test shall be done with this bracketCarry out the vibration with the dut suitably mounted on a vibration table. The mounting method (sused shall be noted in the test report. Carry out the frequency variation by logarithmic sweeping of 0,5octave/minute for sinusoidal tests and the sinusoidal part of sine on random tests. The scope of therecommended vibration tests is to avoid malfunctions and breakage mainly due to fatigue in the fieldTesting for wear has special requirements and is not covered in this part of ISo 16750Loads outside of the designated test frequency ranges are to be considered separatelNOTE Deviations from the load on the DUT can result, should vibration testing be carried out according tothis part of Iso 16750 on a heavy and bulky dut, as mounting rigidity and dynamic reaction on the vibrator tableexcitation are different compared to the situation in the vehicle. This deviation can be minimized by applying theaverage control method(see Annex A)Application of the weighted average control method according to IEC 60068-2, 64 is to be agreed uponSubject the dut during the vibration test to the temperature cycle according to iEC 60068-2, 14, withelectric operation according to diagram 1. Alternatively, a test at constant temperature may be agreed onOperate the dutelectrically as indicatedin Figure l at Tmin(Short functional testafterthe dUT completelyreached Tmin). This functional test shall be as short as possible- only long enough to check the properperformance of the dUt. This minimizes self-heating of the dUT. Additional electrical operation of theDUT between 210 min and 410 min of the cycle (see Figure 1)Additional drying of test chamber air is not permittedIn the vehicle, vibration stress can occur together with extremely low or high temperatures; for thisreason, this interaction between mechanical and temperature stress is simulated in the test, too. afailure mechanism is, for example, a plastic part of a system/component, which mellows due to the hightemperature and cannot withstand the acceleration under this condition2o ISO 2012-All rights reservedIso16750-3:2012[EYmax20aburditt0100200300400500600yY temperature[°C]x time [ minIa Operating mode 3.2 according to ISo 16750-1.b Operating mode 2. 1 according to ISo 16750-1One cycleFigure 1-Temperature profile for the vibration testTable 1- Temperature versus time for the vibration testTimeTemperaturemin°C0206040150-4021020300max41048020See Is016750-44.1.2 Tests4.1.2.1 Test I- Passenger car, engine4.1.2.1.1 PurposeThis test checks the dUt for malfunctions and breakage caused by vibrationThe vibrations of a piston engine can be split up into two kinds: Sinusoidal vibration which results from theunbalanced mass forces in the cylinders and random noise due to all other vibration-schemes of an engine,C ISO 2012-All rights reserved3Iso16750-3:2012Ee.g. closing of valves. In the lowest frequency range from 10 Hz to 100 Hz the influence of rough-roadconditions is taken into account. The main failure to be identified by this test is breakage due to fatigueNOTE 1 Road profile usually has negligible impact on engine-mounted components. Shock inputs are effectivelysolated by suspension, and engine-mounting systemsThe test profiles specified in the following clauses apply to loads generated by(four strokereciprocating enginesNotE 2 If the dut is to be tested for a specific resonance effect, then a resonance dwell test according to 8.3.2of IEC 60068-2, 6: 2007 can also be applied4.12.1.2Test4.1.2.1.2.1 GeneralIt is required to perform this test as a mixed mode vibration test according to IEC 60068-2, 80NOTE The test duration is based on A 4. The temperature in the chamher is above room temperature (rt)atthe end of the test (2 3/4 temperature cycles4.1.2.1.2.2 Sinusoidal vibrationPerform the test according to IEC 60068-2, 6, but using a sweep rate of s 0,5 octave/minute. Use a testduration of 22 h for each plane of the dUTUse curve l in Table 2/ Figure 2 for DUT intended for mounting on engines with 5 cylinders or fewerUse curve 2 in Table 2/Figure 2 for dUT test intended for mounting on engines with 6 cylinders or moreBoth curves may be combined to cover all engine types in one test2502001501005050100150200250300350400450500ⅩKeyamplitude of acceleration [m/s2IXfrequency [Hzcurve1(≤5 cylinders)curve 2(5 cylindersFigure 2- Vibration severity curves4o ISO 2012-All rights reservedIso16750-3:2012[ETable 2- values for max acceleration versus frequencyCurve 1(see Figure 2FrequencyAmplitude of accelerationHz100100200200240200270100440100Curve 2(see Figure 2)FrequencyAmplitude of accelerationHm/s2100100150150440150CombinationFrequencyAmplitude of accelerationH1001001501502002002402002551504401504,1.21.2.3 Random vibrationPerform the test according to IEC 60068-2, 64. Use a test duration of 22 h for each plane of the DUTThe r.m.s. acceleration value shall be 181 m/s2The psd versus frequency are referred to in Figure 3 and Table 3NoTE The Power Spectral Density(PSD)values (random vibration] are reduced in the frequency range of thesinusoidal vibration testC ISO 2012-All rights reserved5Iso16750-3:2012EY100100,110100100010000KeyY PSD [(m/s2)2/HzX frequency [Hz]Figure 3- PSD of acceleration versus frequencyTable 3- Values for frequency and PsDFrequencyPSDH:(m/s2)2/Hz1010100103000,5150020200024.1.2.1.3 RequirementBreakage shall not occur.Functional status a see iso 16750-1) is required during operating mode 3.2 as defined in ISo 16750-1and functional status C during periods with other operating modes4.1.2.2 Test II-Passenger car, gearbox4.1.2.2.1 PurposeThis test checks the dut for malfunctions and breakage caused by vibrationThe vibrations of a gearbox can be split up into two kinds which result partly from sinusoidal vibrationfrom unbalanced mass forces of the engine(e. g dominating orders) in the frequency range from 100 Hzto 440 Hz and vibration from the friction of the gear wheels and other schemes, which are tested in therandom part. In the lowest frequency range from 10 Hz to 100 Hz the influence of rough-road conditionsis taken into account The main failure to be identified by this test is breakage due to fatigueChanging the gears can create additional mechanical shock and shall be considered separatey brationsThe test profiles specified in the following subclauses apply to loads generated by gearbox vibo ISO 2012-All rights reserved
    2020-12-08下载
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  • K60的中文资料
    此文档介绍了K60单片机的一些结构功能,纯中文。K60P144M1OOSF2RM. pdfK60 Sub-Family Reference Manual, Rev. 6. Nov 201夲部分讲解如何配置芯片上的嵌套向量中断控制器。完整信息清参阅htp/www.arm.com。InterruptsModulePPBNested VectoredModuleInterrupt Controller(NVIC)Module图32嵌套向量中断控制器题日相关模块参考链接套问量中断控制器http://www.arm.com系统内存映System memory map时钟Clock distribution电源管理Power management专用外设总线ARM Cortex-M4核心 ARM Cortex-M43.22.1中断优先级器件支持16级中断优先级,因此在嵌套向量中断控制器中,每一个中断源在优先级控制寄存器IP中都有4个位。例如IPRO中3302928a7262524232221a019181716|151413121110976543210R0000006000600000W3.22.2非可屏蔽中断非可屏蔽中断的中断源来自于外部的NM引脚。此引脚是多路复用引脚,必须要配置他的功能,使其成为外部不可屏蔽中断功能引脚。322.3中断分配中断默认按照下表分配向量号:当中断使用时,此值储存在栈中。IRQ号:非核心中断源,对应的编号为终端号减16。IRQ号在ARM的NVC文档中有描述表34中断号分配址址中断编号IRQ号非优先级编中断伏先溟模块描述(1)号(2)级编号(3)ARM核心中析源0x00000000ARM内核切始牟栈指针0x00000004ARM内核初始程序计数器Editbylie:soonli@qq.comK60P144M100SF2RM. pdfK60 Sub-Family Reference Manual, Rev. 6 NoV 2010x00000082AHM内核非可屏蔽中断x00000c3ARM内核哽件故障0x000000101ARM内核存储控制器故障0x0000145ARM内核总线故障0x000000186ARM内核用故障0x000001C70x00002080x0000219x00028100x000002C11ARM内核管理程序调入0x000003012ARM内核周试监控0x000034130x0000003814ARM内核0x0000315ARM内核系统往拍定时器非核心中新源0x00000040160DMADA通道0发送完成0x000000141DMADMA通道⊥发送完成0×00004818DMAD)MA通道2发送完成000401DMA通道3发送完成0x0000020DA通道4发送完成0300052DMA通道5发送完成0x00000582DMADMA通道6发送完成0x000_005C2sDMADMA通道7发送完成0x0000006021DMA通道8发送完成0x0000006425DMADMA通道9发送完成0x0000006826⊥0DMADMA通道10发送完成0x000006C27DMADMA通道11发送完成0x00007028DMA通道12发送完成0x000007429DMA通道13发送完成0x0000087314DMA通道1发送完成0x00007C3IMA通道15发送完成0x00000803216DMADMA通道0-15故障0x00000081MCM0x00000883184闪存命令执行完成0x000008C35闪存读取冲突0x0000009036模式控制掉电中断,电检测低澌喚醒单兀注意:在需要使用低漏检测0x00000094370低漏唤醒|的时候不要禁止这个中断0x000009838看门狗看门狗中断0x0000009c39230x00000A441IICIEditbylie:soonli@qq.com4K60P144M100SF2RM. pdfK60 Sub-Family Reference Manual, Rev. 6 NoV 2010x0000A84SPD所有中断源使用一个向量x0000AC4SPI1所有中断源使用一个向量0x000000B014SPI2所有中断源使用一个向量CR’ ed Message bufi0x000000B44529CANO(0-15)0x00000846CAND总线关闭0x0000BC47错误0x000000C048CANO发送报警x00000C449CANO接收报整0x000000C850CAND唤帼0x00000CC50x0000000520x000000D1537CAN⊥5)0x000000D8CANI总线关闭0x00000DC5CAN⊥错误0x000000E05610发送报警0x0000C457接收报警0x0000E858唤醒0x0000EC59100x0000F06011l⊥0000F461JJARTO串口0状态中新源0x00000F862UARTO串口0错误中新源0y000000FC11UARTI串口1状态中断源0x00010064UARTI串口1错昃中源x0000010465UART2串口2状态中新源000001085650UART2串口2错昃中粉溴0x000067UaRT串口3状态中新源0x000011068UART串口3错误中析源0x0001146gUART4串口4状态中析源00011870UART串口4错误中析源0x0000011C715513UART串口5状态中新源0x0000120721111111UART5串5错误中析源0x00001247370x000128740x00012c75CMPO0x00003076CMPI0x000013476115CMP20x000001387815FTM0所有中断源使一个向量0x000013C7963FTM1所有中断源使用一个向量0x00001408064FTM2所有中断源使用一个向量000014481160x0000014816报警中断Editbylie:soonli@qq.comK60P144M100SF2RM. pdfK60 Sub-Family Reference Manual, Rev. 6 NoV 2010x00014C8x0001508PITPIT通道00x000001518517PITPIT通道10x0000015886017PITPIT通道20x0000015C81PITPIT通道30x0000160882180x000016489USB OTx001689074充电检测0x0000016C|91Ethernet macIEEE1588定时器中断0x000017092Ethernet mac发送中断0x0000017497719Ethernet mac接收中断0x00001789EtherneL mac错误和其他中断0x00017C950x00000180|96SDH0x00184978120DACO0x000001889DACI0x0001899TsT所有中断源使用一个向量0x0000901008120x0000194101低功耗定时器00001981020x000019c10321引因控制模块PORTA引脚中断000001A0104引却控制模块PORTB引脚中断00004105引脚控制模块PORTC引脚中断0x0001AB106引閎控制模块PORTD引脚中断0x00000⊥AC10791引脚控制模块P0RTE引脚中断0×001B01080x000011090×00010701094软中断软件中断(4)(1)表示嵌套向量中断控制器的中断源号(2)表示嵌套向量中断控制器对于响应中断的ISER,ⅠCER,ISPR,ICPR和IABR寄存器的值,计算方法是IRQ的值除以32。(3〕表示嵌套向量中断控制器对于响应中断的IPR寄存器的值,计算方法是IRQ的值狳以4(4)此中断只能被NVC寄存器置位或者清零。3.2.2.3.1确定位域和寄存器的位置,来配置一个特定的中断如果你需要配置低功耗寄存器中断,下面的表格自“中断号分配”地址中断编号1RQ号非优先级编中断优先源模块描述号(2)级编号(3)0x0000019410」2⊥低功耗定时器译者注:下面角标的注解没有被列出,请看上表末尾。1)在NⅥC寄存器中,你需要配置关于中断的信息Editbylie:soonli@qq.comK60P144M100SF2RM. pdfK60 Sub-Family Reference Manual, Rev. 6 NoV 201· NVICISER2NVICICER2· NVICISPR2· NVICICPE2NVICIABR2NVICIPR212)确定特定中淅在相对应的寄存器中的特定位域(汗,这句话怎么这么别扭)。NVICISER2, NVICICER2, NVICISPR2, NVICICPR2, NVICIABR2 7位置=IRQ/32=21NⅥCIPR21位域的起始地址=8*(IRQ/4)+4=12因为 NVICIPR的位域的4位宽,所以 NVICIPR21的范围是12-15。因此,下列的位域的位是用来配置低功耗定时器的中断的。NVICISER2[21]NVICICER2[21NVICISPR2(21NVICICPR2[21NVICIABR2[211NVICIPR21[15: 123.2.3异步唤醒中断的配置夲节概述如何配置芯片中的相应模垬。在AM的文档中有更加完整的描述信息www.armcomClock logicWake-upquesynchronousModuleWake-up InterruptController(AWIC)Module图3-3异步唤醒单元主题相关模块参考链接系统存储映射System memory mat时钟Clock distribution电源管理Powcr managcmcnt嵌套向量中断控制器NVIC唤醒请求AWIC wake-up sources3.2.3.1唤醒源器件使用一下的内部或者外部异步唤醒输入模块Editbylie:soonli@qq.comK60P144M100SF2RM. pdfK60 Sub-Family Reference Manual, Rev. 6 NoV 201唤醒源描述可用的系统复位复位引脚和看门狗(当使用LPO时钟源吋),JTAG接口低电压检测模块控制器低电压警告模块控制器引脚中断引脚控制模块,任何一个中断使能的引胭都可以吹醒系统ADC「当使用内部时钟源的时候可是实现这个功能CMP由于没有系统时钟可以使用,所以此时是无效的LIC地址匹配唤醒接收眺变唤醒USB唤醒功能唤醒低功耗定时器在Stop/ⅥPS模式下有效实时时钟在Stop/ⅦLPS模式卜有效以太网魔法包唤醒SDIIC唤陧功能唤醒IIS唤醒功能唤醒1588时钟唤醒功能唤醒TSICAN3.2.3JTAG控制器配置本节概述如何配置芯片中的相应模块。在后面专门的章节中有更全面的介绍。JTAG controller图3-4JTAG控制器表38相关信息的参考链接题相关模块参考链接仝面介绍JT△GCJTAGC信号传输设置引脚控制Signal multiplexing3.3系统模块3.3.1系统集成控制模块(SIM)配置Editbylie:soonli@qq.comK6OP144M100SF2RM. pdf K60 Sub-Family Reference Manual, Rev. 6 Nov 201本节概述如何配置芯片中的相应模块。在后面专门的章节中有更全面的介绍PeripheralbridgeegisteracceSSResetsMode controller图35系统集成控制模块表39相关信息的参考链接主题相关模块参考链接全面介绍系统集成控制模块系统存储映射Systcm memory maj时钟Clock distribution电源管理Power management3.3.2模式控制器模块本节概述如何配置芯片中的相应模块。在后面专门的章节中有更全面的介绍。PeripheralbridgeRegistResetsMode controller图3-6模式控制模块表3-10相关信息的参考链接题相关模块参考链接全面介绍模式控制模块Mode controllerEditbylie:soonli@qq.comK60P144M100SF2RM. pdfK60 Sub-Family Reference Manual, Rev. 6 NoV 201系统存储映射System memory map电源管理Power management电源管理控制器PMO3.3.3电源管理控制模块本节概述如何配置芯片中的相应模块。在后面专门的章节中有更仝面的介绍PeriphebridgeRegisteraccessPower managementcontroller(PMC)图37电源管理控制模块表3-11相关信息的参考链接主题相关模块参考链接全面介绍PMCPMC系统存储映射System memory map电源管理Powcr managcmcnt面介绍Mode controller低漏唤醒单元LLWU3.3.4低漏唤醒单元节概述如何配置芯片中的相应模块。在后面专门的章节中有更全面的介绍。Editbylie:soonli@qq.com
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