dsp6657的helloworld例程测试-第二篇-CFG文件

1. 上一篇疑问，int StackTest()这个函数是怎么运行的，后来在.cfg文件找到了答案，.cfg包含丰富的信息，对于用惯C语言的，确实不太习惯

 var Memory  =   xdc.useModule('xdc.runtime.Memory');
 //使用的模块，XDCTools配置工具，
 var BIOS    =   xdc.useModule('ti.sysbios.BIOS');

 var Task    =   xdc.useModule('ti.sysbios.knl.Task');

 var HeapBuf =   xdc.useModule('ti.sysbios.heaps.HeapBuf');

 var Log     =   xdc.useModule('xdc.runtime.Log');

 /*
 ** Allow storing of task names. By default if you name a task with a friendly display name it will not be saved
 ** to conserve RAM. This must be set to true to allow it. We use friendly names on the Task List display.
 */
 //Defaults.common$.namedInstance = true;
 Task.common$.namedInstance = true;

 var Clock   =   xdc.useModule ('ti.sysbios.knl.Clock');

 /*
 ** Interface with IPC. Depending on the version of BIOS you are using the
 ** module name may have changed.
 */
 /* Use this for pre BIOS 6.30 */
 /* var Sem        =      xdc.useModule ('ti.sysbios.ipc.Semaphore'); */

 /* Use this for BIOS 6.30 plus to get the IPC module */
 var Sem    = xdc.useModule ('ti.sysbios.knl.Semaphore');

 var Hwi    = xdc.useModule ('ti.sysbios.hal.Hwi');

 var Ecm = xdc.useModule ('ti.sysbios.family.c64p.EventCombiner');

 /*
 ** Configure this to turn on the CPU Load Module for BIOS.
 **
 */
 /*
 var Load       =   xdc.useModule('ti.sysbios.utils.Load');
 Load.common$.diags_USER4 = Diags.ALWAYS_ON;
 */

 var Diags       = xdc.useModule('xdc.runtime.Diags');

 /*
 ** Sets up the exception log so you can read it with ROV in CCS
 */
 //var LoggerBuf = xdc.useModule('xdc.runtime.LoggerBuf');
 //var Exc = xdc.useModule('ti.sysbios.family.c66x.Exception');
 //Exc.common$.logger = LoggerBuf.create();
 //Exc.enablePrint = true; /* prints exception details to the CCS console */

 /*
 **  Give the Load module it's own LoggerBuf to make sure the
 **  events are not overwritten.
 */
 /* var loggerBufParams = new LoggerBuf.Params();
 loggerBufParams.exitFlush = true;
 loggerBufParams.numEntries = 64;
 Load.common$.logger = LoggerBuf.create(loggerBufParams);
 */

 /* Load the CSL package */
 var Csl                         =     xdc.useModule('ti.csl.Settings');

 /* Load the CPPI package */
 var Cppi                        =   xdc.loadPackage('ti.drv.cppi');     

 /* Load the QMSS package */
 var Qmss                        =   xdc.loadPackage('ti.drv.qmss');

 /* Load the Platform/NDK Transport/EMAC packages */
 var PlatformLib  = xdc.loadPackage('ti.platform.evmc6657l');
 var NdkTransport = xdc.loadPackage('ti.transport.ndk');
 var EmacLLD = xdc.loadPackage('ti.drv.emac');

 /*
 ** Use this load to configure NDK 2.2 and above using RTSC. In previous versions of
 ** the NDK RTSC configuration was not supported and you should comment this out.
 */
 var Global       = xdc.useModule('ti.ndk.config.Global');

 /*
 ** This allows the heart beat (poll function) to be created but does not generate the stack threads
 **
 ** Look in the cdoc (help files) to see what CfgAddEntry items can be configured. We tell it NOT
 ** to create any stack threads (services) as we configure those ourselves in our Main Task
 ** thread hpdspuaStart.
 */
 Global.enableCodeGeneration = false;

 var Startup     =   xdc.useModule('xdc.runtime.Startup');

 var System      =   xdc.useModule('xdc.runtime.System');

 /*
 ** Create a Heap.
 */
 var HeapMem = xdc.useModule('ti.sysbios.heaps.HeapMem');
 var heapMemParams = new HeapMem.Params();
 heapMemParams.size = 0x30000;
 heapMemParams.sectionName = "systemHeap";
 Program.global.heap0 = HeapMem.create(heapMemParams);

 /* This is the default memory heap. */
 Memory.defaultHeapInstance  =   Program.global.heap0;
 Program.sectMap["emacComm"] = "DDR3";
 Program.sectMap["systemHeap"] = "DDR3";
 Program.sectMap[".switch"]  = "DDR3";
 Program.sectMap[".sysmem"]  = "DDR3";
 Program.sectMap[".args"]    = "DDR3";
 Program.sectMap[".cio"]     = "DDR3";
 Program.sectMap[".far"]     =     "DDR3";
 Program.sectMap[".cinit"]     =     "DDR3";
 Program.sectMap[".bss"]        =    "DDR3";
 Program.sectMap[".rodata"]        =    "DDR3";
 Program.sectMap[".neardata"]        =    "DDR3";
 Program.sectMap[".const"]    =    "DDR3";
 Program.sectMap[".text"]    =    "DDR3";
 Program.sectMap[".code"]    =    "DDR3";
 Program.sectMap[".data"]    =    "DDR3";
 Program.sectMap["platform_lib"]     =     "DDR3";
 Program.sectMap[".far:taskStackSection"] = "L2SRAM";
 Program.sectMap[".stack"]    =    "L2SRAM";
 Program.sectMap[".far:IMAGEDATA"] = {loadSegment: "L2SRAM", loadAlign: };
 Program.sectMap[".far:NDK_OBJMEM"] = {loadSegment: "L2SRAM", loadAlign: };
 Program.sectMap[".far:NDK_PACKETMEM"] = {loadSegment: "L2SRAM", loadAlign: };

 /* Required if using System_printf to output on the console */
 SysStd                  =   xdc.useModule('xdc.runtime.SysStd');
 System.SupportProxy     =   SysStd;

 /********************************************************************************************************************
 * Define hooks and static tasks  that will always be running.                                                       *
  ********************************************************************************************************************/

 /*
 ** Register an EVM Init handler with BIOS. This will initialize the hardware. BIOS calls before it starts.
 **
 ** If yuo are debugging with CCS, then this function will execute as CCS loads it if the option in your
 ** Target Configuraiton file (.ccxml) has the option set to execute all code before Main. That is the
 ** default.
 */
 Startup.firstFxns.$add('&EVM_init');

 /*
 ** Create the stack Thread Task for our application.
 */
 var tskNdkStackTest          =   Task.create("&StackTest");
 tskNdkStackTest.stackSize      =     0x1000;
 tskNdkStackTest.priority    =     0x5;

 /*
 ** Create a Periodic task to handle all NDK polling functions.
 ** If you are using RTSC configuration with NDK 2.2 and above, this is done by default and
 ** you do not need to do this.
 */
 /*var prdNdkClkParams         =   new Clock.Params ();
 prdNdkClkParams.period      =   0x64;
 prdNdkClkParams.startFlag   =   true;
 Program.global.clockInst1   =   Clock.create("&llTimerTick", 5, prdNdkClkParams);
 */

 /*
 ** If you are using RTSC configuration with NDK 2.2 and above, this is done by default, else
 ** register hooks so that the stack can track all Task creation
 Task.common$.namedInstance  =   true;
 Task.addHookSet ({ registerFxn: '&NDK_hookInit', createFxn: '&NDK_hookCreate', });

 /* Enable BIOS Task Scheduler */
 BIOS.taskEnabled            =   true;

2. RTSC里面有包的概念，类似于java语言的包格式，如下，其实也就是函数库，也可以说是，这个工程使用这个模块，不用再C语言添加代码了。

 ti.sysbios.knl.Semaphore

3. 真正的任务创建函数，终于找到你

 var tskNdkStackTest          =   Task.create("&StackTest");
 tskNdkStackTest.stackSize      =     0x1000;
 tskNdkStackTest.priority    =     0x5;

4. 这个是启动函数

 Startup.firstFxns.$add('&EVM_init');

5. 钩子函数，和启动任务调度，每一个任务都可以有一个钩子函数，用途暂时不明白。

 Task.common$.namedInstance  =   true;
 Task.addHookSet ({ registerFxn: '&NDK_hookInit', createFxn: '&NDK_hookCreate', });

 /* Enable BIOS Task Scheduler */
 BIOS.taskEnabled            =   true;

6. 不是很习惯，非C语言的配置方式。