写在前面：
1.已经有很多前辈做过很优秀的记录，本篇尽量讲得详细一点，能够让新手直接上手。
2.在整个调试过程中，会遇到各种各样的问题，如果遇到问题请看第四部分，大部分问题应该能解决掉，不能解决的就评论区留言。
3.我的CCS安装路径是“C:\Ti\***”，后文如果出现，请对应你自己的安装路径
1.开发环境：CCS 5.4 、卓岚TCP&UDP调试工具
2.开发平台: Ti TMDSEVM6678LE（TMDSEVM6678LE是开发板，程序在其他6678板卡上也运行过）
3.需要工程源文件，ccs，调试助手的评论区留言！
//*************************************************************************************************//
目录
一、原理
二、调试流程
三、程序执行流程与部分程序解读
四、注意事项与遇到过的问题及解决方法
五、程序源码
1.通过UDP实现DSP与PC的通信，硬件上只需要用网线连接电脑与6678板卡即可，在程序上只是对TI已有的范例进行一些修改就能实现简单的通信。
2.板卡上电后，CCS通过JTAG连接调试板卡，则会首先从GEL的StartUp( )函数开始执行初始化，JTAG连接后执行OnTargetConnect( )函数，OnTargetConnect( )会调用Global_Default_Setup_Silent()函数中的ddr3_setup_auto_lvl_1333(0);和 configSGMIISerdes();函数完成DDR和SGMII的初始化。
3.如果要使用NDK，建立的ccs工程必须是跑sys/bios的工程。所以需要安装bios，我安装的是bios_setupwin32_6_33_06_50（正常情况下，安装ccs时已经安装了，检查下安装目录）
4. 在任何SOCKET应用程序建立之前，TCP/IP堆栈必须被正确的配置然后初始化。通常可以动态创建或者在DSP/BIOS中静态创建一个堆栈初始化任务，不管应用程序当中建立了多少SOCKET，在整个系统中只能有一个堆栈初始化任务，并且该任务会成为整个网络任务的唯一调度者，因此该任务在应用程序结束前不会返回。
堆栈初始化过程：(1)使用NC_SystemOpen()。该函数为所有网络应用程序建立堆栈和内存环境；(2)使用CfgNew()。该函数会创建一个配置句柄，利用该句柄使用CfgAddEntry()函数可以添加DHCP、DNS、HTTP等服务和配置SOCKET缓冲区大小与ARP超时参数；(3)使用NC_NetStart()。该函数根据前面的配置参数启动网络，并创建三个回调函数，分别是网络启动时只运行一次的函数、网络被关闭时只运行一次的函数、当IP地址改变时运行的函数。通常会在启动函数里面创建自己的应用程序线程，在关闭函数里面删除创建的应用程序线程。
1.首先需要安装MCSDK和NDK，一般来说安装的CCS版本不是太低，都已经自动安装这些组件了。（我记得ndk_2_21_01_38这个版本是有问题的，尽量不用这个，安装了也没关系，可以在设置里面修改成其他版本。）
我ccs安装目录下文件状态
2.导入工程
在C:\Ti\mcsdk_2_01_02_06\examples\ndk\helloWorld路径下是ndk例程的官方例程，
导入工程可以分为在它源文件上进行调试，也可以复制到其他地方调试，担心破坏掉源文件，所以这里采用把文件复制到其他路径下调试。
（1）开始导入工程
（2）工程文件选择到helloWorld或者evmc6678l都可以，因为后面还得改。第3步是把文件复制到自己的工作路径下，我的是workspace
（3）可以看到此时文件标识有感叹号，这是由于路径不对，如果编译，会报错：
Description Resource Path Location Type
gmake: *** No rule to make target `C:/Ti/workspace/udpHello.c', needed by `udpHello.obj'. helloworld_evmc6678l Unknown C/C++ Problem（4）在工程上右键，点击properties
（5）在箭头处双击，进去过file找到helloWorld.c等4个c文件的位置，也就是：C:\Ti\mcsdk_2_01_02_06\examples\ndk\helloWorld里面。就完成了修改路径
（6）修改完之后是下图的状态
（7）此时右键工程选择Rebuild Project，编译就通过了。
3.配置仿真文件
由于需要硬件仿真，需要选择仿真器类型，创建ccxml和gel文件，如果以前写过相关的ccxml和gel，只要仿真器和板卡没变，可以直接复制过来使用，就可跳过这一步，文章最后会提供我的ccxml和gel。
（1）右键工程，选择新建Target Configuration File
（2）命名为evmc6678l.ccxml
（3）选择仿真器型号和芯片
（4）配置gel文件
【Gel文件的执行时间一般在DSP connect target之后，在download代码之前。因为gel文件通常会进行一些初始化的寄存器的设置，比如memory map，PLL和DDR初始化等。所以在download之前必须初始化这些。
gel文件的脚本都可以找到的。CCS5的版本可以在这个目录下找到大部分EVM的gel脚本
ccsv5\ccs_base\emulation\boards
gel脚本类似于C语言函数，就是运行一些函数。比如DDR初始化函数。如果DDR没有初始化，是无法将代码download到DDR中去的。执行gel脚本有两种，一种是用户自己执行，另一种是CCS5自动将gel脚本关联到相关的操作中，比如connect target就自动关联了初始化PLL，初始化DDR的gel函数。
可以找个gel脚本看看，这样更有助于理解。】
双击刚刚新建的evmc6678l.ccxml文件，再点击图中位置，
（5）gel文件在CCS安装路径下的\ccsv5\ccs_base\emulation\boards里可以找到对应芯片的gel文件，最后点击save。6678是多核芯片，这里只用到了core0，所以给0核配置就可以了。也可以直接在路径中复制过来。
4.文件处理好的状态
5.IP设置
（1）由于是采取的静态IP，需要把板卡上的拨码开关设置成下图这样，（这个拨码开关决定选择dhcp还是静态IP）
（2）需要将程序中IP部分进行相应修改
（3）为了稳定，上位机使用的是一个网上的助手软件。也可以用QT或是VS编写，后面的文章会说到。下图是助手界面，可以看到相关信息，目的IP（DSP的ip）是169.254.198.113。所以需要在DSP程序中进行修改。
（4）将原来helloWorld.c里面的ip改为助手显示的IP就行
原IP
修改后的IP段程序：
/****助手IP***/
char *HostName = "tidsp";
char *LocalIPAddr = "169.254.198.113";
char *LocalIPMask = "255.255.0.0"; // Not used when using DHCP
char *GatewayIP = "169.254.1.1"; // Not used when using DHCP
char *DomainName = "demo.net"; // Not used when using DHCP
char *DNSServer = "0.0.0.0"; // Used when set to anything but zero（5）因为使用的是静态IP，不需要DHCP，在helloWorld.c里面再修改下面的一段程序
修改后的程序（注释后加一个if（1）就行了）：
// If the IP address is specified, manually configure IP and Gateway
//#if defined(_SCBP6618X_) || defined(_EVMTCI6614_) || defined(DEVICE_K2H) || defined(DEVICE_K2K)
/* SCBP6618x, EVMTCI6614, EVMK2H, EVMK2K always uses DHCP */
// if (0)
//#else
// if (!platform_get_switch_state(1))
//#endif
if(1)
{
printf("IP address is specified.\n");
CI_IPNET NA;
CI_ROUTE RT;
IPN IPTmp;6.硬件调试
（1）rebuild project之后连接好线。板卡需要电源线，仿真器，网线。
（2）点击view里面的Target configurations
（3）在弹出的界面右键ccxml文件，launch selected configuration
（4）选择0核，再点击连接
连接之后的打印信息：
C66xx_0: GEL Output: Setup_Memory_Map...
C66xx_0: GEL Output: Setup_Memory_Map... Done.
C66xx_0: GEL Output:
Connecting Target...
C66xx_0: GEL Output: DSP core #0
C66xx_0: GEL Output: C6678L GEL file Ver is 2.005
C66xx_0: GEL Output: Global Default Setup...
C66xx_0: GEL Output: Setup Cache...
C66xx_0: GEL Output: L1P = 32K
C66xx_0: GEL Output: L1D = 32K
C66xx_0: GEL Output: L2 = ALL SRAM
C66xx_0: GEL Output: Setup Cache... Done.
C66xx_0: GEL Output: Main PLL (PLL1) Setup ...
C66xx_0: GEL Output: PLL in Bypass ...
C66xx_0: GEL Output: PLL1 Setup for DSP @ 1000.0 MHz.
C66xx_0: GEL Output: SYSCLK2 = 333.3333 MHz, SYSCLK5 = 200.0 MHz.
C66xx_0: GEL Output: SYSCLK8 = 15.625 MHz.
C66xx_0: GEL Output: PLL1 Setup... Done.
C66xx_0: GEL Output: Power on all PSC modules and DSP domains...
C66xx_0: GEL Output: Security Accelerator disabled!
C66xx_0: GEL Output: Power on all PSC modules and DSP domains... Done.
C66xx_0: GEL Output: PA PLL (PLL3) Setup ...
C66xx_0: GEL Output: PA PLL Setup... Done.
C66xx_0: GEL Output: DDR3 PLL (PLL2) Setup ...
C66xx_0: GEL Output: DDR3 PLL Setup... Done.
C66xx_0: GEL Output: DDR begin (1333 auto)
C66xx_0: GEL Output: XMC Setup ... Done
C66xx_0: GEL Output:
DDR3 initialization is complete.
C66xx_0: GEL Output: DDR done
C66xx_0: GEL Output: DDR3 memory test... Started
C66xx_0: GEL Output: DDR3 memory test... Passed
C66xx_0: GEL Output: PLL and DDR Initialization completed(0) ...
C66xx_0: GEL Output: configSGMIISerdes Setup... Begin
C66xx_0: GEL Output:
SGMII SERDES has been configured.
C66xx_0: GEL Output: Enabling EDC ...
C66xx_0: GEL Output: L1P error detection logic is enabled.
C66xx_0: GEL Output: L2 error detection/correction logic is enabled.
C66xx_0: GEL Output: MSMC error detection/correction logic is enabled.
C66xx_0: GEL Output: Enabling EDC ...Done
C66xx_0: GEL Output: Configuring CPSW ...
C66xx_0: GEL Output: Configuring CPSW ...Done
C66xx_0: GEL Output: Global Default Setup... Done.（5）load .out文件
加载成功后的打印信息：
C66xx_0: GEL Output: Invalidate All Cache...
C66xx_0: GEL Output: Invalidate All Cache... Done.
C66xx_0: GEL Output: GEL Reset...
C66xx_0: GEL Output: GEL Reset... Done.
C66xx_0: GEL Output: Disable all EDMA3 interrupts and events.（6）运行DSP
运行的打印信息：
[C66xx_0] QMSS successfully initialized
CPPI successfully initialized
PA successfully initialized
TCP/IP Stack 'Hello World!' Application
TCP/IP Stack 'Hello World!' Application
PASS successfully initialized
Ethernet subsystem successfully initialized
Ethernet eventId : 48 and vectId (Interrupt) : 7
Registration of the EMAC Successful, waiting for link up ..
Network Added: If-1:169.254.198.113（7）打开助手软件
dsp的程序实现的功能是上位机向dsp发送消息，dsp收到后再回传给上位机。下图是打开助手后的状态
（8）测试结果
下图是由上位机发送一串数字，并显示接收到的消息的状态
1.首先执行EVM_init()函数，也就是在main()函数之前执行，具体设置在一个*.cfg文件中
void EVM_init()2.在main函数中执行BIOS_start()，并创建进程StackTest()
int main()
{
/* Start the BIOS 6 Scheduler */
BIOS_start ();
}3.在进程StackTest中执行了QMSS、CPPI、PA等的初始化，完成了基本网络配置
int StackTest()4.初始化platform
5.完成相应配置后启动NetworkOpen服务后，关联了dtask_udp_hello任务，等待UDP连接，并执行相关操作
static void NetworkOpen()
{
// Create our local server
hHello = DaemonNew( SOCK_DGRAM, 0, 7, dtask_udp_hello,
OS_TASKPRINORM, OS_TASKSTKNORM, 0, 1 );
}6.程序开始执行udpHello.c
1.路径不要包含非ASCII字符
2.dsp每次烧写程序都需要断电重连
3.程序如果出问题了，可以在程序中用printf("**** ");打印信息。但是printf开销很大，占用资源，完整的程序中应该少用。
4.如果遇到关于platform而出现的编译问题，参考这个链接：https://blog.csdn.net/u013368345/article/details/87905638
5. 正常来说，PC是无法识别DSP的，因为没有交互，但是能够正常通信。所以在电脑上ping的话，会显示ping不通。
6.导入工程出错，选择状态栏的project方式或者在project explore界面右键导入
1.helloWorld.c
/*
* helloWorld_bios6.c
*
* TCP/IP Stack 'Hello World!' Example ported to use BIOS6 OS.
*
* Copyright (C) 2007, 2011 Texas Instruments Incorporated - http://www.ti.com/
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
//--------------------------------------------------------------------------
// IP Stack 'Hello World!' Example
//
// This is a skeleton application, intended to provide application
// programmers with a basic Stack setup, to which they can start
// adding their code.
//
// To test it as is, use with helloWorld.exe from \winapps directory
//
#include <stdio.h>
#include <ti/ndk/inc/netmain.h>
/* BIOS6 include */
#include <ti/sysbios/BIOS.h>
/* Platform utilities include */
#include "ti/platform/platform.h"
#include "ti/platform/resource_mgr.h"
/* Platform Information - we will read it form the Platform Library */
platform_info gPlatformInfo;
//---------------------------------------------------------------------------
// Title String
//
char *VerStr = "\nTCP/IP Stack 'Hello World!' Application\n\n";
// Our NETCTRL callback functions
static void NetworkOpen();
static void NetworkClose();
static void NetworkIPAddr( IPN IPAddr, uint IfIdx, uint fAdd );
// Fun reporting function
static void ServiceReport( uint Item, uint Status, uint Report, HANDLE hCfgEntry );
// External references
extern int dtask_udp_hello();
//---------------------------------------------------------------------------
// Configuration
//
char *HostName = "tidsp";
char *LocalIPAddr = "169.254.198.113";
char *LocalIPMask = "255.255.0.0"; // Not used when using DHCP
char *GatewayIP = "169.254.1.1"; // Not used when using DHCP
char *DomainName = "demo.net"; // Not used when using DHCP
char *DNSServer = "0.0.0.0"; // Used when set to anything but zero
// Simulator EMAC Switch does not handle ALE_LEARN mode, so please configure the
// MAC address of the PC where you want to launch the webpages and initiate PING to NDK */
Uint8 clientMACAddress [6] = {0x5C, 0x26, 0x0A, 0x69, 0x44, 0x0B}; /* MAC address for my PC */
/*************************************************************************
* @b EVM_init()
*
* @n
*
* Initializes the platform hardware. This routine is configured to start in
* the evm.cfg configuration file. It is the first routine that BIOS
* calls and is executed before Main is called. If you are debugging within
* CCS the default option in your target configuration file may be to execute
* all code up until Main as the image loads. To debug this you should disable
* that option.
*
* @param[in] None
*
* @retval
* None
************************************************************************/
void EVM_init()
{
platform_init_flags sFlags;
platform_init_config sConfig;
/* Status of the call to initialize the platform */
int32_t pform_status;
/*
* You can choose what to initialize on the platform by setting the following
* flags. Things like the DDR, PLL, etc should have been set by the boot loader.
*/
memset( (void *) &sFlags, 0, sizeof(platform_init_flags));
memset( (void *) &sConfig, 0, sizeof(platform_init_config));
sFlags.pll = 0; /* PLLs for clocking */
sFlags.ddr = 0; /* External memory */
sFlags.tcsl = 1; /* Time stamp counter */
#ifdef _SCBP6618X_
sFlags.phy = 0; /* Ethernet */
#else
sFlags.phy = 1; /* Ethernet */
#endif
sFlags.ecc = 0; /* Memory ECC */
sConfig.pllm = 0; /* Use libraries default clock divisor */
pform_status = platform_init(&sFlags, &sConfig);
/* If we initialized the platform okay */
if (pform_status != Platform_EOK) {
/* Initialization of the platform failed... die */
while (1) {
(void) platform_led(1, PLATFORM_LED_ON, PLATFORM_USER_LED_CLASS);
(void) platform_delay(50000);
(void) platform_led(1, PLATFORM_LED_OFF, PLATFORM_USER_LED_CLASS);
(void) platform_delay(50000);
}
}
}
//---------------------------------------------------------------------
// Main Entry Point
//---------------------------------------------------------------------
int main()
{
/* Start the BIOS 6 Scheduler */
BIOS_start ();
}
//
// Main Thread
//
int StackTest()
{
int rc;
int i;
HANDLE hCfg;
QMSS_CFG_T qmss_cfg;
CPPI_CFG_T cppi_cfg;
/* Get information about the platform so we can use it in various places */
memset( (void *) &gPlatformInfo, 0, sizeof(platform_info));
(void) platform_get_info(&gPlatformInfo);
(void) platform_uart_init();
(void) platform_uart_set_baudrate(115200);
(void) platform_write_configure(PLATFORM_WRITE_ALL);
/* Clear the state of the User LEDs to OFF */
for (i=0; i < gPlatformInfo.led[PLATFORM_USER_LED_CLASS].count; i++) {
(void) platform_led(i, PLATFORM_LED_OFF, PLATFORM_USER_LED_CLASS);
}
/* Initialize the components required to run this application:
* (1) QMSS
* (2) CPPI
* (3) Packet Accelerator
*/
/* Initialize QMSS */
if (platform_get_coreid() == 0)
{
qmss_cfg.master_core = 1;
}
else
{
qmss_cfg.master_core = 0;
}
qmss_cfg.max_num_desc = MAX_NUM_DESC;
qmss_cfg.desc_size = MAX_DESC_SIZE;
qmss_cfg.mem_region = Qmss_MemRegion_MEMORY_REGION0;
if (res_mgr_init_qmss (&qmss_cfg) != 0)
{
platform_write ("Failed to initialize the QMSS subsystem \n");
goto main_exit;
}
else
{
platform_write ("QMSS successfully initialized \n");
}
/* Initialize CPPI */
if (platform_get_coreid() == 0)
{
cppi_cfg.master_core = 1;
}
else
{
cppi_cfg.master_core = 0;
}
cppi_cfg.dma_num = Cppi_CpDma_PASS_CPDMA;
cppi_cfg.num_tx_queues = NUM_PA_TX_QUEUES;
cppi_cfg.num_rx_channels = NUM_PA_RX_CHANNELS;
if (res_mgr_init_cppi (&cppi_cfg) != 0)
{
platform_write ("Failed to initialize CPPI subsystem \n");
goto main_exit;
}
else
{
platform_write ("CPPI successfully initialized \n");
}
if (res_mgr_init_pass()!= 0) {
platform_write ("Failed to initialize the Packet Accelerator \n");
goto main_exit;
}
else
{
platform_write ("PA successfully initialized \n");
}
//
// THIS MUST BE THE ABSOLUTE FIRST THING DONE IN AN APPLICATION before
// using the stack!!
//
rc = NC_SystemOpen( NC_PRIORITY_LOW, NC_OPMODE_INTERRUPT );
if( rc )
{
platform_write("NC_SystemOpen Failed (%d)\n",rc);
for(;;);
}
// Print out our banner
platform_write(VerStr);
//
// Create and build the system configuration from scratch.
//
// Create a new configuration
hCfg = CfgNew();
if( !hCfg )
{
platform_write("Unable to create configuration\n");
goto main_exit;
}
//
// THIS MUST BE THE ABSOLUTE FIRST THING DONE IN AN APPLICATION!!
//
rc = NC_SystemOpen( NC_PRIORITY_LOW, NC_OPMODE_INTERRUPT );
if( rc )
{
printf("NC_SystemOpen Failed (%d)\n",rc);
for(;;);
}
// Print out our banner
printf(VerStr);
//
// Create and build the system configuration from scratch.
//
// Create a new configuration
hCfg = CfgNew();
if( !hCfg )
{
printf("Unable to create configuration\n");
goto main_exit;
}
// We better validate the length of the supplied names
if( strlen( DomainName ) >= CFG_DOMAIN_MAX ||
strlen( HostName ) >= CFG_HOSTNAME_MAX )
{
printf("Names too long\n");
goto main_exit;
}
// Add our global hostname to hCfg (to be claimed in all connected domains)
CfgAddEntry( hCfg, CFGTAG_SYSINFO, CFGITEM_DHCP_HOSTNAME, 0,
strlen(HostName), (UINT8 *)HostName, 0 );
// If the IP address is specified, manually configure IP and Gateway
//#if defined(_SCBP6618X_) || defined(_EVMTCI6614_) || defined(DEVICE_K2H) || defined(DEVICE_K2K)
/* SCBP6618x, EVMTCI6614, EVMK2H, EVMK2K always uses DHCP */
// if (0)
//#else
// if (!platform_get_switch_state(1))
//#endif
if(1)
{
CI_IPNET NA;
CI_ROUTE RT;
IPN IPTmp;
// Setup manual IP address
bzero( &NA, sizeof(NA) );
NA.IPAddr = inet_addr(LocalIPAddr);
NA.IPMask = inet_addr(LocalIPMask);
strcpy( NA.Domain, DomainName );
NA.NetType = 0;
// Add the address to interface 1
CfgAddEntry( hCfg, CFGTAG_IPNET, 1, 0,
sizeof(CI_IPNET), (UINT8 *)&NA, 0 );
// Add the default gateway. Since it is the default, the
// destination address and mask are both zero (we go ahead
// and show the assignment for clarity).
bzero( &RT, sizeof(RT) );
RT.IPDestAddr = 0;
RT.IPDestMask = 0;
RT.IPGateAddr = inet_addr(GatewayIP);
// Add the route
CfgAddEntry( hCfg, CFGTAG_ROUTE, 0, 0,
sizeof(CI_ROUTE), (UINT8 *)&RT, 0 );
// Manually add the DNS server when specified
IPTmp = inet_addr(DNSServer);
if( IPTmp )
CfgAddEntry( hCfg, CFGTAG_SYSINFO, CFGITEM_DHCP_DOMAINNAMESERVER,
0, sizeof(IPTmp), (UINT8 *)&IPTmp, 0 );
}
// Else we specify DHCP
else
{
CI_SERVICE_DHCPC dhcpc;
// Specify DHCP Service on IF-1
bzero( &dhcpc, sizeof(dhcpc) );
dhcpc.cisargs.Mode = CIS_FLG_IFIDXVALID;
dhcpc.cisargs.IfIdx = 1;
dhcpc.cisargs.pCbSrv = &ServiceReport;
CfgAddEntry( hCfg, CFGTAG_SERVICE, CFGITEM_SERVICE_DHCPCLIENT, 0,
sizeof(dhcpc), (UINT8 *)&dhcpc, 0 );
}
//
// Configure IPStack/OS Options
//
// We don't want to see debug messages less than WARNINGS
rc = DBG_WARN;
CfgAddEntry( hCfg, CFGTAG_OS, CFGITEM_OS_DBGPRINTLEVEL,
CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );
//
// This code sets up the TCP and UDP buffer sizes
// (Note 8192 is actually the default. This code is here to
// illustrate how the buffer and limit sizes are configured.)
//
// UDP Receive limit
rc = 8192;
CfgAddEntry( hCfg, CFGTAG_IP, CFGITEM_IP_SOCKUDPRXLIMIT,
CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );
//
// Boot the system using this configuration
//
// We keep booting until the function returns 0. This allows
// us to have a "reboot" command.
//
do
{
rc = NC_NetStart( hCfg, NetworkOpen, NetworkClose, NetworkIPAddr );
} while( rc > 0 );
// Delete Configuration
CfgFree( hCfg );
// Close the OS
main_exit:
NC_SystemClose();
return(0);
}
//
// System Task Code [ Server Daemon Servers ]
//
static HANDLE hHello=0;
//
// NetworkOpen
//
// This function is called after the configuration has booted
//
static void NetworkOpen()
{
// Create our local server
hHello = DaemonNew( SOCK_DGRAM, 0, 7, dtask_udp_hello,
OS_TASKPRINORM, OS_TASKSTKNORM, 0, 1 );
}
//
// NetworkClose
//
// This function is called when the network is shutting down,
// or when it no longer has any IP addresses assigned to it.
//
static void NetworkClose()
{
DaemonFree( hHello );
}
//
// NetworkIPAddr
//
// This function is called whenever an IP address binding is
// added or removed from the system.
//
static void NetworkIPAddr( IPN IPAddr, uint IfIdx, uint fAdd )
{
IPN IPTmp;
if( fAdd )
printf("Network Added: ");
else
printf("Network Removed: ");
// Print a message
IPTmp = ntohl( IPAddr );
printf("If-%d:%d.%d.%d.%d\n", IfIdx,
(UINT8)(IPTmp>>24)&0xFF, (UINT8)(IPTmp>>16)&0xFF,
(UINT8)(IPTmp>>8)&0xFF, (UINT8)IPTmp&0xFF );
}
//
// Service Status Reports
//
// Here's a quick example of using service status updates
//
static char *TaskName[] = { "Telnet","HTTP","NAT","DHCPS","DHCPC","DNS" };
static char *ReportStr[] = { "","Running","Updated","Complete","Fault" };
static char *StatusStr[] = { "Disabled","Waiting","IPTerm","Failed","Enabled" };
static void ServiceReport( uint Item, uint Status, uint Report, HANDLE h )
{
printf( "Service Status: %-9s: %-9s: %-9s: %03d\n",
TaskName[Item-1], StatusStr[Status],
ReportStr[Report/256], Report&0xFF );
//
// Example of adding to the DHCP configuration space
//
// When using the DHCP client, the client has full control over access
// to the first 256 entries in the CFGTAG_SYSINFO space.
//
// Note that the DHCP client will erase all CFGTAG_SYSINFO tags except
// CFGITEM_DHCP_HOSTNAME. If the application needs to keep manual
// entries in the DHCP tag range, then the code to maintain them should
// be placed here.
//
// Here, we want to manually add a DNS server to the configuration, but
// we can only do it once DHCP has finished its programming.
//
if( Item == CFGITEM_SERVICE_DHCPCLIENT &&
Status == CIS_SRV_STATUS_ENABLED &&
(Report == (NETTOOLS_STAT_RUNNING|DHCPCODE_IPADD) ||
Report == (NETTOOLS_STAT_RUNNING|DHCPCODE_IPRENEW)) )
{
IPN IPTmp;
// Manually add the DNS server when specified
IPTmp = inet_addr(DNSServer);
if( IPTmp )
CfgAddEntry( 0, CFGTAG_SYSINFO, CFGITEM_DHCP_DOMAINNAMESERVER,
0, sizeof(IPTmp), (UINT8 *)&IPTmp, 0 );
}
}
2.udphello.c
/*
* udpHello.c
*
* This program implements a UDP echo server, which echos back any
* input it receives.
*
* Copyright (C) 2007 Texas Instruments Incorporated - http://www.ti.com/
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <ti/ndk/inc/netmain.h>
//
// dtask_udp_hello() - UDP Echo Server Daemon Function
// (SOCK_DGRAM, port 7)
//
// Returns "1" if socket 's' is still open, and "0" if its been closed
//
int dtask_udp_hello( SOCKET s, UINT32 unused )
{
struct sockaddr_in sin1;
struct timeval to;
int i,tmp;
char *pBuf;
HANDLE hBuffer;
(void)unused;
// Configure our socket timeout to be 3 seconds
to.tv_sec = 3;
to.tv_usec = 0;
setsockopt( s, SOL_SOCKET, SO_SNDTIMEO, &to, sizeof( to ) );
setsockopt( s, SOL_SOCKET, SO_RCVTIMEO, &to, sizeof( to ) );
for(;;)
{
tmp = sizeof( sin1 );
i = (int)recvncfrom( s, (void **)&pBuf, 0, (PSA)&sin1, &tmp, &hBuffer );
// Spit any data back out
if( i >= 0 )
{
sendto( s, pBuf, i, 0, (PSA)&sin1, sizeof(sin1) );
recvncfree( hBuffer );
}
else
break;
}
// Since the socket is still open, return "1"
// (we need to leave UDP sockets open)
return(1);
}