Zing参考设计.docx

按键点灯设计 （使用14.3版本软件）本参考设计基于zing开发板。主要是熟悉zynq器件开发及调试的基本步骤。主要包括，uart测试、采用pl端逻辑设计ps外设、axi总线chipscope调试、定时器中断设计、按键及点灯的设计。一、建立工程：1、 打开planahead开始设计。2、 点击create new project建立新的工程- next- 填好项目名称和文件路径 next - rtl project - next - next - next 直至界面：3、 如图，选择xilinx zc702开发板 next finish二、添加arm处理器 1、点击add sources -选择add or create embedded sources - next -create sub-design - 填入处理器名称 - finish 2、弹出对话框，是否使用base system builder，选择yes 3、默认采用axi总线架构，点ok 4、默认选择xilinx zc702开发板，点next 5、remove gpio_sw and leds_4bits，点finish 此时已添加和ps部分，并参照xilinx zc702开发板设计配置好外设、时钟、ddr内存等。三、添加pl部分的外设，并连接到ps上 1、添加一个外部按键。点击ip catalog- 展开general purpose io菜单 -双击axi general purpose io 2、点击yes - 把channel 1中的gpio data channel width改为1，点击ok，用pl部分逻辑实现一个板上按键。4、 弹出对话框，是否把添加的ip连接到处理器总线上。默认选择，点ok。 5、此时在zynq的菜单下可以看到，ps部分的gp0口被使能了。刚加入的gpio ip连接到了处理器上。点击address菜单可以看到给其分配了0x41200000地址。6、同样的方法加入定时器ip。双击axi timer/counter - yes - ok - ok 7、切换到ports菜单，展开processing_system7_0，点击l to h: no connection 8、把定时器的中断信号添加到右边，可以看到系统自动给其分配了中断号91，点击ok四、使能ps部分的外设gpio，并使用emio1、切换到zynq菜单，点击i/o peripherals 2、把gpio改为用emio，把位宽改为1。用emio实现一个板上按键。 3、切换到ports菜单，把gpio的管脚连接到外部。五、添加chipscope模块用来观察axi总线上的信号。 1、在ip catalog中找到chipscope axi monitor ip，双击添加，点yes，点ok。 2、双击添加chipscope intergrated controller，点yes，点ok。 3、切换到bus interfaces菜单。把mon_axi连接到gpio的s_axi总线上，用于观测pl部分gpio的总线信号。 4、切换到ports菜单，把chipscope_icon_0中的control0信号连接到chipscope_axi_monitor_0的chipscope_icon_control信号上。5、 点击drc，检查设计中是否存在错误。至此edk部分的完成。关闭edk工具，转回到planahead界面。六、添加顶层文件，管脚约束，导出硬件至sdk中。 1、在design sources中找到处理器，点右键选择create top hdl自动生成顶层文件。 2、点击add sources，添加约束文件，next- create file -输入约束名称- ok - finish 3、在constraints中找到刚添加的约束文件，双击打开。按照zing开发板的连接分配好管脚。pl部分的gpio按键指定到pu1，ps部分gpio按键指定到pu2。 4、点击generate bitstream生成pl部分的bit文件。5、待编译完成后，点击file -export - export bitstream file，输入文件名，点击save。导出pl部分的bit文件便于之后的设计。 6、点击file -export - export hardware for sdk，勾选launch sdk，点ok。七、在sdk中设计软件程序。 1、进入到sdk界面，点击file - new - application project，输入软件工程名，选择hello world，点finish。建立了一个简单的在串口上打印hello world的工程，并自动编译驱动库及程序。 2、展开led目录下src菜单，双击hellowrold.c打开文件。 3、用以下程序替换helloword.c中的内容。点击保存，程序自动编译。/* copyright (c) 2009 xilinx, inc. all rights reserved.* xilinx, inc.* xilinx is providing this design, code, or information as is as a* courtesy to you. by providing this design, code, or information as* one possible implementation of this feature, application or* standard, xilinx is making no representation that this implementation* is free from any claims of infringement, and you are responsible* for obtaining any rights you may require for your implementation.* xilinx expressly disclaims any warranty whatsoever with respect to* the adequacy of the implementation, including but not limited to* any warranties or representations that this implementation is free* from claims of infringement, implied warranties of merchantability* and fitness for a particular purpose.*/* helloworld.c: simple test application*/#include #include platform.h#include xil_types.h#include xgpio.h#include xtmrctr.h#include xparameters.h#include xgpiops.h#include xil_io.h#include xil_exception.h#include xscugic.hstatic xgpiops psgpioinstanceptr;extern xgpiops_config xgpiops_configtablexpar_xgpiops_num_instances;static int ipinnumber = 10;xscugic interruptcontroller; /* instance of the interrupt controller */static xscugic_config *gicconfig;/* the configuration parameters of thecontroller */static int interruptflag;void print(char *str);extern char inbyte(void);void timer_interrupthandler(void *data, u8 tmrctrnumber)print(rn);print(rn);print(rn);print( inside timer isr n r );xtmrctr_stop(data,tmrctrnumber);/ ps gpio writtingprint(led ds23 turned on rn);xgpiops_writepin(&psgpioinstanceptr,ipinnumber,1);xtmrctr_reset(data,tmrctrnumber);print( timer isr exitn n r);print(rn);print(rn);print(rn);interruptflag = 1;int setupinterruptsystem(xscugic *xscugicinstanceptr)/* connect the interrupt controller interrupt handler to the hardware* interrupt handling logic in the arm processor.*/xil_exceptionregisterhandler(xil_exception_id_int,(xil_exceptionhandler) xscugic_interrupthandler,xscugicinstanceptr);/* enable interrupts in the arm*/xil_exceptionenable();return xst_success;int scugicinterrupt_init(u16 deviceid,xtmrctr *timerinstanceptr)int status;/* initialize the interrupt controller driver so that it is ready to* use.* */gicconfig = xscugic_lookupconfig(deviceid);if (null = gicconfig) return xst_failure;status = xscugic_cfginitialize(&interruptcontroller, gicconfig,gicconfig-cpubaseaddress);if (status != xst_success) return xst_failure;/* setup the interrupt system* */status = setupinterruptsystem(&interruptcontroller);if (status != xst_success) return xst_failure;/* connect a device driver handler that will be called when an* interrupt for the device occurs, the device driver handler performs* the specific interrupt processing for the device*/status = xscugic_connect(&interruptcontroller,xpar_fabric_axi_timer_0_interrupt_intr,(xil_exceptionhandler)xtmrctr_interrupthandler,(void *)timerinstanceptr);if (status != xst_success) return xst_failure;/* enable the interrupt for the device and then cause (simulate) an* interrupt so the handlers will be called*/xscugic_enable(&interruptcontroller, xpar_fabric_axi_timer_0_interrupt_intr);return xst_success;int main()static xgpio gpioinstance_ptr;xgpiops_config*gpioconfigptr;xtmrctr timerinstanceptr;int xstatus;u32 readstatus=0,oldreadstatus=0;/u32 effectiveadress = 0xe000a000;int ipinnumberemio = 54;u32 upindirectionemio = 0x0;/ input pin/ pin directionu32 upindirection = 0x1;int exit_flag,choice,internal_choice;init_platform();/* data = *(u32 *)(0x42800004);print(ok n);data = *(u32 *)(0x41200004);print(ok-1 n);*/print(# application starts #nr);print(rn);/step-1 :axi gpio initialization/xstatus = xgpio_initialize(&gpioinstance_ptr,xpar_axi_gpio_0_device_id);if(xst_success != xstatus)print(gpio init failednr);/step-2 :axi gpio set the direction/xgpio_setdatadirection(&gpioinstance_ptr, 1,1);/step-3 :axi timer initialization/xstatus = xtmrctr_initialize(&timerinstanceptr,xpar_axi_timer_0_device_id);if(xst_success != xstatus)print(timer init failed nr);/step-4 :set timer handler/xtmrctr_sethandler(&timerinstanceptr,timer_interrupthandler,&timerinstanceptr);/step-5 :setting timer reset value/xtmrctr_setresetvalue(&timerinstanceptr,0, /change with generic value0xf0000000);/step-6 :setting timer option (interrupt mode and auto reload )/xtmrctr_setoptions(&timerinstanceptr,xpar_axi_timer_0_device_id,(xtc_int_mode_option | xtc_auto_reload_option );/step-7 :ps gpio intialization/gpioconfigptr = xgpiops_lookupconfig(xpar_ps7_gpio_0_device_id);if(gpioconfigptr = null)return xst_failure;xstatus = xgpiops_cfginitialize(&psgpioinstanceptr,gpioconfigptr,gpioconfigptr-baseaddr);if(xst_success != xstatus)print( ps gpio init failed nr);/step-8 :ps gpio pin setting to output/xgpiops_setdirectionpin(&psgpioinstanceptr, ipinnumber,upindirection);xgpiops_setoutputenablepin(&psgpioinstanceptr, ipinnumber,1);/step-9 :emio pin setting to input port/xgpiops_setdirectionpin(&psgpioinstanceptr,ipinnumberemio,upindirectionemio);xgpiops_setoutputenablepin(&psgpioinstanceptr, ipinnumberemio,0);/step-10 : scugic interrupt controller intialization/registration of the timer isr/xstatus=scugicinterrupt_init(xpar_ps7_scugic_0_device_id,&timerinstanceptr);if(xst_success != xstatus)print( :( scugic init failed nr);/step-11 :user selection procedure to select and execute tests/exit_flag = 0;while(exit_flag != 1)print( select the operation from the below menu rn);print(# menu starts #rn);print(press 1 to use normal gpio as an input (sw5 switch)rn);print(press 2 to use emio as an input (sw7 switch)rn);print(press any other key to exitrn);print( # menu ends #rn);choice = inbyte();printf(selection : %c rn,choice);internal_choice = 1;switch(choice)/ use case for axi gpio/case 1:exit_flag = 0;print(press switch sw5 push button on board rn);print( rn);while(internal_choice != 0)readstatus = xgpio_discreteread(&gpioinstance_ptr, 1);if(1= readstatus & 0 = oldreadstatus )print($rn);print(sw5 push button pressed nr);print(led ds23 turned off rn);xgpiops_writepin(&psgpioinstanceptr,ipinnumber,0);/start timerxtmrctr_start(&timerinstanceptr,0);print(timer start nr);/wait for interrupt;print(wait for the timer interrupt to tigger rn);print($rn);print( rn);while(interruptflag != 1);interruptflag = 0;print( #rn );print(press 0 to go to main menu nr );print(press any other key to remain in axi gpio test nr );print( #rn );internal_choice = inbyte();printf(select = %c rn,internal_choice);if(internal_choice != 0)print(press switch sw5 push button on board rn);oldreadstatus = readstatus;print( rn);print( rn);break;case 2 :/usecase for ps gpio/exit_flag = 0;print(press switch sw7 push button on board rn);print( rn);while(internal_choice != 0)readstatus = xgpiops_readpin(&psgpioinstanceptr,ipinnumberemio);if(1= readstatus & 0 = oldreadstatus )print($rn);print(sw7 push button pressed nr);print(led ds23 turned off rn);xgpiops_writepin(&psgpioinstanceptr,ipinnumber,0);/start timerxtmrctr_start(&timerinstanceptr,0);print(timer start nr);/wait for interrupt;print(wait for the timer interrupt to tigger rn);print($rn);print( rn);while(interruptflag != 1);interruptflag = 0;print( #rn );print(press 0 to go to main menu nr );print(press any other key to remain in emio test nr );print( #rn );internal_choice = inbyte();printf(select = %c rn,internal_choice);if(internal_choice != 0)print(press switch sw7 push button on board rn);oldreadstatus = readstatus;print( rn);print( rn);break;default :exit_flag = 1;break;print(rn);print(*rn);print(bye rn);print(*rn);cleanup_platform();return 0;八、采用jtag模式调试程序。 1、按照下图，接好电源、jtag电缆、uart口。模式管脚js3、js4、js5、js6、js7的连接见图中所示，跳线均接2、3针。 2、点击xilinx tools - program fpga，指定之前生成的pl部分下载文件，点击program。 3、切换到terminal 1串口调试工具，点击settings，设置好串口，点击ok，串口自动连接。 4、在project explorer菜单下，选择软件工程，右键run as - run configurations，点击xilinx c/c+ elf，按照图中选择需要debug的工程，点击run。6、 在terminal 1中出现如下打印信息：# application starts # select the operation from the below menu # menu starts #press 1 to use normal gpio as an input (pu1