嵌入式系統(tǒng)設(shè)計lab16基于psled驅(qū)動

銷售信息 技術(shù)支 基于PS的LED驅(qū) 實驗目 實驗原 步驟與現(xiàn) 創(chuàng)建EDK工 啟動系 3.3.3測 關(guān)鍵代碼分 姓職簽日Descriptionof姓職簽日Descriptionof郵編：200436問我們的網(wǎng)站：3.PSLED3.PSLEDARMCortex-GPIO1構(gòu)（XilinxPlatformStudio）進行硬件開發(fā)，然后使用SDK（XilinxSoftwareDevelopmentKit）進行軟件開發(fā)。在本實驗中，將使用這種傳統(tǒng)的設(shè)計方法進行當然本質(zhì)上依然是使用XPS+SDK。xpsXilinxDesignToolsISEDesignSuite14.4EDKXilinxPlatformStudioXPSXPS中建立一個新的嵌入式工BaseSystemBuilder（BSB）BSB設(shè)到工程。Xilinx推薦使用BSB向?qū)Ы⑶度胧焦こ藽reateNewProjectUsingBaseSystemBuilder打開新4BSBNewProjectInterconnect4BSBNewProjectInterconnectAXIboardforyourdesignBoardboardname：zedboardzynqboardrevision:CSelectaZynqprocessingSystemPeripherals刪除所有外設(shè)，操作方法：SelectAll5New5New圖圖6開發(fā)板和系統(tǒng)SelectAll，然后點擊Remove刪除所有默認外設(shè)，如下圖所示，然后點擊778Zynq8Zynq構(gòu)XPS工具中選擇ProjectExportHardwaredesigntoSDK，將工程導入到彈出對話框中，勾選“IncludebitstreamandBMMfile”選項，點擊“Export&LaunchSDK”,將硬件導出并打開SDK軟件。WorkspaceWorkspaceLauncherWorkspace（SDK）路徑時，E:\zynq\PS_MIO\SDK\SDK_Export10FileNewApplicationProject11：SelectaFileNewApplicationProject11：SelectaXilinx>Application12：ApplicationProjectUsedefaultHardwareOSCBoardsupportCreatenewAvailableEmpty1111Selectfile->new->ApplicationNEWProjectzynq_fsbl_0zynq_fsblXilinxTools->Createzynqboot在FSBLelf中browseOutputFolder中選擇D:\img\outputCreateImagevimvimgeditzynq_led.c#-C$(KDIR)指明跳轉(zhuǎn)到內(nèi)核源碼目錄下讀取那里的Makefile；以在/dev目錄下看見該名字)使用misc_deregister注銷混雜設(shè)備led_openled_openGPIO物理地址映射成虛擬地址(在linux系統(tǒng)中我們不能直接使用物理地址)和對LED于ioremap函數(shù)將BANK0ioremap函數(shù)將BANK0設(shè)置ONE0第7位為輸出使能LEDioctlLEDioctl系統(tǒng)后在將文件拷貝到啟動SD卡中)到SD卡中CyUSBSerial_driver_v2_WHQL_certified目錄下。\目錄下的解壓到puttyputtymountSDmountSD驅(qū)動代碼分析驅(qū)動代碼分析者:edwardfor本#include<linux/init.h>#include<linux/module.h>#include<linux/fs.h>#include<asm/io.h>#includeunsignedlong#defineLED_BANK0_PA_BASE(0xe000a000)#define#defineLED_rONE0#define#define#defineLED_rONE0#definestructresourcezynq_led_resource==.endIORESOURCE_MEM//intled_open(structinode*node,structfile{unsignedlongunsignedlongstart=zynq_led_resource.start;unsignedlongsize=zynq_led_resource.end-start;LED_BANK0_VIR_ADDR=(unsignedlong)ioremap(start,size);printk("<1>[GPIOPS_BASE=uConValue=readl(LED_rDIRM0);uConValue|=(0x1<<7);uConValue=readl(LED_rONE0);uConValue|=(0x1<<7);return0;}staticlongled_ioctl(structfile{unsignedlonguConValue;{caseuConValue=readl(LED_rDATA0);uConValue|=(0x1<<7);caseuConValue=readl(LED_rDATA0);uConValue&=~(0x1<<7);intreturn-}return}staticstructfile_operationsdev_fops=return-}return}staticstructfile_operationsdev_fops==.open=.unlocked_ioctl=staticstructmiscdevicemisc=.minor=.name=.fops=staticintinit{return0;}staticvoidexit{}驅(qū)動測試代碼分析:者:edwardfor本#include<stdio.h>#include<unistd.h>#include<sys/stat.h>#include<stdlib.h>#include<fcntl.h>#include"zynq_led.h"intmain(void){intfdfd=open("/dev/zynq_led",O_RDWR);printf("opendeverror\n");return-1;}{}}本#include<stdio.h>#include<unistd.h>#include<sys/ioctl.h>#include<sys/types.h>#include<sys/stat.h>#i