使用并口连接TQ2440开发板时出现提示 Unknown target.Please updata the target list via target manger or try designate the target manually.
有时还会提示找不到开发板。
设置是按照使用手册一步一步设置的,真晕!
1、计算机并口(主板自带)设置为EPP;
2、开发板设置为从Nor Flash启动,连接并口到计算机,连接Jtag口到开发板,上电;
3、安装H-JTAG软件,设置并口参数;
4、开始连接,有时会先找不到Target,经过重新上电或复位后会出现不Unknown target.Please updata the target list via target manger or try designate the target manually!
连线没有问题
串口提示信息:
##### EmbedSky BIOS for SKY2440/TQ2440 #####
Press Space key to Download Mode !
##### Boot for Nor Flash Main Menu #####
[1] Download u-boot or STEPLDR.nb1 or other bootloader to Nand Flash
[2] Download Eboot to Nand Flash
[3] Download Linux Kernel to Nand Flash
[5] Download CRAMFS image to Nand Flash
[6] Download YAFFS image to Nand Flash
[7] Download Program (uCOS-II or TQ2440_Test) to SDRAM and Run it
[8] Boot the system
[9] Format the Nand Flash
[0] Set the boot parameters
[a] Download User Program (eg: uCOS-II or TQ2440_Test)
[b] Download LOGO Picture (.bin) to Nand Flash
[l] Set LCD Parameters
[o] Download u-boot to Nor Flash
[r] Reboot u-boot
[t] Test Linux Image (zImage)
[q] quit from menu
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