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C6745 连接问题

本人用的win7系统,CCS5.2,仿真器xds100v2,连接自己做的板子到电脑,经常出现连接失败的问题。

报错信息有3种,一共是“Device is held in reset”,另一种是“connect to PRSC failed”,最后一种是Gel文件里"Trouble Writing Memory Block at 0x1c10120 on Page 0 of Length 0x4:" 

第三种情况,报错信息很长,里面提到“Error while executing OnTargetConnect(): target access failed at *((unsigned int *) (0x01C10000+0x120))=(0x1<<PD) [6745_dsp.gel:333] at PSC0_lPSC_enable(0, 2) [6745_dsp.gel:684] at Setup_Psc_All_On() [6745_dsp.gel:37] at OnTargetConnect() .”

若不加gel文件,则能连接成功,但是系统初始化时会卡在psc使能的while循环内,通过观察寄存器PSC0_PTSTAT的最后两位在上电时为00,而PSC1_PTSTAT的最后两位在上电时就为11。

我想问下专家和各位同行前辈,能否帮助我解决下这个困扰多日的仿真器连接问题。它总是时不时的出现,让我调试过程中非常无语。拜托了!