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| cpu是stm32f103rbt6,软件mdk,之前仿真一直可以,最近频频出错,不是连不上目标板就是DEBUG运行过程中自己退出DEBUG模式 1.
 Err: Bad JTAG communication:Write to IR :Expected 0x1,got 0x0(TAP Command :10)@0ff 0x5.
 RAM check failed @ address 0x20000000
 Write :0x03020100 07060504
 Read:0Xaaaaaaaa 0xaaaaaaaa
 (0 bytes of ram have been checked successfully)
 Failed to program target
 2.
 Warning:        you are using a j-link which dose not have intelligence for the selected cpu core (cortex-M3)in the firmware
 3.
 Err     Emulator has been changed or re-enumerated! 接下来错误Err    No Cortex-M device found in jtag chain.please check the jtag cable and the connected devices.在接下来   Err   flash download failed .target dll has been cancelled. 连接不上器件的时候进行仿真会出现以上错误
 4.
 segger j-flash可以连接目标板,擦除时出错Err   RAM check failed @ address 0x20000000
 Write :0x03020100 07060504
 Read:0Xaaaaaaaa 0xaaaaaaaa
 (0 bytes of ram have been checked successfully
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