CC2640R2F在ccs中烧写工程失败求帮助！

利用CCS对CC2640R2F板子在烧写官方给的simplelink_cc2640r2_sdk_3_40_00_10中的rtls_slave的工程时，总是失败，且给的失败原因是：

Cortex_M3_0: Can't Run Target CPU: (Error -2134 @ 0x0) Unable to control device execution state. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 8.2.0.00004)
Cortex_M3_0: Error: (Error -1170 @ 0x0) Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 8.2.0.00004)
Cortex_M3_0: Unable to determine target status after 20 attempts
Cortex_M3_0: Failed to remove the debug state from the target before disconnecting. There may still be breakpoint op-codes embedded in program memory. It is recommended that you reset the emulator before you connect and reload your program before you continue debugging
Cortex_M3_0: Failed to write data to temporary buffer in RAM before programming device FLASH memory. addr=0x20000C00, writeLength=4096(0x1000), bufIdx=0 Error: Could not write 0x20000C00: target is not connected
Cortex_M3_0: File Loader: Memory write failed: Failed to write data to temporary buffer in RAM before programming device FLASH memory.
Cortex_M3_0: GEL: File: E:\workspace_v9\rtls_slave_cc2640r2lp_app\FlashROM_StackLibrary\rtls_slave_cc2640r2lp_app.out: Load failed.

应该怎么解决，有没有人可以帮忙解决一下

从错误信息看，是仿真器和mcu间通讯失败了。
楼主用的什么板子？仿真器和mcu间怎么连接的？