工程已编译通过，但是在烧录的时候报以下错误：
IcePick_C_0: Error connecting to the target: (Error -2131 @ 0x0) Unable to access device register. 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 20.0.0.3344)
怀疑芯片需要解锁，但是没找到CCS20上进行芯片解锁的方法
