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TMS320F28377D: 使用serial_flash_programmer.exe的问题

Part Number: TMS320F28377D
Other Parts Discussed in Thread: CONTROLSUITE

28377的引脚上电前配置成SCI boot,GPIO72=0、GPIO84=1,用到的文件serial_flash_programmer.exe、F2837xD_sci_flash_kernels_cpu01.txt、F2837xD_sci_flash_kernels_cpu02.txt、Longgang_TCUcontrolCPU1_230227.txt、Longgang_TCUcontrolCPU2_230227.txt放在同一路径,用的USB转串口线连接,上电进入CMD运行“serial_flash_programmer.exe  -d f2837xD -k F2837xD_sci_flash_kernels_cpu01.txt -a Longgang_TCUcontrolCPU1_230227.txt -m F2837xD_sci_flash_kernels_cpu02.txt -n Longgang_TCUcontrolCPU2_230227.txt -b 9600 -v -p COM2”后停留在“Attempting autobaud to load kernel...”,使用串口端口配置无误,请问是什么原因了?用的z-tek力特工业级USB转串口线RS485/422转换器

还有,是否有关于用CMD运行serial_flash_programmer下载DSP程序过程中出现的异常情况汇总说明啊?

DSP确认进入了SCI boot 模式,接收引脚GPIO85用示波器测到了第一个字节波形(查看资料第一字节信息是0xAA?)