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TMS320F28379D: 程序烧写到主芯片的flash中,断电上电后,程序不能自己运行问题。

Part Number: TMS320F28379D

根据手册,boot引脚GPIO72和GPIO84为高电平,程序烧写到主芯片的flash中,断电上电后,程序才能自己运行。

但是我硬件没有引出GPIO84引脚,不能将其配置为高电平了,引出了GPIO72,GPIO73,GPIO74引脚,请问怎样更改配置才能通过其它引脚代替GPIO84引脚功能,实现断电上电后,程序自己运行。