stm32f407的板子，程序直接烧写到rom中可用，
由redboot引导到ram运行就出错，
$T020f:00000000;0d:00000000;#ca$T020f:00000000;0d:00000000;#ca
操作前
RedBoot> dump -b 0x64008019 -1
64008019: 16 00 16 00 16 00 16 00 16 00 16 00 16 00 16 00 |................|
64008029: 16 00 16 00 16 00 16 00 16 00 16 00 16 00 16 00 |................|
操作后也是一样
RedBoot> dump -b 0x64008019 -1
64008019: 16 00 16 00 16 00 16 00 16 00 16 00 16 00 16 00 |................|
64008029: 16 00 16 00 16 00 16 00 16 00 16 00 16 00 16 00 |................|
是不是程序没写到ram里面去？ |
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