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dm6437 spi 24 启动调试问题

根据文档说明,将GPIO97当做片选信号。目前可实现SPI flash 烧写,SPI24read例程运行也没有问题,就是在启动时候,没有读取仿佛SPIflash的内容,为什么呢。bootmode = 1111,启动方式选择SPI24,也是没有问题的,那问题在哪呢?