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5509A固化24flash不成功——续

软件:CCS6

芯片:5509A

flash:AT45DB161D-MU——SPI_24bit地址

现象:可以读出flash的ID,那么也说明可以向flash下载程序,即flash和dsp通信正常。

问题1:断电上电,不能从flash启动。bootmode正确。

问题2:如果BootLoader mode设置正确的话(设置从24bit flash启动),上电检测dsp的GPIO4,GPIO4脚电压是不是应该为高?