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C6416T外挂flash的WE管脚一直是高电平?



采用C6416T的EMIFB口外挂一个flash,用合众达的测试程序测试flash,

在用flash_write 函数写flash时,WE信号一直是高电平,但是CE和OE一直都是脉冲信号,数据写不进flash;

在用flash_read函数读flash时,WE信号一直是高电平,但是CE和OE一直都是脉冲信号,能有效的读出flash中的数据;

为什么C6416T发出的WE信号一直都是高电平?大哥大姐们帮忙分析分析;

PS:EMIFB配置成8位异步接口,CE1CTL:0xffffff0f;  CE1SEC:0x00000002