这里是不是ADUC7026的BUG?

使用查询方式测试SPI:<br /><br />1、&nbsp;GP1CLR&nbsp;=&nbsp;0X00800000;//从机片选<br />2、&nbsp;SPITX&nbsp;=&nbsp;results;//&nbsp;transmit&nbsp;command&nbsp;or&nbsp;any&nbsp;dummy&nbsp;data<br />3、&nbsp;while&nbsp;((SPISTA&nbsp;&&nbsp;0x02)&nbsp;!=&nbsp;0x02)&nbsp;;&nbsp;<br />4、&nbsp;GP1SET&nbsp;=&nbsp;0X00800000;//<br /><br />断点分别设在1和3<br />查看SPISTA&nbsp;状态寄存器：依次为0x1a和&nbsp;0x3e<br />也就是说SPITX一直为空？<br /><br />当用以下方法时，发现从机可以收到数据了<br />&nbsp;&nbsp;&nbsp;GP1CLR&nbsp;=&nbsp;0X00800000;<br />&nbsp;&nbsp;&nbsp;SPITX&nbsp;=&nbsp;results;//&nbsp;transmit&nbsp;command&nbsp;or&nbsp;any&nbsp;dummy&nbsp;data<br />&nbsp;&nbsp;&nbsp;while&nbsp;((SPISTA&nbsp;&&nbsp;0x02)&nbsp;!=&nbsp;0x02)&nbsp;;&nbsp;<br />&nbsp;&nbsp;&nbsp;delay(2000);<br />&nbsp;&nbsp;&nbsp;GP1SET&nbsp;=&nbsp;0X00800000;<br /><br />不知道有没有用过aduc7026的朋友？<br />

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