PIC18F25xx怎么为SDI设置相应的TIS位

DOCS（至少2550和2520）说：SDI是由我所读取的SPI模块自动控制的，因为您不必为该位改变tiS，特别是当文本稍后谈到其余的摆动TIIS时，但这似乎并不成立。我必须为SDI设置相应的TIS位，以便它接收。还有其他人看到这个吗？



      以下为原文

    The docs, at least for 2550 and 2520, say:

• SDI is automatically controlled by the SPI module

I read that as you do not have to change TRIS for that bit, especially as the text later talks about wiggling TRIS for the rest, but that does not seem to hold true. I had to set the corresponding TRIS bit for SDI as well for it to receive.

Anyone else seen this?