|
|
datasheet里这样写到：
Port 0: Port 0 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 0 pins depends upon the pin function selected via the pin connect
block. Pins 12, 13, 14, and 31 of this port are not available.
Port 1: Port 1 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 1 pins depends upon the pin function selected via the pin connect
block. Pins 2, 3, 5, 6, 7, 11, 12, and 13 of this port are not available
Port 2: Port 2 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 2 pins depends upon the pin function selected via the pin connect
block. Pins 14 through 31 of this port are not available
Port 3: Port 3 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 3 pins depends upon the pin function selected via the pin connect
block. Pins 0 through 24, and 27 through 31 of this port are not available
虽然IO端口是32bit的，但是没有一个端口是完整的，想同时输出32bit数据不可能。
甚至要一次性输出16bit数据都有点难搞。好像只有P1的高16位能实现。 |
阿莫论坛20周年了！感谢大家的支持与爱护！！
曾经有一段真挚的爱情摆在我的面前，我没有珍惜，现在想起来，还好我没有珍惜……
|
发表于 2010-8-21 13:55:54
楼主