..\HARDWARE\EXTI\exti.c(77): warning: #223-D: function "PAout" declared implicitly

一蓑烟雨任平生

老师们看一下，我被这个问题困扰了很长时间了，建立的工程一直这样，即使我在所有错误的开头加了#include "sys.h", 头文件路径也加了，这个问题还是不能解决。
我建的工程都是复制mini32开发板的库函数例程，MDK3.8的版本。
望老师们指点迷津。谢谢！

compiling exti.c...
..\HARDWARE\EXTI\exti.c(77): warning:  #223-D: function "PAout" declared implicitly
..\HARDWARE\EXTI\exti.c(77): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\EXTI\exti.c(78): warning:  #223-D: function "PDout" declared implicitly
..\HARDWARE\EXTI\exti.c(78): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\EXTI\exti.c(89): warning:  #223-D: function "PAout" declared implicitly
..\HARDWARE\EXTI\exti.c(89): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\EXTI\exti.c(94): warning:  #223-D: function "PDout" declared implicitly
..\HARDWARE\EXTI\exti.c(94): error:  #137: expression must be a modifiable lvalue
compiling myiic.c...
..\HARDWARE\IIC\myiic.c(31): warning:  #223-D: function "PCout" declared implicitly
..\HARDWARE\IIC\myiic.c(31): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(32): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(39): warning:  #223-D: function "PCout" declared implicitly
..\HARDWARE\IIC\myiic.c(39): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(40): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(42): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(44): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(50): warning:  #223-D: function "PCout" declared implicitly
..\HARDWARE\IIC\myiic.c(50): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(51): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(53): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(54): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(64): warning:  #223-D: function "PCout" declared implicitly
..\HARDWARE\IIC\myiic.c(64): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(65): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(66): warning:  #223-D: function "PCin" declared implicitly
..\HARDWARE\IIC\myiic.c(75): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(81): warning:  #223-D: function "PCout" declared implicitly
..\HARDWARE\IIC\myiic.c(81): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(83): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(85): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(87): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(92): warning:  #223-D: function "PCout" declared implicitly
..\HARDWARE\IIC\myiic.c(92): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(94): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(96): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(98): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(108): warning:  #223-D: function "PCout" declared implicitly
..\HARDWARE\IIC\myiic.c(108): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(111): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(114): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(116): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(127): warning:  #223-D: function "PCout" declared implicitly
..\HARDWARE\IIC\myiic.c(127): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(129): error:  #137: expression must be a modifiable lvalue
..\HARDWARE\IIC\myiic.c(131): warning:  #223-D: function "PCin" declared implicitly

兜兜里缺钱

有GPIO的库函数么