port.h

来自「时间触发嵌入式系统设计模式:使用8051系列微控制器开发可靠应用」· C头文件 代码 · 共 51 行

/*------------------------------------------------------------------*-

   Port.H (v1.00)

  ------------------------------------------------------------------

  'Port Header' (see Chap 10) for the project MULTI_S (see Chap 19)


   COPYRIGHT
   ---------

   This code is from the book:

   PATTERNS FOR TIME-TRIGGERED EMBEDDED SYSTEMS by Michael J. Pont 
   [Pearson Education, 2001; ISBN: 0-201-33138-1].

   This code is copyright (c) 2001 by Michael J. Pont.
 
   See book for copyright details and other information.

-*------------------------------------------------------------------*/

// ------ Bargraph.C -----------------------------------------------

// Connect LED from +5V (etc) to these pins, via appropriate resistor
// [see Chapter 7 for details]
// The 8 port pins may be distributed over several ports if required
sbit Pin0 = P2^0;
sbit Pin1 = P2^1;
sbit Pin2 = P2^2;
sbit Pin3 = P2^3;
sbit Pin4 = P2^4;
sbit Pin5 = P2^5;
sbit Pin6 = P2^6;
sbit Pin7 = P2^7;

// ------ Swit_D.C -------------------------------------------------

// Connect single push-button switch on this pin (to gnd)
// - debounced in software
sbit  Sw_pin = P3^3;   // Press this to start adjusting the time


/*------------------------------------------------------------------*-
  ---- END OF FILE -------------------------------------------------
-*------------------------------------------------------------------*/