查看Wiring shift.c的源代码
←
Wiring shift.c
跳转至:
导航
、
搜索
因为以下原因,你没有权限编辑本页:
您刚才请求的操作只有这个用户组中的用户才能使用:
用户
您可以查看并复制此页面的源代码:
<pre style="color:blue"> /* wiring_shift.c - shiftOut() function Part of Arduino - http://www.arduino.cc/ Copyright (c) 2005-2006 David A. Mellis This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA $Id: wiring.c 248 2007-02-03 15:36:30Z mellis $ */ #include "wiring_private.h" uint8_t shiftIn(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder) { uint8_t value = 0; uint8_t i; for (i = 0; i < 8; ++i) { digitalWrite(clockPin, HIGH); if (bitOrder == LSBFIRST) value |= digitalRead(dataPin) << i; else value |= digitalRead(dataPin) << (7 - i); digitalWrite(clockPin, LOW); } return value; } void shiftOut(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder, uint8_t val) { uint8_t i; for (i = 0; i < 8; i++) { if (bitOrder == LSBFIRST) digitalWrite(dataPin, !!(val & (1 << i))); else digitalWrite(dataPin, !!(val & (1 << (7 - i)))); digitalWrite(clockPin, HIGH); digitalWrite(clockPin, LOW); } } </pre>
返回
Wiring shift.c
。
导航菜单
个人工具
登录
名字空间
页面
讨论
变换
查看
阅读
查看源代码
查看历史
操作
搜索
导航
首页
社区专页
新闻动态
最近更改
随机页面
帮助
工具箱
链入页面
相关更改
特殊页面
页面信息