我的51初学故事+初学作品：有功能菜单的DS1302+1602表

魏卫利

你太有才了

风流侠客

1602做汉字显示的确不容易

生活的旋律

顶一个~呵呵~楼主毅力实在佩服~

Edward

更正一下，不是HEX文件是6.8kB，是需要6.8kB的ROM空间，HEX文件有20kB大小。

xiaomu

回复 19# 生活的旋律
旋律兄 最近进展如何

恶灵骑士

菜单实现的不错，但是这样容易让代码太长

dawn

我还在摸索。

BH3QLK

这位大哥方便吗？加弟弟QQ562633046

duxaaa

不错！第一次做就成功了。

millwood

我的51初学故事+初学作品：有功能菜单的DS1302+1602表

I would encourage you to make a few modules out of this, so your life is easier in the future.

for example, you are dealing with two (or three) distinct devices and you can make a module that drives the lcd and another that drives the ds1302.

in the future, you can simply include the lcd source file in a project, and include the lcd header file in your user code. compile and you can then write to that lcd.

the purpose of programming is really so that you don't have to do it again in the future. That way, you build on your prior investment.

millwood

just noticed this in your code:

                ACC>>=1;

you should never ever do anything like that in a high-level language (like C). Let the compiler handle that.

Edward

I would encourage you to make a few modules out of this, so your life is easier in the future.
...
millwood 发表于 2011-11-14 22:27

Thank you! I know you can read Chinese, and I speak poor English, so ...

现在我已经基本在这样做了，我用过的1602、1302都基本copy以前的代码，18B20正准备这样做。现在也没有时间形成更系统的什么东西，课程比较紧啊。

you should never ever do anything like that in a high-level l ...
millwood 发表于 2011-11-14 22:30

这段是不是这样理解，就是在高级语言中不要使用低级语句？我的想法是8051单片机性能有限，就尽量节约一下，少定义一些变量。

millwood

but you simply do not, nor could you, predict if the compiler is using ACC for other purposes, particularly true in an interrupted environment.

so using a special register like that is very dangerous and incredibly difficult to debug in a large system.