eeprom_write()/read()不起作用

嗨，说得更具体一些。它以前起作用了吗？在哪个编译器+版本？你使用哪个设备？当做



      以下为原文

    Hi,
Be a bit more specific.
Did it work previously ?  on  which compiler + version ?
Which device do you use ?
Regards
 

PIC 18？因为它们都是一样的？没有编译器或版本？你可以尝试安装遗留的PLIB，这可能会有帮助。数据表有答案。



      以下为原文

    a pic 18? Since they are all the same?
and No Compiler or Version?
You can Try to install the Legacy PLib, that possibly could help.
The data sheet has the answer.
 
 

嗨，也许是一个非常古老的C18 PLIB……



      以下为原文

    Hi,
Maybe a very old C18 PLIB....
Regards
 

嗨，据我所知，为了保持与较老的XC8编译器的兼容性，PLIB可以加入，因为它们不是编译器的一部分：HTTP://www. McCHIP.COM/MPLAB/COMPILRES:这当然假设您使用了来自编译器的库（不是MCC生成的），Downloadsyou可以找到最后，PIC18PLIB。如果您使用来自MCC的一些库，那么您需要再次将它们添加到您的项目中，因为MCC V3.x不导入MCC V2.x项目。还需要添加MCC库。你可以在这里下载它们：HTTP://www. McCHIP.COM/MCCRGARDS



      以下为原文

    Hi,
 
As far as I remember, to keep compatibility with older XC8 compilers, PLIB can be added as they are not part anbymore of the compiler : http://www.microchip.com/mplab/compilers
this assume of course you use a library from the compiler (not generated by MCC)
Under the tab > Downloads you can find at the end the PIC18 PLIB.
 
In case you used some libraries coming from MCC, then you need to add them to your project again as MCC v3.x does not import MCC v2.x projects . MCC libraries need also to be added. you can download them here : http://www.microchip.com/MCC
 
Regards

谢谢你，NKurzman，我会试试的。非常感谢你的帮助。



      以下为原文

    Thank you NKurzman,
I will try that. 
 
I really appreciate your help.

如果你检查遗留的PLIB，你会发现代码微芯片用于访问EEPROM。您可以轻松地将其端口或从数据表（当它被提供时）。但是，初始化事物不那么明显。其次是从PLIB：只要PSECT不改变名称，它是好的。关于例程，它们是很容易实现的，当然，如果你做的话，它们会更健壮。请注意PLIB是BGGY。我在I2C库、LCD库等中发现了几个错误。



      以下为原文

    If you check the legacy PLIB you will find the code microchip uses for accessing the eeprom. You can port it easily or take it from the datasheet (when it's supplied). But for initializing things less evident.
 
 Next is from PLIB:
 
 /* Initialise 8 bytes of data at the specified address in EEPROM
 * Address must be valid for the device and for the PSECT
 */
#define __EEPROM_DATA_AT(address, a, b, c, d, e, f, g, h)
      asm("tpsect eeprom_data,class=EEDATA,noexec");
      asm("torg " ___mkstr(address) "");
      asm("tdbt" ___mkstr(a) "," ___mkstr(b) "," ___mkstr(c) "," ___mkstr(d) ","
                   ___mkstr(e) "," ___mkstr(f) "," ___mkstr(g) "," ___mkstr(h))
 
As far as the psect doesn't change the name, it's fine.
 
About the routines they are quite simple to implement, and surely if you do, they will be more robust.
Be aware PLIB is buggy. I found a couple of bugs in the I2C library, in the LCD library, etc...

这里是一个宏，它接受任意数量的数据字节，而不仅仅是八个字节和八个字节的数据。



      以下为原文

   
Here is a macro that accepts any number of data bytes, and not just eight and only eight bytes of data.