51单片机

维修方法求助，点阵屏，通讯协议高手进来帮我看看吧。

2020-01-27 11:40发布

站内问答 / 51单片机
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放假了，难免被人东拉西跑的去帮忙“看看设备”

现在接触到一个朋友单位的 汽车自动检测线上用的LED显示屏，其控制卡是用AT89C52+CPLD+245+373等一大堆器件做成的，不知为何，其中一颗独石电容击穿短路，将电路板引燃烧毁。

由于买不到备用件，于是维修就变成一件困难的事情。
现在维修有以下几种方法：
1、拆下一块正常的板抄板，把元器件搬过去。但是太麻烦了，整块板上面元器件非常多。
2、自己用单片机写一块控制卡，这样就需要破解通讯协议。
3、使用抓屏方式将信息投到LED卡，但朋友说这样不行的。

现在，请各位网友帮帮忙，如果你能从以下数据中找出规律，那我就可以自己写一块控制卡。
或者谁能帮忙买到 南昌科源 的灯屏的控制卡，这是最好的办法。
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22条回答
wye11083
1楼-- · 2020-01-27 15:25
 精彩回答 2  元偷偷看……
oufuqiang
2楼-- · 2020-01-27 18:57
wye11083 发表于 2013-7-11 17:51
抄板，你单片机也得有程序，何况CPLD里面也有程序，所以，要么买块新板子，要么抓屏发送。破解通信协议，除 ...

板子上的主要芯片都没被烧坏。
oufuqiang
3楼-- · 2020-01-27 19:50
忘了贴数据包了：
南昌科源 灯屏
显示内容：
转角检测工位 第一行 128×16点
等  待 ……     第二行 128×16点
数据包：
08 55 AA 55 AA 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0C 00 03 00 00 00 60 00 80 01 60 00 00 00 00 00 0C 00 FB 9F F9 0F C0 30 80 03 60 00 00 00 00 E0 FF E7 6F 03 07 00 FF 7F C0 00 FC FF 00 00 00 00 06 80 61 03 03 00 70 07 60 18 60 CF 00 00 00 00 36 80 F9 1F 00 00 CC 19 30 30 60 CF 00 00 00 00 33 C0 7B 1B FC 3F 6C 1B 98 7F 30 CF 00 00 00 80 31 C0 7B DB 67 03 3C 1E FC 31 F0 FF 00 00 00 C0 FF E7 7F 1B 66 03 FC 1F 00 00 9C 01 00 00 00 00 30 00 7B 1B 66 03 C0 00 F8 1F 00 03 00 00 00 00 30 00 FB 1B 66 33 FE 3F 18 18 FC FF 00 00 00 F0 FF 0F BF 1F 36 33 36 33 18 18 80 07 00 00 00 00 30 E0 FB 1C 1E 3E 1E 36 18 18 C0 0F 00 00 00 00 30 00 1B 18 06 00 FE 3F 18 18 60 3B 00 00 00 00 30 00 1B 18 0F 00 06 3C F8 1F 38 E3 01 00 00 00 30 00 1B 9E F9 3F 06 3C 18 18 0E C3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 FF 01 08 55 AA 55 AA 01 00 80 C1 00 0C 00 B0 01 18 00 30 00 60 03 00 00 00 80 C1 00 FC 87 71 03 F8 0F F0 7F E0 0E 00 00 00 C0 C0 00 0C 03 33 1B 18 06 18 00 30 0C 00 00 00 F0 FF 07 86 01 F7 3F 3C 06 FC 3F F0 FF 00 00 00 C0 60 00 FF 0F 3B 03 66 03 36 30 18 00 00 00 00 E0 61 80 63 0C 3C 0F C3 01 F0 3F F8 30 00 00 00 B0 F9 CF 63 0C F6 1F 60 03 30 30 BC 71 00 00 00 F0 6F 00 FF 0F 36 03 38 0E F0 3F BC 31 00 00 00 80 31 00 63 0C 36 0F 0E 7C 60 00 36 33 00 00 00 80 F9 07 63 CC F3 9F FF 3F E0 3F 30 1B 00 00 00 C0 07 03 FF 0F 33 03 CC 0C 70 18 30 1B 00 00 00 F0 31 03 63 0C 33 03 FC 0F D8 0E 30 18 00 00 00 80 E1 01 63 0C 33 1B CC 0C 8C 03 30 0C 00 00 00 80 C1 80 61 0C F3 3F CC 0C E0 0E F0 FF 01 00 00 80 81 81 61 0F 33 00 FC 0F 38 F8 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0C 00 03 00 00 00 60 00 80 01 60 00 00 00 00 00 0C 00 FB 9F F9 0F C0 30 80 03 60 00 00 00 00 E0 FF E7 6F 03 07 00 FF 7F C0 00 FC FF 00 00 00 00 06 80 61 03 03 00 70 07 60 18 60 CF 00 00 00 00 36 80 F9 1F 00 00 CC 19 30 30 60 CF 00 00 00 00 33 C0 7B 1B FC 3F 6C 1B 98 7F 30 CF 00 00 00 80 31 C0 7B DB 67 03 3C 1E FC 31 F0 FF 00 00 00 C0 FF E7 7F 1B 66 03 FC 1F 00 00 9C 01 00 00 00 00 30 00 7B 1B 66 03 C0 00 F8 1F 00 03 00 00 00 00 30 00 FB 1B 66 33 FE 3F 18 18 FC FF 00 00 00 F0 FF 0F BF 1F 36 33 36 33 18 18 80 07 00 00 00 00 30 E0 FB 1C 1E 3E 1E 36 18 18 C0 0F 00 00 00 00 30 00 1B 18 06 00 FE 3F 18 18 60 3B 00 00 00 00 30 00 1B 18 0F 00 06 3C F8 1F 38 E3 01 00 00 00 30 00 1B 9E F9 3F 06 3C 18 18 0E C3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 FF 01 08 55 AA 55 AA 01 00 80 C1 00 0C 00 00 00 60 00 30 00 60 03 00 00 00 80 C1 00 FC 87 FF 3F 60 00 F0 7F E0 0E 00 00 00 C0 C0 00 0C 03 C0 00 FF 7F 18 00 30 0C 00 00 00 F0 FF 07 86 01 C0 00 30 00 FC 3F F0 FF 00 00 00 C0 60 00 FF 0F C0 00 30 00 36 30 18 00 00 00 00 E0 61 80 63 0C C0 00 18 03 F0 3F F8 30 00 00 00 B0 F9 CF 63 0C C6 00 1C 03 30 30 BC 71 00 00 00 F0 6F 00 FF 0F C6 1F FC 3F F0 3F BC 31 00 00 00 80 31 00 63 0C C6 00 0E 03 60 00 36 33 00 00 00 80 F9 07 63 0C C6 00 0F 03 E0 3F 30 1B 00 00 00 C0 07 03 FF 0F C6 80 0D 03 70 18 30 1B 00 00 00 F0 31 03 63 0C C6 00 0C 03 D8 0E 30 18 00 00 00 80 E1 01 63 0C C6 00 0C 03 8C 03 30 0C 00 00 00 80 C1 80 61 CC FF 3F FC 7F E0 0E F0 FF 01 00 00 80 81 81 61 0F 00 00 0C 00 38 F8 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0C 00 03 00 00 00 60 00 80 01 60 00 00 00 00 00 0C 00 FB 9F F9 0F C0 30 80 03 60 00 00 00 00 E0 FF E7 6F 03 07 00 FF 7F C0 00 FC FF 00 00 00 00 06 80 61 03 03 00 70 07 60 18 60 CF 00 00 00 00 36 80 F9 1F 00 00 CC 19 30 30 60 CF 00 00 00 00 33 C0 7B 1B FC 3F 6C 1B 98 7F 30 CF 00 00 00 80 31 C0 7B DB 67 03 3C 1E FC 31 F0 FF 00 00 00 C0 FF E7 7F 1B 66 03 FC 1F 00 00 9C 01 00 00 00 00 30 00 7B 1B 66 03 C0 00 F8 1F 00 03 00 00 00 00 30 00 FB 1B 66 33 FE 3F 18 18 FC FF 00 00 00 F0 FF 0F BF 1F 36 33 36 33 18 18 80 07 00 00 00 00 30 E0 FB 1C 1E 3E 1E 36 18 18 C0 0F 00 00 00 00 30 00 1B 18 06 00 FE 3F 18 18 60 3B 00 00 00 00 30 00 1B 18 0F 00 06 3C F8 1F 38 E3 01 00 00 00 30 00 1B 9E F9 3F 06 3C 18 18 0E C3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 FF 01
wye11083
4楼-- · 2020-01-27 22:03
oufuqiang 发表于 2013-7-11 17:52
板子上的主要芯片都没被烧坏。

主芯片都没坏？你怎么知道？都着火了，芯片基本350度就全坏掉了。你先把51和CPLD接好，供电接好，看看有没有反应。如果主芯片照你说的是好的，那肯定能正常工作。
oufuqiang
5楼-- · 2020-01-28 02:23
着火的只是很小一个区域。等拍好照片了发上来。
sange
6楼-- · 2020-01-28 06:51
 精彩回答 2  元偷偷看……
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