我正在寻找对 EEPROM 内容的 CRC 计算。我尝试使用 BOSCH ECU 为我的汽车添加选项。该 ECU 中的 MCU 是 Tricore TC1793，并且 EEPROM 内容似乎被分成每个 128 字节的块。

当我尝试从一个块更改一个字节时，ECU 停止工作，所以我从另一辆车上获取另一个 ECU 并抓取一些块进行比较：

1. 来自我的 ECU 的块：

   26 13 01 00 89 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 BD 8E
   

2. 来自另一个 ECU 的相同 ID (26 13) 块：

   26 13 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 C1 69
   

3. 除了前 2 个字节外，来自我的 ECU 的另一个块具有相同的数据（作为数字 1）：

   6A DF 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 A8 E5
   

4. 来自我的 ECU 的另一个块：

   A9 68 01 00 1B 09 CB 0D FF 7F 00 80 FF 7F 00 80  
   FF 7F 00 80 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 71 DD
   

5. 0xA968 来自另一个 ECU：

   A9 68 01 00 FF 7F 00 80 FF 7F 00 80 FF 7F 00 80  
   FF 7F 00 80 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 78 74
   

我认为前 2 个字节是一个 ID，我认为最后两个字节是一个校验和，我确信 CRC 是根据前两个字节的原因计算的，另一个块具有相同的数据，但前两个字节不同的 CRC 不同。

我试图通过复仇找到一些线索，但没有找到任何东西......

如果有人能帮我找到这个校验和是如何计算的，或者给我一些调查线索。

这是我的 ECU（eeprom + mcu flash TC1793）的完整数据。