Question

我有 ReadBinFile（）//从bin文件中读取2048字节 {

transferlength = fileGetBinaryBlock（buffer，2048，fileHandle）; }

现在我想阅读.hex和.mhx扩展文件我无法找到内置函数在capl脚本中执行此操作的选项。

Answer 1

 dword openFileRead(char filename[], dword mode);

此函数打开名为filename的文件以进行读取访问。

如果mode = 0，则以ASCII模式打开文件; 如果mode = 1，则以二进制模式打开文件。

To open hexfile
dword HexFileHandle;

HexFileHandle = openFileRead(HEX_File_Path, 0);

返回值是必须用于读取操作的文件句柄。

如果发生错误，则返回值为0.

Answer 2

*.hex 或 *.mhx 格式的文件可以在 OpenFileRead 函数的帮助下读取。下面的一段代码将有助于阅读 .hex 文件。

void readhexfile(void)
{
    dword i;
    char  LineBuffer[0xFF];
    int   ByteCount;
    char  CountAscii[5];
    int   Data;
    char  Ascii[5];
    dword readaccess = 0;
    dword bufferpointer = 0;
    byte buffer[1*1024*1024];  //1MB hex file size
    if ((-1) != strstr_regex(FILENAME, ".hex"))  //FILENAME-> Sysvariable
    {
        readaccess = OpenFileRead (FILENAME,0);
        /* --> identified as IntelHEX-Input */
        if (readaccess != 0)
        {
            /* read line until cr+lf */
            while (fileGetString(LineBuffer, elcount(LineBuffer), readaccess) != 0)
            {
                // check for Record Type 00 (Data Record)
                if (LineBuffer[0] == ':'
                        && LineBuffer[7] == '0'
                        && LineBuffer[8] == '0'
                        )
                {
                    // extract ByteCount parameter
                    strncpy(CountAscii, "0x", elcount(CountAscii));
                    substr_cpy_off(CountAscii, 2, LineBuffer, 1, 2, elcount(CountAscii));
                    ByteCount = atol(CountAscii);
                    // extract Data parameter
                    for (i = 0; i < ByteCount; i++)
                    {
                        strncpy(Ascii, "0x", elcount(Ascii));
                        substr_cpy_off(Ascii, 2, LineBuffer, 9+i*2, 2, elcount(Ascii));
                        Data = atol(Ascii);
                        buffer[bufferpointer++] = Data;
                    };
                }
            }
            fileClose(readaccess);
        }
    }
}

类似方法可用于读取 .mhx 文件格式。

如何在CAPL脚本中读取hex和mhx扩展名

2 个答案: