[参考译文] TMS320F28386S：SCIA 引导加载程序

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https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1186210/tms320f28386s-scia-boot-loader

器件型号：TMS320F28386S

我们选择的 GPIO 引脚错误、Rx=9、TX=84、这不是允许的对之一。因此、我将尝试仿真该代码的功能。串行闪存编程器尝试下载闪存内核并且 SCI_Boot()接收到它。在检查关键字并删除16个保留字节 CopyData()后，将调用它以接收文件。文件以11个块的形式发送、但我不理解为什么所有块都具有相同的目标、因为块之间没有明显的处理。

BlockSize:2  destination:29184
BlockSize:24  destination:29184
BlockSize:1188  destination:29184
BlockSize:2  destination:29184
BlockSize:24  destination:29184
BlockSize:1188  destination:29184
BlockSize:307  destination:29184
BlockSize:4  destination:29184
BlockSize:4096  destination:29184
BlockSize:4096  destination:29184
BlockSize:1943  destination:29184

这是 bootloader_shared_funcs.c 中的代码

void CopyData(void)
{
    struct HEADER {
        uint32_t DestAddr;        
        uint16_t BlockSize;
    } BlockHeader;

    uint16_t wordData;
    uint16_t i;

    //
    // Get the size in words of the first block
    //
    BlockHeader.BlockSize = (*GetWordData)();

    //
    // While the block size is > 0 copy the data
    // to the DestAddr.  There is no error checking
    // as it is assumed the DestAddr is a valid
    // memory location
    //
    while(BlockHeader.BlockSize != (uint16_t)0x0000U)
    {
        BlockHeader.DestAddr = GetLongData();
        
        // Added for debugging
        printf("\r\nBlockSize:%d  destination:%d", BlockHeader.BlockSize, BlockHeader.DestAddr);
        
        for(i = 1; i <= BlockHeader.BlockSize; i++)
        {
            wordData = (*GetWordData)();
            *(uint16_t *)BlockHeader.DestAddr = wordData;
            BlockHeader.DestAddr+=1U;
        }

        //
        // Get the size of the next block
        //
        BlockHeader.BlockSize = (*GetWordData)();
    }

    return;
}

2 年多前