bootloader中这个函数是干什么的？void SerialUpload(void) { uint32_t status = 0; SerialPutString("\n\n\rSelect Receive File ... (press any key to abort)\n\r"); if (GetKey() == CRC16) { /* Transmit the flash image through ymodem protocol */ status = Ymodem_Transmit((uint8_t*)ApplicationAddress, (const uint8_t*)"UploadedFlashImage.bin", FLASH_IMAGE_SIZE); delay_1ms(10); if (status != 0) { SerialPutString("\n\rError Occured while Transmitting File\n\r"); } else { SerialPutString("\n\rFile Trasmitted Successfully \n\r"); } } else { SerialPutString("\r\n\nAborted by user.\n\r"); } bootloader中这个函数是干什么的？void SerialUpload(void) { uint32_t status = 0; SerialPutString("\n\n\rSelect Receive File ... (press any key to abort)\n\r"); if (GetKey() == CRC16) { /* Transmit the flash image through ymodem protocol */ status = Ymodem_Transmit((uint8_t*)ApplicationAddress, (const uint8_t*)"UploadedFlashImage.bin", FLASH_IMAGE_SIZE); delay_1ms(10); if (status != 0) { SerialPutString("\n\rError Occured while Transmitting File\n\r"); } else { SerialPutString("\n\rFile Trasmitted Successfully \n\r"); } } else { SerialPutString("\r\n\nAborted by user.\n\r"); }

这个函数是用于在引导加载程序（bootloader）中通过串口上传文件。它首先会向串口输出一条提示信息，要求用户选择接收文件并按下任意键来中断上传过程。然后，它会检查用户输入的按键是否等于预设的校验值（CRC16），如果是，则通过Ymodem协议传输文件，将文件的内容写入到指定的存储地址中。上传完成后，会输出相应的成功或失败提示信息。如果用户没有按下指定的按键，函数会输出中断提示信息。