コード例 #1
0
/**
  * @brief  Transmit a file using the ymodem protocol
  * @param  buf: Address of the first byte
  * @retval The size of the file
  */
uint8_t Ymodem_Transmit (uint8_t *buf, const uint8_t* sendFileName, uint32_t sizeFile)
{

    uint8_t packet_data[PACKET_1K_SIZE + PACKET_OVERHEAD];
    uint8_t filename[FILE_NAME_LENGTH];
    uint8_t *buf_ptr, tempCheckSum;
    uint16_t tempCRC;
    uint16_t blkNumber;
    uint8_t receivedC[2], CRC16_F = 0, i;
    uint32_t errors, ackReceived, size = 0, pktSize;

    errors = 0;
    ackReceived = 0;
    for (i = 0; i < (FILE_NAME_LENGTH - 1); i++)
    {
        filename[i] = sendFileName[i];
    }
    CRC16_F = 1;

    /* Prepare first block */
    Ymodem_PrepareIntialPacket(&packet_data[0], filename, &sizeFile);

    do
    {
        /* Send Packet */
        Ymodem_SendPacket(packet_data, PACKET_SIZE + PACKET_HEADER);

        /* Send CRC or Check Sum based on CRC16_F */
        if (CRC16_F)
        {
            tempCRC = Cal_CRC16(&packet_data[3], PACKET_SIZE);
            Send_Byte(tempCRC >> 8);
            Send_Byte(tempCRC & 0xFF);
        }
        else
        {
            tempCheckSum = CalChecksum (&packet_data[3], PACKET_SIZE);
            Send_Byte(tempCheckSum);
        }

        /* Wait for Ack and 'C' */
        if (Receive_Byte(&receivedC[0], 10000) == 0)
        {
            if (receivedC[0] == ACK)
            {
                /* Packet transferred correctly */
                ackReceived = 1;
            }
        }
        else
        {
            errors++;
        }
    } while (!ackReceived && (errors < 0x0A));
コード例 #2
0
ファイル: ymodem.c プロジェクト: wugoukanle/smart_key
/*******************************************************************************
  * @函数名称	Ymodem_Transmit
  * @函数说明   通过ymodem协议传输一个文件
  * @输入参数   buf :数据地址指针
                sendFileName :文件名
                sizeFile:文件长度
  * @输出参数   无
  * @返回参数   是否成功
                0:成功
*******************************************************************************/
uint8_t Ymodem_Transmit (uint8_t *buf, const uint8_t* sendFileName, uint32_t sizeFile)
{

    uint8_t packet_data[PACKET_1K_SIZE + PACKET_OVERHEAD];
    uint8_t FileName[FILE_NAME_LENGTH];
    uint8_t *buf_ptr, tempCheckSum ;
    uint16_t tempCRC, blkNumber;
    uint8_t receivedC[2], CRC16_F = 0, i;
    uint32_t errors, ackReceived, size = 0, pktSize;

    errors = 0;
    ackReceived = 0;
    for (i = 0; i < (FILE_NAME_LENGTH - 1); i++)
    {
        FileName[i] = sendFileName[i];
    }
    CRC16_F = 1;

    //准备第一个数据包
    Ymodem_PrepareIntialPacket(&packet_data[0], FileName, &sizeFile);

    do
    {
        //发送数据包
        Ymodem_SendPacket(packet_data, PACKET_SIZE + PACKET_HEADER);
        //发送CRC校验
        if (CRC16_F)
        {
            tempCRC = Cal_CRC16(&packet_data[3], PACKET_SIZE);
            Send_Byte(tempCRC >> 8);
            Send_Byte(tempCRC & 0xFF);
        }
        else
        {
            tempCheckSum = CalChecksum (&packet_data[3], PACKET_SIZE);
            Send_Byte(tempCheckSum);
        }

        //等待响应
        if (Receive_Byte(&receivedC[0], 10000) == 0)
        {
            if (receivedC[0] == ACK)
            {
                //数据包正确传输
                ackReceived = 1;
            }
        }
        else
        {
            errors++;
        }
    } while (!ackReceived && (errors < 0x0A));