/**
* @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));
/*******************************************************************************
* @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));
