/**
* @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));
//--------------------------------------------------------------------------
static uint8_t Ymodem_Transmit (const char* sendFileName, uint32_t sizeFile)
{
uint8_t packet_data[PACKET_1K_SIZE + PACKET_OVERHEAD];
uint8_t filename[SPIFFS_OBJ_NAME_LEN];
uint16_t blkNumber;
uint8_t receivedC[1], i, err;
uint32_t size = 0;
for (i = 0; i < (SPIFFS_OBJ_NAME_LEN - 1); i++)
{
filename[i] = sendFileName[i];
}
while (MicoUartRecv( MICO_UART_1, &receivedC[0], 1, 10 ) == kNoErr) {};
// Wait for response from receiver
err = 0;
do {
luaWdgReload();
Send_Byte(CRC16);
} while (Receive_Byte(&receivedC[0], NAK_TIMEOUT) < 0 && err++ < 45);
if (err >= 45 || receivedC[0] != CRC16) {
send_CA();
return 99;
}
// === Prepare first block and send it =======================================
/* When the receiving program receives this block and successfully
* opened the output file, it shall acknowledge this block with an ACK
* character and then proceed with a normal YMODEM file transfer
* beginning with a "C" or NAK tranmsitted by the receiver.
*/
Ymodem_PrepareIntialPacket(&packet_data[0], filename, &sizeFile);
do
{
// Send Packet
Ymodem_SendPacket(packet_data, PACKET_SIZE + PACKET_OVERHEAD);
// Wait for Ack
err = Ymodem_WaitACK(ACK, 10);
if (err == 0 || err == 4) {
send_CA();
return 90; // timeout or wrong response
}
else if (err == 2) return 98; // abort
}while (err != 1);
// After initial block the receiver sends 'C' after ACK
if (Ymodem_WaitACK(CRC16, 10) != 1) {
send_CA();
return 90;
}
// === Send file blocks ======================================================
size = sizeFile;
blkNumber = 0x01;
// Resend packet if NAK for a count of 10 else end of communication
while (size)
{
// Prepare and send next packet
Ymodem_PreparePacket(&packet_data[0], blkNumber, size);
do
{
Ymodem_SendPacket(packet_data, PACKET_1K_SIZE + PACKET_OVERHEAD);
// Wait for Ack
err = Ymodem_WaitACK(ACK, 10);
if (err == 1) {
blkNumber++;
if (size > PACKET_1K_SIZE) size -= PACKET_1K_SIZE; // Next packet
else size = 0; // Last packet sent
}
else if (err == 0 || err == 4) {
send_CA();
return 90; // timeout or wrong response
}
else if (err == 2) return 98; // abort
}while(err != 1);
}
// === Send EOT ==============================================================
Send_Byte(EOT); // Send (EOT)
// Wait for Ack
do
{
// Wait for Ack
err = Ymodem_WaitACK(ACK, 10);
if (err == 3) { // NAK
Send_Byte(EOT); // Send (EOT)
}
else if (err == 0 || err == 4) {
send_CA();
return 90; // timeout or wrong response
}
else if (err == 2) return 98; // abort
}while (err != 1);
// === Receiver requests next file, prepare and send last packet =============
if (Ymodem_WaitACK(CRC16, 10) != 1) {
send_CA();
return 90;
}
Ymodem_PrepareLastPacket(&packet_data[0]);
do
{
Ymodem_SendPacket(packet_data, PACKET_SIZE + PACKET_OVERHEAD); // Send Packet
// Wait for Ack
err = Ymodem_WaitACK(ACK, 10);
if (err == 0 || err == 4) {
send_CA();
return 90; // timeout or wrong response
}
else if (err == 2) return 98; // abort
}while (err != 1);
return 0; // file transmitted successfully
}
