Ymodem命令

QT实现YmodemFileTransmit.hYmodemFileTransmit.cppBootLoader.hBootLoader.cppYmodem协议源码

Ymodem协议

帧头包号包号反码数据校验高位校验低位Soh/Stx0x000xFFDATACRC_HCRC_L

以Soh(0x01)开始的数据包信息块是128字节该帧类型总长度为133字节。

以Stx(0x02)开始的数据包信息块是1024字节该帧类型总长度为1029字节。

包号是为数据块的编号将要传送的数据进行分块编号只有一个字节范围为0~255。

大于255的则归零重复计算。

uint16_t

发送方收到接收方发送的CodeC(0x43)命令后才可以开始发送起始帧。

起始帧

帧头包号包号反码文件名称文件大小填充区校验高位校验低位CodeSoh0x000xFFFileName0x00FileSize0x00NULL(0x00)CRC_HCRC_L

文件名称后必须添加0x00作为结束文件大小值后必须加0x00作为结束余下的位置以0x00填充。

数据帧

帧头包号包号反码有效数据校验高位校验低位CodeSoh/CodeStx0x000xFFDATACRC_HCRC_L

对于SOH帧若余下数据小于128字节则以0x1A填充该帧长度仍为133字节

对于STX帧需考虑几种情况

余下数据等于1024字节以1029长度帧发送余下数据小于1024字节但大于128字节以1029字节帧长度发送无效数据以0x1A填充余下数据等于128字节以133字节帧长度发送余下数据小于128字节以133字节帧长度发送无效数据以0x1A填充

结束帧

帧头包号包号反码数据区校验高位校验低位CodeSoh0x000xFFDATACRC_HCRC_L数据区校验都以0x00填充。

代码块

StageNone:{transmitStageNone();break;}case

StageEstablishing:{transmitStageEstablishing();break;}case

StageEstablished:{transmitStageEstablished();break;}case

StageTransmitting:{transmitStageTransmitting();break;}case

StageFinishing:{transmitStageFinishing();break;}default:{transmitStageFinished();}}

Ymodem命令

命令命令码备注CodeNone0x00CodeSoh0x01133字节长度CodeStx0x021024字节长度CodeEot0x04文件传输结束指令CodeAck0x06接收正确指令CodeNak0x15重传当前数据包请求指令CodeCan0x18取消传输指令连续发送5个该命令终止传输CodeC0x43字符CCodeA10x41CodeA20x61

QT实现

nullptr);~YmodemFileTransmit();void

setFileName(const

getTransmitStatus();signals:void

transmitProgress(int

transmitStatus(YmodemFileTransmit::Status

status);public

(1000)YmodemFileTransmit::YmodemFileTransmit(QObject*

parent)

{setTimeDivide(499);setTimeMax(5);setErrorMax(999);connect(readTimer,

SIGNAL(timeout()),

SLOT(readTimeOut()));connect(writeTimer,

SIGNAL(timeout()),

}YmodemFileTransmit::~YmodemFileTransmit()

{delete

YmodemFileTransmit::setFileName(const

QString

YmodemFileTransmit::setIpAddress(const

QString

YmodemFileTransmit::setPortNumber(quint16

port)

YmodemFileTransmit::startTransmit()

{progress

array;array.append(0x02);array.append(0x01);array.append(0xFF);array.append(0x07);array.append(0x01);array.append(0x09);array.append(0x03);QHostAddress

ret

{QThread::msleep(50);readTimer-start(READ_TIME_OUT);return

true;}

YmodemFileTransmit::stopTransmit()

StatusAbort;writeTimer-start(WRITE_TIME_OUT);

}int

YmodemFileTransmit::getTransmitProgress()

{return

YmodemFileTransmit::getTransmitStatus()

{return

YmodemFileTransmit::readTimeOut()

{readTimer-stop();transmit();if((status

StatusEstablish)

{readTimer-start(READ_TIME_OUT);}

}void

YmodemFileTransmit::writeTimeOut()

{writeTimer-stop();transmitStatus(status);

}Ymodem::Code

YmodemFileTransmit::callback(Status

status,

StatusEstablish:if(file-open(QFile::ReadOnly)

true)

fileInfo.fileName().toLocal8Bit().data());strcpy((char*)buff

fileInfo.fileName().toLocal8Bit().size()

QByteArray::number(fileInfo.size()).data());*len

YMODEM_PACKET_SIZE;YmodemFileTransmit::status

StatusEstablish;transmitStatus(StatusEstablish);return

CodeAck;}

StatusError;writeTimer-start(WRITE_TIME_OUT);return

CodeCan;}case

fileSize);YmodemFileTransmit::status

StatusTransmit;transmitProgress(progress);transmitStatus(StatusTransmit);return

CodeAck;}

StatusTransmit;transmitStatus(StatusTransmit);return

CodeEot;}case

StatusFinish:file-close();YmodemFileTransmit::status

StatusFinish;writeTimer-start(WRITE_TIME_OUT);return

CodeAck;case

StatusAbort:file-close();YmodemFileTransmit::status

StatusAbort;writeTimer-start(WRITE_TIME_OUT);return

CodeCan;case

StatusTimeout:YmodemFileTransmit::status

StatusTimeout;writeTimer-start(WRITE_TIME_OUT);return

CodeCan;default:file-close();YmodemFileTransmit::status

StatusError;writeTimer-start(WRITE_TIME_OUT);return

CodeCan;}

YmodemFileTransmit::read(uint8_t*

buff,

udpClient-receiveDatagram(len);QByteArray

array

YmodemFileTransmit::write(uint8_t*

buff,

udpClient-writeDatagram((char*)buff,

len,

YmodemFileTransmit.hQT_BEGIN_NAMESPACE

namespace

{Q_OBJECTpublic:BootLoader(QWidget*

parent

nullptr);~BootLoader();YmodemFileTransmit*

slots:void

on_pushButtonConnect_clicked();void

on_pushButtonBrowse_clicked();void

on_pushButtonSend_clicked();void

readData();void

transmitStatus(YmodemFileTransmit::Status

status);private:Ui::BootLoader*

ui;bool

firemwareTransmitStatus;QUdpSocket*

udpClient;

4002BootLoader::BootLoader(QWidget*

parent):

{ui-setupUi(this);this-setWindowTitle(tr(E***rnetYmodem));this-setWindowIcon(QIcon(:/images/main.ico));ymodemFileTransmit

new

YmodemFileTransmit();connect(ymodemFileTransmit,

this,

SLOT(transmitProgress(int)));connect(ymodemFileTransmit,

SIGNAL(transmitStatus(YmodemFileTransmit::Status)),

this,

SLOT(transmitStatus(YmodemFileTransmit::Status)));udpClient

new

QUdpSocket(this);connect(udpClient,

this,

BootLoader::readData);firemwareTransmitStatus

false;ui-pushButtonSend-setEnabled(false);ui-pushButtonConnect-setEnabled(true);

{delete

BootLoader::on_pushButtonConnect_clicked()

{QByteArray

array;array.append(0x02);array.append(0x01);array.append(0xFF);array.append(0x07);array.append(0x01);array.append(0x09);array.append(0x03);QHostAddress

ret

BootLoader::on_pushButtonBrowse_clicked()

{QString

QDir::currentPath();ui-lineEditFilePath-setText(QFileDialog::getOpenFileName(this,

u8打开文件,

BootLoader::on_pushButtonSend_clicked()

{udpClient-abort();if(ui-lineEditFilePath-text().isEmpty())

tr(!!!),

file!));return;}if(firemwareTransmitStatus

false)

{ymodemFileTransmit-setFileName(ui-lineEditFilePath-text());ymodemFileTransmit-setIpAddress(SERVER_ADDR);ymodemFileTransmit-setPortNumber(SERVER_PORT);if(ymodemFileTransmit-startTransmit()

true)

true;ui-progressBar-setValue(0);ui-pushButtonSend-setText(tr(Cancel));ui-pushButtonConnect-setEnabled(false);}

else

tr(Closed));ui-pushButtonSend-setText(tr(Send));ui-pushButtonConnect-setEnabled(true);}}

else

{ymodemFileTransmit-stopTransmit();ui-pushButtonSend-setText(tr(Send));ui-pushButtonConnect-setEnabled(true);}

}void

{while(udpClient-hasPendingDatagrams())

{QNetworkDatagram

udpClient-receiveDatagram();QByteArray

receivedData

receivedData;if(receivedData.size()

receivedData[0]

{ui-pushButtonSend-setEnabled(true);ui-pushButtonConnect-setEnabled(false);}}

}void

BootLoader::transmitProgress(int

progress)

{ui-progressBar-setValue(progress);

}void

BootLoader::transmitStatus(Ymodem::Status

status)

YmodemFileTransmit::StatusEstablish:break;case

YmodemFileTransmit::StatusTransmit:break;case

YmodemFileTransmit::StatusFinish:firemwareTransmitStatus

false;QMessageBox::information(this,

tr(OK),

QMessageBox::Yes);ui-pushButtonSend-setText(tr(Send));ui-pushButtonSend-setEnabled(false);ui-pushButtonConnect-setEnabled(true);break;case

YmodemFileTransmit::StatusAbort:firemwareTransmitStatus

false;QMessageBox::warning(this,

tr(failure),

YmodemFileTransmit::StatusTimeout:firemwareTransmitStatus

false;QMessageBox::warning(this,

tr(failure),

tr(Closed));break;default:firemwareTransmitStatus

false;QMessageBox::warning(this,

tr(failure),