xModem 单片机代码

/***** ****************************************************************************** * *公司名称 : 天津众智创新科技有限公司 * *版权 (c) : TianJin Free Soar Innovations Technology Co., Ltd, All rights reserved. * *模块名 : xmodem 协议文件。 * *版本 : 0.1.0 * *作者 : LanLimin 2017-11-17 * *相关文件 : * *文件名 : xmodem.c * *文件描述 : 文件定义了xmodem协议文件。 * *----------------------------------------------------------------------------- *备注 : *----------------------------------------------------------------------------- * *修改信息 : *修改日期 版本 修改人 修改内容 * * ******************************************************************************* *****/ /* ******************************************************************************** * 包含文件 ******************************************************************************** */ #include "bsp.h" #include "Check.h" #include "str_lib.h" #include "xmodem.h" /* ******************************************************************************** * 变量定义 ******************************************************************************** */ typedef struct XMODEM_INFO_STRU { UINT16 ucBuffPosRead; UINT16 ucBuffPosWrite; UINT8 ucXmodemBuff[XMODEM_BUFF_SIZE_MAX]; } XMODEM_INFO; XMODEM_INFO xModemInfo; /* ******************************************************************************** * 内部函数声明 ******************************************************************************** */ static UINT16 uiXModem_RecvPacketCheck(BOOL bIsCRCMode, const UINT8 *pucFrameBuff, UINT16 uiPacketLen); static UINT16 uiXModem_ReadDataPacket(UINT8 *pucBuff, UINT16 uiPacketLen); static UINT16 uiXModem_ReadChar (UINT8 *pucData, UINT16 uiTimeOut); static void vXModem_FlushInput (void); static ERROR_TYPE eXModem_RecvivePolled(BOOL bIsCRCMode, UINT8 *pucRecvBuff, UINT16 uiRecvBytesLen); static ERROR_TYPE eXModem_TransmitEndPolled(void); static ERROR_TYPE eXModem_TransmitPolled(UINT8 ucPacketNum, BOOL bIsCRCMode, UINT8 *pucSendBuff, UINT16 uiSendBytesLen); extern void vXModem_Delay50Us(void); extern UINT16 uiXModem_RecvCallBack(UINT8 *pucBuff, UINT16 uiPacketLen); extern ERROR_TYPE eXModem_HWInit(UINT32 ulBaudRate); extern void vXModem_UartPutChar(UINT8 ucByte); extern UINT8 ucXModem_UartGetChar(void); extern void vXModem_UartRecvEnable(void); /*============================================================================== 函数名 : eXModem_Init() 功能 : 初始化协议栈 参数 : ulBaudRate：串口通信波特率 返回值 : 返回异常状态 作者 : LanLimin 日期 : 2017-11-17 备注 : ==============================================================================*/ ERROR_TYPE eXModem_Init(UINT32 ulBaudRate) { ERROR_TYPE eErrCode; do { xModemInfo.ucBuffPosRead = 0; xModemInfo.ucBuffPosWrite = 0; eErrCode = eXModem_HWInit(ulBaudRate); } while (0); return (eErrCode); } /*============================================================================== 函数名 : eXModem_TransmitPolled() 功能 : 发送处理程序 参数 : bIsCRCMode ：校验方式 pucSendBuff ：发送缓冲地址 uiSendBytesLen ：发送数据长度 返回值 : 返回异常状态 作者 : LanLimin 日期 : 2017-11-20 备注 : ==============================================================================*/ static ERROR_TYPE eXModem_RecvivePolled(BOOL bIsCRCMode, UINT8 *pucRecvBuff, UINT16 uiRecvBytesLen) { ERROR_TYPE eErrCode; UINT16 luiRecvByteSize; do { eErrCode = XMODEM_ERR_NOERR; if ((NULL == pucRecvBuff) || (0 == uiRecvBytesLen)) { eErrCode = XMODEM_ERR_INVAL_ARGU; break; } luiRecvByteSize = uiRecvBytesLen + ((DEFINE_YES == bIsCRCMode)?1:0) + 3; if (DEFINE_OK != uiXModem_ReadDataPacket(pucRecvBuff, luiRecvByteSize)) { eErrCode = XMODEM_ERR_IO; break; } if ((pucRecvBuff[0]!= ((UINT8)~pucRecvBuff[1])) ||(DEFINE_OK != uiXModem_RecvPacketCheck(bIsCRCMode, &pucRecvBuff[2], uiRecvBytesLen))) { eErrCode = XMODEM_ERR_TRANSMIT_ERROR; break; } } while (0); return (eErrCode); } /*============================================================================== 函数名 : eXModem_ReceiveProcess() 功能 : 接收处理程序 参数 : void 返回值 : 返回异常状态 作者 : LanLimin 日期 : 2017-11-20 备注 : ==============================================================================*/ ERROR_TYPE eXModem_ReceiveProcess(void) { ERROR_TYPE eErrCode; UINT16 luiBuffSize; UINT16 luiDoneState; UINT16 luiPacketNum; UINT16 luiCRCMode; UINT16 luiRetransNum; UINT16 luiRetryCtr; UINT8 lucSendCmdChar; UINT8 lucRecvChar; UINT8 ucRecvBuff[XMODEM_BUFF_SIZE_MAX]; lucSendCmdChar = XMODEM_CRC_CHR; luiPacketNum = 1; luiRetransNum = XMODEM_RETRY_MAX; luiCRCMode = DEFINE_NO; for (;;) { luiDoneState = DEFINE_NO; eErrCode = XMODEM_ERR_CONNECT_TIMEOUT; for (luiRetryCtr = 0; luiRetryCtr < XMODEM_RETRY_MAX; luiRetryCtr++) { if (lucSendCmdChar) { vXModem_UartPutChar(lucSendCmdChar); } if (DEFINE_OK != uiXModem_ReadChar(&lucRecvChar, XMODEM_DLY_1S)) { continue; } if (CAN == lucRecvChar) { if (DEFINE_OK != uiXModem_ReadChar(&lucRecvChar, XMODEM_DLY_1S)) { continue; } if (CAN == lucRecvChar) { vXModem_FlushInput(); vXModem_UartPutChar(ACK); eErrCode = XMODEM_ERR_CANCEL; luiDoneState = DEFINE_YES; break; } } if (EOT == lucRecvChar) { vXModem_FlushInput(); vXModem_UartPutChar(ACK); eErrCode = XMODEM_ERR_NOERR; luiDoneState = DEFINE_YES; break; } if (SOH == lucRecvChar) { luiBuffSize = XMODEM_DATA_SIZE_SOH; } else if (STX == lucRecvChar) { luiBuffSize = XMODEM_DATA_SIZE_STX; } else { continue; } if (XMODEM_CRC_CHR == lucSendCmdChar) { luiCRCMode = DEFINE_YES; } lucSendCmdChar = 0; ucRecvBuff[0] = lucRecvChar; eErrCode = eXModem_RecvivePolled(luiCRCMode, &ucRecvBuff[1], luiBuffSize); if ((XMODEM_ERR_NOERR != eErrCode) || ((luiPacketNum != ucRecvBuff[1]) && ((luiPacketNum - 1) != ucRecvBuff[1]))) { vXModem_FlushInput(); vXModem_UartPutChar(NAK); break; } if (luiPacketNum == ucRecvBuff[1]) { if (DEFINE_OK == uiXModem_RecvCallBack(&ucRecvBuff[3], luiBuffSize)) { ; } luiPacketNum++; luiPacketNum &= 0x00FF; luiRetransNum = XMODEM_RETRY_MAX + 1; } if (0 == --luiRetransNum) { eErrCode = XMODEM_ERR_CONNECT_TIMEOUT;