xmodem128 串口下载文件

/**************************************************************************//** * @file xmodem128.c * @version V1.00 * $Revision: 3 $ * $Date: 2018.8.14 * @brief * * @note * Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved. *****************************************************************************/ #include <stdio.h> #include "Nano100Series.h" #include "Includes.h" #define Debug(fmt,args...) ((void *)0) static uint8_t Buff[REV_BUFF_SIZE]; #define XMODEM_SendByte(a) com_SendByte(a) #define XMODEM_RevByteSlow(pa) com_RevByte(pa,300) #define XMODEM_RevByteFast(pa) com_RevByte(pa,3) #define XMODEM_Delayus(a) com_delayus(a) uint16_t XMODEM_CheckSum(uint8_t *pBuff,uint8_t Size) { uint16_t CheckSum, i; CheckSum = 0; while(Size--) { CheckSum = CheckSum ^ (int) *pBuff++ << 8; for(i = 0; i < 8; i++) { if(CheckSum & 0x8000) CheckSum = CheckSum << 1 ^ 0x1021; else CheckSum = CheckSum << 1; } } return CheckSum; } uint8_t XMODEM_RevPackage(uint8_t Cmd) { uint8_t Temp,Retry,Data; memset(Buff,0,REV_BUFF_SIZE); Retry = 100; Temp = 0; while(Retry--) { if(Cmd == 'C') { Debug("xmodem128 start transmet...\r\n"); XMODEM_Delayus(5000); } else if(Cmd !=XMODEM_CMD_ACK ) { XMODEM_Delayus(10000); } else { XMODEM_Delayus(50); } XMODEM_SendByte(Cmd); if( XMODEM_RevByteSlow( &Data )) { do { if(Temp >= PACKAGE_SIUZE) { Debug("receve one pacage\r\n"); return Temp; } Buff[Temp++] =Data; }while( XMODEM_RevByteFast( &Data) ); return (Temp); } else { Debug("receve byte timeout\r\n"); } } return 0; } uint8_t XMODEM_Loading(void) { uint8_t NumA,NumB,CMD,StartOk,Retry=0xff; uint32_t RevBytes =0,packageSize=0; XMODEMM_TYPE *MyData; MyData =(XMODEMM_TYPE *)Buff; CMD ='C'; //启动XMODEMM数据传输 NumA =0x01; StartOk =FALSE; do { NumB =~NumA; packageSize =XMODEM_RevPackage( CMD ); if (packageSize >= PACKAGE_SIUZE) //正确的收到了第一包/一个数据 { Debug("receve new package\r\n"); if(( MyData->PackNum1 == NumA)&&(MyData->PackNum0 == NumB)) { //加入数据校验 StartOk =TRUE; Retry =200; if( XMODEM_CheckSum(Buff + 3, PACKAGE_SIUZE - 3) == 0x00) { if(image_sotre(Buff + 3, 128)) { Retry =100; NumA++; RevBytes+=128; CMD =XMODEM_CMD_ACK; Debug("storing ok revbyes =%d \r\n",RevBytes); continue; } Retry =0; } else { Debug("package isnt ok\r\n"); CMD =XMODEM_CMD_NAK; } } else { Debug("package numbuer is wring\r\n"); CMD =XMODEM_CMD_NAK; Retry --; } } else if( StartOk != TRUE) { Debug("xmodem start trans again\r\n"); CMD ='C'; NumA =0x01; Retry --; } else { Debug("something has error\r\n"); CMD =XMODEM_CMD_NAK; Retry --; } }while(( MyData->Header!= XMODEM_CMD_EOT)&&(MyData->Header != XMODEM_CMD_CAN)&& Retry ); if(Retry > 0) { CMD =XMODEM_CMD_ACK; XMODEM_SendByte( CMD ); } else { CMD =XMODEM_CMD_DEL; XMODEM_SendByte( CMD ); } com_XmodemTransStatus(FALSE); if(MyData->Header == XMODEM_CMD_EOT) { Debug("xmodem received done nbytes=%d\r\n",RevBytes); return TRUE; } else { Debug("xmodem cancel\r\n"); } return FALSE; }