M21/user/IAP.c

/**********************************************************************************
 * File Name: IAP.c
 * Function Describe:In application program
 * Relate Module:
 * Explain:
 * Writer:  ShiLiangWen
 * Date:	2015.6.9 
*********************************************************************************************/
#include "includes.h"

SUT_PRODUCT_PARA sutProductPara;
update_hdr_t sutHeader;
unsigned short g_usTid=0;

static unsigned char FileMD5[16]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
int g_ulFileLen=0;//文件长度
int g_ulDFileLen=0;//已下载文件长度
int g_ulOffset=0;
int g_ulLength=0;


uint8_t IapRxBuf[IAP_RX_BUF];
uint16_t IapRxLen;

/*****************************************************************************************
IapCheckFileMD5
成功返回1 
失败返回0
******************************************************************************************/
int IapCheckFileMD5(uint32_t FileLen,uint8_t MD5[])
{
	MD5_CTX mdContext;
    unsigned short temp;
	unsigned char data[1024];
	char tembuf[5];
	unsigned char RMD5[16];
	uint32_t offset=0;
	uint32_t len;
	int i,j;

    //计算MD5
	MD5Init(&mdContext);
	j=0;
	for(i=0;i<FileLen;i+=2){
   		temp=STMFLASH_ReadHalfWord((FLASH_APP1_ADDR+i));
		data[j++]=(unsigned char)(temp&0xff);
	    data[j++]=(temp>>8)&0xff;
		if(j==1024){
			MD5Update(&mdContext,data,1024);
			j=0;
		}
	}
	if(j!=0){
		MD5Update(&mdContext,data,j);	
	}
	MD5Final(&mdContext);
#if 1	 //debug trace md5
	sprintf((char *)data,"FileSize=%d  MD5=",FileLen);
	for(i=0;i<16;i++){
		sprintf(tembuf,"%02X",mdContext.digest[i]);
		strcat((char *)data,tembuf);
	}
	strcat((char *)data,"\r\n");
	IapTrace((char *)data);
#endif
	//check
	for(i=0;i<16;i++){
		if(MD5[i]!=mdContext.digest[i])break;
	}
	if(i<16)return 0;
	else return 1;
}
/*****************************************************************************************
IapWriteFileData
******************************************************************************************/
int IapWriteFileData(uint32_t Offset,uint32_t Length,uint8_t *pData)
{
	unsigned short iapbuf[1024];
	uint16_t i,temp;
	uint16_t len=0;
	if(0!=(Offset%2))return 0;
	WritePageData(FLASH_APP1_ADDR+Offset,pData,Length);
//	for(i = 0; i < Length; i+=2)
//	{
//		//数据8位融合为16位
//		temp = (((uint16_t)pData[i+1])<<8) + ((uint16_t)pData[i]);
//		iapbuf[len] = temp;
//		len++;//完成之后receiveDataCur++;
//	}
//
//	STMFLASH_Write((FLASH_APP1_ADDR+Offset),iapbuf,len);
//		
	return 1;
}

/*****************************************************************************************
MakeFoTaVersionReq
******************************************************************************************/
int MakeFoTaVersionReq(char *txbuf)
{
	update_version_req_t *pUpdateVersionReq;
	pUpdateVersionReq=(update_version_req_t *)txbuf;
	memset(pUpdateVersionReq,0,sizeof(update_version_req_t));
	pUpdateVersionReq->hdr.magic=FOTA_MAGIC;
	pUpdateVersionReq->hdr.protocol=UPDATE_PROTOCOL;
	pUpdateVersionReq->hdr.code=UPDATE_CODE_VERSION_REQ;
	sprintf(pUpdateVersionReq->hdr.dev_id,"%lu",sutProductPara.PSN);
	pUpdateVersionReq->hdr.tid=++g_usTid;
	pUpdateVersionReq->hdr.count=sizeof(update_version_req_t)-sizeof(update_hdr_t);	
	strcpy(pUpdateVersionReq->product,sutProductPara.ProductName);
	pUpdateVersionReq->version=sutProductPara.ProductVersion;

	return sizeof(update_version_req_t);
}
/*****************************************************************************************
MakeFoTaDataReq
******************************************************************************************/
int MakeFoTaDataReq(char *txbuf,int offset,int length)
{
	update_data_req_t *pUpdateDataReq;
	pUpdateDataReq=(update_data_req_t *)txbuf;
	memset(pUpdateDataReq,0,sizeof(update_data_req_t));
	pUpdateDataReq->hdr.magic=FOTA_MAGIC;
	pUpdateDataReq->hdr.protocol=UPDATE_PROTOCOL;
	pUpdateDataReq->hdr.code=UPDATE_CODE_DATA_WITH_CRC_REQ;
	sprintf(pUpdateDataReq->hdr.dev_id,"%lu",sutProductPara.PSN);
	pUpdateDataReq->hdr.tid=++g_usTid;
	pUpdateDataReq->hdr.count=sizeof(update_data_req_t)-sizeof(update_hdr_t);
	memcpy(pUpdateDataReq->version_md5,FileMD5,16);
	pUpdateDataReq->offset=offset;
	pUpdateDataReq->length=length;

	return sizeof(update_data_req_t);
}

/*****************************************************************************************
MakePcTaVersionReq
******************************************************************************************/
int MakePcTaVersionReq(char *txbuf)
{
	update_version_req_t *pUpdateVersionReq;
	pUpdateVersionReq=(update_version_req_t *)txbuf;
	memset(pUpdateVersionReq,0,sizeof(update_version_req_t));
	pUpdateVersionReq->hdr.magic=PCTA_MAGIC;
	pUpdateVersionReq->hdr.protocol=UPDATE_PROTOCOL;
	pUpdateVersionReq->hdr.code=UPDATE_CODE_VERSION_REQ;
	sprintf(pUpdateVersionReq->hdr.dev_id,"%lu",sutProductPara.PSN);
	pUpdateVersionReq->hdr.tid=sutProductPara.Rand;//对于PC升级，传输伪随机数用于加密
	pUpdateVersionReq->hdr.count=sizeof(update_version_req_t)-sizeof(update_hdr_t);	
	strcpy(pUpdateVersionReq->product,sutProductPara.ProductName);
	pUpdateVersionReq->version=sutProductPara.ProductVersion;

	g_usTid=0;

	return sizeof(update_version_req_t);
}
/*****************************************************************************************
MakePcTaDataReq
******************************************************************************************/
int MakePcTaDataReq(char *txbuf,int offset,int length)
{
	update_data_req_t *pUpdateDataReq;
	pUpdateDataReq=(update_data_req_t *)txbuf;
	memset(pUpdateDataReq,0,sizeof(update_data_req_t));
	pUpdateDataReq->hdr.magic=PCTA_MAGIC;
	pUpdateDataReq->hdr.protocol=UPDATE_PROTOCOL;
	pUpdateDataReq->hdr.code=UPDATE_CODE_DATA_WITH_CRC_REQ;
	sprintf(pUpdateDataReq->hdr.dev_id,"%lu",sutProductPara.PSN);
	pUpdateDataReq->hdr.tid=++g_usTid;
	pUpdateDataReq->hdr.count=sizeof(update_data_req_t)-sizeof(update_hdr_t);
	memcpy(pUpdateDataReq->version_md5,FileMD5,16);
	pUpdateDataReq->offset=offset;
	pUpdateDataReq->length=length;

	return sizeof(update_data_req_t);
}
/*****************************************************************************************
IapGetUpdateData
******************************************************************************************/
void IapGetUpdateData(uint32_t magic,uint32_t offset)
{
	int len;
	if(PCTA_MAGIC==magic){
		len=MakePcTaDataReq((char *)TxBuffer1,offset,1024);
		Uart1Send((char *)TxBuffer1,len);		
	}else if(FOTA_MAGIC==magic){
		len=MakeFoTaDataReq((char *)TxBuffer3,offset,1024);	
		ModemSendUdpData(0,TxBuffer3,len);
	}	
}
/*****************************************************************************************
IapGetUpdateVersion
******************************************************************************************/
void IapGetUpdateVersion(uint32_t magic)
{
	int len;
	if(PCTA_MAGIC==magic){
		len=MakePcTaVersionReq((char *)TxBuffer1);
		Uart1Send((char *)TxBuffer1,len);
	}else if(FOTA_MAGIC==magic){
		len=MakeFoTaVersionReq((char *)TxBuffer3);
		ModemSendUdpData(0,TxBuffer3,len);
	}
}

/************************************************************************************
IapRecvMsgHandle
处理接收到的数据
*************************************************************************************/
int IapRecvMsgHandle(unsigned char *pData, unsigned short DataLen)
{
	int i;
	char id[16];
	unsigned short crc,CRC16;
	unsigned short ReadBuf[4];
	char buf[100];
	uint32_t len,offset;
	unsigned char code;
	unsigned short count;
	update_hdr_t *pHeader;
	update_version_rsp_t *pVersionRsp;
	update_data_rsp_t	*pDataRsp;
	pHeader=(update_hdr_t *)pData;
	if(pHeader->magic != FOTA_MAGIC && pHeader->magic != PCTA_MAGIC)return -1;
	if(pHeader->protocol != UPDATE_PROTOCOL )return -2;
	sprintf(id,"%lu",sutProductPara.PSN);
	if(0!=strcmp(id,pHeader->dev_id))return -3;
	code= pHeader->code;
	count= pHeader->count;
	if(code==UPDATE_CODE_VERSION_REQ){
		if(count!=(sizeof(update_version_rsp_t)-sizeof(update_hdr_t)))return -4;
		pVersionRsp= (update_version_rsp_t *)pData;
		memcpy(FileMD5,pVersionRsp->version_md5,16);
		g_ulFileLen=pVersionRsp->size;	
		if(0==g_ulFileLen)return -5;
		g_ulOffset=0;
		g_ulLength=0;
		g_ulDFileLen=0;
		if(FOTA_MAGIC==pHeader->magic){
			g_ucLoginServer=1;
		}else{
			NewTask(TASK_PC_UPDATE);
		}
		IapGetUpdateData(pHeader->magic,g_ulOffset);
		
		return 1;
	}else if(code == UPDATE_CODE_DATA_WITH_CRC_REQ){
		pDataRsp = (update_data_rsp_t*)pData;
		//判断MD5是否被更新
		for(i=0;i<16;i++){
			if(FileMD5[i]!=pDataRsp->version_md5[i])break;
		}
		if(i<16){//MD5被更新，申请重新下载
			IapTrace("MD5 Modify!ReDO!\r\n");
			IapGetUpdateVersion(pHeader->magic);
			return -6;		
		}
		len=pDataRsp->length;
		offset=pDataRsp->offset;
		//length和offset不对，申请重新下载
		if(len<2 || offset!=g_ulOffset || (len+g_ulOffset)>(g_ulFileLen+2)){
			IapTrace("Length or Offset error!ReDO!\r\n");
			IapGetUpdateVersion(pHeader->magic);
			return -7;	
		}
		len-=2;//实际数据长度应去掉2字节的CRC
		//CRC校验
		CRC16=crc16_calc(0,pDataRsp->data,len);   
		crc=((unsigned short)pDataRsp->data[len+1]&0xff)<<8;
		crc+=(unsigned short)pDataRsp->data[len]&0xff;
		if(crc!=CRC16){	
			//校验错误，申请重新下载
			IapTrace("Check CRC error!ReDO!\r\n");
			IapGetUpdateData(pHeader->magic,g_ulOffset);
			return -8;
		}
		//==CRC校验成功，更新FLASH ===
		//第一次更新，写修改IAP标志位
		if(0==g_ulOffset){
			sutProductPara.IapFlag=0x00;
			SaveProductParaToFlash();
		}
		//对于PC传输，需要先解密
		if(PCTA_MAGIC==pHeader->magic){
			for(i=0;i<len;i++)pDataRsp->data[i]=pDataRsp->data[i] ^ sutProductPara.Rand; 	
		}
	    IapWriteFileData(g_ulOffset,len,pDataRsp->data);
		g_ulDFileLen+=len;
		g_ulOffset+=len;
		//判断是否结束？
		if(g_ulDFileLen>=g_ulFileLen){
			//下载结束,检查MD5
			if(0==IapCheckFileMD5(g_ulFileLen,FileMD5)){
				//校验MD5错误，重新下载
				IapTrace("Check MD5 error!ReDO!\r\n");
				IapGetUpdateVersion(pHeader->magic);
				return -9;
			}
			//---校验成功，下载完成---
			//修改标志位，以便可以运行APP
			sutProductPara.IapFlag=0x88;
			SaveProductParaToFlash();
			return 0;
		}
		//未结束，启动下一包下载
		sprintf(buf,"HBD=%d\r\n",g_ulOffset);//Has been downloaded
		IapTrace(buf);
		IapGetUpdateData(pHeader->magic,g_ulOffset);
		return 2;
	}
}

typedef  void (*iapfun)(void);				//定义一个函数类型的参数.
iapfun jump2app;

//设置栈顶地址
//addr:栈顶地址
__asm void MSR_MSP(u32 addr) 
{
    MSR MSP, r0 			//set Main Stack value
    BX r14
}

//跳转到应用程序段
//appxaddr:用户代码起始地址.
void iap_load_app(u32 appxaddr)
{
//	if(((*(vu32*)appxaddr)&0x2FFE0000)==0x20000000)	//检查栈顶地址是否合法.0x20000000是sram的起始地址,也是程序的栈顶地址
//	{ 
		jump2app=(iapfun)*(vu32*)(appxaddr+4);		//用户代码区第二个字为程序开始地址(复位地址)		
		MSR_MSP(*(vu32*)appxaddr);					//初始化APP堆栈指针(用户代码区的第一个字用于存放栈顶地址)
		jump2app();									//跳转到APP.
//	}
//	else
//	{
//		IapTrace("program in flash is error\r\n");
//	}
}

//跳转到app区域运行
void iap_jump_app_s(void)
{
	iap_load_app(FLASH_APP1_ADDR);//跳转到app的复位向量地址
}



//设置app固化配置
void iap_set_flag_s(void)
{
//	Test_Write(APP_CONFIG_ADDR,APP_CONFIG_SET_VALUE);
//	printf("ok\r\n");
}

//清除app固化配置
void iap_clear_flag(void)
{
//	Test_Write(APP_CONFIG_ADDR,APP_CONFIG_CLEAR_VALUE);
//	printf("ok\r\n");
}


/***********************************************************************************/