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pharse.c
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/******************************************************************
parse.c
创建者：黄洪磊
时间：2018/4/23
功能：将raw信息进行解析成phy信息
注意：真正使用的是parse3
*******************************************************************/
#include "pharse.h"
extern int bit_mask(int nbits);
/*for bit <=8*/
char bit_get(const int start,const int size,const char target)
{
int s = start;
if(s > 8)
{
s = s%8;
}
char tmp = 0;
int z = size;
char t = target;
while(z>0)
{
tmp |= 1<<s;
s--;
z--;
}
t = (t&tmp) >> (s - z +1);
return t;
}
/*for bit >8*/ /*unsigned char? char?*/
long nbyte_get(int start,int size, unsigned char *target)
{
int nbytes = size/8 +1;
//double ret = 0;
char tmp[8];
long ret = 0;
if(start%8 != 7)
{
tmp[0] = bit_get(start,start%8+1,target[start/8]);
int i = 1;
while(nbytes>0)
{
tmp[i] = target[start/8 + i];
nbytes--;
i++;
}
int t = 0;
for(i = size/8 ;i>=0;i--)
{
ret = ret |(tmp[i] << (8*t));
//printf("i is %d ret is %ld\n",i,ret);
t++;
}
//printf("ret is :%ld\n",ret);
}
else if(start%8 == 7)
{
int i = 0;
while(nbytes > 1)
{
tmp[i] = target[start/8 + i];
i++;
nbytes --;
}
tmp[i] = bit_get(start,size%8,target[start/8+i]);
int t = 0;
for(i = size/8 ;i>=0;i--)
{
if(i == size/8)
{
ret = ret |tmp[size/8];
}
else
{
ret = ret |(tmp[i] << (8*t + (size%8)));
t++;
}
//printf("i is %d ret is %ld\n",i,ret);
}
//printf("ret is :%ld\n",ret);
}
return ret;
}
//extern BO_Unit_t * BO_List[50];
void pharse(struct can_frame *frame,BO_Unit_t **BO_List)
{
int i = 0;
while(BO_List[i] != NULL)
{
if(frame->can_id == BO_List[i]->message_id) //detect the can id
{
/*ID Mached*/
int t = 0;
while(BO_List[i]->SG_List[t] != NULL) /*SG_LOOP*/
{
/*motorola Mode*/
if(0 == BO_List[i]->SG_List[t]->Bit_order)
{
int size = BO_List[i]->SG_List[t]->signal_size;
int start = BO_List[i]->SG_List[t]->start_bit;
double tmp = 0;
/*Pharse the motorla mode msg!*/
if(size <= 8)
{
tmp = (double)bit_get(start,size,frame->data[start/8]);
}
else if(size > 8)
{
tmp = (double)nbyte_get(start,size, frame->data);
}
/*value type_ signed or unsigned*/
if(BO_List[i]->SG_List[t]->val_type)
{
if(8 == size)
{
tmp = (signed char)tmp;
tmp = (double)tmp;
}
else if(16 == size)
{
tmp = (short)tmp;
//tmp = (double)tmp;
}
else if(32 == size)
{
tmp = (float)tmp;
//tmp = (double)tmp;
}
}
/*Factor and Offset*/
tmp = tmp * BO_List[i]->SG_List[t]->facator + BO_List[i]->SG_List[t]->offset;
/*Max and Min*/
if(tmp > BO_List[i]->SG_List[t]->maximum)
{
tmp = BO_List[i]->SG_List[t]->maximum;
}
if(tmp < BO_List[i]->SG_List[t]->minimum)
{
tmp = BO_List[i]->SG_List[t]->minimum;
}
/*assign value*/
BO_List[i]->SG_List[t]->value = tmp;
}
t++;
}
break;
}
i++;
}
//printf("Number of BO:%d\n",i);
}
void pharse2(struct can_frame *frame,BO_Unit_t **BO_List)
{
int i = 0;
while(BO_List[i] != NULL)
{
//printf("bolist loop \n ");
if(frame->can_id == BO_List[i]->message_id) //detect the can id
{
/*ID Mached*/
#ifdef SHOW
system("clear");
printf("BO_ %d %s\n",BO_List[i]->message_id,BO_List[i]->message_name);
#endif // SHOW
//printf("\r");
int t = 0;
while(BO_List[i]->SG_List[t] != NULL) /*SG_LOOP*/
{
#ifdef SHOW
printf("%s ",BO_List[i]->SG_List[t]->signal_name);
#endif // SHOW
/*motorola Mode*/
if(0 == BO_List[i]->SG_List[t]->Bit_order)
{
int size = BO_List[i]->SG_List[t]->signal_size;
int start = BO_List[i]->SG_List[t]->start_bit;
double tmp = 0;
/*Pharse the motorla mode msg!*/
//bite < 8
if(size <= 8)
{
tmp = ( (frame->data[start/8] ) >> (start%8 - size +1)) & bit_mask(size);
// printf("%lf\r",tmp);
}
else if(size > 8 && size <= 16)
{
//printf("==\r");
if(start / 8 == 7)
{
tmp = ((short)(frame->data[start/8 ]<<8 | frame->data[start/8 + 1]) >> (size % 8))& bit_mask(size);
}
tmp = (short)(frame->data[start/8 ]<<8 | frame->data[start/8 + 1]) & bit_mask(size);
// printf(">>%lf\r",tmp);
}
/*value type_ signed or unsigned*/
else if(size >16)
{
tmp = ntohl(*(long *)(frame->data+(start/8))) & bit_mask(size);
}
if(BO_List[i]->SG_List[t]->val_type)
{
if(8 == size)
{
tmp = (signed char)tmp;
tmp = (double)tmp;
}
else if(16 == size)
{
tmp = (short)tmp;
//tmp = (double)tmp;
}
else if(32 == size)
{
tmp = (float)tmp;
//tmp = (double)tmp;
}
}
/*Factor and Offset*/
tmp = tmp * BO_List[i]->SG_List[t]->facator + BO_List[i]->SG_List[t]->offset;
/*Max and Min*/
if(tmp > BO_List[i]->SG_List[t]->maximum)
{
tmp = BO_List[i]->SG_List[t]->maximum;
}
if(tmp < BO_List[i]->SG_List[t]->minimum)
{
tmp = BO_List[i]->SG_List[t]->minimum;
}
/*assign value*/
BO_List[i]->SG_List[t]->value = tmp;
/*Print nuit*/
#ifdef SHOW
printf(">>%lf ",tmp);
printf(" %s ", BO_List[i]->SG_List[t]->unit);
#endif // SHOW
}
#ifdef SHOW
printf("\n");
#endif // SHOW
t++;
}
break;
}
i++;
}
//printf("Number of BO:%d\n",i);
}
//if the signal cross bytes
int CrossByte(int start, int size)
{
int tmp = (start % 8)+1 -size;
if( tmp < 0 )
{
if(tmp < -16)
{
return 4;
}
else if(tmp < -8)
{
return 3;
}
else
return 2;
}
return 0;
}
int CrossBytesLocation(int start, int size,int crossbyte)
{
int offset = 0;
if(crossbyte == 2)
offset = 8;
else if(crossbyte == 3)
offset = 16;
else if(crossbyte == 4)
offset = 24;
int ret = 1 + offset -(size - (start % 8));
return ret ;
}
/*
raw信息解析函数，将frame中的raw信息解析为phy信息
放入BO_List中的value中
struct can_frame *frame：要解析的frame
BO_Unit_t **BO_List：BO_List结构体
*/
void parse3(struct can_frame *frame,BO_Unit_t **BO_List)
{
int i = 0;
while(BO_List[i] != NULL)
{
//printf("bolist loop \n ");
if(frame->can_id == BO_List[i]->message_id) //detect the can id
{
/*ID Mached*/
int t = 0;
while(BO_List[i]->SG_List[t] != NULL) /*SG_LOOP*/
{
if(0 == BO_List[i]->SG_List[t]->Bit_order)
{
int size = BO_List[i]->SG_List[t]->signal_size;
int start = BO_List[i]->SG_List[t]->start_bit;
double tmp = 0;
/*Pharse the motorla mode msg!*/
int crossBytes = CrossByte(start, size);
if(crossBytes)/*cross bytes*/
{
int offset = CrossBytesLocation(start, size, crossBytes);
if(2 == crossBytes)
{
tmp = ((((frame->data[start/8])<<8) | (frame->data[start/8+1])) >> (offset)) & bit_mask(size);
}
if(3 == crossBytes)
{
tmp =((((frame->data[start/8])<<16) | (frame->data[start/8+1]<<8)|frame->data[start/8+2]) >> (offset)) & bit_mask(size);
}
}
else
{
tmp = ( (frame->data[start/8] ) >> (start%8 - size +1)) & bit_mask(size);
}
/*value type_ signed or unsigned*/
if(BO_List[i]->SG_List[t]->val_type)
{
if(8 == size)
{
tmp = (signed char)tmp;
tmp = (double)tmp;
}
else if(16 == size)
{
tmp = (short)tmp;
//tmp = (double)tmp;
}
else if(32 == size)
{
tmp = (float)tmp;
//tmp = (double)tmp;
}
}
/*Factor and Offset*/
tmp = tmp * BO_List[i]->SG_List[t]->facator + BO_List[i]->SG_List[t]->offset;
/*Max and Min*/
if(tmp > BO_List[i]->SG_List[t]->maximum)
{
tmp = BO_List[i]->SG_List[t]->maximum;
}
if(tmp < BO_List[i]->SG_List[t]->minimum)
{
tmp = BO_List[i]->SG_List[t]->minimum;
}
/*assign value*/
BO_List[i]->SG_List[t]->value = tmp;
/*Print nuit*/
#ifdef SHOW
printf(">>%lf ",tmp);
printf(" %s ", BO_List[i]->SG_List[t]->unit);
#endif // SHOW
}
#ifdef SHOW
printf("\n");
#endif // SHOW
t++;
}
break;
}
i++;
}
//printf("Number of BO:%d\n",i);
}