//----------------------------------------------------------------------
// Main Test for the DS2450 - 1-Wire Quad A/D Converter
//
int main(int argc, char **argv)
{
char msg[45];
int NumDevices = 0;
int i = 0;
int start_address = 0x8;
int end_address = 0x11;
float prslt[4];
uchar ctrl[16];
int try_overdrive=0;
int portnum=0;
//------------------------------------------------------
// Introduction header
printf("\n/---------------------------------------------\n");
printf(" Channels A to D Application - V2.00\n"
" The following is a test to excersize a\n"
" DS2450 - 1-Wire Quad A/D Converter \n\n");
printf(" Press any CTRL-C to stop this program.\n\n");
printf(" Output [Serial Number(s) ... Channel 'A' Value ... Channel 'B' Value ... \n"
" ... Channel 'C' Value ... Channel 'D' Value] \n\n");
// check for required port name
if (argc != 2)
{
printf("1-Wire Net name required on command line!\n"
" (example: \"COM1\" (Win32 DS2480),\"/dev/cua0\" "
"(Linux DS2480),\"{1,5}\" (Win32 TMEX)\n");
exit(1);
}
// attempt to acquire the 1-Wire Net
if ((portnum = owAcquireEx(argv[1])) < 0)
{
OWERROR_DUMP(stdout);
exit(1);
}
// success
printf("Port opened: %s\n",argv[1]);
// Find the device(s)
NumDevices = FindDevices(portnum, &FamilySN[0], 0x20, MAXDEVICES);
if (NumDevices>0)
{
printf("\n");
printf("Device(s) Found: \n");
for (i = 0; i < NumDevices; i++)
{
PrintSerialNum(FamilySN[i]);
printf("\n");
if (SetupAtoDControl(portnum, FamilySN[i], &ctrl[0], &msg[0]))
{
printf("A/D settings found\n %s\n", msg);
}
else
printf("\n\n\n ERROR, device set up unsuccessful!\n");
if (WriteAtoD(portnum, try_overdrive, FamilySN[i], &ctrl[0], start_address, end_address))
{
printf("\nA/D settings written");
}
else
printf("\n\n\n ERROR, device not found!\n");
}
}
// (stops on CTRL-C)
do
{
// read the current channels
for (i = 0; i < NumDevices; i++)
{
printf("\n\n");
PrintSerialNum(FamilySN[i]);
if (!DoAtoDConversion(portnum, try_overdrive, FamilySN[i]))
{
printf("\nError doing conversion, verify device present: %d\n",
(int)owVerify(portnum,FALSE));
}
if (ReadAtoDResults(portnum, try_overdrive, FamilySN[i], &prslt[0], &ctrl[0]))
{
int c = 0;
for (c = 0; c < 4; c++)
{
printf(" %1.3f ", prslt[c]);
}
}
else
{
printf("\nError reading channel, verify device present: %d\n",
(int)owVerify(portnum,FALSE));
}
}
}
while (!key_abort());
// release the 1-Wire Net
owRelease(portnum);
printf("Closing port %s.\n", argv[1]);
exit(0);
return 0;
}
// -------------------------------------------------------------------------
// SUBROUTINE - GetDir
//
// This routine looks at the DS2401 serial numbers or the DS2450 volts to
// determine which direction the wind is blowing.
//
// Returns: The direction in a 0-15 order and 16 for no DS2401s found
//
int GetDir(int portnum, WeatherStruct *wet)
{
SwitchProps st;
uchar temp_dir[MAXDIR][8];
int i,j;
int numdir = 0;
int firstmatch = 0, secondmatch = 0;
int firstindex = 0;
int found = TRUE;
int ret = 16;
float prslt[4];
temp_dir[0][0] = 0x00;
if(wet->weather_a)
{
st.Chan_A = FALSE;
st.Chan_B = TRUE;
if(SetSwitch12(portnum, &wet->dsdir[0], st))
{
numdir = FindDevices(portnum, &temp_dir[0], DIR_FAMILY, MAXDIR);
}
else
printf("Error on setting up the switch\n");
if(numdir == 0)
ret = 16;
if(numdir == 2)
{
for(i=0; i<8; i++)
{
for(j=0; j<8; j++)
if(temp_dir[0][j] != wet->ds2401[i][j])
{
found = FALSE;
break;
}
else
found = TRUE;
if(found)
{
firstindex = i;
firstmatch = conv[i];
found = FALSE;
break;
}
}
for(i=0; i<8; i++)
{
if(i != firstindex)
{
for(j=0; j<8; j++)
{
if(temp_dir[1][j] != wet->ds2401[i][j])
{
found = FALSE;
break;
}
else
found = TRUE;
}
}
if(found)
{
secondmatch = conv[i];
break;
}
}
if(((firstmatch == 0) || (secondmatch == 0)) &&
((firstmatch == 14) || (secondmatch == 14)))
ret = 15;
else
ret = (firstmatch+secondmatch)/2;
}
if(numdir == 1)
{
for(i=0; i<8; i++)
{
found = TRUE;
for(j=0; j<8; j++)
if(temp_dir[0][j] != wet->ds2401[i][j])
found = FALSE;
if(found)
{
ret = conv[i];
break;
}
}
}
st.Chan_A = FALSE;
st.Chan_B = FALSE;
if(!SetSwitch12(portnum, &wet->dsdir[0], st))
{
msDelay(10);
if(!SetSwitch12(portnum, &wet->dsdir[0], st))
{
printf("Failed to close channel B\n");
}
}
}
else if(wet->weather_b)
{
// read wind direction for the DS2450 weather station
if(DoAtoDConversion(portnum, FALSE, &wet->dsdir[0]))
{
if(ReadAtoDResults(portnum, FALSE, &wet->dsdir[0], &prslt[0], &wet->ctrl[0]))
{
for(i=0; i<16; i++)
{
if( ((prslt[0] <= (float)conv_table[i][0]+0.25) &&
(prslt[0] >= (float)conv_table[i][0]-0.25)) &&
((prslt[1] <= (float)conv_table[i][1]+0.25) &&
(prslt[1] >= (float)conv_table[i][1]-0.25)) &&
((prslt[2] <= (float)conv_table[i][2]+0.25) &&
(prslt[2] >= (float)conv_table[i][2]-0.25)) &&
((prslt[3] <= (float)conv_table[i][3]+0.25) &&
(prslt[3] >= (float)conv_table[i][3]-0.25)) )
{
ret = i;
break;
}
}
}
else
{
printf("\n");
printf("\nError reading channel, verify device present: %d\n",
(int)owVerify(portnum, FALSE));
}
}
}
return ret;
}
