// Returns:
// OK - if new record retrieved
// ERROR - if there was an interface error
// ERROR_ABORT - if there is no new record (WH1080 generates new records at
// best once a minute)
static int readStationData (WVIEWD_WORK *work)
{
WH1080_IF_DATA* ifWorkData = (WH1080_IF_DATA*)work->stationData;
int currentPosition, readPosition, index, retVal;
if ((*(work->medium.usbhidInit))(&work->medium) != OK)
{
return ERROR;
}
// Read the WH1080 fixed block:
retVal = readFixedBlock(work, &wh1080Work.controlBlock[0]);
if (retVal == ERROR_ABORT)
{
// Try again later (bad magic number):
(*(work->medium.usbhidExit))(&work->medium);
return ERROR_ABORT;
}
else if (retVal == ERROR)
{
// USB interface error:
(*(work->medium.usbhidExit))(&work->medium);
return ERROR;
}
// Get the current record position; the WH1080 reports the record it is
// building, thus if it changes we need the prior just finished record:
currentPosition = (int)getUSHORT(&wh1080Work.controlBlock[WH1080_CURRENT_POS]);
// Make sure the index is aligned on 16-byte boundary:
if ((currentPosition % 16) != 0)
{
// bogus, try again later:
(*(work->medium.usbhidExit))(&work->medium);
return ERROR_ABORT;
}
// Is this the first time?
if (wh1080Work.lastRecord == -1)
{
// Yes.
wh1080Work.lastRecord = currentPosition;
(*(work->medium.usbhidExit))(&work->medium);
return ERROR_ABORT;
}
// Is there a new record?
if (currentPosition == wh1080Work.lastRecord)
{
// No, wait till it is finished.
(*(work->medium.usbhidExit))(&work->medium);
return ERROR_ABORT;
}
// Read last record that is now complete:
if (readBlock(work, wh1080Work.lastRecord, &wh1080Work.recordBlock[0]) == ERROR)
{
radMsgLog (PRI_HIGH, "WH1080: read data block at index %d failed!",
wh1080Work.lastRecord);
(*(work->medium.usbhidExit))(&work->medium);
return ERROR;
}
(*(work->medium.usbhidExit))(&work->medium);
readPosition = wh1080Work.lastRecord;
wh1080Work.lastRecord = currentPosition;
//radMsgLogData(wh1080Work.recordBlock, 32);
// Is the record valid? Check for unpopulated record or no sensor data
// received status bit:
if ((wh1080Work.recordBlock[WH1080_STATUS] & 0x40) != 0)
{
// No!
radMsgLog (PRI_HIGH,
"WH1080: data block at index %d has bad status, ignoring the record",
readPosition);
return ERROR_ABORT;
}
// Parse the data received:
for (index = 0; index < WH1080_NUM_SENSORS; index ++)
{
if (decodeSensor(&wh1080Work.recordBlock[decodeVals[index].pos],
decodeVals[index].ws_type,
decodeVals[index].scale,
decodeVals[index].var)
!= OK)
{
// Bad sensor data, abort this cycle:
radMsgLog (PRI_HIGH,
"WH1080: data block at index %d has bad sensor value, ignoring the record",
readPosition);
return ERROR_ABORT;
}
}
// Convert to Imperial units:
wh1080Work.sensorData.intemp = wvutilsConvertCToF(wh1080Work.sensorData.intemp);
wh1080Work.sensorData.outtemp = wvutilsConvertCToF(wh1080Work.sensorData.outtemp);
wh1080Work.sensorData.pressure = wvutilsConvertHPAToINHG(wh1080Work.sensorData.pressure);
wh1080Work.sensorData.windAvgSpeed = wvutilsConvertMPSToMPH(wh1080Work.sensorData.windAvgSpeed);
wh1080Work.sensorData.windGustSpeed = wvutilsConvertMPSToMPH(wh1080Work.sensorData.windGustSpeed);
wh1080Work.sensorData.rain = wvutilsConvertMMToIN(wh1080Work.sensorData.rain);
return OK;
}
int wh1080Init (WVIEWD_WORK *work)
{
WH1080_IF_DATA* ifWorkData = (WH1080_IF_DATA*)work->stationData;
fd_set rfds;
struct timeval tv;
int ret;
time_t nowTime = time(NULL) - (WV_SECONDS_IN_HOUR/(60/WH1080_RAIN_RATE_PERIOD));
ARCHIVE_PKT recordStore;
unsigned char controlBlock[WH1080_BUFFER_CHUNK];
memset (&wh1080Work, 0, sizeof(wh1080Work));
// Create the rain accumulator (WH1080_RAIN_RATE_PERIOD minute age)
// so we can compute rain rate:
ifWorkData->rainRateAccumulator = sensorAccumInit(WH1080_RAIN_RATE_PERIOD);
// Populate the accumulator with the last WH1080_RAIN_RATE_PERIOD minutes:
while ((nowTime = dbsqliteArchiveGetNextRecord(nowTime, &recordStore)) != ERROR)
{
sensorAccumAddSample(ifWorkData->rainRateAccumulator,
recordStore.dateTime,
recordStore.value[DATA_INDEX_rain]);
}
if ((*(work->medium.usbhidInit))(&work->medium) != OK)
{
return ERROR;
}
// Set the station to log data once per minute:
while ((!work->exiting) && (readFixedBlock(work, controlBlock) != OK))
{
radMsgLog (PRI_HIGH, "WH1080: Initial fixed block read failed");
(*(work->medium.usbhidExit))(&work->medium);
radUtilsSleep(5000);
(*(work->medium.usbhidInit))(&work->medium);
radMsgLog (PRI_HIGH, "WH1080: Retrying initial fixed block read");
}
// For some reason the WH1080 wants the IF closed between a read and a write:
(*(work->medium.usbhidExit))(&work->medium);
if (work->exiting)
{
return ERROR;
}
controlBlock[WH1080_SAMPLING_INTERVAL] = 1;
(*(work->medium.usbhidInit))(&work->medium);
if (writeFixedBlock(work, controlBlock) == ERROR)
{
(*(work->medium.usbhidExit))(&work->medium);
return ERROR;
}
radUtilsSleep(2000);
(*(work->medium.usbhidExit))(&work->medium);
radUtilsSleep(1000);
wh1080Work.lastRecord = -1;
// populate the LOOP structure:
radMsgLog (PRI_HIGH, "Waiting for the next weather record to be ready "
"in the console to populate initial wview sensor readings "
"(this could take some time);");
radMsgLog (PRI_HIGH, "While waiting be sure you are receiving all sensors on the console;");
radMsgLog (PRI_HIGH, "if not, you may need to relocate the sensors or the console.");
while ((!work->exiting) && (readStationData(work) != OK))
{
radUtilsSleep(1000);
}
if (work->exiting)
{
return ERROR;
}
ifWorkData->wh1080Readings = wh1080Work.sensorData;
storeLoopPkt (work, &work->loopPkt, &ifWorkData->wh1080Readings);
// we must indicate successful completion here -
// even though we are synchronous, the daemon wants to see this event:
radProcessEventsSend (NULL, STATION_INIT_COMPLETE_EVENT, 0);
return OK;
}
// Returns:
// OK - if new record retrieved
// ERROR - if there was an interface error
// ERROR_ABORT - if there is no new record (WH1080 generates new records at
// best once a minute)
static int readStationData (WVIEWD_WORK *work)
{
WH1080_IF_DATA* ifWorkData = (WH1080_IF_DATA*)work->stationData;
int currentPosition, index;
if ((*(work->medium.usbhidInit))(&work->medium) != OK)
{
return ERROR;
}
// Read the WH1080 fixed block:
if (readFixedBlock(work, &wh1080Work.controlBlock[0]) == ERROR)
{
(*(work->medium.usbhidExit))(&work->medium);
return ERROR;
}
// Get the current record position; the WH1080 reports the record it is
// building, thus if it changes we need the prior just finished record:
currentPosition = (int)getUSHORT(&wh1080Work.controlBlock[WH1080_CURRENT_POS]);
currentPosition -= WH1080_BUFFER_RECORD;
if (currentPosition < WH1080_BUFFER_START)
{
// wrap back around to the end of the memory block:
currentPosition = WH1080_BUFFER_END;
}
// Is there a new record?
if (currentPosition == wh1080Work.lastRecord)
{
// No!
(*(work->medium.usbhidExit))(&work->medium);
return ERROR_ABORT;
}
// Read current and next record on first read on even position
if (readBlock(work, currentPosition, &wh1080Work.recordBlock[0]) == ERROR)
{
radMsgLog (PRI_HIGH, "WH1080: read data block at index %d failed!",
currentPosition);
(*(work->medium.usbhidExit))(&work->medium);
return ERROR;
}
(*(work->medium.usbhidExit))(&work->medium);
wh1080Work.lastRecord = currentPosition;
//radMsgLogData(wh1080Work.recordBlock, 32);
// Is the record valid? Check for unpopulated record or no sensor data
// received status bit:
if (((wh1080Work.recordBlock[0] != 1)) ||
((wh1080Work.recordBlock[WH1080_STATUS] & 0x40) != 0))
{
// No!
return ERROR_ABORT;
}
// Parse the data received:
for (index = 0; index < WH1080_NUM_SENSORS; index ++)
{
if (decodeSensor(&wh1080Work.recordBlock[decodeVals[index].pos],
decodeVals[index].ws_type,
decodeVals[index].scale,
decodeVals[index].var)
!= OK)
{
// Bad sensor data, abort this cycle:
return ERROR_ABORT;
}
}
// Convert to Imperial units:
wh1080Work.sensorData.intemp = wvutilsConvertCToF(wh1080Work.sensorData.intemp);
wh1080Work.sensorData.outtemp = wvutilsConvertCToF(wh1080Work.sensorData.outtemp);
wh1080Work.sensorData.pressure = wvutilsConvertHPAToINHG(wh1080Work.sensorData.pressure);
wh1080Work.sensorData.windAvgSpeed = wvutilsConvertMPSToMPH(wh1080Work.sensorData.windAvgSpeed);
wh1080Work.sensorData.windGustSpeed = wvutilsConvertMPSToMPH(wh1080Work.sensorData.windGustSpeed);
wh1080Work.sensorData.rain = wvutilsConvertMMToIN(wh1080Work.sensorData.rain);
return OK;
}
