Time clock

sidecar-racer

I know this is a simple task but after spending a day batting my head, I thought I'd ask the experts .
I have a loop running at 100ms rep rate for telemetry logging.
In the loop I have 4 byte varibles, hours, minutes, seconds, and tenths of seconds.
These varibles increment correctly and will display on CRT
I want to create a string in HH:MM:SS.S format from these varibles to insert in SD-FAT file record (Excel CSV format)

Any thoughts??
Rick Murray

Duane Degn

There's an AppNote on how to use a SD card.

EDIT: I just looked through this code again. This is a really old example. I'll try to find a newer (better) example tomorrow. This code is very akward.

Here are parts of an old program that does this. I don't think the SD card methods in this example are named the same as they are in the newest FAT driver. I think the clock driver is an old one too.

The AddDecToString method is probably the most useful method (of those in the code below) to help you with what you want to do.

OBJ
  Tv : "tv_terminal"                                    ' Uses two cogs
  Sd : "FATEngine.spin"                                 ' Uses one cog
  Clock : "RTCEngine.spin"                              ' no added cog, uses I2C lines
  

PUB RecordData | indexPrivate2, localIndex
      
        ' write other data
        Sd.writeCharacter(44) ' a coma seperates fields
        Sd.writeCharacters(@timeArray + 5) ' I don't want to write the first five characters in the array
        Sd.writeCharacter(13)
        Sd.writeCharacter(10) ' New line (new row in Excel)
        

 PRI SendTime
  days := Clock.getday
  years := Clock.getyear
   months := Clock.getmonth
  date := Clock.getdate         '(_i2cSCL, _Address)
  hours := Clock.gethours
  minutes := Clock.getminutes
  seconds := Clock.getseconds
  AddDecToString(years, 0)
  AddDecToString(months, 1)
  AddDecToString(date, 2)
  AddDecToString(hours, 3)
  AddDecToString(minutes, 4)
  AddDecToString(seconds, 5)
   
PRI AddDecToString(value, position) | indexPrivate
  if position == 0
    byte[@TimeArray][position * 3 + 5] := value / 1000 + "0"
    value //= 1000
    byte[@TimeArray][position * 3 + 6] := value / 100 + "0"
    value //= 100
  byte[@TimeArray][position * 3 + 7] := value / 10 + "0"
  value //= 10
  byte[@TimeArray][position * 3 + 8] := value + "0"

Duane

sidecar-racer

Thanks, Duane.
Your info put me on the right track. Progress continues
Rick