ds1307 clock w/ jm_ds1307_demo.spin

stargazer2050 · 2013-11-06 08:25

Ds1307 board from sparkfun
Quickstart board
Need fullduplexserial.spin
Jm_ds1307_demo.spin
5v, 4.7k pullups to 3.3v

Clock is running.
Took the apostraphe off of setclock at startup.
Clock sets, how to set todays time into it?
"copy block at pntr".....? Cant make out what that means.

So i guess i just need to know how to use this spin file better

Chris Savage · 2013-11-06 08:41

I am unclear about what you're trying to do, but if you're trying to use FullDuplexSerial.spin to communicate with the DS1307 that won't work. The DS1307 is an I2C device and requires an I2C object. I am not familiar with Jm_ds1307_demo and you didn't attach any code or link any objects you're using so there's no way to be sure.

stargazer2050 · 2013-11-06 09:20

Hi,

Clock is working, the demo uses, full duplex and a i2c driver.
Just need instruction on file usage to set the clock.

Ive tried a bunch of other software but each either doesnt work the clock, or the use vga, lcd, or mirror duplex.
Or sda and clk are set on 28 and 29 which are somewhere else on quickstart header.

stargazer2050 · 2013-11-06 09:50

pub set_time(sc, mn, hr) '' Set seconds, minutes, and hours registers sc := 0 #> hr <# 59 mn := 0 #> hr <# 59 hr := 0 #> hr <# 23 i2c.putpage(DS1307, RTC_SECS, 3, @sc)

Need code pasting instructions

Need file attachment instruction

Duane Degn · 2013-11-06 10:24

It would be a lot easier to offer help if we had a link to the object in question.

As you know, I'm not averse to helping out or even testing software on my own setup.

But I am too lazy to search for an object myself.

stargazer2050 · 2013-11-06 10:30

I know and ive got the files but cant seem to do it all on this android. Workin on it

Duane Degn · 2013-11-06 10:40

Darn, I'm not as lazy as I thought.

Here's a link. It looks like it was attached to some forum post.

I have a link to a tutorial by Phil on how to post code in post #3 of my index.

Darn my lack of laziness. Here's the link.

attachment.php?attachmentid=78421&d=1297987572

stargazer2050 · 2013-11-06 10:42

pub settime(sc, mn, hr)
'' Set seconds, minutes, and hours registers
  sc := 0 #> hr <# 59
  mn := 0 #> hr <# 59  
  hr := 0 #> hr <# 23
  i2c.putpage(DS1307, RTC_SECS, 3, @sc)

pub setdate(dy, dt, mo, yr)
  dy := 1 #> dy <# 7
  dt := 1 #> dt <# 31
  mo := 1 #> mo <# 12
  yr := yr // 100
  i2c.putpage(DS1307, RTC_DAY, 4, @dy)
  
pub setclock(pntr)
'' Copy block at pntr to DS1307
  i2c.putpage(DS1307, RTC_SECS, 8, pntr)

Chris Savage · 2013-11-06 10:44

Attachment Instructions
Code Pasting Instructions

Duane Degn · 2013-11-06 11:26

The parameters being sent to the RTC or being read from the RTC are stored in the eight byte array "clock".

The main method used "getclock" to read the values from the RTC and store them in the "clock" array with this command.

getclock(@clock)

It keeps doing this until the seconds value has changed.

until (clock[RTC_SECS] <> last)

Since "RTC_SECS" has been set to zero in the constant section, it's save to assume "clock[0]" holds the seconds.

Once the seconds value no longer matches its previous value the program displays the new time.

The "@" symbol is used to indicate a memory address rather then the value stored at that address. Passing an address is way of passing (or receiving) multiple parameters at once.

bee_man · 2013-11-06 21:46

stargazer2050 wrote: »

Took the apostraphe off of setclock at startup.
Clock sets, how to set todays time into it?

Do you just want to set the RTC?

You need to put your current time and date data after Preset

dat

PreSet          byte    $45, $59, $23, $03, $31, $12, $10, 0

PreSet byte seconds, minutes, hours, day of week, day, month, year, 0

Then put the apostrophe back in front of the setclock call so you won't keep loading the old data each time it runs.

ds1307 clock w/ jm_ds1307_demo.spin

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