I thought it would be easier having the ON time in seconds since midnight so
I can compare direct to RTC.
The length of time the output is ON needs to be able to vary between 1
minutes to 12 hrs. I know I could hard code the ON / OFF time into the
stack however whilst I still have user variables I may as well use them.
-----Original Message-----
From: Pascal Baerten [mailto:pascal.baer...@gmail.com]
Sent: Saturday, March 27, 2010 6:59 PM
To: OWFS (One-wire file system) discussion and help
Subject: Re: [Owfs-developers] BAE0910 AE Timed output code
Hi Rob,
Sorry, I was busy to unexpeted work during this week and worked very late
everyday.
You have to use the firmware I sent earlier.
I would create a main process that evaluate start conditions and initate sub
process that handle the action until duration.
some comments in your code below.
I will write you a sample skeleton later today.
Pascal
2010/3/27 Rob Conway <rjcon...@bigpond.com>
Hi,
I was hoping to get some feedback on the AE engine and creating some simple
output timers based upon energizing outputs based on time of day. I can
already set the RTC from the HOST and it resets at midnight, so the RTC
represents seconds since midnight.
This is what I am trying to achieve on the stack
IF RTC > ON_TIME and RTC <(ON-TIME+DURATION)
then DUTY1,0
else DUTY1,10001
This is some rough code I thought I could use however not tested, I wanted
to know if I was on the correct track and if the stack can handle maths
results that go negative.
yes,
for Byte, values above 127 are considered negative
for Word, values above 32767 are considered negative
for Long, values above 2147483647 are considered negative
// ON / OFF TIMES (Seconds)
// L_UserN ON time for Relay1 Seconds since Midnight
// W_UserL Duration for PIO Duration for relay ON time, seconds
what's the max duration? ,maybe fit in 255 range or 65535 to use B or W
instead variable.
relay1_ctl:
CMP.L L_RTC,L_USERL
BLE relay1_off
PUSH.L L_RTC //Get time since midnight
PUSH.L L_USERN // get user ON time in seconds since midnight
SUB // Find out how many seconds difference
between RTC and on time
CMP.W @-1, W_USERL // See if difference is less than Duration, if so
the output should be ON
as operands are L_ types, use CMP.L, also, @-4 needed for the L_ type who
require 4 bytes
important to retore stack pointer to inital value after stack operation AIX
-4
BGR relay_off
BLE relay_on
END
relay1_on
SET.W W_DUTY1,0
BRA Relay2_ctl
Relay1_off
SET.W W_DUTY1,10001
BRA Relay2_ctl
relay2_ctl:
~ code similar to relay 1
----------------------------------------------------------------------------
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Pascal
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