In SX Microcontrollers, SX/B Compiler and SX-Key Tool, mumcs01 wrote:

I've been building a Nixie Alarm clock for the last 2 years. I'm almost done after 6 PCB rev's, a child, and significant frustration and fun.

 

Most of the parts are old Soviet parts... Except for the SX that is the heart of it. Everything works. Except for one stupid thing. Would someone please look at my code snippet below. There is something dumb here that I'm overlooking that has had me stuck for a month (in the 15 minutes here and there I've had)

 

[code]

 

DEVICE SX28, OSCHS2,TURBO,STACKX,OPTIONX
IRC_CAL IRC_FAST
FREQ 50_000_000

o_statusled  Pin  RB.0 OUTPUT  ' Status o_statusled On Circuit Board 
i_sw_alarm  Pin RB.1 INPUT CMOS  ' Used to toggle monitoring of the alarm time. Used to turn the alarm on and off. 
o_nixierelay  Pin RB.2 OUTPUT  ' 12V Relay Power to Supply Nixie Tubes Power
o_colontriac  Pin RB.3 OUTPUT  ' 120V TRIAC Driver for neom seperator indicator colons
o_alarmtriac  Pin RB.4 OUTPUT  ' 120V TRIAC Driver for neon alarm on indicator
o_nixrck  Pin RB.5 OUTPUT   ' Nixie Data Driver Line. rck Pin (Latch Pin)
o_nixsck  Pin RB.6 OUTPUT   ' Nixie Data Driver Line. sck Pin (Clock Pin)
o_nixser  Pin RB.7 OUTPUT   ' Nixie Data Driver Line. ser Pin (Data Pin)

Stack 8

' Constants
RtcId   CON  $DE     ' I2c address of the RTC Chip
Ack   CON  0    ' I2c Ack bit 
Nak   CON  1    ' I2c Nak bit
True  CON  1    ' True
False  CON 0    ' False

' Variables
alarm_enabled   VAR Bit    'Tells if the Alarm is on or off

Program Setup_Time

' Run once to Setup the clock on power up and determine the battery condition.
Setup_Time:
'Begin Standard bootup sequence
 LOW rb      ' Setup everything low
 pause 250

goto Mainloop     ' Proceed to main clock operation

Mainloop:
 if i_sw_alarm = true then
  Toggle alarm_enabled
  do
   pause 100
  loop while i_sw_alarm = true
 endif
 o_alarmtriac = alarm_enabled
goto Mainloop

 

[/code]

 

So here is my delema. In 'Mainloop', i_sw_alarm is a button. When pressed it toggles alarm_enabled variable, its then followed by a wait to avoid bouncing. If the alarm_enabled variable is true, it assigns o_alarmtriac to true... Which is a triac type device that drives ON an neon indicator. So basiclly, this doesn't work. I never can turn on this neon when the button is pressed. However, in a test program, the following WILL work. 

 

[code]

Setup_Time:
if i_sw_alarm = True then
  high o_alarmtriac
else
 low o_alarmtriac
endif
goto Setup_Time

[/code]

 

If I replace mainloop with the above, if I press the i_sw_alarm, the o_alarm triac comes on.... Which confirms that the hardware is working. 

 

Can anyone see something I'm missing. I'm just stumped at the moment. 

 

Thanks,

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