Weird Behavior
edgellmh
Posts: 85
Things have been going well and I have been writing more and more complex programs until suddenly the behavior of the components on the PDB board no longer seemed to follow my code. I assumed my SX had been burnt out and purchased a new one but I am still getting weird behavior. I removed the SXkey software and loaded a new one along with the new SX/B. I still get weird behavior. If I use the code below the LED on the PDB hooked to RB.0 comes on for a while and then goes off for 2 seconds and then repeats. That is the LED does not do its 4 short blinks. If I replace the HIGH, LOW commands with one TOGGLE command then the LED behavior is as I expect it; two blinks, 2 second pause and then repeats.
Something must be broken but what?
marshall
DEVICE SX28, OSC4MHZ, TURBO, STACKX, OPTIONX
FREQ 4_000_000
ID "LED"
'
' IO Pins
'
LED_PIN PIN RB.0 OUTPUT
'
' Constants
'
'
' Variables
'
j VAR Byte
'
' INTERRUPT
'
ISR_Start:
ISR_Exit:
' RETURNINT ' {cycles}
' =========================================================================
PROGRAM Start
' =========================================================================
'
' Program Code
'
Start:
Main:
FOR j = 1 to 4
'DO
HIGH LED_PIN
PAUSE 500
low LED_PIN
NEXT
'LOOP
PAUSE 2000
GOTO Main
Something must be broken but what?
marshall
DEVICE SX28, OSC4MHZ, TURBO, STACKX, OPTIONX
FREQ 4_000_000
ID "LED"
'
' IO Pins
'
LED_PIN PIN RB.0 OUTPUT
'
' Constants
'
'
' Variables
'
j VAR Byte
'
' INTERRUPT
'
ISR_Start:
ISR_Exit:
' RETURNINT ' {cycles}
' =========================================================================
PROGRAM Start
' =========================================================================
'
' Program Code
'
Start:
Main:
FOR j = 1 to 4
'DO
HIGH LED_PIN
PAUSE 500
low LED_PIN
NEXT
'LOOP
PAUSE 2000
GOTO Main
Comments
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Bad spellers of the world untie!
How about trouble shooting the code below.
FOR j = 1 to 4
'DO
LED_PIN = 1
PAUSE 500
LED_PIN = 0
PAUSE 500
NEXT
If I use HIGH or LOW for either one of the lines the code behaves as I expect it. But when I use the code above the LED never lights up.
marshall
It works for me in either case.
HIGH LED_PIN·and Low LED_PIN
or·
LED_PIN = 1 and LED_PIN = 0
I'm using SX-Key v3.2.3
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Bad spellers of the world untie!