INTERRUPT
 
Syntax

INTERRUPT expression
Description


INTERRUPT will disable interrupts if expression is 0.  And it will enable interrupts if expression is non-zero.  The default case is to have interrupts enabled.

Use this routine with caution, such as generating fixed time signals, or doing synchronous input.  Do NOT disable interrupts around large sections of the program.  Serial input will stop functioning and characters may be lost if interrupts are off for too long.

Example

' read a synchronous byte from a device with ready on pin 0, clock pin 1 and data on pin 2

FUNCTION ReadBit
  WHILE IN(1)=0 ' wait for clock to go high
  RETURN  IN(2) AND 1
END FUNCTION

...

WHILE IN(0) ' wait for ready signal
LOOP

INTERRUPT 0
BIT0 = ReadBit
BIT1 = ReadBit
BIT2 = ReadBit
BIT3 = ReadBit
BIT4 = ReadBit
BIT5 = ReadBit
BIT6 = ReadBit
BIT7 = ReadBit
INTERRUPT 1

VALUE = BIT0 + (BIT1<<1) + (BIT2<<2)+ (BIT3<<3)+ (BIT4<<4)+(BIT5<<5)+ (BIT6<<6)+ (BIT7<<7)
Differences from other BASICs

See also