Post by thread:[SX] SX/B interrupt disable

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

I have attached a program that can be used as a starting point. My question, after reading through the SX/B help file I did not notice a command or an instruction that disables the interrupt after an option = $xx has been implemented. So, for example, in my program, how would I disable the interrupt while the pulsin subroutine runs, and then how would I turn the interrupt back on. thanks Ray ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=150091 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2006 (http://www.dotNetBB.com)

In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:Ray, If you using OPTION=$88 to enable interrupts then OPTION=$C8 will disable interrupts. Bean.

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In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Sparks-R-Fun wrote:Ray, Do you have Gunther's book? As others can testify, it is a very handy reference. On page 225 of the second edition he makes clear that bit 6 of the Option register is the "main switch" to turn interrupts on or off. (0 = Enabled, 1 = Disabled) For your code, this is the Option bit that you need to change. To turn interrupts on use: OPTION = %10001000 To turn interrupts off use: OPTION = %11001000 Those are the same as the hex values given by Bean. I wanted to explain a little how they were obtained. Obviously the other bits in the Option register have meaning as well, so be sure to check those out if they are of interest.

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