Admin at 10:28, 4 February 2014

2014-02-04T10:28:38Z

Admin at 19:07, 24 August 2013

2013-08-24T19:07:08Z

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Admin: Created page with "= Action = Enable specified interrupt. =
2013-02-09T14:16:45Z

Created page with "= Action = Enable specified interrupt. = <spa..."

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= Action =

Enable specified interrupt.

 

 

= Syntax =

ENABLE interrupt [, prio]

 

 

= Remarks =
<div style="padding: 0px; margin: 0px 0px 0px 4px;">
{| width="512" cellspacing="0" cellpadding="1" border="1" style="border: 2px solid rgb(0, 0, 0); border-spacing: 0px; border-collapse: collapse;"
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Interrupt

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Description

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INT0

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External Interrupt 0

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INT1

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External Interrupt 1

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OVF0,TIMER0, COUNTER0

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TIMER0 overflow interrupt

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OVF1,TIMER1,

 

COUNTER1

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TIMER1 overflow interrupt

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CAPTURE1, ICP1

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INPUT CAPTURE TIMER1 interrupt

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COMPARE1A,OC1A or

 

COMPARE1, OC1

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TIMER1 OUTPUT COMPARE A interrupt

 

In case of only one compare interrupt

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COMPARE1B,OC1B

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TIMER1 OUTPUT COMPARE B interrupt

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SPI

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SPI interrupt

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URXC

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Serial RX complete interrupt

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UDRE

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Serial data register empty interrupt

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UTXC

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Serial TX complete interrupt

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SERIAL

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Disables URXC, UDRE and UTXC

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ACI

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Analog comparator interrupt

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ADC

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A/D converter interrupt

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XMEGA ONLY

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prio

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The priority you want to assign to the interrupt.

Specify Lo, Hi or Med.

In the Xmega you must provide the priority of the interrupts. Lo=Low priority. Hi=High priority and Med=Medium priority.

If you do not specify a priority, MED will be used.

|}
</div>
 

By default all interrupts are disabled.

The global interrupts master switch is also disabled by default.

If you enable an interrupt, it will only fire if the master interrupt switch is enabled.

You enable this master switch with ENABLE INTERRUPTS.

You can disable it with DISABLE INTERRUPTS.

 

If an interrupt is executed, the global master switch will be disabled automatically by the hardware.

This is to prevent other interrupts to occur.

When the interrupt routine returns, the processor hardware will automatically enable the master switch so new interrupts may occur.

 

It depends on the processor how many and which interrupts it has. If you type ENABLE in the editor, you will get a pop up with a list of interrupts you can chose from.

 

= XMEGA =

In normal AVR chips the priority is determined by the interrupts address. The lower the address, the higher the priority.

In the DAT file you can find a list with interrupts and their address.

For example , taken from the m1280def.dat file "

 

 

[INTLIST]

count=56

INTname1=INT0,$002,EIMSK.INT0,EIFR.INTF0

INTname2=INT1,$004,EIMSK.INT1,EIFR.INTF1

INTname3=INT2,$006,EIMSK.INT2,EIFR.INTF2

INTname4=INT3,$008,EIMSK.INT3,EIFR.INTF3

INTname5=INT4,$00a,EIMSK.INT4,EIFR.INTF4

INTname6=INT5,$00c,EIMSK.INT5,EIFR.INTF5

 

INT0 has the highest priority since it has the lowest address (address 2)

 

The XMEGA has a priority system. You can specify if an interrupt as a low, medium or high priority.

But you MUST enable these priorities  with [[CONFIG_PRIORITY|CONFIG PRIORITY]]

If you use LO and MED priority, they have to be enabled.

 

 

= See also =

[[DISABLE]] , [[ON INTERRUPT|ON]] , [[CONFIG PRIORITY|CONFIG PRIORITY]]

 

 

= Partial Example =

 <source lang="bascomavr">
Enable Interrupts 'allow interrupts to be set
Enable Timer1 'enables the TIMER1 interrupt
</source> {{Languages}}

[[Category:BASCOM Language Reference]]

@@ Line 262: / Line 262: @@
 &nbsp;
-<span style="font-size: 8pt; font-family: Courier; font-weight: bold; color: rgb(0, 0, 128);">Config</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;</span><span style="font-size: 8pt; font-family: Courier; font-weight: bold; color: rgb(0, 0, 128);">Priority</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;</span><span style="font-size: 8pt; font-family: Courier; color: rgb(255, 0, 0);">=</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;Static&nbsp;</span><span style="font-size: 8pt; font-family: Courier; color: rgb(255, 0, 0);">,</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;Vector&nbsp;</span><span style="font-size: 8pt; font-family: Courier; color: rgb(255, 0, 0);">=</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;Application&nbsp;</span><span style="font-size: 8pt; font-family: Courier; color: rgb(255, 0, 0);">,</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;Lo&nbsp;</span><span style="font-size: 8pt; font-family: Courier; color: rgb(255, 0, 0);">=</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;Enabled&nbsp;</span><span style="font-size: 8pt; font-family: Courier; color: rgb(255, 0, 0);">,</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;Med&nbsp;</span><span style="font-size: 8pt; font-family: Courier; color: rgb(255, 0, 0);">=</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;Enabled&nbsp;</span><span style="font-size: 8pt; font-family: Courier; color: rgb(255, 0, 0);">,</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;Hi&nbsp;</span><span style="font-size: 8pt; font-family: Courier; color: rgb(255, 0, 0);">=</span><span style="font-size: 8pt; font-family: Courier;">&nbsp;Enabled</span>
+Please read the topic [[CONFIG_PRIORITY|CONFIG PRIORITY]] in order to understand which interrupt to enable.
 In the DAT file you can find a list with interrupts and their address.

ENABLE - Revision history

Admin at 10:28, 4 February 2014

Admin at 19:07, 24 August 2013