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https://github.com/tinygo-org/tinygo.git
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Ayke van Laethem
a5ed993f8d
This commit lets the compiler know about interrupts and allows optimizations to be performed based on that: interrupts are eliminated when they appear to be unused in a program. This is done with a new pseudo-call (runtime/interrupt.New) that is treated specially by the compiler.
24 lines
659 B
Go
24 lines
659 B
Go
// +build cortexm
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package interrupt
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import (
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"device/arm"
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)
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// Enable enables this interrupt. Right after calling this function, the
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// interrupt may be invoked if it was already pending.
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func (irq Interrupt) Enable() {
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arm.EnableIRQ(uint32(irq.num))
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}
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// SetPriority sets the interrupt priority for this interrupt. A lower number
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// means a higher priority. Additionally, most hardware doesn't implement all
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// priority bits (only the uppoer bits).
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//
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// Examples: 0xff (lowest priority), 0xc0 (low priority), 0x00 (highest possible
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// priority).
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func (irq Interrupt) SetPriority(priority uint8) {
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arm.SetPriority(uint32(irq.num), uint32(priority))
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}
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