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.
48 строки
726 Б
Go
48 строки
726 Б
Go
// +build sam,atsamd21,circuitplay_express
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package machine
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import (
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"device/sam"
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"runtime/interrupt"
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)
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// UART1 on the Circuit Playground Express.
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var (
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UART1 = UART{
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Buffer: NewRingBuffer(),
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Bus: sam.SERCOM4_USART,
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SERCOM: 4,
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}
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)
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func init() {
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UART1.Interrupt = interrupt.New(sam.IRQ_SERCOM4, UART1.handleInterrupt)
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}
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// I2C on the Circuit Playground Express.
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var (
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// external device
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I2C0 = I2C{
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Bus: sam.SERCOM5_I2CM,
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SERCOM: 5,
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}
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// internal device
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I2C1 = I2C{
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Bus: sam.SERCOM1_I2CM,
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SERCOM: 1,
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}
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)
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// SPI on the Circuit Playground Express.
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var (
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SPI0 = SPI{
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Bus: sam.SERCOM3_SPI,
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SERCOM: 3,
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}
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)
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// I2S on the Circuit Playground Express.
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var (
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I2S0 = I2S{Bus: sam.I2S}
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)
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