forked from Apple-2-HW/Apple2-IO-RPi
73 lines
1.5 KiB
Go
73 lines
1.5 KiB
Go
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package main
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import (
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"time"
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"periph.io/x/periph/conn/gpio"
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"periph.io/x/periph/conn/gpio/gpioreg"
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"periph.io/x/periph/host"
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"fmt"
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)
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func main() {
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host.Init()
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startTime := time.Now()
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out_write := gpioreg.ByName("GPIO5")
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out_read := gpioreg.ByName("GPIO11")
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out_command1 := gpioreg.ByName("GPIO9")
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out_command2 := gpioreg.ByName("GPIO10")
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out_bit3 := gpioreg.ByName("GPIO22")
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out_bit2 := gpioreg.ByName("GPIO27")
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out_bit1 := gpioreg.ByName("GPIO17")
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out_bit0 := gpioreg.ByName("GPIO4")
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in_read := gpioreg.ByName("GPIO16")
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out_command1.Out(gpio.Low)
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out_command2.Out(gpio.Low)
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out_read.Out(gpio.High)
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out_write.Out(gpio.High)
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for i := 0; i < 4096; i++ {
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bit3 := gpio.Low
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bit2 := gpio.Low
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bit1 := gpio.Low
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bit0 := gpio.Low
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if ((i & 8) >> 3) == 1 {
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bit3 = gpio.High
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}
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out_bit3.Out(bit3)
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if ((i & 4) >> 2) == 1 {
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bit2 = gpio.High
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}
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out_bit2.Out(bit2)
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if ((i & 2) >> 1) == 1 {
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bit1 = gpio.High
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}
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out_bit1.Out(bit1)
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if (i & 1) == 1 {
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bit0 = gpio.High
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}
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out_bit0.Out(bit0)
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out_write.Out(gpio.Low)
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for in_read.Read() == gpio.Low {
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in_read.WaitForEdge(-1)
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}
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out_write.Out(gpio.High)
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for in_read.Read() == gpio.High {
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in_read.WaitForEdge(-1)
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}
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}
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elapsedTime := time.Since(startTime)
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fmt.Printf("Sent 2 KiB in %s", elapsedTime)
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}
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