//go:build cortexm
// +build cortexm

package ws2812

// Warning: autogenerated file. Instead of modifying this file, change
// gen-ws2812-arm.go and run "go generate".

import (
	"device"
	"runtime/interrupt"
)

func (d Device) writeByte16(c byte) {
	portSet, maskSet := d.Pin.PortMaskSet()
	portClear, maskClear := d.Pin.PortMaskClear()

	// Timings:
	// T0H:  4 -  6 cycles or 250.0ns - 375.0ns
	// T1H:  9 - 11 cycles or 562.5ns - 687.5ns
	// TLD:  8 -    cycles or 500.0ns -
	mask := interrupt.Disable()
	value := uint32(c) << 24
	device.AsmFull(`
	1: @ send_bit
	  str   {maskSet}, {portSet}     @ [2]   T0H and T0L start here
	  lsls  {value}, #1              @ [1]
	  bcs.n 2f                       @ [1/3] skip_store
	  str   {maskClear}, {portClear} @ [2]   T0H -> T0L transition
	2: @ skip_store
	  nop
	  nop
	  nop
	  nop
	  nop
	  str   {maskClear}, {portClear} @ [2]   T1H -> T1L transition
	  nop
	  nop
	  nop
	  nop
	  subs  {i}, #1                  @ [1]
	  bne.n 1b                       @ [1/3] send_bit
	`, map[string]interface{}{
		"value":     value,
		"i":         8,
		"maskSet":   maskSet,
		"portSet":   portSet,
		"maskClear": maskClear,
		"portClear": portClear,
	})
	interrupt.Restore(mask)
}

func (d Device) writeByte48(c byte) {
	portSet, maskSet := d.Pin.PortMaskSet()
	portClear, maskClear := d.Pin.PortMaskClear()

	// Timings:
	// T0H: 10 - 12 cycles or 208.3ns - 250.0ns
	// T1H: 27 - 29 cycles or 562.5ns - 604.2ns
	// TLD: 22 -    cycles or 458.3ns -
	mask := interrupt.Disable()
	value := uint32(c) << 24
	device.AsmFull(`
	1: @ send_bit
	  str   {maskSet}, {portSet}     @ [2]   T0H and T0L start here
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  lsls  {value}, #1              @ [1]
	  bcs.n 2f                       @ [1/3] skip_store
	  str   {maskClear}, {portClear} @ [2]   T0H -> T0L transition
	2: @ skip_store
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  str   {maskClear}, {portClear} @ [2]   T1H -> T1L transition
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  subs  {i}, #1                  @ [1]
	  bne.n 1b                       @ [1/3] send_bit
	`, map[string]interface{}{
		"value":     value,
		"i":         8,
		"maskSet":   maskSet,
		"portSet":   portSet,
		"maskClear": maskClear,
		"portClear": portClear,
	})
	interrupt.Restore(mask)
}

func (d Device) writeByte64(c byte) {
	portSet, maskSet := d.Pin.PortMaskSet()
	portClear, maskClear := d.Pin.PortMaskClear()

	// Timings:
	// T0H: 13 - 15 cycles or 203.1ns - 234.4ns
	// T1H: 36 - 38 cycles or 562.5ns - 593.8ns
	// TLD: 29 -    cycles or 453.1ns -
	mask := interrupt.Disable()
	value := uint32(c) << 24
	device.AsmFull(`
	1: @ send_bit
	  str   {maskSet}, {portSet}     @ [2]   T0H and T0L start here
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  lsls  {value}, #1              @ [1]
	  bcs.n 2f                       @ [1/3] skip_store
	  str   {maskClear}, {portClear} @ [2]   T0H -> T0L transition
	2: @ skip_store
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  str   {maskClear}, {portClear} @ [2]   T1H -> T1L transition
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  subs  {i}, #1                  @ [1]
	  bne.n 1b                       @ [1/3] send_bit
	`, map[string]interface{}{
		"value":     value,
		"i":         8,
		"maskSet":   maskSet,
		"portSet":   portSet,
		"maskClear": maskClear,
		"portClear": portClear,
	})
	interrupt.Restore(mask)
}

func (d Device) writeByte120(c byte) {
	portSet, maskSet := d.Pin.PortMaskSet()
	portClear, maskClear := d.Pin.PortMaskClear()

	// Timings:
	// T0H: 24 - 26 cycles or 200.0ns - 216.7ns
	// T1H: 66 - 68 cycles or 550.0ns - 566.7ns
	// TLD: 54 -    cycles or 450.0ns -
	mask := interrupt.Disable()
	value := uint32(c) << 24
	device.AsmFull(`
	1: @ send_bit
	  str   {maskSet}, {portSet}     @ [2]   T0H and T0L start here
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  lsls  {value}, #1              @ [1]
	  bcs.n 2f                       @ [1/3] skip_store
	  str   {maskClear}, {portClear} @ [2]   T0H -> T0L transition
	2: @ skip_store
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  str   {maskClear}, {portClear} @ [2]   T1H -> T1L transition
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  nop
	  subs  {i}, #1                  @ [1]
	  bne.n 1b                       @ [1/3] send_bit
	`, map[string]interface{}{
		"value":     value,
		"i":         8,
		"maskSet":   maskSet,
		"portSet":   portSet,
		"maskClear": maskClear,
		"portClear": portClear,
	})
	interrupt.Restore(mask)
}