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Revert "Added support for 125MHz to WS2812 for RP2040"

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This reverts commit b4eb406a43 (erroneous
push).
This commit is contained in:
BCG
2022-02-14 01:06:23 -05:00
parent b4eb406a43
commit 0ced12683c
3 changed files with 1 additions and 303 deletions
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ws2812/ws2812-asm_cortexm.go
-299
View File
@@ -652,305 +652,6 @@ func (d Device) writeByte120(c byte) {
interrupt.Restore(mask)
}
func (d Device) writeByte125(c byte) {
portSet, maskSet := d.Pin.PortMaskSet()
portClear, maskClear := d.Pin.PortMaskClear()
// Timings:
// T0H: 44 - 46 cycles or 352.0ns - 368.0ns
// T1H: 132 - 134 cycles or 1056.0ns - 1072.0ns
// TLD: 144 - cycles or 1152.0ns -
mask := interrupt.Disable()
value := uint32(c) << 24
device.AsmFull(`
1: @ send_bit
str {maskSet}, {portSet} @ [2] T0H and T0L start here
nop
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lsls {value}, #1 @ [1]
bcs.n 2f @ [1/3] skip_store
str {maskClear}, {portClear} @ [2] T0H -> T0L transition
2: @ skip_store
nop
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str {maskClear}, {portClear} @ [2] T1H -> T1L transition
nop
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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) writeByte168(c byte) {
portSet, maskSet := d.Pin.PortMaskSet()
portClear, maskClear := d.Pin.PortMaskClear()