fix SPI3w baud

soypat · soypat · commit 06bcd7c58cb1 · 2023-11-10T18:01:27.000-03:00
diff --git a/rp2-pio/piolib/spi3w.go b/rp2-pio/piolib/spi3w.go
@@ -25,6 +25,7 @@ type SPI3w struct {
 }
 
 func NewSPI3w(sm pio.StateMachine, dio, clk machine.Pin, baud uint32) (*SPI3w, error) {
+	baud *= 2 // We have 2 instructions per bit in the hot loop.
 	whole, frac, err := pio.ClkDivFromFrequency(baud, machine.CPUFrequency())
 	if err != nil {
 		return nil, err // Early return on bad clock.

Original file line number	Diff line number	Diff line change
`@@ -25,6 +25,7 @@ type SPI3w struct {`
`25`	`25`	`}`
`26`	`26`
`27`	`27`	`func NewSPI3w(sm pio.StateMachine, dio, clk machine.Pin, baud uint32) (*SPI3w, error) {`
	`28`	`+ baud *= 2 // We have 2 instructions per bit in the hot loop.`
`28`	`29`	`whole, frac, err := pio.ClkDivFromFrequency(baud, machine.CPUFrequency())`
`29`	`30`	`if err != nil {`
`30`	`31`	`return nil, err // Early return on bad clock.`