machine/rp2040: add PWM implementation

soypat · soypat · commit cc64642c99fd · 2021-08-17T13:03:13.000-03:00
add documentation

rp2040 pwm fixes and functionality added

machine/rp2040: add PWM implementation
diff --git a/src/examples/pwm/pico.go b/src/examples/pwm/pico.go
@@ -0,0 +1,11 @@
+// +build pico
+
+package main
+
+import "machine"
+
+var (
+	pwm  = machine.PWM4 // Pin 25 (LED on pico) corresponds to PWM4.
+	pinA = machine.LED
+	pinB = machine.GPIO24
+)
diff --git a/src/machine/machine_rp2040_gpio.go b/src/machine/machine_rp2040_gpio.go
@@ -68,6 +68,7 @@ const (
 	PinInputPullup
 	PinAnalog
 	PinUART
+	PinPWM
 )
 
 // set drives the pin high
@@ -155,6 +156,8 @@ func (p Pin) Configure(config PinConfig) {
 		p.pulloff()
 	case PinUART:
 		p.setFunc(fnUART)
+	case PinPWM:
+		p.setFunc(fnPWM)
 	}
 }
 
diff --git a/src/machine/machine_rp2040_pwm.go b/src/machine/machine_rp2040_pwm.go

Original file line number	Diff line number	Diff line change
`@@ -68,6 +68,7 @@ const (`
`68`	`68`	`PinInputPullup`
`69`	`69`	`PinAnalog`
`70`	`70`	`PinUART`
	`71`	`+ PinPWM`
`71`	`72`	`)`
`72`	`73`
`73`	`74`	`// set drives the pin high`
`@@ -155,6 +156,8 @@ func (p Pin) Configure(config PinConfig) {`
`155`	`156`	`p.pulloff()`
`156`	`157`	`case PinUART:`
`157`	`158`	`p.setFunc(fnUART)`
	`159`	`+ case PinPWM:`
	`160`	`+ p.setFunc(fnPWM)`
`158`	`161`	`}`
`159`	`162`	`}`
`160`	`163`