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machine: support Pin.Get() function when the pin is configured as output

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To my surprise, this is supported on all the devices I could test so
therefore it makes sense to change the API to allow this.
This commit is contained in:
Ayke van Laethem
2021-10-20 17:19:43 +02:00
committed by Ron Evans
parent c8719f8d14
commit 15d3f5f609
9 changed files with 17 additions and 10 deletions
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src/machine/machine_nrf.go
+3 -2
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@@ -17,7 +17,7 @@ const (
PinInput PinMode = (nrf.GPIO_PIN_CNF_DIR_Input << nrf.GPIO_PIN_CNF_DIR_Pos) | (nrf.GPIO_PIN_CNF_INPUT_Connect << nrf.GPIO_PIN_CNF_INPUT_Pos)
PinInputPullup PinMode = PinInput | (nrf.GPIO_PIN_CNF_PULL_Pullup << nrf.GPIO_PIN_CNF_PULL_Pos)
PinInputPulldown PinMode = PinInput | (nrf.GPIO_PIN_CNF_PULL_Pulldown << nrf.GPIO_PIN_CNF_PULL_Pos)
PinOutput PinMode = (nrf.GPIO_PIN_CNF_DIR_Output << nrf.GPIO_PIN_CNF_DIR_Pos) | (nrf.GPIO_PIN_CNF_INPUT_Disconnect << nrf.GPIO_PIN_CNF_INPUT_Pos)
PinOutput PinMode = (nrf.GPIO_PIN_CNF_DIR_Output << nrf.GPIO_PIN_CNF_DIR_Pos) | (nrf.GPIO_PIN_CNF_INPUT_Connect << nrf.GPIO_PIN_CNF_INPUT_Pos)
)
type PinChange uint8
@@ -64,7 +64,8 @@ func (p Pin) PortMaskClear() (*uint32, uint32) {
return &port.OUTCLR.Reg, 1 << pin
}
// Get returns the current value of a GPIO pin.
// Get returns the current value of a GPIO pin when the pin is configured as an
// input or as an output.
func (p Pin) Get() bool {
port, pin := p.getPortPin()
return (port.IN.Get()>>pin)&1 != 0