sx126x: refactor to RadioController interface to more easily handle non-STM32WL boards and remove duplicated code

Signed-off-by: deadprogram <ron@hybridgroup.com>

sx126x/radiocontrol_wl55jc.go

@@ -0,0 +1,60 @@
+//go:build nucleowl55jc
+
+/*
+Nucleo WL55JC1
+RFSwitch
+
++-----------+---------+------------+------------+
+|           | FE_CTRL1 |  FE_CTRL2 |   FE_CTRL3 |
+|           |   (PC4)  |   (PC5)   |     (PC3)  |
++-----------+----------+-----------+------------+
+|  TX_HP    |   LOW    |   HIGH    |    HIGH    |
+|  TX_LP    |   HIGH   |   HIGH    |    HIGH    |
+|  RX       |   HIGH   |   LOW     |    HIGH    |
++-----------+----------+-----------+------------+
+*/
+package sx126x
+
+import (
+	"machine"
+)
+
+// RadioControl for Nucleo WL55JC1 board.
+type RadioControl struct {
+	STM32RadioControl
+}
+
+func NewRadioControl() *RadioControl {
+	return &RadioControl{STM32RadioControl{}}
+}
+
+// Init pins needed for controlling rx/tx
+func (rc *RadioControl) Init() error {
+	machine.PC4.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.PC5.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.PC3.Configure(machine.PinConfig{Mode: machine.PinOutput})
+
+	return nil
+}
+
+func (rc *RadioControl) SetRfSwitchMode(mode int) error {
+	switch mode {
+
+	case RFSWITCH_TX_HP:
+		machine.PC4.Set(false)
+		machine.PC5.Set(true)
+		machine.PC3.Set(true)
+
+	case RFSWITCH_TX_LP:
+		machine.PC4.Set(true)
+		machine.PC5.Set(true)
+		machine.PC3.Set(true)
+
+	case RFSWITCH_RX:
+		machine.PC4.Set(true)
+		machine.PC5.Set(false)
+		machine.PC3.Set(true)
+	}
+
+	return nil
+}