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relocate phy.MDIOBitBang tinygo example to Configure method

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This commit is contained in:
Patricio Whittingslow
2026-01-25 09:11:08 -03:00
parent 91fea9ae58
commit e83665f147
1 changed files with 10 additions and 9 deletions
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phy/mdio-bitbang.go
+10 -9
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@@ -19,7 +19,15 @@ const (
// MDIOBitBang provides a software defined(bitbang) MDIO/MDC management interface for PHY register access // MDIOBitBang provides a software defined(bitbang) MDIO/MDC management interface for PHY register access
// as the STA (Management station, this implementation) which communicates to the PHY (Physical layer device). // as the STA (Management station, this implementation) which communicates to the PHY (Physical layer device).
// Inspired by linux/v3.13.1/source/drivers/net/phy/mdio-bitbang.c // Inspired by linux/v3.13.1/source/drivers/net/phy/mdio-bitbang.c
type MDIOBitBang struct {
_sendBit func(bit bool)
_getBit func() (inputBit bool)
_setDir func(output bool)
}
// Configure initializes the MDIO bit-bang interface with the given pin control callbacks.
// Below is a TinyGo oriented HAL needed to use MDIOBitBang. MDC is clock line, MDIO is data line. // Below is a TinyGo oriented HAL needed to use MDIOBitBang. MDC is clock line, MDIO is data line.
// Example uses Z(high impedance) tristate level output encoding to avoid MAC/PHY simultaneous driving of data line.
// //
// const mdioDelay = 340 * time.Nanosecond // MDIO spec max turnaround time // const mdioDelay = 340 * time.Nanosecond // MDIO spec max turnaround time
// pinMDIO.Configure(machine.PinConfig{Mode: machine.PinInputPullup}) // pinMDIO.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
@@ -29,7 +37,7 @@ const (
// mdio2.Configure(func(outBit bool) { // mdio2.Configure(func(outBit bool) {
// // sendBit: set data, clock high, clock low // // sendBit: set data, clock high, clock low
// if outBit { // if outBit {
// pinMDIO.Configure(machine.PinConfig{Mode: machine.PinInputPullup}) // pinMDIO.Configure(machine.PinConfig{Mode: machine.PinInputPullup}) // Z high.
// } else { // } else {
// pinMDIO.Low() // pinMDIO.Low()
// pinMDIO.Configure(machine.PinConfig{Mode: machine.PinOutput}) // pinMDIO.Configure(machine.PinConfig{Mode: machine.PinOutput})
@@ -53,13 +61,6 @@ const (
// pinMDIO.Configure(machine.PinConfig{Mode: machine.PinInput}) // pinMDIO.Configure(machine.PinConfig{Mode: machine.PinInput})
// } // }
// }) // })
type MDIOBitBang struct {
_sendBit func(bit bool)
_getBit func() (inputBit bool)
_setDir func(output bool)
}
// Configure initializes the MDIO bit-bang interface with the given pin control callbacks.
func (m *MDIOBitBang) Configure(sendBit func(bit bool), getBit func() bool, setDir func(setOut bool)) { func (m *MDIOBitBang) Configure(sendBit func(bit bool), getBit func() bool, setDir func(setOut bool)) {
if sendBit == nil || getBit == nil || setDir == nil { if sendBit == nil || getBit == nil || setDir == nil {
panic("nil callback") panic("nil callback")
@@ -71,7 +72,7 @@ func (m *MDIOBitBang) Configure(sendBit func(bit bool), getBit func() bool, setD
} }
func (m *MDIOBitBang) reset() { func (m *MDIOBitBang) reset() {
// setting direction to output releases the bus. // setting direction to output releases the bus. Pin idle at high impedance state when using Z mode.
m.setDir(true) m.setDir(true)
} }