From e6d0ea4225393d4bc6e2a8fdca7c8b0994c841e5 Mon Sep 17 00:00:00 2001
From: Ben Delarre <ben@delarre.net>
Date: Tue, 13 Jan 2015 13:55:11 -0800
Subject: [PATCH] gpio: added pinmap accessor for introspection usage

---
 gpio.go       | 3 +++
 gpiodriver.go | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/gpio.go b/gpio.go
index 17badd2..d86122a 100644
--- a/gpio.go
+++ b/gpio.go
@@ -125,6 +125,9 @@ type PWMPin interface {
 
 // GPIODriver implements a generic GPIO driver.
 type GPIODriver interface {
+	// Returns the pinmap for this GPIODriver
+	PinMap() PinMap
+
 	// Unregister unregisters the pin from the driver. Should be called when the pin is closed.
 	Unregister(string) error
 
diff --git a/gpiodriver.go b/gpiodriver.go
index 07fceff..be2f8d8 100644
--- a/gpiodriver.go
+++ b/gpiodriver.go
@@ -107,6 +107,10 @@ func (io *gpioDriver) PWMPin(key interface{}) (PWMPin, error) {
 	return p, nil
 }
 
+func (io *gpioDriver) PinMap() PinMap {
+	return io.pinMap
+}
+
 func (io *gpioDriver) Close() error {
 	for _, p := range io.initializedPins {
 		if err := p.Close(); err != nil {