From 7c6e90299de97b51f6ba17d1a50cedb824d0c82f Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Sat, 5 May 2018 18:35:39 +0200
Subject: Add gpio::is_set() to read from _latch register, update command
 parsing

---
 hal/pin.hpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'hal/pin.hpp')

diff --git a/hal/pin.hpp b/hal/pin.hpp
index bbb80dc..ab9d3ad 100644
--- a/hal/pin.hpp
+++ b/hal/pin.hpp
@@ -17,12 +17,19 @@ class gpio
 public:
     virtual ~gpio() {}
 
-    // digital functions
+    // digital mode methods
     virtual void set_mode(unsigned m) = 0;
+
+    // digital output methods
     virtual void set(unsigned s) = 0;
-    virtual unsigned read() const = 0; 
+    virtual unsigned is_set() const = 0;
     virtual void toggle() = 0;
 
+    // digital input methods
+    virtual unsigned read() const = 0; 
+
+    // TODO: analog mode methods
+
 protected:
     gpio() {}
 };
@@ -47,6 +54,7 @@ public:
     void set_mode(mode m);
 
     unsigned read() const;
+    unsigned is_set() const;
 
     void set(unsigned s);
     void set(state s);
-- 
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