From 9d108ee58f080bc5fb76a9e6b386a9f3f66b3746 Mon Sep 17 00:00:00 2001
From: Ben Delarre <ben@delarre.net>
Date: Tue, 13 Jan 2015 13:43:23 -0800
Subject: [PATCH] Added SPIBus.Write to allow writing without transfer delays.

---
 host/generic/spibus.go | 8 ++++++++
 spi.go                 | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/host/generic/spibus.go b/host/generic/spibus.go
index e00150c..284db35 100644
--- a/host/generic/spibus.go
+++ b/host/generic/spibus.go
@@ -233,6 +233,14 @@ func (b *spiBus) ReceiveByte() (byte, error) {
 	return byte(d[0]), nil
 }
 
+func (b *spiBus) Write(data []uint8) (error) {
+        if err := b.init(); err != nil {
+                return err
+        }
+        _, err := b.file.Write(data)
+        return err
+}
+
 func (b *spiBus) Close() error {
 	b.mu.Lock()
 	defer b.mu.Unlock()
diff --git a/spi.go b/spi.go
index e6aecb0..02a0ee8 100644
--- a/spi.go
+++ b/spi.go
@@ -33,6 +33,9 @@ type SPIBus interface {
 	// ReceiveByte receives a byte data.
 	ReceiveByte() (byte, error)
 
+	// WriteByte writes a buffer of data
+        Write([]uint8) (error)
+
 	// Close releases the resources associated with the bus.
 	Close() error
 }