From: batt <batt@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Fri, 23 Jul 2010 19:40:05 +0000 (+0000)
Subject: Automatically decrement transfer size.
X-Git-Tag: 2.6.0~288^2~33
X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;h=75daa48c6fff4f866acc1a0076bd0d97a33f2875;p=bertos.git

Automatically decrement transfer size.

git-svn-id: https://src.develer.com/svnoss/bertos/branches/i2c@4061 38d2e660-2303-0410-9eaa-f027e97ec537
---

diff --git a/bertos/drv/i2c.h b/bertos/drv/i2c.h
index eea0073a..f527f359 100644
--- a/bertos/drv/i2c.h
+++ b/bertos/drv/i2c.h
@@ -214,12 +214,16 @@ INLINE uint8_t i2c_get(I2c *i2c)
 	ASSERT(i2c->vt);
 	ASSERT(i2c->vt->get);
 
-	ASSERT(i2c->xfer_size >=  1);
+	ASSERT(i2c->xfer_size);
 
 	ASSERT(I2C_TEST_START(i2c->flags) == I2C_START_R);
 
 	if (!i2c->errors)
-		return i2c->vt->get(i2c);
+	{
+		uint8_t data = i2c->vt->get(i2c);
+		i2c->xfer_size--;
+		return data;
+	}
 	else
 		return 0xFF;
 }
@@ -230,12 +234,15 @@ INLINE void i2c_put(I2c *i2c, uint8_t data)
 	ASSERT(i2c->vt);
 	ASSERT(i2c->vt->put);
 
-	ASSERT(i2c->xfer_size >=  1);
+	ASSERT(i2c->xfer_size);
 
 	ASSERT(I2C_TEST_START(i2c->flags) == I2C_START_W);
 
 	if (!i2c->errors)
+	{
 		i2c->vt->put(i2c, data);
+		i2c->xfer_size--;
+	}
 }
 
 INLINE void i2c_send(I2c *i2c, const void *_buf, size_t count)