0003-I2CSlave.read-buf-count-returns-the-number-of-bytes-.patch

From f253ffd9e7717ff049cb678364b4ccf36d9d5245 Mon Sep 17 00:00:00 2001
From: Martino Facchin <m.facchin@arduino.cc>
Date: Wed, 1 Apr 2020 12:21:59 +0200
Subject: [PATCH 003/204] I2CSlave.read(buf, count) returns the number of bytes
 actually read

---
 drivers/include/drivers/I2CSlave.h | 2 +-
 drivers/source/I2CSlave.cpp        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/include/drivers/I2CSlave.h b/drivers/include/drivers/I2CSlave.h
index 663b326870..96cbddfd93 100644
--- a/drivers/include/drivers/I2CSlave.h
+++ b/drivers/include/drivers/I2CSlave.h
@@ -172,7 +172,7 @@ public:
      *
      *  @return Result of the operation.
      *  @retval 0       If the number of bytes read is equal to length requested.
-     *  @retval nonzero On error or if the number of bytes read is less than requested.
+     *  @retval the number of bytes read.
      */
     int read(char *data, int length);
 
diff --git a/drivers/source/I2CSlave.cpp b/drivers/source/I2CSlave.cpp
index 4317df9656..e4515820ad 100644
--- a/drivers/source/I2CSlave.cpp
+++ b/drivers/source/I2CSlave.cpp
@@ -52,7 +52,7 @@ int I2CSlave::receive(void)
 
 int I2CSlave::read(char *data, int length)
 {
-    return i2c_slave_read(&_i2c, data, length) != length;
+    return i2c_slave_read(&_i2c, data, length);
 }
 
 int I2CSlave::read(void)
-- 
2.39.1