i2c: fix write API to use const char*

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

diff --git a/api/i2c.h b/api/i2c.h
index dbf3e6e..ae05b53 100644 (file)
--- a/api/i2c.h
+++ b/api/i2c.h
@@ -77,7 +77,7 @@ maa_result_t maa_i2c_frequency(maa_i2c_context dev, int hz);
  *
  *  @return maa_result_t the maa result.
  */
-maa_result_t maa_i2c_read(maa_i2c_context dev, const char *data, int length);
+maa_result_t maa_i2c_read(maa_i2c_context dev, char *data, int length);
 
 /** Read a single byte from the i2c context
  *
@@ -95,7 +95,7 @@ int maa_i2c_read_byte(maa_i2c_context dev);
  *
  *  @return maa_result_t the maa result.
  */
-maa_result_t maa_i2c_write(maa_i2c_context dev, char *data, int length);
+maa_result_t maa_i2c_write(maa_i2c_context dev, const char *data, int length);
 
 /** Write a single byte to an i2c context
  *
@@ -104,7 +104,7 @@ maa_result_t maa_i2c_write(maa_i2c_context dev, char *data, int length);
  *
  *  @return maa_result_t the maa result.
  */
-maa_result_t maa_i2c_write_byte(maa_i2c_context dev, int data);
+maa_result_t maa_i2c_write_byte(maa_i2c_context dev, const int data);
 
 /** Sets the i2c context address.
  *

diff --git a/api/i2c.hpp b/api/i2c.hpp
index f683446..7da3ac0 100644 (file)
--- a/api/i2c.hpp
+++ b/api/i2c.hpp
@@ -54,13 +54,13 @@ class I2c {
         int read_byte() {
             return maa_i2c_read_byte(m_i2c);
         }
-        maa_result_t read(const char *data, int length) {
+        maa_result_t read(char *data, int length) {
             return maa_i2c_read(m_i2c, data, length);
         }
-        maa_result_t write(char *data, int length) {
+        maa_result_t write(const char *data, int length) {
             return maa_i2c_write(m_i2c, data, length);
         }
-        maa_result_t write_byte(int data) {
+        maa_result_t write_byte(const int data) {
             return maa_i2c_write_byte(m_i2c, data);
         }
     private:

diff --git a/src/i2c/i2c.c b/src/i2c/i2c.c
index 39a8f5f..496ede9 100644 (file)
--- a/src/i2c/i2c.c
+++ b/src/i2c/i2c.c
@@ -78,7 +78,7 @@ maa_i2c_frequency(maa_i2c_context dev, int hz)
 }
 
 maa_result_t
-maa_i2c_read(maa_i2c_context dev, const char *data, int length)
+maa_i2c_read(maa_i2c_context dev, char *data, int length)
 {
     // this is the read(3) syscall not maa_i2c_read()
     if (read(dev->fh, data, length) == length) {
@@ -99,7 +99,7 @@ maa_i2c_read_byte(maa_i2c_context dev)
 }
 
 maa_result_t
-maa_i2c_write(maa_i2c_context dev, char* data, int length)
+maa_i2c_write(maa_i2c_context dev, const char* data, int length)
 {
     if (i2c_smbus_write_i2c_block_data(dev->fh, data[0], length-1, (uint8_t*) data+1) < 0) {
         fprintf(stderr, "Failed to write to i2c\n");
@@ -109,7 +109,7 @@ maa_i2c_write(maa_i2c_context dev, char* data, int length)
 }
 
 maa_result_t
-maa_i2c_write_byte(maa_i2c_context dev, int data)
+maa_i2c_write_byte(maa_i2c_context dev, const int data)
 {
     if (i2c_smbus_write_byte(dev->fh, data) < 0) {
         fprintf(stderr, "Failed to write to i2c\n");