add better typing to I2C code, add I2C test routine in response.c

3 files changed, 13 insertions, 5 deletions

diff --git a/i2c.c b/i2c.c
index 02e5812..fc9d48a 100644
--- a/i2c.c
+++ b/i2c.c
@@ -4,12 +4,13 @@
 #include <sys/ioctl.h>
 #include <linux/i2c.h>
 #include <linux/i2c-dev.h>
+#include <glib.h>
 
 
 #define I2C_BUS "/dev/i2c-3"
 
 
-int I2C_Write(int address, int value) {
+int I2C_Write(gulong address, guchar value) {
 
 	struct i2c_smbus_ioctl_data argswrite;
 
@@ -29,7 +30,7 @@ int I2C_Write(int address, int value) {
 }
 
 
-int I2C_Read(int address) {
+guchar I2C_Read(gulong address) {
 
 	union i2c_smbus_data data;
         struct i2c_smbus_ioctl_data argsread;
diff --git a/i2c.h b/i2c.h
index 5382c4e..6c0e5b9 100644
--- a/i2c.h
+++ b/i2c.h
@@ -1,2 +1,4 @@
-int I2C_Write(int address, int value);
-int I2C_Read(int address);
+#include <glib.h>
+
+int I2C_Write(gulong address, guchar value);
+guchar I2C_Read(gulong address);
diff --git a/response.c b/response.c
index efb96b7..e80222c 100644
--- a/response.c
+++ b/response.c
@@ -1,7 +1,9 @@
 #include "response.h"
 #include "socket-common.h"
+#include "i2c.h"
 #include <string.h>
 #include <stdlib.h>
+#include <glib.h>
 
 //RESPONSE related functions from the server
 
@@ -104,9 +106,12 @@ void responseCb(gpointer instance, GObject *arg1, gpointer user_data)
 	// remove leading and trailing whitespace
 	g_strstrip (str);
 
+	I2C_Write (0x3b, 0xff);
+	guchar status = I2C_Read (0x3b);
+
 	// dummy response function
         gchar* upper = g_ascii_strup(str, len);
-	gchar *out_string = g_strdup_printf("%s\n%s\n%s\n",upper,upper,upper);
+	gchar *out_string = g_strdup_printf("%s\n%s\n%s\n%d\n",upper,upper,upper,status);
 	gssize out_len = strlen (out_string);
 
         //send response back to client