X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fdrv%2Flm75.c;h=5d24e0ae520224b348727e016982d0d1b7a2e64d;hb=ec1f9b136d8b9ec44272ba7ab8ddc4b729589af2;hp=2828f3e18f3573dfd29f554803b620c3be7d98b5;hpb=f79b926a15f4920e7287c5dddf895f334d822e73;p=bertos.git

diff --git a/bertos/drv/lm75.c b/bertos/drv/lm75.c
index 2828f3e1..5d24e0ae 100644
--- a/bertos/drv/lm75.c
+++ b/bertos/drv/lm75.c
@@ -43,6 +43,7 @@
 #include "cfg/cfg_lm75.h"
 
 #include <cfg/debug.h>
+#include <cfg/module.h>
 
 // Define logging setting (for cfg/log.h module).
 #define LOG_LEVEL   LM75_LOG_LEVEL
@@ -51,19 +52,30 @@
 #include <cfg/log.h>
 
 #include <drv/i2c.h>
+#include <drv/ntc.h> // Macro and data type to manage celsius degree
 
 #define SELECT_ADDRESS(addr)   LM75_ADDRESS_BYTE | (addr << 1)
 
-deci_celsius_t lm75_read(addr_t sens_addr)
+deg_t lm75_read(uint8_t sens_addr)
 {
 	uint8_t data[2];
 	int16_t degree;
 	int16_t deci_degree;
 
-	i2c_start_w(SELECT_ADDRESS(sens_addr));
-	i2c_put(LM75_PAD_BYTE);
-	i2c_start_r(SELECT_ADDRESS(sens_addr));
-	i2c_recv(data, sizeof(data));
+	if( !(i2c_start_w(SELECT_ADDRESS(sens_addr))
+		&& i2c_put(LM75_PAD_BYTE)
+		&& i2c_start_r(SELECT_ADDRESS(sens_addr))) )
+	{
+		i2c_stop();
+		return EOF;
+	}
+
+	if ( !i2c_recv(data, sizeof(data)) )
+	{
+		i2c_stop();
+		return EOF;
+	}
+	i2c_stop();
 
 	degree = (int16_t)data[0];
 	deci_degree = (int16_t)(((data[1] >> 7) & 1 ) * 5);