Diff: ADC128D818.cpp

Revision:

1:5f9dbbbc34c5

Parent:

0:9cc68ef524da

--- a/ADC128D818.cpp	Tue Aug 27 11:38:38 2013 +0000
+++ b/ADC128D818.cpp	Mon Sep 02 11:39:46 2013 +0000
@@ -1,16 +1,60 @@
-
+/**
+ * @brief ADC128D818 12-Bit, 8-Channel, ADC System Monitor w/ Temp Sensor, Internal/External Reference, & I2C Interfac
+ * http://www.ti.com/product/adc128d818/
+ * @date 02/09/2013
+ * @author F.BLANC LAAS-CNRS
+ * http://homepages.laas.fr/fblanc/
+ */
+ 
 #include "ADC128D818.h"
 
-//Create instance
+/**
+ * @brief Constructor.
+ *
+ * @param sda I2C
+ * @param scl I2C
+ * @param adc_int
+ */
 ADC128D818::ADC128D818(PinName sda, PinName scl, PinName adc_int) : _i2c(sda, scl), _Adc_Int (adc_int)
 {
 }
 
-//destroy instance
+/**
+ * @brief Destructor.
+ */
 ADC128D818::~ADC128D818()
 {
 }
 
+/**
+ * @brief init
+ *
+ * @param address I2C (7bits)
+        ADC_ADDRESS_LOW_LOW
+        ADC_ADDRESS_LOW_MID
+        ADC_ADDRESS_LOW_HIGH
+        ADC_ADDRESS_MID_LOW
+        ADC_ADDRESS_MID_MID
+        ADC_ADDRESS_MID_HIGH
+        ADC_ADDRESS_HIGH_LOW
+        ADC_ADDRESS_HIGH_MID
+        ADC_ADDRESS_HIGH_HIGH
+ * @param mode :
+        ADC_MODE_0 
+        ADC_MODE_1 
+        ADC_MODE_2 
+        ADC_MODE_3
+ * @param vref
+        ADC_VREF_INT
+        ADC_VREF_EXT
+ * @param rate
+        ADC_RATE_LOW_POWER
+        ADC_RATE_CONTINUOUS
+ * @param mask_channel
+ * @param mask_int
+ * @return error 0 OK, -1 NO DEVICE, -2 ADC is BUSY
+ * @date 02/09/2013
+ */
 int ADC128D818::init(char address, char mode, char vref, char rate, char mask_channel, char mask_int)
 {
 
@@ -100,36 +144,57 @@
 return  0;
 }
 
-
-int ADC128D818::init_limit(char channel, int limit, char high_low)
+/**
+ * @brief init_limit
+ *
+ * @param limit
+ * @param high_low
+        ADC_LIMIT_HIGH
+        ADC_LIMIT_LOW
+ * @return error 0 OK
+ * @date 02/09/2013
+ */
+int ADC128D818::init_limit(char channel, char limit, char high_low)
 {
-    char cmd_data[3];
-    char *ptr;
-    cmd_data[0]=ADC_REG_Limit_Registers + channel + high_low;
-    ptr=(char *) & limit;
-    cmd_data[1]=*ptr;
-    cmd_data[2]=*++ptr;
+    char cmd_data[2];
+
+    cmd_data[0]=ADC_REG_Limit_Registers + channel * 2 + high_low;
 
-    _i2c.write(_address, cmd_data, 3); //send a byte & wait acknowledged
+    cmd_data[1]=limit;
+
+
+    _i2c.write(_address, cmd_data, 2); //send a byte & wait acknowledged
 
    return  0;
 }
-
+/**
+ * @brief read_channel
+ * @param channel
+ * @return u32_data
+ * @date 02/09/2013
+ */
 int ADC128D818::read_channel(char channel)
 {
-
+    int u32_data=0;
     char data[2];
-//    char *ptr;
+    char *ptr;
     char cmd[1] ;
     cmd[0] = ADC_REG_Channel_Readings_Registers + channel;
     _i2c.write(_address, cmd, 1); //send a byte & wait acknowledged
-    //ptr=(char *) & data;
+    
     _i2c.read(_address,data,2); //read a byte
-    
-   return  (int) data[0]*256+data[1];
+    ptr=(char *) & u32_data;
+    ptr[0]=data[1];
+    ptr[1]=data[0];
+   return  u32_data;
 }
 
-
+/**
+ * @brief read_register
+ * @param Register 
+ * @return u8_data
+ * @date 02/09/2013
+ */
 
 char ADC128D818::read_register(char Register)
 {
@@ -141,7 +206,10 @@
     
    return  cmd;
 }
-
+/**
+ * @brief start
+ * @date 02/09/2013
+ */
 void ADC128D818::start()
 {
     char cmd_data[2];
@@ -151,6 +219,10 @@
    _i2c.write(_address, cmd_data, 2); //send a 2 byte 
 
 }
+/**
+ * @brief stop
+ * @date 02/09/2013
+ */
 void ADC128D818::stop()
 {
     char cmd_data[2];