Diff: PCF8574.cpp

Revision:

1:26bfcb9024a0

Parent:

0:3129c02edb0f

Child:

2:5cbf7e01ee23

diff -r 3129c02edb0f -r 26bfcb9024a0 PCF8574.cpp
--- a/PCF8574.cpp	Wed Oct 11 14:36:26 2017 +0000
+++ b/PCF8574.cpp	Wed Oct 11 14:43:38 2017 +0000
@@ -0,0 +1,102 @@
+/**
+ * @brief       PCF8574.h
+ * @details     Remote 8-bit I/O expander for I2C-bus with interrupt.
+ *              Functions file.
+ *
+ *
+ * @return      NA
+ *
+ * @author      Manuel Caballero
+ * @date        11/October/2017
+ * @version     11/October/2017    The ORIGIN
+ * @pre         NaN.
+ * @warning     NaN
+ * @pre         This code belongs to AqueronteBlog ( http://unbarquero.blogspot.com ).
+ */
+
+#include "PCF8574.h"
+
+
+PCF8574::PCF8574 ( PinName sda, PinName scl, uint32_t addr, uint32_t freq )
+    : i2c          ( sda, scl )
+    , PCF8574_Addr  ( addr )
+{
+    i2c.frequency( freq );
+}
+
+
+PCF8574::~PCF8574()
+{
+}
+
+
+
+/**
+ * @brief       PCF8574_SetPins ( PCF8574_vector_data_t )
+ *
+ * @details     It configures/sets the pins of the device.
+ *
+ * @param[in]    myConfDATA:        Data to set up the device.
+ *
+ * @param[out]   NaN.
+ *
+ *
+ * @return       Status of PCF8574_SetPins.
+ *
+ *
+ * @author      Manuel Caballero
+ * @date        11/October/2017
+ * @version     11/October/2017   The ORIGIN
+ * @pre         NaN
+ * @warning     NaN.
+ */
+PCF8574::PCF8574_status_t  PCF8574::PCF8574_SetPins ( PCF8574_vector_data_t  myConfDATA )
+{
+    uint32_t    aux                 =    0;
+
+
+    aux = i2c.write ( PCF8574_Addr, &myConfDATA.data, 1 );
+
+
+
+    if ( aux == I2C_SUCCESS )
+       return   PCF8574_SUCCESS;
+    else
+       return   PCF8574_FAILURE;
+}
+
+
+
+/**
+ * @brief       PCF8574_ReadPins ( PCF8574_vector_data_t*  )
+ *
+ * @details     It gets the data from the device ( port status ).
+ *
+ * @param[in]    NaN.
+ *
+ * @param[out]   myReadDATA:        ADC result into the chosen channel.
+ *
+ *
+ * @return       Status of PCF8574_ReadPins.
+ *
+ *
+ * @author      Manuel Caballero
+ * @date        11/October/2017
+ * @version     11/October/2017   The ORIGIN
+ * @pre         NaN
+ * @warning     NaN.
+ */
+PCF8574::PCF8574_status_t  PCF8574::PCF8574_ReadPins ( PCF8574_vector_data_t* myReadDATA )
+{
+    uint32_t    aux                 =    0;
+
+
+    aux = i2c.read ( PCF8574_Addr, &myReadDATA->data, 1 );
+
+
+
+    if ( aux == I2C_SUCCESS )
+       return   PCF8574_SUCCESS;
+    else
+       return   PCF8574_FAILURE;
+}