X_NUCLEO_IPS02A1 24V Intelligent Power Switch (IPS) Nucleo Expansion Board Firmware Package

Introduction

This firmware package includes Components Device Drivers and Board Support Package for STMicroelectronics X-NUCLEO-IPS02A1 IPS Expansion Board.

Firmware Library

Class X_NUCLEO_IPS02A1 is intended to represent the Intelligent Power Switch expansion board with the same name.

The expansion board is basically featuring by one IP:

vps2535h vertical power switch.

It is intentionally implemented as a singleton because only one X-NUCLEO-IPS02A1 at a time might be deployed in a HW component stack. In order to get the singleton instance you have to call class method `Instance()`, e.g.:

// IPS expansion board singleton instance
static X_NUCLEO_IPS02A1 *ips_expansion_board = X_NUCLEO_IPS02A1::Instance();

How to use the firmware package

The basic operations to deal with the firmware pkg and use the IPS are the following :

1) instantiate the X_NUCLEO by calling class method `Instance()`:

// Sensors expansion board singleton instance
static X_NUCLEO_IPS02A1 *sensors_expansion_board = X_NUCLEO_IPS02A1::Instance();

2) Switch-on or Switch-off loads output (Channel 1 or Channel 2) by setting or clearing associated digital input :

            ips_expansion_board.vps2535h.Fr_Stby = 1; // set Fr_Stby pin
            ips_expansion_board.vps2535h.In_1 = 1; // switch-on Channel 1
            ips_expansion_board.vps2535h.In_2 = 0; // switch-off Channle 2

3) Read Current circulating on Channel 1 or Channel 2 and print on the Terminal

            Multisense_Signal= ips_expansion_board.GetCurrent(CHANNEL_1);
            printf("Current Ch1 = %2.3fA \n\r", Multisense_Signal);
            Multisense_Signal= ips_expansion_board.GetCurrent(CHANNEL_2);
            printf("Current Ch2 = %2.3fA \n\r", Multisense_Signal);

Diff: Components/VPS2535H/VPS2535H.cpp

Revision:: 7:10e489682b80
Parent:: 6:c313d3a5c61a
Child:: 8:73df2d2b721c

diff -r c313d3a5c61a -r 10e489682b80 Components/VPS2535H/VPS2535H.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Components/VPS2535H/VPS2535H.cpp	Tue May 09 09:37:03 2017 +0000
@@ -0,0 +1,154 @@
+/**
+ ******************************************************************************
+ * @file    VPS2535H.cpp
+ * @author  ADG
+ * @version V1.0.1
+ * @date    01-July-2016
+ * @brief   implementatio for VPS2535H driver class
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright notice,
+ *      this list of conditions and the following disclaimer in the documentation
+ *      and/or other materials provided with the distribution.
+ *   3. Neither the name of STMicroelectronics nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+*/ 
+
+
+/* Includes ------------------------------------------------------------------*/
+#include "VPS2535H.h"
+
+
+/* Methods -------------------------------------------------------------------*/
+
+/**
+ * @brief  Set VPS2535H Initialization
+ * @param  VPS2535H handel structure
+ * @retval IPS_SUCCESS
+ */
+int VPS2535H::init(void *init_struct) {
+    VPS2535H_init();
+    return IPS_SUCCESS; 
+}
+
+/**
+ * @brief  Close VPS2535H
+ * @param  none
+ * @retval IPS_SUCCESS
+ */
+int VPS2535H::close(void) {
+    VPS2535H_close();
+    return IPS_SUCCESS; 
+}
+
+/* Module Interface */
+/**
+  * @brief  Initializes the VPS2535H device
+  * @param  none
+  * @retval VPS2535H status
+  */
+IPS_StatusTypeDef VPS2535H::VPS2535H_init() {
+    Fr_Stby = 1;
+    return IPS_SUCCESS;
+}
+
+/**
+  * @brief  Close (Deinitialize) the VPS2535H device and used peripheral.
+  * @param  None
+  * @retval VPS2535H status
+  */
+IPS_StatusTypeDef VPS2535H::VPS2535H_close(){
+    Fr_Stby = 1;
+    return IPS_SUCCESS;
+}
+
+/**
+  * @brief  GetSense function gets the value of the Sense power switch output pin 
+  * (for either Ch1 or Ch2) upon IO conversion. It just reads from sense pin
+  * @param  hips: pointer to a VPS2535H_HandleTypeDef structure that contains
+  *                the configuration information for the specified VPS2535H module.
+  *                Value got from V-sense output is stored in hips->SenseValue
+  *                field. Status of the operation is stored in hips->Status and 
+  *                hips->Status fields
+  * @retval IPS_StatusTypeDef status
+  */
+IPS_StatusTypeDef VPS2535H::VPS2535H_get_sense_channel_diagnostic(IPS_HandleTypeDef *hips){
+  hips->SenseRawValue = 0; //if channel is wrong Sense value is 0
+  hips->GNDSenseRawValue = 0; // VPS2535H doesn't require GND measurement compensation
+  hips-> Status =IPS_WRONG_CHANNEL;
+  hips->IO_Status = IPS_IO_FAIL;
+  if (hips ->ipsChannel == CHANNEL_1)
+     hips->SenseRawValue = CurrentSense1.read() * V_REF * ((R_D1+R_D2)/(R_D2));
+  if (hips ->ipsChannel == CHANNEL_2)
+     hips->SenseRawValue = CurrentSense2.read() * V_REF * ((R_D1+R_D2)/(R_D2));
+ 
+  hips->IO_Status = IPS_IO_SUCCESS;
+  hips->Status =IPS_SUCCESS;
+  return hips-> Status;
+}
+
+/**
+  * @brief  GetSecureCurrentSense  function gets the I-sense switch output pin
+  *         upon ADC conversion. 
+  * @param  hips: pointer to a IPS_HandleTypeDef structure that contains
+  *         the configuration information for the specified VPS2535H module.
+  *         Value got from V-sense output is stored in hips->SenseValue
+  *         field.
+  *         Status of the operation is stored in hips->Status fields   
+  * @retval IPS status
+  */
+IPS_StatusTypeDef VPS2535H::VPS2535H_get_secure_current_sense(IPS_HandleTypeDef *hips){
+  
+  if ((hips ->ipsChannel != CHANNEL_1) && (hips ->ipsChannel != CHANNEL_2)) {
+    hips->Status = IPS_WRONG_CHANNEL;
+    return IPS_WRONG_CHANNEL; 
+  }
+  
+  /* Get sense feedback */
+  if ((VPS2535H_get_sense_channel_diagnostic(hips) == IPS_SUCCESS) && (hips->Status == IPS_SUCCESS)) {
+    hips->IValue= K*hips->SenseRawValue/R_SENSE;
+    return IPS_SUCCESS;
+  }
+  else
+    return IPS_FAIL; // see hips->Status
+}
+
+/**
+  * @brief  GetCurrent  function gets the I-sense switch output pin
+  * @param  Ch: Channel number. Possible value are CHANNEL_1 or CHANNEL_2
+  * @retval Current Value
+  */
+float VPS2535H::get_current(int Ch) {
+ 
+  if (Ch == CHANNEL_1) {
+    return (K*CurrentSense1.read()* ((R_D1+R_D2)/(R_D2)) * V_REF/R_SENSE);
+  }
+  if (Ch == CHANNEL_2) {
+    return (K*CurrentSense2.read()* ((R_D1+R_D2)/(R_D2)) * V_REF/R_SENSE);
+  }
+  return 0;
+}
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/