SunTracker_BLE

Dependencies:   BLE_API X_NUCLEO_6180XA1 X_NUCLEO_IDB0XA1 X_NUCLEO_IHM01A1 X_NUCLEO_IKS01A1 mbed

Fork of SunTracker_BLE by ST Expansion SW Team

Overview

The SunTracker is a demo application running on ST Nucleo-F401RE stacking a set of ST X-NUCLEO expansion boards.
Main features provided are:

  • A solar panel follows the light source, orienting the panel in order to achieve the best panel efficiency.
  • Orientation is controlled thanks to a couple of VL6180X FlightSense light sensors mounted on a X-NUCLEO-6180XA1 expansion board and driven by X-NUCLEO-IHM01A1 controlled stepper motor acting as actuator to orientate the panel.
  • The system features a progressive control on the stepper motor in order to modulate the panel rotation speed according to the light angle.
  • The application is also able to control the panel productivity reading the panel voltage through an ADC and proving feedback on the local display.
  • A manual orientation is possible by using the accelerometer on a X-NUCLEO-IKS01A1 expansion board that, according on board tilt, controls the speed and the rotate direction.
  • A remote control is available using a X-NUCLEO-IDB04A1 or a X-NUCLEO-IDB05A1 Bluetooth Low Energy expansion board. Remote control software is here.

/media/uploads/fabiombed/suntracker_server-client.png

Working Status

  • SunTracker has 3 working status visible on FlightSense display and switchable by pressing the User Button:

Status 0 (Idle)

  • Motor: Free Turning
  • Display: Waiting for User Button

Status 1

  • Motor: Driven by Light
  • Display: Direction and Light Intensity = Direction and Motor Speed

Status 2

  • Motor: Driven by Light
  • Display: Solar Panel Efficiency

Status 3

  • Motor: Driven by Accelerometer
  • Display: Direction and Accelerometer Intensity

Server Startup

  • When you plug the power supply, the word ‘PUSH’ is shown on display.
  • You can manually rotate the structure to assign the ‘Zero Point’. Then press the User Button to launch the application.
  • The display will show this status, which means that the structure is oriented to maximize the efficiency of the solar panel.
  • If there is a light displacement, the structure will rotate, left or right, to follow the light source and on display is shown the direction and the speed.
  • You can press the User Button to show the panel efficiency with 4 digits that represent the range from 0v (0000) to 3,3v (3300).
  • Further pressing the User Button you will manual rotate the panel by tilt the Server or Client accelerometer depending by BLE connection.

Client Startup

  • The Client application can remotely control the User Button and the Accelerometer functions.
  • Power on the Client AFTER the Server, it will automatically search for the SunTracker and will establish a BLE connection.
  • The Green Led on Nucleo Client board will be powered on.

Rotation Features

  • It has been implemented a block of rotation to avoid cables twist.
  • The blocking point can be set in the firmware by changing a constant.
  • You can manually rotate the structure to assign the ‘Zero Point’ before press the User Button to launch the application.
  • The system features a progressive control on the stepper motor in order to modulate the rotation speed according to the light or accelerometer angle.

List of Components

SERVER SunTracker_BLE

  • Stepper Motor 400’’ (Part Number 5350401) - To orientate the Mechanical Structure.
  • Solar Panel 0.446w (Part Number 0194127) - To capture sunlight and generate electrical current.
  • Power Supply 12v (Part Number 7262993) - To provide power supply at the Stepper Motor.
  • Flat Cable 6 ways (Part Number 1807010) - To plug VL6180X-SATEL with X-NUCLEO-6180XA1 (60cm length each x2).
  • Cable Connector (Part Number 6737694) - To plug the Flat Cable (x4).
  • Power Connector (Part Number 0487842) - To provide Power Supply to X-NUCLEO-IHM01A1.

CLIENT SunTracker_BLE_Remote

MECHANICAL STRUCTURE

Find here the STL files to print with a 3D printer.

/media/uploads/fabiombed/assembly.png

/media/uploads/fabiombed/mechanical_structure_and_motor_legs.png

FLAT CABLE ASSEMBLY

/media/uploads/fabiombed/flat_cable.png

HARDWARE SETUP

Nucleo ADC + Solar Panel

Connect Solar Panel cables to Nucleo Morpho PC_3 (white) and Nucleo Morpho GND (black). Connect a capacitor 10uF between PC_3 and GND to stabilize its voltage value shown on display.

EasySpin (L6474) + BLE

Hardware conflict between EasySpin DIR1 and BLE Reset, both on same Arduino Pin PA_8. Disconnect PA_8 between EasySpin and Nucleo by fold EasySpin Pin. PB_2 has been configured as EasySpin DIR1 in the firmware . Connect Nucleo Morpho PB_2 to FlightSense Arduino PA_8 by a wire.

FlightSense Satellites

In case of instability with I2C due to long flat cables, solder 4 SMD capacitors 47pF on FlightSense board in parallel between R15, R16, R17, R18 and plug 2 capacitors 15pF between FlightSense Arduino PB_8 and PB_9 to GND pin to cut-off noises over 720 KHz.

Arduino & Morpho Pinout

/media/uploads/fabiombed/arduino_pinout.png /media/uploads/fabiombed/morpho_pinout.png

Revision:
6:4cbf7303b496
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main_only_BLE.cpp.h	Mon Feb 08 11:12:07 2016 +0000
@@ -0,0 +1,215 @@
+/**
+ ******************************************************************************
+ * @file    main.cpp
+ * @author  Fabio Brembilla
+ * @version V2.0.0
+ * @date    January 22th, 2016
+ * @brief   SunTracker + RemoteControl Vertical Application
+ *          This application use IHM01A1, 6180XA1, IKS01A1, IDB0XA1 expansion boards
+ ******************************************************************************
+ * @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 ------------------------------------------------------------------*/
+
+/* mbed specific header files. */
+#include "mbed.h"
+
+/* Helper header files. */
+#include "DevSPI.h"
+#include "DevI2C.h"
+
+/* Component specific header files. */
+#include "l6474_class.h"
+#include "x_nucleo_6180xa1.h"
+#include "x_nucleo_iks01a1.h"
+
+/* C header files. */
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+
+/* BlueTooth -----------------------------------------------------------------*/
+
+#include "debug.h" // Need for PRINTF
+#include "Utils.h" // Need for STORE_LE_16 and _32
+
+typedef struct {
+    int32_t AXIS_X;
+    int32_t AXIS_Y;
+    int32_t AXIS_Z;
+} AxesRaw_TypeDef;
+
+typedef enum ConnectionStatus_t {
+    DISCONNECTED    =0,
+    CONNECTED       =1
+}cns_t;
+
+const unsigned   LENGTH_OF_LONG_UUID = 16;
+typedef uint16_t ShortUUIDBytes_t;
+typedef uint8_t  LongUUIDBytes_t[LENGTH_OF_LONG_UUID];
+
+#include "CustomControlService.h"
+#include "CustomSensorsService.h"
+
+static BLE * p_BLEdev = NULL;
+
+#define BLE_DEV_NAME "SunTrack"
+#define BLE_DEV_MAC 0xAA,0xBB,0xCC,0xDD,0xEE,0xFF
+#define BLE_ADVERTISING_INTERVAL 1000
+
+/* Definitions ---------------------------------------------------------------*/
+
+#define SET_ACC 400     // Set Motor Acceleration
+#define SET_DEC 400     // Set Motor Deceleration
+#define SET_MAX 200     // Set Motor MaxSpeed
+#define SET_MIN 100     // Set Motor MinSpeed
+#define STOP 1000       // Set Motor Stop Position
+#define TOLLERANCE 100  // Tollerance between Left and Right before Start Movement
+#define RANGE_1 200     // Range 1 for Motor Speed
+#define RANGE_2 500     // Range 2 for Motor Speed
+
+/* Variables -----------------------------------------------------------------*/
+
+int16_t dir=0;          // Motor Rotation Direction: 0 = Stop, 1 = Anticlockwise, 2 = Clockwise
+int16_t changedir=0;    // Change Direction: 0 = No, 1 = Yes
+int16_t babybear=0;     // Difference (in Lux) between Left and Right
+int acc_data[3];        // Difference of Accelerometer
+int16_t diff=0;         // Abs of Babybear or Accelerometer difference
+int16_t left=0;         // Left Command for Rotate Direction
+int16_t right=0;        // Right Command for Rotate Direction
+int16_t start=0;        // Waiting User Button Push
+int32_t pos=0;          // Motor Position
+char DisplayStr[5];     // Status Display
+int16_t Display=0;      // Shown on Display: 0 = Motor Speed, 1 = Solar Panel Value, 2 = Manual Control
+int16_t status, status_t, status_b, status_l, status_r; // Babybear Status
+
+/* ---------------------------------------------------------------------------*/
+
+
+
+/* Bluetooth CallBack ---------------------------------------------------------*/
+
+static void onUpdatesEnabledCallback(GattAttribute::Handle_t handle)
+{
+    
+}
+
+static void onUpdatesDisabledCallback(Gap::Handle_t handle)
+{
+    
+}
+
+static void onDataReadCallback(const GattReadCallbackParams *eventDataP)
+{
+    
+}
+
+static void myonDataWriteCallback(const GattWriteCallbackParams *eventDataP)
+{
+    
+}
+
+static void onConnectionCallback(const Gap::ConnectionCallbackParams_t * connectionParams)
+{
+    
+}
+
+static void onDisconnectionCallback(const Gap::DisconnectionCallbackParams_t * disConnectionReason)
+{
+    
+}
+
+/* Bluetooth Initialization ---------------------------------------------------*/
+
+void BLE_Initialization(void)
+{
+
+    p_BLEdev = new BLE;
+    if (!p_BLEdev) { printf("\r\nBLE Device creation failed\r\n"); }
+  
+    const Gap::Address_t BLE_address_BE = {BLE_DEV_MAC};        
+    p_BLEdev->gap().setAddress(BLEProtocol::AddressType::PUBLIC, BLE_address_BE);
+printf("Line: %d \r\n", __LINE__);       
+    p_BLEdev->init();         
+printf("Line: %d \r\n", __LINE__);    
+
+    // Set BLE CallBack Functions
+    p_BLEdev->gattServer().onUpdatesEnabled(onUpdatesEnabledCallback);
+    p_BLEdev->gattServer().onUpdatesDisabled(onUpdatesDisabledCallback);
+    p_BLEdev->gattServer().onDataRead(onDataReadCallback);
+    p_BLEdev->gattServer().onDataWritten(myonDataWriteCallback);
+    p_BLEdev->gap().onConnection(onConnectionCallback);
+    p_BLEdev->gap().onDisconnection(onDisconnectionCallback);
+    //p_BLEdev->gattServer().onConfirmationReceived(onConfirmationReceivedCallback);    
+    //p_BLEdev->gattServer().onDataSent(onDataSentCallback);    
+    //p_BLEdev->gap().onTimeout(onTimeoutCallback);
+
+}
+
+/* Main ----------------------------------------------------------------------*/
+
+int main()
+{
+
+    //Initialization();
+printf("Line: %d \r\n", __LINE__);  
+    BLE_Initialization();
+printf("Line: %d \r\n", __LINE__);  
+    
+    /* Setup advertising. */
+    const static char     DEVICE_NAME[] = BLE_DEV_NAME;
+    p_BLEdev->gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+    #ifdef USE_SENSOR_FUSION_LIB        
+    uint8_t dat[]= {0x01,0x80,0x00,0xFC,0x01,0x80};
+    #else
+    uint8_t dat[]= {0x01,0x80,0x00,0xFC,0x00,0x00};
+    #endif      
+    p_BLEdev->gap().accumulateScanResponse(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA,dat,6);    
+    p_BLEdev->gap().accumulateAdvertisingPayload(GapAdvertisingData::UNKNOWN);
+    p_BLEdev->gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
+    p_BLEdev->gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+    p_BLEdev->gap().setAdvertisingInterval(BLE_ADVERTISING_INTERVAL);
+    p_BLEdev->gap().startAdvertising();
+
+    /* Printing to the console. */
+    printf("SunTracker by Fabio Brembilla\r\n\n");
+    
+    /* Main Loop. */
+    while(true) {
+        
+       
+        
+        
+        p_BLEdev->waitForEvent();
+    }
+
+
+}