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
Parent:
5:76fb6b783487
Child:
7:54984d031243
--- a/main.cpp	Wed Feb 03 11:22:17 2016 +0000
+++ b/main.cpp	Mon Feb 08 11:12:07 2016 +0000
@@ -3,7 +3,7 @@
  * @file    main.cpp
  * @author  Fabio Brembilla
  * @version V2.0.0
- * @date    January 22th, 2016
+ * @date    February, 2016
  * @brief   SunTracker + RemoteControl Vertical Application
  *          This application use IHM01A1, 6180XA1, IKS01A1, IDB0XA1 expansion boards
  ******************************************************************************
@@ -38,27 +38,24 @@
 
 /* Includes ------------------------------------------------------------------*/
 
-/* mbed specific header files. */
+// Mbed specific header files
 #include "mbed.h"
 
-/* Helper header files. */
+// Helper header files
 #include "DevSPI.h"
 #include "DevI2C.h"
 
-/* Component specific header files. */
+// Component specific header files
 #include "l6474_class.h"
 #include "x_nucleo_6180xa1.h"
 #include "x_nucleo_iks01a1.h"
 
-/* C header files. */
+// C header files
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <assert.h>
 
-/* Calibration files. */
-#include "MotionFX_Manager.h" // Need for osxMFX_calibFactor
-
 /* BlueTooth -----------------------------------------------------------------*/
 
 #include "debug.h" // Need for PRINTF
@@ -82,10 +79,11 @@
 #include "CustomControlService.h"
 #include "CustomSensorsService.h"
 
-static BLE * p_BLEdev = NULL;
+static BLE *p_BLEdev = NULL;
 
-#define BLE_DEV_NAME "SunTrack"
+#define BLE_DEV_NAME "SunTracker"
 #define BLE_DEV_MAC 0xAA,0xBB,0xCC,0xDD,0xEE,0xFF
+#define BLE_ADVERTISING_INTERVAL 1000
 
 /* Definitions ---------------------------------------------------------------*/
 
@@ -115,26 +113,30 @@
 
 /* ---------------------------------------------------------------------------*/
 
-/* Motor Control Component. */
-L6474 *motor;
+// Motor Control Component
+static L6474 *motor;
 
-/* Initializing SPI bus. */
+// Initializing SPI bus
 DevSPI dev_spi(D11, D12, D13);
 
-/* Initializing I2C bus. */
+// Initializing I2C bus
 DevI2C dev_i2c(D14, D15);
 
-/* Instance board 6180XA1. */
-static X_NUCLEO_6180XA1 *board=X_NUCLEO_6180XA1::Instance(&dev_i2c, NC, NC, NC, NC);
+// Instance board 6180XA1
+//static X_NUCLEO_6180XA1 *board=X_NUCLEO_6180XA1::Instance(&dev_i2c, NC, NC, NC, NC);
+//MeasureData_t data_sensor_top, data_sensor_bottom, data_sensor_left, data_sensor_right;
+static X_NUCLEO_6180XA1 *board;
 MeasureData_t data_sensor_top, data_sensor_bottom, data_sensor_left, data_sensor_right;
-
-/* Instance mems IKS01A1. */
-static X_NUCLEO_IKS01A1 *mems=X_NUCLEO_IKS01A1::Instance(&dev_i2c);
-MotionSensor *accelerometer = mems->GetAccelerometer();
+    
+// Instance mems IKS01A1
+//static X_NUCLEO_IKS01A1 *mems=X_NUCLEO_IKS01A1::Instance(&dev_i2c);
+//MotionSensor *accelerometer = mems->GetAccelerometer();
+static X_NUCLEO_IKS01A1 *mems;
+MotionSensor *accelerometer;
 
 void DISP_ExecLoopBody(void) {};
 
-AnalogIn analog_read_A1(A1);
+//AnalogIn analog_read(A1); // A1 Conflict with BLE SPI_CS --> Changed in A????
 
 InterruptIn mybutton(USER_BUTTON);
 
@@ -152,6 +154,8 @@
     if (start==0) {
         start=1;
     }
+    
+    printf("PUSH Display %d Start %d\r\n", Display, start);
 
 }
 
@@ -159,26 +163,43 @@
 
 bool Initialization(void)
 {
+   
+    // Initializing MEMS Component
+    mems=X_NUCLEO_IKS01A1::Instance(&dev_i2c);
+    accelerometer = mems->GetAccelerometer();
+   
+//----
 
-    /* Initializing Babybear Component. */
+    // Initializing Babybear Component
+    board=X_NUCLEO_6180XA1::Instance(&dev_i2c, NC, NC, NC, NC);
+
+/* FABIO
     status=board->InitBoard();
-    if(status)
-        VL6180x_ErrLog("Failed to init the board!\n\r");
+    if(status) VL6180x_ErrLog("Failed to init the board!\n\r");
+*/
 
     // Put GPIO not used as Interrupt in Hi-Z
     status_t=board->sensor_top->SetGPIOxFunctionality(1, GPIOx_SELECT_OFF);
     //status_b=board->sensor_botton->SetGPIOxFunctionality(1, GPIOx_SELECT_OFF); No Present
     status_l=board->sensor_left->SetGPIOxFunctionality(1, GPIOx_SELECT_OFF);
-    status_r=board->sensor_right->SetGPIOxFunctionality(1, GPIOx_SELECT_OFF);
+    status_r=board->sensor_right->SetGPIOxFunctionality(1, GPIOx_SELECT_OFF);    
+    
+    // Set Babybears
+    status_l=board->sensor_left->AlsSetAnalogueGain(3);
+    status_r=board->sensor_right->AlsSetAnalogueGain(3);
+    status_l=board->sensor_left->StartMeasurement(als_continuous_polling, NULL, NULL, NULL);
+    status_r=board->sensor_right->StartMeasurement(als_continuous_polling, NULL, NULL, NULL);
 
-    /* Initializing Motor Control Component. */
+//----
+
+    // Initializing Motor Component
     motor = new L6474(D2, D8, D7, D9, D10, dev_spi);
     if (motor->Init(NULL) != COMPONENT_OK)
         return false;
 
     motor->SetStepMode(STEP_MODE_1_8);  // Default is STEP_MODE_1_16
 
-    /* Set defaults Motor Speed. */
+    // Set defaults Motor Speed
     motor->SetAcceleration(SET_ACC);
     motor->SetDeceleration(SET_DEC);
     motor->SetMaxSpeed(SET_MAX);        // Variable by Light/Mems Sensors
@@ -240,74 +261,49 @@
     motor->SetMaxSpeed(diff);
 
     if (diff>TOLLERANCE) {
-        if (diff <=RANGE_1) {
-            if (left)  {
-                strcpy(DisplayStr,"E___");
-            }
-            if (right) {
-                strcpy(DisplayStr,"___3");
-            }
-        } else if (diff >RANGE_1 & diff <=RANGE_2) {
-            if (left)  {
-                strcpy(DisplayStr,"E===");
-            }
-            if (right) {
-                strcpy(DisplayStr,"===3");
-            }
-        } else if (diff >RANGE_2) {
-            if (left)  {
-                strcpy(DisplayStr,"E~~~");
-            }
-            if (right) {
-                strcpy(DisplayStr,"~~~3");
-            }
+        if (diff <=RANGE_1)
+        {
+            if (left)  { strcpy(DisplayStr,"E___"); }
+            if (right) { strcpy(DisplayStr,"___3"); }
+        }
+        else if (diff >RANGE_1 & diff <=RANGE_2)
+        {
+            if (left)  { strcpy(DisplayStr,"E==="); }
+            if (right) { strcpy(DisplayStr,"===3"); }
+        }
+        else if (diff >RANGE_2)
+        {
+            if (left)  { strcpy(DisplayStr,"E~~~"); }
+            if (right) { strcpy(DisplayStr,"~~~3"); }
         }
 
         // In Case of Change Direction
-        if (left & dir==2) {
-            changedir=1;
-        }
-        if (right & dir==1) {
-            changedir=1;
-        }
+        if (left & dir==2)  { changedir=1; }
+        if (right & dir==1) { changedir=1; }
 
         // Run only if Stop or Change Direction
         if (diff>TOLLERANCE & (dir==0 | changedir==1)) {
-            if (left) {
-                motor->Run(StepperMotor::FWD);
-                dir=1;
-                changedir=0;
-            }
-            if (right) {
-                motor->Run(StepperMotor::BWD);
-                dir=2;
-                changedir=0;
-            }
+            if (left)   { motor->Run(StepperMotor::FWD); dir=1; changedir=0; }
+            if (right)  { motor->Run(StepperMotor::BWD); dir=2; changedir=0; }
         }
     }
 
     // Get Motor Position and Control Rotation Block
     pos = motor->GetPosition();
     if (pos>STOP | pos<-STOP) {
-        if (pos>0) {
-            motor->GoTo(STOP);
-        }
-        if (pos<0) {
-            motor->GoTo(-STOP);
-        }
+        if (pos>0) { motor->GoTo(STOP); }
+        if (pos<0) { motor->GoTo(-STOP); }
+        printf("GOTO\n\r"); // Without this command, the motor remain in stop
     }
 
     // Stop Motor
-    if (diff<=TOLLERANCE) {
+    if (diff<=TOLLERANCE) { // It continues to send the command to stop the motor. Think to do it just one time
         motor->HardStop();
-        if (Display==0) {
-            strcpy(DisplayStr,"----");
-        }
-        if (Display==2) {
-            strcpy(DisplayStr,"E  3");
-        }
+        if (Display==0) { strcpy(DisplayStr,"----"); }
+        if (Display==2) { strcpy(DisplayStr,"E  3"); }
         dir=0;
         changedir=0;
+        //printf("STOP\n\r");
     }
 
 }
@@ -317,8 +313,9 @@
 void Measure_SolarPanel(void)
 {
 
-    // AnalogIn A1: 0V return 0.0 , 3.3V return 1.0
-    float measure = analog_read_A1.read() * 3300;
+    // AnalogIn: 0V return 0.0 , 3.3V return 1.0
+//    float measure = analog_read.read() * 3300;
+    float measure = 0;
     //printf("Measure = %.0f mV\r\n", measure);
     //board->display->DisplayDigit("A", 0);
 
@@ -327,6 +324,7 @@
     }
 
     board->display->DisplayString(DisplayStr, 4);
+    printf("%s\n\r", DisplayStr);
 
 }
 
@@ -369,12 +367,14 @@
 
     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__);    
+    p_BLEdev->gap().setAddress(BLEProtocol::AddressType::PUBLIC, BLE_address_BE);  
+
+    printf("BLE Init (Line %d)\r\n", __LINE__);
+
+    p_BLEdev->init();
+    
+    printf("BLE Init OK (Line %d)\r\n", __LINE__);
 
     // Set BLE CallBack Functions
     p_BLEdev->gattServer().onUpdatesEnabled(onUpdatesEnabledCallback);
@@ -387,6 +387,21 @@
     //p_BLEdev->gattServer().onDataSent(onDataSentCallback);    
     //p_BLEdev->gap().onTimeout(onTimeoutCallback);
 
+    // Setup BLE 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();
+
 }
 
 /* Main ----------------------------------------------------------------------*/
@@ -394,28 +409,33 @@
 int main()
 {
 
+    // Printing to the console
+    printf("SunTracker by Fabio Brembilla\r\n\n");
+
     Initialization();
 
-    //BLE_Initialization();
-
+    printf("Initialization OK (Line %d)\r\n", __LINE__);    
+    
+    BLE_Initialization();
+        
+    printf("BLE_Initialization OK (Line %d)\r\n", __LINE__);
+        
     mybutton.fall(&User_Button_Pressed);
-
-    /* Printing to the console. */
-    printf("SunTracker by Fabio Brembilla\r\n\n");
+    
+    printf("Main Initializations OK (Line %d)\r\n", __LINE__);
+    printf("Wait Push Button\r\n");
 
-    /* Set Babybears. */
-    status_l=board->sensor_left->AlsSetAnalogueGain(3);
-    status_r=board->sensor_right->AlsSetAnalogueGain(3);
-    status_l=board->sensor_left->StartMeasurement(als_continuous_polling, NULL, NULL, NULL);
-    status_r=board->sensor_right->StartMeasurement(als_continuous_polling, NULL, NULL, NULL);
-
-    /* Loop until push User Button to Set 0 Point. */
+    // Loop until push User Button to Set 0 Point
     strcpy(DisplayStr,"pusH");
     while(start<1) {
         board->display->DisplayString(DisplayStr, 4);
+        printf("%s\n\r", DisplayStr);
+        //wait(0.1); // Need one command otherwise remain always in loop
     }
 
-    /* Main Loop. */
+    printf("Start Main Loop\r\n");
+
+    // Main Loop
     while(true) {
         if (Display==0 | Display==1)    {
             Measure_Babybear();
@@ -426,9 +446,11 @@
 
         Control_Motor();
         Measure_SolarPanel();
+        
+        p_BLEdev->waitForEvent();
     }
 
-    status_l=board->sensor_left->StopMeasurement(als_continuous_polling);
-    status_r=board->sensor_right->StopMeasurement(als_continuous_polling);
+    //status_l=board->sensor_left->StopMeasurement(als_continuous_polling);
+    //status_r=board->sensor_right->StopMeasurement(als_continuous_polling);
 
 }