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:
9:ca289bf57f52
Parent:
8:144855fe02bd
Child:
10:d154094297ce
--- a/main.cpp	Fri Feb 12 10:52:50 2016 +0000
+++ b/main.cpp	Fri Feb 26 12:51:03 2016 +0000
@@ -135,7 +135,7 @@
 
 InterruptIn mybutton(USER_BUTTON);
 
-//AnalogIn analog_read(A1); // A1 Conflict with BLE SPI_CS --> Changed it!!!
+AnalogIn analog_read(PC_3); // A1 Conflict with BLE SPI_CS del BLE --> Changed in Morpho PC_3
 
 /* User_Button_Pressed -------------------------------------------------------*/
 
@@ -150,6 +150,87 @@
 
 }
 
+/* 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)
+{
+    printf ("myonDataWriteCallback attr_handle: %x  att_data[3]: %x  data_length: %d\n\r", eventDataP->handle, eventDataP->data[3], eventDataP->len );
+    
+    if (p_customcontrolservice->isContHandle(eventDataP->handle)) // Only if write come from this Service
+    {
+        uint8_t Command = eventDataP->data[3];  // Riceve 8 byte: data[0] + data[1] + data[2] + data[3]
+        printf("myonDataWriteCallback (Command %x)\r\n", Command);
+    }
+}
+
+static void onConnectionCallback(const Gap::ConnectionCallbackParams_t * connectionParams)
+{
+    printf("onConnectionCallback (Line %d)\r\n", __LINE__);   
+}
+
+static void onDisconnectionCallback(const Gap::DisconnectionCallbackParams_t * disConnectionReason)
+{
+    printf("onDisconnectionCallback (Line %d)\r\n", __LINE__);
+    p_BLEdev->gap().startAdvertising();
+}
+
+/* Bluetooth Initialization ---------------------------------------------------*/
+
+bool 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);
+    
+    p_BLEdev->init();
+
+    // 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);
+
+    // BLE Services
+    p_customcontrolservice =  new CustomControlService(*p_BLEdev);   
+    p_customsensorservice = new CustomSensorService(*p_BLEdev);
+
+    // Setup BLE Advertising
+    const static char DEVICE_NAME[] = BLE_DEV_NAME;
+    p_BLEdev->gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+    uint8_t dat[] = {0x01,0x80,0x00,0xFC,0x00,0x00};    
+    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();
+
+    return true;
+    
+}
+
 /* Initialization ------------------------------------------------------------*/
 
 bool Initialization(void)
@@ -165,8 +246,8 @@
     //board=X_NUCLEO_6180XA1::Instance(&dev_i2c);
     board=X_NUCLEO_6180XA1::Instance(&dev_i2c, NC, NC, NC, NC);
 
-    //status=board->InitBoard();
-    //if(status) VL6180x_ErrLog("Failed to init the board!\n\r");
+    status=board->InitBoard();
+    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);
@@ -183,7 +264,8 @@
 //----
 
     // Initializing Motor Component
-    motor = new L6474(D2, D8, D7, D9, D10, dev_spi); // D7 conflict with BNRG_RST (when motor change direction 0-1 reset BLE)
+    motor = new L6474(D2, D8, PB_2, D9, D10, dev_spi); // D7 conflict with BNRG_RST (when motor change direction 0-1 reset BLE)
+                                                       // Used Morpho PB_2 and made HW wiring
     if (motor->Init(NULL) != COMPONENT_OK)
         return false;
 
@@ -298,7 +380,7 @@
 {
     
     // AnalogIn: 0V return 0.0 , 3.3V return 1.0
-    float measure = 0; //analog_read.read() * 3300;
+    float measure = analog_read.read() * 3300;
     //printf("Measure = %.0f mV\r\n", measure);
     //board->display->DisplayDigit("A", 0);
 
@@ -309,87 +391,6 @@
     
 }
 
-/* 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)
-{
-    printf ("myonDataWriteCallback attr_handle: %x  att_data[3]: %x  data_length: %d\n\r", eventDataP->handle, eventDataP->data[3], eventDataP->len );
-    
-    if (p_customcontrolservice->isContHandle(eventDataP->handle)) // Only if write come from this Service
-    {
-        uint8_t Command = eventDataP->data[3];  // Riceve 8 byte: data[0] + data[1] + data[2] + data[3]
-        printf("myonDataWriteCallback (Command %x)\r\n", Command);
-    }
-}
-
-static void onConnectionCallback(const Gap::ConnectionCallbackParams_t * connectionParams)
-{
-    printf("onConnectionCallback (Line %d)\r\n", __LINE__);   
-}
-
-static void onDisconnectionCallback(const Gap::DisconnectionCallbackParams_t * disConnectionReason)
-{
-    printf("onDisconnectionCallback (Line %d)\r\n", __LINE__);
-    p_BLEdev->gap().startAdvertising();
-}
-
-/* Bluetooth Initialization ---------------------------------------------------*/
-
-bool 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);
-    
-    p_BLEdev->init();
-
-    // 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);
-
-    // BLE Services
-    p_customcontrolservice =  new CustomControlService(*p_BLEdev);   
-    p_customsensorservice = new CustomSensorService(*p_BLEdev);
-
-    // Setup BLE Advertising
-    const static char DEVICE_NAME[] = BLE_DEV_NAME;
-    p_BLEdev->gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
-    uint8_t dat[] = {0x01,0x80,0x00,0xFC,0x00,0x00};    
-    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();
-
-    return true;
-    
-}
-
 /* Main ----------------------------------------------------------------------*/
 
 int main()
@@ -397,12 +398,12 @@
 
     // Printing to the console
     printf("SunTracker by Fabio Brembilla\r\n\n");
-
+    
     Initialization();
     printf("Initialization OK (Line %d)\r\n", __LINE__);    
     
-    BLE_Initialization();
-    printf("BLE_Initialization OK (Line %d)\r\n", __LINE__);  
+    //BLE_Initialization();
+    //printf("BLE_Initialization OK (Line %d)\r\n", __LINE__);  
         
     mybutton.fall(&User_Button_Pressed);
     printf("Wait Push Button\r\n");
@@ -411,13 +412,13 @@
     strcpy(DisplayStr,"pusH");
     while(start<1) {
         board->display->DisplayString(DisplayStr, 4);
-        p_BLEdev->waitForEvent();
+        //p_BLEdev->waitForEvent();
         //printf("%s\n\r", DisplayStr);
     }
 
     printf("Start Main Loop\r\n");
 
-    static int INTLOOP=0;
+    //static int INTLOOP=0;
 
     // Main Loop
     while(true)
@@ -428,10 +429,10 @@
         Control_Motor();
         Measure_SolarPanel();
         
-        INTLOOP++;
-        if (INTLOOP==100) { p_customsensorservice->sendEnvPosition(rand(),0); printf("Read BLE\n\r"); INTLOOP=0; }
+        //INTLOOP++;
+        //if (INTLOOP==100) { p_customsensorservice->sendEnvPosition(rand(),0); printf("Read BLE\n\r"); INTLOOP=0; }
         
-        p_BLEdev->waitForEvent();
+        //p_BLEdev->waitForEvent();
     }
 
     //status_l=board->sensor_left->StopMeasurement(als_continuous_polling);