
SunTracker_BLE
Dependencies: BLE_API X_NUCLEO_6180XA1 X_NUCLEO_IDB0XA1 X_NUCLEO_IHM01A1 X_NUCLEO_IKS01A1 mbed
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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.
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 structureis 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 efficiencywith 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
- Nucleo-F401RE platform using a STM32F401RET6 microcontroller.
- X-NUCLEO-IHM01A1 - Stepper motor driver board based on the EasySPIN L6474.
- X-NUCLEO-6180XA1 - 3-in-1 proximity and ambient light sensor board based on ST FlightSense technology.
- VL6180X-SATEL - Satellite boards compatible with X-NUCLEO-6180XA1 board.
- X-NUCLEO-IKS01A1 - Motion MEMS and environmental sensor board.
- X-NUCLEO-IDB04A1 or X-NUCLEO-IDB05A1 - Bluetooth Low Energy Bluetooth low energy evaluation board.
- 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
- Nucleo-F401RE platform using a STM32F401RET6 microcontroller.
- X-NUCLEO-IKS01A1 - Motion MEMS and environmental sensor board.
- X-NUCLEO-IDB04A1 or X-NUCLEO-IDB05A1- Bluetooth Low Energy Bluetooth low energy evaluation board.
MECHANICAL STRUCTURE
Find here the STL files to print with a 3D printer.
FLAT CABLE ASSEMBLY
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
Revision 9:ca289bf57f52, committed 2016-02-26
- Comitter:
- fabiombed
- Date:
- Fri Feb 26 12:51:03 2016 +0000
- Parent:
- 8:144855fe02bd
- Child:
- 10:d154094297ce
- Commit message:
- SunTracker with MEMS but without BLE
Changed in this revision
CustomControlService.h | Show annotated file Show diff for this revision Revisions of this file |
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/CustomControlService.h Fri Feb 12 10:52:50 2016 +0000 +++ b/CustomControlService.h Fri Feb 26 12:51:03 2016 +0000 @@ -65,9 +65,9 @@ GattCharacteristic *charTable[] = {&userbuttonCharacteristic}; - GattService configService(CONTROL_SERVICE_UUID_128, charTable, sizeof(charTable) / sizeof(GattCharacteristic *)); + GattService controlService(CONTROL_SERVICE_UUID_128, charTable, sizeof(charTable) / sizeof(GattCharacteristic *)); - ble.gattServer().addService(configService); + ble.gattServer().addService(controlService); isEnabledControlNotify = false; memset (controlData, 0, SIZEOF_CONTROL_DATA_LEN);
--- 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);