
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
Diff: main_only_BLE.cpp.h
- 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>© 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(); + } + + +}