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Texas Instruments Serial Programming Adapter MSP430, User Manual

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Texas Instruments Serial Programming Adapter MSP430 User Manual Download Page 21

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PC Sensor Monitor Application

4.2.4 PC Sensor Monitor Application Source Code

The eZ430-RF2500-SEH Sensor Monitor application is open source and is licensed under GNU General
Public License v2. The source code is included in

SLAC219

. It was developed using the open source

Qt

cross-platform applications framework,

QWT

, and compiled using

Microsoft Visual C++ 2008 Express

Edition

, which are all freely available. For detailed instructions on how to setup the environment to edit the

project, see the README.txt in the source code directory.

21

SLAU273C – January 2009 – Revised May 2010

eZ430-RF2500-SEH Sensor Monitor

Copyright © 2009–2010, Texas Instruments Incorporated

Summary of Contents for Serial Programming Adapter MSP430

Page 1: ...eZ430 RF2500 SEH Solar Energy Harvesting Development Tool User s Guide Literature Number SLAU273C January 2009 Revised May 2010 This datasheet has been downloaded from http www digchip com at this page ...

Page 2: ...2 SLAU273C January 2009 Revised May 2010 Copyright 2009 2010 Texas Instruments Incorporated ...

Page 3: ...13 3 2 Solar Energy Harvester Module SEH 01 Figure and Description 13 3 3 Solar Energy Harvester Module SEH 01 Operating Characteristics 15 3 4 Solar Energy Harvester Module SEH 01 Circuit Schematic 15 3 5 Pulse Discharge Current for a Wireless End Device 16 4 eZ430 RF2500 SEH Sensor Monitor 17 4 1 MSP430 Firmware 17 4 1 1 Downloading Firmware to the MSP430 17 4 2 PC Sensor Monitor Application 18 ...

Page 4: ...Module Connections 14 3 3 Solar Energy Harvester Module Schematic 15 4 1 eZ430 RF2500 SEH Sensor Monitor 18 4 2 Menu Bar 19 4 3 Console Window 19 4 4 Real Time Node Data from the Graph Window 20 4 5 Configurations Window 20 List of Tables 3 1 SEH 01 Operating Characteristics 15 4 List of Figures SLAU273C January 2009 Revised May 2010 Copyright 2009 2010 Texas Instruments Incorporated ...

Page 5: ...nformation is found at www ti com msp430 Information specific to the eZ430 RF2500 SEH development tool can be found at http focus ti com docs toolsw folders print ez430 rf2500 seh html MSP430 device user s guides and the FET user s guide SLAU157 may be accessed on the included CD ROM under the User s Guides section The FET user s guide includes detailed information on setting up a project for the ...

Page 6: ...6 Read This First SLAU273C January 2009 Revised May 2010 Copyright 2009 2010 Texas Instruments Incorporated ...

Page 7: ... harvesting system The eZ430 RF2500 is used to run the energy harvesting application It is a complete USB based MSP430 wireless development tool and provides all the hardware and software necessary to use the MSP430F2274 microcontroller and CC2500 2 4 GHz wireless transceiver It includes a USB debugging interface that allows for real time in system debugging and programming for the MSP430 and it i...

Page 8: ...tware eZ430 RF2500 SEH Demo and Source Code SLAC219 eZ430 RF2500 SEH Development Tool User s Guide SLAU273 eZ430 RF2500 Development Tool User s Guide SLAU227 MSP430x2xx Family User s Guide SLAU144 MSP FET430 Flash Emulation Tool FET for Use With CCE v3 1 User s Guide SLAU157 Code Composer Essentials v3 1 Core Edition SLAC063 NOTE For the latest software and documentation visit http focus ti com do...

Page 9: ...r Guide SLAU227 includes the following information which is not covered in this document eZ430 RF2500T target board pinout MSP430F2274 and CC2500 specifications List of eZ430 emulator supported devices MSP430 application UART description Detailed eZ430 RF2500 hardware installation eZ430 RF2500 FAQ eZ430 RF2500 schematics and layout 9 SLAU273C January 2009 Revised May 2010 eZ430 RF2500 SEH Overview...

Page 10: ...10 eZ430 RF2500 SEH Overview SLAU273C January 2009 Revised May 2010 Copyright 2009 2010 Texas Instruments Incorporated ...

Page 11: ...ore information see Section 14 Detailed Hardware Installation Guide from the eZ430 RF2500 user s guide SLAU227 The Sensor Monitor PC application should now detect the MSP430 Application UART on the appropriate COM port and the center bubble in the program blinks once a second 2 Take the second eZ430 RF2500T target board and attach it to the Solar Energy Harvesting Module SEH 01 on connector J1 All...

Page 12: ...e from http supp iar com Download SW item EW430 EVAL This document describes working with only Code Composer Essentials 2 5 Install the eZ430 RF2500 SEH Sensor Monitor Firmware Source To edit the original energy harvesting project the source code must be installed A specific folder structure is required and it is recommended to leave the default install path If it is not possible to install to the...

Page 13: ...The Power Management block prevents the EnerChip from discharging too deeply in low light conditions or under abnormally high current loads It also ensures that the load is powered up with a smooth power on transition The Power Management block has a control line CHARGE which indicates to the MSP430 that the solar energy harvester is actively charging the EnerChip The control line input BATOFF is ...

Page 14: ...et board J5 Connector Alternate connection point to power an external device or for measuring SEH 01 output levels J7 Connector Trace to cut if an alternate solar panel is connected to J8 J8 Jumper Battery enable jumper the shunt must be removed before the module is charged This connector can also be used to connect an alternate solar panel to the SEH 01 PT1 Connector An alternate piezoelectric en...

Page 15: ...ing voltage 4 06 V Battery cutoff voltage 3 3 3 3 6 V Pulse discharge current 20 ms 30 mA Self discharge rate non recoverable average 25 C Per year 2 5 Operating temperature 0 25 70 C 10 depth of discharge 5000 25 C Recharge cycles 50 depth of discharge 1000 to 80 of rated capacity 10 depth of discharge 2500 4 1 V charge voltage 40 C 50 depth of discharge 500 Recharge time to 80 of rated capacity ...

Page 16: ...ration The latency time that must be imposed between pulses to allow the capacitor to be recharged by the battery Both formulas assume that the capacitor ESR is sufficiently low to result in negligible internal voltage drop while delivering the specified pulse current consequently only the battery resistance is considered in the formula used to compute capacitor charging time and only the load res...

Page 17: ...wing steps The source code will be installed on the PC with the setup program included in SLAC219 1 Open Code Composer Essentials v3 1 2 Open any available Workspace 3 Import the project to the Workspace a Click Project Open Existing Project Browse b Navigate to the source code location The default location is C Texas Instruments eZ430 RF2500 SEH_Sensor_Monitor v1 5 CCE_Source c Ensure SEH Sensor ...

Page 18: ...ntation of the star network and displays the sampled data from each wireless device The center node is the Access Point and the attached nodes are the End Devices which display their temperature voltage and their transmission frequency The physical distance of the End Device from the Access Point is simulated on screen by measuring the signal strength RSSI of the received signal The number of End ...

Page 19: ... Stop controls are available to control the connection with the COM port Play Opens the MSP430 application UART COM port and resumes receiving data Pause Closes the COM port which stops the application from receiving data Stop Closes the COM port which stops the application from receiving data and clears the nodes from the window 4 2 3 2 Console Window The console window see Figure 4 3 is used to ...

Page 20: ...vailable MSP430 Application UART and refreshes the drop down whenever a new COM port is available This means it is rarely necessary to use the COM port selection list unless multiple MSP430 Applications UARTs are available on the PC 4 2 3 5 Configurations Settings for the Sensor Monitor application can be changed in the configurations window The default temperature unit can be modified as well as ...

Page 21: ...n SLAC219 It was developed using the open source Qt cross platform applications framework QWT and compiled using Microsoft Visual C 2008 Express Edition which are all freely available For detailed instructions on how to setup the environment to edit the project see the README txt in the source code directory 21 SLAU273C January 2009 Revised May 2010 eZ430 RF2500 SEH Sensor Monitor Copyright 2009 2...

Page 22: ...22 eZ430 RF2500 SEH Sensor Monitor SLAU273C January 2009 Revised May 2010 Copyright 2009 2010 Texas Instruments Incorporated ...

Page 23: ... profile and most importantly have a negligible self discharge Self discharge is the property of batteries or capacitors to lose charge over time however thin film batteries lose only a small percentage of their charge over a long period of time 4 Why is the battery pack included if the eZ430 RF2500T is intended to run from the Solar Energy Harvester The battery pack is may be useful when trying t...

Page 24: ...he energy harvesting board so large when my TI 36X works fine with a tiny solar panel The current required to run a calculator and LCD is relatively small Running a wireless sensor network however consumes approximately 10 mA to 25 mA when trying to simultaneously sample sensors and transmit data wirelessly This current might be 100 to 1 000 times more than a calculator application A larger solar ...

Page 25: ...ch statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necessary expertise in the safety and regulatory ramifications o...

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