nemetila 12 Posted January 23, 2013 Share Posted January 23, 2013 Hi, Here is my first project with Stellaris Launchpad. This is a very simple thermometer, that uses the internal temperature sensor of the Stellaris MCU for temperature measuring, and the UART_0 module for sending data to a PC application. The PC application displays the current temperature in °C numerically and graphically (acts as a logger). Short Description: In every two seconds the MCU: measures the temperature with ADC:ADC with 4 Samples and FIFO Depth Each FIFO with 64X Hardware Sample Averaging ADC Speed: 250 KS/s calculates the average and the temperature data in °C:Only integer math is used sends data to the PC:UART_0 module, TX only Baud Rate 115200 kbit/s Data format: „C” -> real temp 23.56978°C Data format: „dC” -> real temp 23.56978°C sent data: „236dC” Data format: „cC” -> real temp 23.56978°C sent data: „2357cC” and then enters to hibernation:Hibernation reduces self heating Wake from hibernation by RTC or WAKE_PIN LED indicators: BLUE: start from cold reset GREEN: start from hibernation by RTC (indicates run mode) RED: start from hibernation by WAKE_PIN Source Code: I used CCS 5.3 with StellarisWare to create the source code. Here is the full project:Stellaris_v01.zip Install CCS 5 and StellarisWare. Download and extract the *.zip file, then start CCS and use "Project"->"Import existing CCS Eclipse Project". Browse the extracted "Stellaris_v01" directory and click "Finish". Build Project then debug. I developed the PC application in C# with Visual Studio 2012, in Windows 8. The release files: Release.zip I updated my PC application. New features: error corrections users can select between Celsius [°C] and Fahrenheit [°F] temperature scale The release files: http://forum.stellarisiti.com/index.php?app=core&module=attach§ion=attach&attach_id=309 The source files: https://copy.com/4DkJpd4O49ky Requirements: Stellaris LM4F120 LaunchPad (no additional hardware is needed) Windows OS with .NET Framework 4 (for PC app.) A firmware for the MSP430 LaunchPad (MSP430G2553) with additional features(selectable averaging, supply voltage mesurement) is also available to the same PC application. The source code: main.c Important notes: „Getting Started with the Stellaris ® EK-LM4F120XL LaunchPad Workshop”: "Code Composer Studio has some issues connecting to hibernating devices (and reconnecting) since they essentially power off in the middle of the debugging process.We’ll try to step around those issues, but you may see CCS terminate abruptly. If this happens, you can restart CCS and try again, or you can use the LM Flash Programmer to reprogram the device with the qs-rgb (non-hibernation) program. In either case, you need to hold SW2 down to keep the LM4F device awake in order for either tool to connect." I am new to ARM(Stellaris). Some of the hibernation API functions is not clear to me. Sorry for my English Regards, Laszlo Updated: 02 June 2014 morry, bluehash, Automate and 3 others 6 Quote Link to post Share on other sites
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