Thomas1426459898

The UART is used and is mapped through the "debugging Stellaris" to CDC/USB. This communication path ist not very fast but it matches the concept of SUMP.. sampling is done to RAM and in a next step is transmitted over serial to a PC.

Hi, I've played around with the CAN module of the Stellaris controller on the Launchpad. To connect the Stellaris Launchpad to a CAN bus, an external CAN transceiver is needed... but only a few wires are necessary. See the attached circuit diagram. Some further details about my experiments: http://www.fischl.de/arm/can_bus_interface_for_stellaris_launchpad/ Thomas

Thanks! I've created a new thread in the Project folder: http://forum.stellarisiti.com/topic/418-sllogiclogger-a-simple-logic-analyser-for-the-stellaris-launchpad/

Hi, Here is my last project with the Stellaris Launchpad: SLLogicLogger - A simple logic analyser for the TI Stellaris Launchpad. Logic levels on PORTB are sampled with 10MHz to RAM (16 kBytes) and then transmitted through the debugging controller over USB to a host computer. No additional hardware is needed - a pure Stellaris Launchpad connected over the debug-USB to an PC is enough. The firmware implements the main functions of SUMP, a serial protocol for logic analysers. There are some clients which supports SUMP. I used LogicSniffer OLS (http://www.lxtreme.nl/ols/) which is a multi

Interesting topic! I played around with the other direction: reading fast as possible from GPIO and save the values to RAM (see project description http://forum.stellarisiti.com/topic/335-open-nov-dec-2012-stellarisiti-project-of-the-month-contest/?p=1972). I got a maximum sample rate of 10 MHz. Perhaps some of this hints are also useful for reading GPIO instead of toggling!

Here is my December project: SLLogicLogger - A simple logic analyser for the TI Stellaris Launchpad. Logic levels on PORTB are sampled with 10MHz to RAM (16 kBytes) and then transmitted through the debugging controller over USB to a host computer. No additional hardware is needed - a pure Stellaris Launchpad connected over the debug-USB to an PC is enough. The firmware implements the main functions of SUMP, a serial protocol for logic analysers. There are some clients which supports SUMP. I used LogicSniffer OLS (http://www.lxtreme.nl/ols/) which is a multiplatform Java client. A simple OLS p

I followed the tutorial on http://www.jann.cc/2012/12/11/getting_started_with_the_ti_stellaris_launchpad_on_linux.html to install this toolchain on linux/ubuntu. It compiles the "Stellarisware" with its demos and examples without any problems. But I've no further experiences with it.. I just played around with small test programs yet.

I also used the MCP2551 to connect a LM4F120 (on the Stellaris Launchpad) to a CAN bus. It's really simple.. just connect the TX and RX lines to the MCP2551 and set the proper pin configuration in the simple_tx example (I used PE4/PE5 for the CAN0 module). Here is my mini-howto: http://www.fischl.de/arm/can_bus_interface_for_stellaris_launchpad/