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kkrambo

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About kkrambo

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    Ohio
  1. I figured out part of the problem. When I used the generic ARM Cortex-M Project template from GNU ARM Eclipse Plug-ins to create my project, it created a linker script with FLASH originating at 0x08000000, which is appropriate for STM32F* but is incorrect for Stellaris and Tiva microcontrollers. I changed the FLASH origin to 0x00000000 and now the debugger seems to start correctly and I can begin to step through the code. However, the program doesn't run correctly so there is still more work to do.
  2. I have the Stellaris LaunchPad and I can use it successfully with CCS and IAR. Now I am trying to setup the Eclipse CDT with the GNU ARM Eclipse plug-ins, GCC ARM toolchain, and OpenOCD on my Windows system. I have been following the instructions at the GNU ARM Eclipse plug-ins website. I have successfully created and built a project from the plug-in's generic ARM Cortex-M Project template. But now I am stuck trying to run the debugger with the OpenOCD GDB Server. I created a debugger configuration as described on the GNU ARM Eclipse Plug-ins instructions, here. Except on the Debugger
  3. Thanks for the ideas. I ordered an ISD4003 ChipCorder along with an LM386 audio amp and some other parts. Those recordable greeting card modules on ebay are cool and cheap too -- I may get some of those for another project. In case anyone else is interested, here are a few other related links I found: This article is a walk through of how a commercial toy with voice is developed. They use a custom WinBond part, which I believe is like the ISD4003 Chip Corder. This guy uses the ChipCorder parts to incorporate sound into his Halloween projects. This article discusses other aud
  4. I'd like to make toy like a busy-box for my daughter using my Stellaris LaunchPad. I know how to implement the basic switch inputs and LED outputs. But I'd like to add some audio features and I don't know how to implement those. I'd like to: Record and play back several seconds of voice Play sound effects and short musical samples stored in nonvolatile memory My questions are: What hardware components should I use to record and playback basic quality audio? A mic and speaker seem obvious, and probably a ADC and DAC, but what else is required? Is there a booster pack that I can use?
  5. Wow! Thank you for this walkthrough and examples. I got the Volume demo working. And it also controls the volume of my phone when I connect the LaunchPad to my phone with an OTG cable such as this. I have a Samsung Galaxy Nexus. I suspect this will work with any Android device running Ice Cream Sandwich or later and supporting USB Host. With the LED blink application that came on the LaunchPad, I could connect just one USB cable to the DEBUG port which would both power the device and serve as a serial communications port for a terminal application. So I wasn't expecting to have to
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