Tag Archives: stm32

FM Synthesis!

July 22, 2011 by jboone

More progress on my “audio Arduino” prototype: I got FM (frequency modulation) synthesis working a few days ago, but it didn’t sound terribly interesting. Then I spent a couple of days building C headers for the STM32F205 processor (libopenstm32 and … Continue reading →

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Microcontroller PLL and I2S operating!

July 14, 2011 by jboone

Yesterday was spent getting the clock system in the STM32F205 up and running. ST provides an Excel spreadsheet which makes this task easy — or at least, I’m assuming it does, because I don’t have Excel and can’t open their … Continue reading →

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Audio Prototype is Alive!

July 11, 2011 by jboone

I soldered up my prototype PCBs for my audio project today, and got some JTAG/SWD hardware help from Jim Larson. The net result is a partially-populated STM32F205 board that will talk to me via SWD and OpenOCD! Foreground (purple DorkbotPDX … Continue reading →

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