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MIT 6 111 - Super IO

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Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Super IORoss GlashanJames Wnorowski6.270 : The Handyboard●Created by Fred Martin (Media Lab) in 1995●2MHz 68HC11 + 32K RAM●6 Motors, 6 Servos●8 Digital IO, 24 Analog IO●2 Shaft Encoders●LCD, pushbuttons●All IO controlled from softwareProblems●Handyboard is 10 year old design (68HC11 no longer available)●No significant updates to design since 1999●Slow, underpowered●Everything done in software – heavy loading causes problems●Contestants beginning to push HB beyond its capabilities●Want new featuresProposed Solution●New board design based around FPGA + Microcontroller●Microcontroller performs high-level control●FPGA performs low-level conrol (controls motors, IO ...)●FPGA (“SuperIO Chip”) - MCU communications via I2C●All the features of the Handyboard and more●Built-in closed loop motor control●Automatic polling of sensor ports●Graphics LCD controllerHigh Level DesignSuperIO DesignInterface I2C:Addressing Modules●Each module has a base address + N registers●Registers accessable over bus●Address space allocated to each module type–32 regs for motors–24 for analog–...Example Driver


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MIT 6 111 - Super IO

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