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SW-EK-TM4C1294XL: Is it possible to develop LRF system with TM4C board?

Takano
Expert 1345 points
Part Number: SW-EK-TM4C1294XL

Hi all,

We consider to develop laser rangefinder (LRF) system using the TM4C launchpad board. The TM4C is used for harnessing motor control, and LD emission control, and ethernet for network between host and the launchpad board. Sensing period is about 9usec. We use i2c for communication to motor driver, spi for communication to application processor which calculates distance and controls PD, ethernet for host networking. I think I need to use interruption for efficient entire control, but I think the 9usec period is very hard for the communication cost, especially the ethernet.

120MHz * 9usec = 1000 clock cycles budget for entire controlling, I do not know TM4C fits the our requirements. Anyone can suggest best chip for the requirements or 120MHz is sufficient for the requirements? and anyone know evaluation board of LRF system?

Thanks and Regards,

Takano

  • 0
    TI__Guru 72500 points
    While the peripherals on the TM4C1294 will minimize the CPU load, your control loop is very tight. Perhaps you can code the Ethernet part and see how much CPU time you have left. You can also use the DMA to minimize CPU time.