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Unread 01-04-2015, 10:32
randantor randantor is offline
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AKA: James Y
FRC #0624 (CRyptonite)
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Re: ANNOUNCING: navX MXP Robotics Navigation Sensor

We are also having issues with reading the NavX at times. We are using LabVIEW with the SPI bus. Sometimes the data is all 0 with the 'Data Valid' output false. In every case, restarting the robot code from the driver station gets it working again. Before, I had only seen it on our comepetition robot while connected to the FMS, and I thought it was related to the clock issue mentioned earlier, but yesterday it happened twice on the practice bot, which has a diffferent roborio and NavX board. I would say it happens about 1 in every 10-12 robot starts.

I haven't tried I2C or UART, but we may switch protocols for Lone Star and see what happens.
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