SPI0.write crashes Beagleblone

[jonturner53]

Running the following code causes the BeagleBone to crash when it gets to the SPI0.write() call. To recover, I have to reset the board. Am I doing something wrong here?

I am new to both the BeagleBone and PyBBIO, so I may be making a newbie error. However, I have run a few tests involving the GPIOs and they all seem to work ok. The blinking led example works fine, so I think the installation is ok. I currently have no circuits connected to the board, so the tests using the GPIOs are just wiggling pins (I have checked a few using a multi-meter, make sure they're responding).

Jon Turner

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import sys from bbio import *

def setup(): SPI0.open() SPI0.setClockMode(0,0)
SPI0.setMaxFrequency(0,1000000) SPI0.setBitsPerWord(0,10) SPI0.setMSBFirst(0)

def loop() : print "about to write" SPI0.write(0,[0x15]) print "done" sys.exit(0)

run(setup, loop)

[jonturner53]

import sys from time import sleep from bbio import *

def setup(): SPI0.open() SPI0.setClockMode(0,0) # means data stable on rising edge? SPI0.setMaxFrequency(0,1000000) # 1 MHz SPI0.setBitsPerWord(0,10) # 2 bits used to specify pots, then value SPI0.setMSBFirst(0)

def loop() : print "about to write" SPI0.write(0,[0x15]) print "done" sys.exit(0)

run(setup, loop)