Frequently Asked Questions
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January 6, 2006
about 7 months ago
This block (and the UART block) offers the possibility to switch between the Edison UART1 and UART2. However, I have not found a clear answer to how to enable UART2 which is used by default by the console. The question has been asked on the Intel forum where the correct answer suggests to reproduce what is being done on the Edison Arduino breakout firmware.
However, this approach relies on the presence of a /etc/inittab file that cannot be found in my Edison installation. So what would be the recipe to unleash this capability in the Sparkfun blocks?
EDIT: After some research, I have been able to find a crude way to disable the console on UART2, thanks to this post
FIRST MAKE SURE THAT YOU HAVE ACCESS TO THE CONSOLE WIRELESSLY THROUGH SSH, as you will need this access to reattach the console to UART2 later on if you wish.
Open an SSH session and disable the console with:
shutdown -r now
- Open an SSH session and enable the console with
fw_setenv bootargs_console console=ttyMFD2 earlyprintk=ttyMFD2,keep
This could surely be automated the same way as in the Edison Arduino firmware.
about 9 months ago
You have not been charged yet. Just cancel the command.
If you have such confidence in the product, why are you monitoring the delivery date?
about 11 months ago
I understand that unless you want to solder wires directly to the prototyping area, what type of connector would the most appropriate to get access to the full array of connections (4 x 17) from under the breakout?
Will this be a 3.3 or 5 V Arduino?
For those of you who are willing to invest your time in a rigorous calibration effort, here is a 20$ alternative, using a Pro Mini 3.3V.
about 2 years ago
Yes it is. See http://sailboatinstruments.blogspot.ca/2012/10/talking-to-android-phone-through-wi-fi.html
about 4 years ago
A correction to the previous comment : you CAN release the chip select line during the measurement. It only has to be down during SPI communications : when sending the command, and when reading the result, preferably using an external interrupt on the DRDY line. The responsiveness of this magnetometer is so sharp (no hysteresis) that you can avoid using a gyro. See
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