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Difference between revisions of "Minnowboard:FAQ"

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m (Added RTC battery polarity)
m (Added more details on an FAQ item)
 
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==== 1. Does [http://www.memtest86.com/ Memtest] work on the Minnowboard? ====
 
==== 1. Does [http://www.memtest86.com/ Memtest] work on the Minnowboard? ====
 
  
 
Ans:- No, not currently. The Memtest software is made for the traditional PC-BIOS environment whereas the Minnowboard has the new [http://en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface UEFI] firmware. So, until a new version of Memtest is released for the UEFI, it won't work.
 
Ans:- No, not currently. The Memtest software is made for the traditional PC-BIOS environment whereas the Minnowboard has the new [http://en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface UEFI] firmware. So, until a new version of Memtest is released for the UEFI, it won't work.
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==== 4. Can I access the user switches on the MinnowBoard via the sysfs interface in Linux? ====
 
==== 4. Can I access the user switches on the MinnowBoard via the sysfs interface in Linux? ====
  
Ans:- No.
+
Ans:- Yes.
 +
 
 +
Out of the box, the minnowboard_keys driver maps the GPIO buttons to keystrokes via the gpio-keys-polled driver. To access them via sysfs, you must unload the driver and export the GPIO lines:
 +
# modprobe -r minnowboard_keys
 +
# cd /sys/class/gpio
 +
# echo 0 > export
 +
# echo 1 > export
 +
# echo 2 > export
 +
# echo 3 > export
 +
# cat gpio0/value
 +
1
 +
 
 +
==== 5. What model battery is used for the Real-Time Clock (RTC)? The silkscreen for the RTC battery polarity is incorrect on the MinnowBoard. Will I damage the board if I insert the battery backwards? ====
 +
 
 +
Ans:- The battery model number is BR1225. The silkscreen error is known issue for Rev A and Rev A1 boards, and will be corrected in the next board revision. No damage will occur if you insert the RTC battery backwards.
 +
 
 +
==== 6. Where are the man pages? ====
 +
The manual pages consume roughly 300MB and were not installed in the default Angstrom image. If you want the manual pages, you can get them via the opkg command:
 +
# opkg update
 +
# opkg install man
 +
# opkg list | grep "\-doc"
 +
# opkg install <package>-doc
  
==== 5. The silkscreen for the RTC battery polarity is incorrect on the MinnowBoard. Will I damage the board if I insert the battery backwards?====
+
==== 7. Where can I find the Yocto Project BSP for the MinnowBoard? ====
  
Ans:- Yes, this is known issue for Rev A and Rev A1 boards. No damage will occur even if you insert the RTC battery backwards.
+
Ans:- At this time the MinnowBoard BSP is not part of the meta-intel repository, it's in its own repository, here: [http://git.yoctoproject.org/cgit/cgit.cgi/meta-minnow/ MinnowBoard BSP Git Repository]

Latest revision as of 17:34, 30 August 2013

1. Does Memtest work on the Minnowboard?

Ans:- No, not currently. The Memtest software is made for the traditional PC-BIOS environment whereas the Minnowboard has the new UEFI firmware. So, until a new version of Memtest is released for the UEFI, it won't work.

2. Does the MinnowBoard support SATA port multiplier functions?

Ans:- Yes, the SATA controller on the Minnowboard does have the hardware support for a SATA port multiplier but there is no software support for it at this time.

3. Will legacy BIOS support be available on the Minnowboard?

Ans:- No, it will not be available. However, it is possible for a third party to purchase a CSM (Compatibility Support Module) from one of the BIOS vendors (e.g, AMI, Phoenix) and add that as a UEFI module.

4. Can I access the user switches on the MinnowBoard via the sysfs interface in Linux?

Ans:- Yes.

Out of the box, the minnowboard_keys driver maps the GPIO buttons to keystrokes via the gpio-keys-polled driver. To access them via sysfs, you must unload the driver and export the GPIO lines:

# modprobe -r minnowboard_keys
# cd /sys/class/gpio
# echo 0 > export
# echo 1 > export
# echo 2 > export
# echo 3 > export
# cat gpio0/value
1

5. What model battery is used for the Real-Time Clock (RTC)? The silkscreen for the RTC battery polarity is incorrect on the MinnowBoard. Will I damage the board if I insert the battery backwards?

Ans:- The battery model number is BR1225. The silkscreen error is known issue for Rev A and Rev A1 boards, and will be corrected in the next board revision. No damage will occur if you insert the RTC battery backwards.

6. Where are the man pages?

The manual pages consume roughly 300MB and were not installed in the default Angstrom image. If you want the manual pages, you can get them via the opkg command:

# opkg update
# opkg install man
# opkg list | grep "\-doc"
# opkg install <package>-doc

7. Where can I find the Yocto Project BSP for the MinnowBoard?

Ans:- At this time the MinnowBoard BSP is not part of the meta-intel repository, it's in its own repository, here: MinnowBoard BSP Git Repository