Changes between Version 34 and Version 35 of gsc


Ignore:
Timestamp:
05/16/2019 07:51:11 PM (6 years ago)
Author:
Tim Harvey
Comment:

added note about Vin measurement

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  • gsc

    v34 v35  
    135135|| ADC A31    =||= 0xA2 =||= Raw ADC value ^2^ ||
    136136 1. See [#fan fan] below
    137  2. Consult individual board hardware manual or the Linux device-tree for a description of what voltage rail this is and what voltage divider is applied in order to scale it. The Newport Linux kernel and BDK use information from the Linux Device-tree to scale and name these ADC's
     137 2. Consult individual board hardware manual or the Linux device-tree for a description of what voltage rail this is and what voltage divider is applied in order to scale it. The Newport Linux kernel and BDK use information from the Linux Device-tree to scale and name these ADC's. Note also that Vin (Board Input voltage) is evaluated at the board's primary power supply input and offset by an estimated diode drop and thus may differ from your actual power supply within a volt or so.
    138138
    139139A Linux 'Hardware Monitor' ({{{hwmon}}}) driver is available  which provides simple standard access to the above temperature/voltage registers via sysfs. The arguments have been given labels which define the source. The user can “cat” the label to determine the source.
    … …  
    173173|| fan0_point5 || 0x36           || Temperature   || Deg C/10    || Fan controller set point 5      ||
    174174
    175  * Note that the above descriptions are board-specific. Please see the board [http://www.gateworks.com/usermanuals Hardware User Manual] 'System Temperature and Voltage Monitor' section for details.
     175 * Note that the above descriptions are board-specific. Please see the board [http://www.gateworks.com/usermanuals Hardware User Manual] 'System Temperature and Voltage Monitor' section for details. Note also that Vin (Board Input voltage) is evaluated at the board's primary power supply input and offset by an estimated diode drop and thus may differ from your actual power supply within a volt or so.
    176176
    177177A Linux 'Hardware Monitor' ({{{hwmon}}}) driver is available in OpenWrt which provides simple standard access to the above temperature/voltage registers via sysfs.  The arguments have been given labels which define the source. The user can “cat” the label to determine the source. See the following examples listed below.