Changes between Version 43 and Version 44 of gsc

Timestamp:

01/28/2020 11:29:59 PM (5 years ago)

Author:

Ryan Erbstoesser

Comment:

update gsc v3 hwmon example

gsc

@@ -137 +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.
 
-A 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.
+A 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. The hwmon will be found in /sys/class/hwmon/hwmonx where x is a number. Check all hwmonx directories, starting with x=0 and then x=1 until identifying the correct hwmon where the values are contained. 
+
+Example ran on a GW62xx using Ubuntu Bionic:
+{{{
+cd /sys/class/hwmon/hwmon1
+for F in *;do echo -n $F: ;cat $F;done
+in0_input:2762
+in0_label:vdd_bat
+in10_input:1483
+in10_label:vdd_1p5
+in11_input:4998
+in11_label:vdd_an1
+in12_input:3258
+in12_label:vdd_gsc
+in1_input:491
+in1_label:fan_tach
+in2_input:15468
+in2_label:vdd_vin
+in3_input:4943
+in3_label:vdd_5p0
+in4_input:3398
+in4_label:vdd_3p3
+in5_input:2456
+in5_label:vdd_2p5
+in6_input:867
+in6_label:vdd_core
+in7_input:907
+in7_label:vdd_0p9
+in8_input:979
+in8_label:vdd_1p0
+in9_input:1189
+in9_label:vdd_1p2
+name:gsc_hwmon
+pwm1_auto_point1_pwm:127
+pwm1_auto_point1_temp:30000
+pwm1_auto_point2_pwm:153
+pwm1_auto_point2_temp:33000
+pwm1_auto_point3_pwm:178
+pwm1_auto_point3_temp:36000
+pwm1_auto_point4_pwm:204
+pwm1_auto_point4_temp:39000
+pwm1_auto_point5_pwm:229
+pwm1_auto_point5_temp:42000
+pwm1_auto_point6_pwm:255
+pwm1_auto_point6_temp:45000
+temp1_input:46000
+temp1_label:temp
+}}}
 
 Note that the standard sysfs entries for hwmon drivers are such that temperatures are in millidegrees celcius and voltages are in millivolts.