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fixed scaling issue for Raspberry Pi CPU temperature

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This commit is contained in:
Frederik Lindenaar
2019-03-03 20:47:38 +01:00
parent 2349fc1add
commit 28daf07d1a
1 changed files with 6 additions and 4 deletions
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10
plugins/check_temperature
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@@ -1,6 +1,6 @@
#! /usr/bin/env python #! /usr/bin/env python
# #
# check_temperature - Nagios temperature check for DS18B20 sensor on RaspberryPi # check_temperature - Nagios temperature check for RaspberryPi-connected sensors
# #
# Version 1.2, latest version, documentation and bugtracker available at: # Version 1.2, latest version, documentation and bugtracker available at:
# https://gitlab.lindenaar.net/scripts/nagios-plugins # https://gitlab.lindenaar.net/scripts/nagios-plugins
@@ -32,11 +32,13 @@ PROG_NAME=splitext(basename(__file__))[0]
PROG_VERSION=PROG_NAME + ' ' + VERSION PROG_VERSION=PROG_NAME + ' ' + VERSION
CPU_SENSOR_DEV = '/sys/class/thermal/thermal_zone0/temp' CPU_SENSOR_DEV = '/sys/class/thermal/thermal_zone0/temp'
CPU_SENSOR_SCALE=1000
I2C_MCP9808_CONFIG_ADDR=0x1 I2C_MCP9808_CONFIG_ADDR=0x1
I2C_MCP9808_CONFIG = [ 0x00, 0x00 ] # continuous conversion (power-up default) I2C_MCP9808_CONFIG = [ 0x00, 0x00 ] # continuous conversion (power-up default)
I2C_MCP9808_PRECISION_ADDR=0x08 I2C_MCP9808_PRECISION_ADDR=0x08
I2C_MCP9808_PRECISION=3 # 0=0.5, 1=0.25, 2=0.125, 3=0.0625 degr. C I2C_MCP9808_PRECISION=3 # 0=0.5, 1=0.25, 2=0.125, 3=0.0625 degr. C
I2C_MCP9808_TEMP_ADDR=0x05 I2C_MCP9808_TEMP_ADDR=0x05
I2C_MCP9808_SENSOR_SCALE=16
W1_SENSOR_DEV_DIR = '/sys/bus/w1/devices/' W1_SENSOR_DEV_DIR = '/sys/bus/w1/devices/'
W1_SENSOR_DEV_PREFIX = '28-' W1_SENSOR_DEV_PREFIX = '28-'
W1_SENSOR_DEV_SUFFIX = '/w1_slave' W1_SENSOR_DEV_SUFFIX = '/w1_slave'
@@ -116,9 +118,9 @@ def read_rpi_cpu_temp(args):
logger.debug('Temperature sensor data read from %s: %s', f.name, lines) logger.debug('Temperature sensor data read from %s: %s', f.name, lines)
temp_read = int(lines[0]) temp_read = int(lines[0])
temp = args.converter[0](temp_read) temp = args.converter[0](temp_read, CPU_SENSOR_SCALE)
logger.debug('Temperature sensor value %d is %.2f%s', temp_read, logger.debug('Temperature sensor value %d is %.2f%s', temp_read,
temp, args.converter[1]) temp, args.converter[1])
return temp, 1 return temp, 1
@@ -157,7 +159,7 @@ def read_i2c_mcp9808_temp(args):
if temp_read > 4095 : if temp_read > 4095 :
temp_read -= 8192 temp_read -= 8192
temp = args.converter[0](temp_read, 16) temp = args.converter[0](temp_read, I2C_MCP9808_SENSOR_SCALE)
logger.debug('Temperature sensor value %d is %.2f%s', logger.debug('Temperature sensor value %d is %.2f%s',
temp_read, temp, args.converter[1]) temp_read, temp, args.converter[1])
return temp, 1 return temp, 1