I am seeing a scenario where in if the TIMEZONE environment variable value is set to nothing i.e. putenv "TIMEZONE=" the hardware clock is +1 to software clock.Pasted below the results displayed:
-> envShow
(global environment)
0: TSC_TIME_FROM_RESET=420150.971529 seconds
1: RTAC_OS_LABEL=RTAC9_VXOS2.0.2
2: RTAC_OS_VERSION=Wind River Systems - vxWorks 6.8.3
3: RTAC_OS_DATE=May 6 2014, 17:00:30
4: BIOS_VENDOR=American Megatrends Inc.
5: BIOS_ID1=080015
6: BIOS_DATE=01/23/2014
7: BIOS_VERSION=125WXQ13
8: BIOS_ID2=**** PCE-5125W BIOS Q1.10 (01/
9: CPU_FREQUENCY=3066000000
10: BOARD_TYPE=GITANEMEM
11: IP_BOARD_TYPE=DIPB
12: ETHERNET_BOARD=GEI
13: FCIB_BOARD=FCIB
14: RTAC_MEMORY_SIZE=1913
15: ATA_SERIAL_NUMBER= Z3TKB9KD
16: ATA_REVISION_NUMBER=KC45
17: ATA_MODEL_NUMBER=ST250DM000-1BD141
18: NETWORK_IF_NAME=gei0
19: SUB_BOARD_TYPE=GITANE9
20: GITANE_FPGA_LEN=166965
21: GITANE_FWFILE=gitane9.hex
22: GE_PCI_DEVICE_ID=21555
23: GE_PCI_VENDOR_ID=6070
24: GITANE_PCI_FW=Rev.57
25: LOAD_CONFIG_FILE=1
26: SET_IP_ADDRESS=1
27: SUBNET_MASK=0xffff0000
28: BROADCAST_ADDRESS=3.204.255.255
29: LOAD_APPLICATIONS_FILE=1
30: TIMEZONE=
31: GMT::0:0:0
32: TIMEZONE=CSTCDT::360:0:0
value = 0 = 0x0
->
-> printLocalTime
Current Software time is: MON JAN 19 14:01:51 2015
value = 6532128 = 0x63ac20 = ' ' = std::cout
-> printRTTime
Current Hardware time is: MON JAN 19 15:01:53 2015
value = 6532128 = 0x63ac20 = ' ' = std::cout
But after reboot I ma seeing both hardware and software clock are same even though I am setting the TIMEZONE environment variable to nothing. Below is the output I got after reboot:
-> envShow
(global environment)
0: TSC_TIME_FROM_RESET=853965.694892 seconds
1: RTAC_OS_LABEL=RTAC9_VXOS2.0.2
2: RTAC_OS_VERSION=Wind River Systems - vxWorks 6.8.3
3: RTAC_OS_DATE=May 6 2014, 17:00:30
4: BIOS_VENDOR=American Megatrends Inc.
5: BIOS_ID1=080015
6: BIOS_DATE=01/23/2014
7: BIOS_VERSION=125WXQ13
8: BIOS_ID2=**** PCE-5125W BIOS Q1.10 (01/
9: CPU_FREQUENCY=3066000000
10: BOARD_TYPE=GITANEMEM
11: IP_BOARD_TYPE=DIPB
12: ETHERNET_BOARD=GEI
13: FCIB_BOARD=FCIB
14: RTAC_MEMORY_SIZE=1913
15: ATA_SERIAL_NUMBER= Z3TKB9KD
16: ATA_REVISION_NUMBER=KC45
17: ATA_MODEL_NUMBER=ST250DM000-1BD141
18: NETWORK_IF_NAME=gei0
19: SUB_BOARD_TYPE=GITANE9
20: GITANE_FPGA_LEN=166965
21: GITANE_FWFILE=gitane9.hex
22: GE_PCI_DEVICE_ID=21555
23: GE_PCI_VENDOR_ID=6070
24: GITANE_PCI_FW=Rev.57
25: LOAD_CONFIG_FILE=1
26: SUBNET_MASK=0xfffffc00
27: SET_IP_ADDRESS=1
28: BROADCAST_ADDRESS=3.204.31.255
29: LOAD_APPLICATIONS_FILE=1
30: TIMEZONE=
value = 0 = 0x0
-> putenv "TIMEZONE="
value = 0 = 0x0
-> printRTTime
Current Hardware time is: TUE JAN 20 19:54:45 2015
value = 6532128 = 0x63ac20 = ' ' = std::cout
-> printLocalTime
Current Software time is: TUE JAN 20 19:54:51 2015
value = 6532128 = 0x63ac20 = ' ' = std::cout
why is there a discrepancy in hardware clock for the same value set for TIMEZONE environment variable.
why is the hardware clock considering the TIMEZONE as it should display UTC.
Any suggestions in this reagrd will be of great help.
Thanks,
Sneha