DHCOR STM32MP1 Linux: Difference between revisions

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Revision as of 09:03, 22 July 2020


CAUTION! THIS PAGE IS UNDER CONSTRUCTION!


Linux Userspace Commands

Unsing the internal RTC

Read out the current date
# date
Set a specific system time
# date -s "2020-01-30 10:00:00"
Save the current system time to the RTC of the STM32MP1
# hwclock -w
When you allready have stored a date on the RTC and you want to read it out, use the next command. This command only gives back the time, but does not synchronize it with the system time. This is done in the next step.
# hwclock -r
The system time can be synchronised to the RTC by this command:
# ??????????????????




Kernel Userspace Interfaces to Access Hardware

Serial (UART) Interfaces

DHCOM (FF) UART 1 /dev/ttymxc0
DHCOM (BT) UART 2 /dev/ttymxc4
DHCOM (STD) UART 3 /dev/ttymxc3



Test Linux Name Hardware Name
A2 B2 B3
A3 B3 C3


Set a specific system time
# date -s "2020-01-30 10:00:00"
Save the current system time to the RTC of the STM32MP1
# hwclock -w
When you allready have stored a date on the RTC and you want to read it out, use the next command. This command only gives back the time, but does not synchronize it with the system time. This is done in the next step.
# hwclock -r
The system time can be synchronised to the RTC by this command:
# ??????????????????