DHCOR STM32MP1 Linux: Difference between revisions

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:'''Unsing the internal RTC'''
:'''Unsing the internal RTC'''
The internal RTC of the STM32MP1 is reachable via the following commands:
:At first the time needs to be set:
:{| class="wikitable" style="width: 400px"
:{| class="wikitable" style="width: 500px"
  ||Read||# hwclock -w
  ||Display current time||''# date''</tt>
|-
||Change time ||''# date -s "2020-01-30 10:00:00"''</tt>
  |}
  |}
:Next save the current time to the internal RTC:
:{| class="wikitable" style="width: 500px"
||Save the current time to the hardware clock||''# hwclock -w''
|}





Revision as of 08:52, 22 July 2020

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Linux Userspace Commands

Unsing the internal RTC
At first the time needs to be set:
Display current time # date
Change time # date -s "2020-01-30 10:00:00"
Next save the current time to the internal RTC:
Save the current time to the hardware clock # hwclock -w





RS-485 on picoITX

RS-485 device
DHCOM UART 2 /dev/ttySTM2
Compilation on target
gcc tty_rs485_test.c -o tty_rs485_test
Set tty device to raw mode
stty -F /dev/ttySTM2 115200 cs8 raw -echo
Send data with demo program
./tty_rs485_test /dev/ttySTM2
Receive data with demo program
./tty_rs485_test /dev/ttySTM2
Download example source code