DHCOM STM32MP1 Linux: Difference between revisions
Ageisreiter (talk | contribs) |
Pzimmermann (talk | contribs) (Added "How to build the Linux Kernel") |
||
| Line 1: | Line 1: | ||
== Linux virtual machine for development == | |||
:* Please have a look at: '''[[Virtual Machine for Application Development]]''' | |||
== Linux Kernel == | |||
<!-- === Sources: Look at page [[DHCOM iMX6ULL-D2#BSP Sources|i.MX6ULL BSP Sources]] === --> | |||
=== How to build a Kernel === | |||
{| class="wikitable" align="center" | style="width: 98%; background: #f3f3f3;" valign="top" | | |||
| | |||
Get sources from Github | |||
{| class="wikitable" style="width: 100%; color: #000000; background: #ffffff;" | | |||
| | |||
1. Start the Console on Linux<br/> | |||
2. <tt>''git clone https://github.com/dh-electronics/linux-stm32mp1.git --branch dev/5.4.69_dhsom''</tt><br/> | |||
3. <tt>''cd linux-stm32mp1''</tt> | |||
|} | |||
Configure and build the Device Tree + Kernel | |||
{| class="wikitable" style="width: 100%; color: #000000; background: #ffffff;" | | |||
| | |||
4. <tt>''ARCH=arm CROSS_COMPILE=/opt/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/bin/arm-linux-gnueabihf- make stm32mp1_dhsom_defconfig''</tt><br/> | |||
5. <tt>''ARCH=arm CROSS_COMPILE=/opt/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/bin/arm-linux-gnueabihf- make menuconfig''</tt> (optional: If you want to add/remove Kernel features)<br/> | |||
6. <tt>''ARCH=arm CROSS_COMPILE=/opt/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/bin/arm-linux-gnueabihf- make dtbs''</tt><br/> | |||
7. <tt>''ARCH=arm CROSS_COMPILE=/opt/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/bin/arm-linux-gnueabihf- make zImage</tt> | |||
|} | |||
Create the FIT-image with our script ([https://www.dropbox.com/s/0jtyget66cxgq30/dh-create-fitimage_1.0_all.deb?raw=1 Download link]) | |||
{| class="wikitable" style="width: 100%; color: #000000; background: #ffffff;" | | |||
|- | |||
| '''Interactive mode for selecting device trees''' | |||
| '''Device trees are set as parameter''' | |||
|- | |||
| | |||
8. <tt>''create_fitimage''</tt><br/> | |||
Enter the numbers (space seperated) of the device trees to include (e.g. if you want to include the device tree for the PDK2 include the number of <tt>''./arch/arm/boot/dts/stm32mp157c-dhcom-pdk2.dtb''</tt> (usually 3).<br/> | |||
Enter the numbers (space seperated) of the device trees overlays to include (e.g. for the PDK2 enter the files which contain <tt>''PDK2''</tt> (usually 8 9 10 11 12 13 14). | |||
| | |||
(Example is for the PDK2) <br> | |||
8. <tt>''create_fitimage --dtb ./arch/arm/boot/dts/stm32mp157c-dhcom-pdk2.dtb --dtbo ./arch/arm/boot/dts/stm32mp157c-dhcom-pdk2-overlay-460-200-x11.dtbo;./arch/arm/boot/dts/stm32mp157c-dhcom-pdk2-overlay-497-200-x12.dtbo;./arch/arm/boot/dts/stm32mp157c-dhcom-pdk2-overlay-505-200-x12-ch101olhlwh.dtbo;./arch/arm/boot/dts/stm32mp157c-dhcom-pdk2-overlay-531-100-x21.dtbo;./arch/arm/boot/dts/stm32mp157c-dhcom-pdk2-overlay-531-100-x22.dtbo;./arch/arm/boot/dts/stm32mp157c-dhcom-pdk2-overlay-560-200-x12.dtbo;./arch/arm/boot/dts/stm32mp157c-dhcom-pdk2-overlay-638-100-x12-rpi7inch.dtbo''</tt> | |||
|} | |||
|} | |||
== Kernel Userspace Interfaces to Access Hardware == | == Kernel Userspace Interfaces to Access Hardware == | ||
Revision as of 14:13, 22 October 2020
Linux virtual machine for development
- Please have a look at: Virtual Machine for Application Development
Linux Kernel
How to build a Kernel
|
Get sources from Github
Configure and build the Device Tree + Kernel
Create the FIT-image with our script (Download link)
|
Kernel Userspace Interfaces to Access Hardware
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
CAN interface
- Setup CAN interface with baudrate 500kbit/sec.
ip link set can0 up type can bitrate 500000
- Start to listen on CAN port
candump can0
- Send test message
cansend can0 100#11.2233.44556677.88
- Deinitialize CAN port
ip link set can0 down
