Embedded module en tqmarzg2x TQMaRZG2x arm linux yocto YOCTO Linux \\ ===== Starterkit Interfaces and Functions =====

The MBaRZG2x provides the CAN interfaces CAN1 and CAN2. CAN FD can not be automatically configured by systemd machine units due to a limitation in the systemd version in Yocto Zeus,\\\ it can be enabled by the following commands in the shell: \\\


ip link set can0 down
ip link set can0 up type can bitrate 500000 sample-point 0.75 dbitrate 4000000 dsample-point 0.8 fd on
ip link set can1 down
ip link set can1 up type can bitrate 500000 sample-point 0.75 dbitrate 4000000 dsample-point 0.8 fd on

DIP switch S10 is used to configure the CAN interfaces CAN0 and CAN1. S1-1 S1-2 {{ :en:arm:tqmarzg2x:linux:yocto:how_to:tqmarzg2x_can_loopback.png?nolink&400 |}}

The STKRZG2X Starterkit provides one Gigabit Ethernet interfaces. In U-Boot eth0 is configured as default interface. The IP configuration can be done statically or by a DHCP server in the network. The Ethernet interface is activated and configured by systemd-network. The configuration file for the interface are located in /lib/systemd/network/ the configuration file can be altered to customize the default interface configuration. | eth0 | 10-eth0.network | The STKaRZG2x provides a HDMI interface, the interface is activated by default.

tqmarzg2x arm 4,7 6,7,8 TQ offers an optional LVDS Display kit for the STKRZG2x. An LVDS Display can be used by setting the corresponding device tree in the U-Boot environment. To allow reusage, the support for each display is separated in a separate dtsi fragment. To bring up the display the U-Boot environment has to be adapted accordingly. 1. Interrupt boot process in U-boot\\ 2. Set U-Boot environment variable fdt_file a specific command has to be used for the differnt types of the TQMaRZG2x:\\ **TQMaRZG2N** setenv fdt_file r8a774b1-tqmarzg2n_b-mbarzg2x-lvds-tm070jvhg33.dtb\\ **TQMaRZG2M-AA** setenv fdt_file r8a774a1-tqmarzg2m_aa-mbarzg2x-lvds-tm070jvhg33.dtb\\ **TQMaRZG2H** setenv fdt_file r8a774e1-tqmarzg2h_c-mbarzg2x-lvds-tm070jvhg33.dtb 3. Save the envrionment by executing the ''saveenv'' command


cat /sys/devices/platform/soc/e60b0000.i2c/i2c-7/7-001f/hwmon/hwmon0/temp1_input

**Read MBaRZG2x Temperature Sensor**


cat /sys/devices/platform/soc/e66d8000.i2c/i2c-4/4-001f/hwmon/hwmon1/temp1_input

**Read CPU internal Temperature Sensor**\\\ The RZ/G" CPU has an internal TMU that supports three thermal zones, all can be read by the commands below: **Thermal zone0**


cat /sys/devices/virtual/thermal/thermal_zone0/temp

**Thermal zone1**


cat /sys/devices/virtual/thermal/thermal_zone1/temp

**Thermal zone2**


cat /sys/devices/virtual/thermal/thermal_zone2/temp

The temperature is shown in millidegrees Celsius.

The MBaRZG2x has three user controllable LEDs, the behavior of these LEDs can be selected by several triggers. | V17 | user_led_1 | green | /sys/class/leds/user_led_1 | | V16 | user_led_2 | green | /sys/class/leds/user_led_2 | | V46 | user_led_3 | green | /sys/class/leds/user_led_3 | {{ :en:arm:tqmarzg2x:linux:yocto:how_to:mbarzg2x_user_led.png?nolink&400 |}} /sys/devices/platform/leds/leds/ user_led_1 /sys/class/leds/user_led_1/trigger ==== SSH Connection ====

STKaRZG2x