R-Car/Boards/Wheat

Introduction
This is the official Wiki for Renesas R-Car V2H Wheat board: entry-level development kit for surround view and ADAS applications. Refer to R-Car page for Renesas R-Car SoC family. V2H development kit is similar to R-Car H2-based ADAS Starter Kit Information on Renesas R-Car E2 SILK board and Renesas R-Car M2 Porter board can be found on a separate pages.

R-Car V2H Debug BOARD
For more information go to R-Car/Boards/Wheat:Hardware

R-Car V2H Evaluation BOARD

 * R-Car V2H SoC
 * ARM®Cortex-A15 Dual Core 1.0­GHz
 * Renesas image recognition core IMP-X4
 * GPU
 * PowerVR SGX531 (3D)
 * Graphics core (2D)
 * Rendering
 * Renesas Rendering core IMR-LSX3 × 6 channels
 * Renesas Rendering core IMR-LX3 × 1 channel
 * 1 GB DDR3 memory (dual channel)
 * Two flash memory chips
 * 1MB SPI
 * 64MB NOR
 * Video In
 * 4 Ether camera connections
 * 4 LVDS camera connections
 * Display unit (micro HDMI connections)
 * EthernetAVB
 * Storage connection
 * one microSD card slot
 * I2C connection
 * Can interface (2 channels)
 * Power supply: 12V
 * Dimensions: 180x155 mm

R-Car V2H Debug BOARD

 * 100Mbit Debug Ethernet
 * JTAG
 * Debug Console through CP2102 interface converter chip.
 * Dimensions: 75x75 mm

R-Car V2H SoC Documentation
TBD

Official Wheat board documentation
TBD

Where to buy
TBD

Tested peripherals
Cameras: IMI Gen4 minicube automotive camera (OV10635, MAX9271) Maxim OV10635 camera Wires

Quick Start How To
This sections describes steps that are necessary to run a "Hello, World!" application using Yocto build. Wayland are supported.

Connect Evaluation board and Debug Board
This section explains how to connect flexible cable between boards.
 * 1) Lift up stopper as depicted on figure 4-1,then insert cable between connector and stopper as shown in Figure 4-2.
 * 2) Push both ends of stopper to lock the cable.
 * 3) Finally, cable and connector are become as Figure 4-3.

Build Yocto image
Refer to Yocto for steps necessary for making a Yocto image.

Connect to serial console
Use a miniUSB cable to connect the PC to R-Car V2H Wheat Debug board. CN4 must be used on Wheat side. On Linux, CP2102 driver is included with kernel versions >=2.6.12. Windows driver and sources can be found on Silicon Labs website.

Serial settings are 38400 8N1. Any standard terminal emulator program can be used.

On Linux:

picocom
sudo picocom -b 38400 DEVICE replace DEVICE with the proper tty device name, for example /dev/ttyUSB0. Running dmesg | tail can help locating proper device. After the successful connection, picocom should display: picocom v1.7

port is       : /dev/ttyUSB0 flowcontrol   : none baudrate is   : 38400 parity is     : none databits are  : 8 escape is     : C-a local echo is : no noinit is      : no noreset is     : no nolock is      : no send_cmd is    : sz -vv receive_cmd is : rz -vv imap is       : omap is       : emap is       : crcrlf,delbs,

Terminal ready

Use Ctrl+A, Ctrl+Q to exit picocom.

minicom
sudo minicom -b 38400 -D DEVICE replace DEVICE with the proper tty device name, for example /dev/ttyUSB0. Running dmesg | tail can help locating proper device. After the successful connection, minicom should display: Welcome to minicom 2.6.2

OPTIONS: I18n Compiled on Aug 7 2013, 13:32:48. Port /dev/ttyUSB0

Press CTRL-A Z for help on special keys Use Ctrl+A, Q to exit minicom.

Power on
Use 12 V power supply with a 5.5 mm barrel plug.

Configure U-Boot to boot over TFTP + NFS or from a micro SD card
Refer to Yocto Wheat page for steps necessary for running Yocto.

Bootloader
At the moment only NOR variant of U-Boot is supported. QSPI/SPL U-Boot support will be added later Please set SW1[2:3:4] on the main board as all ON for boot-from-NOR mode, also set SW1 as ON on the debug board.

Flash U-Boot binary with the help of JTAG Emluator
  Download and extract it.   Flash uboot.bin to 0x40000 NOR FLASH address using JTAG Emulator (e.g. PARTNER-Jet emulator could be used).  

Updating U-Boot via TFTP
Follow these steps carefully to update U-Boot:   After you build Yocto image, copy u-boot.bin file from deploy build directory to tftp share directory [builduser]$ tree -p tmp/deploy/images/wheat/u-boot* ├── [lrwxrwxrwx] u-boot.bin -> u-boot-wheat-v2015.07+gitAUTOINC+33711bdd4a-r0.bin ├── [lrwxrwxrwx] u-boot.srec -> u-boot-wheat-v2015.07+gitAUTOINC+33711bdd4a-r0.srec ├── [lrwxrwxrwx] u-boot-wheat.bin -> u-boot-wheat-v2015.07+gitAUTOINC+33711bdd4a-r0.bin ├── [lrwxrwxrwx] u-boot-wheat.srec -> u-boot-wheat-v2015.07+gitAUTOINC+33711bdd4a-r0.srec ├── [-rwxr-xr-x] u-boot-wheat-v2015.07+gitAUTOINC+33711bdd4a-r0.bin ├── [-rw-r--r--] u-boot-wheat-v2015.07+gitAUTOINC+33711bdd4a-r0.srec

  Connect to serial console over microUSB. If using picocom, start it with the following command line options: sudo picocom -b BAUDRATE --send-cmd "ascii-xfr -vvs" DEVICE Refer to "Connect to serial console" section for more information.   You should see the following output in the terminal: CPU: Renesas Electronics R8A7792 rev 1.1 Board: Wheat DRAM: 1 GiB Flash: 64 MiB MMC:  sh-sdhi: 0 In:   serial_sh Out:  serial_sh Err:  serial_sh Net:  smc911x-0   Load U-boot with the following commands => tftpboot 0x41000000 u-boot.bin smc911x: MAC 00:de:ad:be:af:00 smc911x: detected LAN89218 controller smc911x: phy initialized smc911x: MAC 00:de:ad:be:af:00 Using smc911x-0 device TFTP from server 192.168.1.193; our IP address is 192.168.1.177 Filename 'u-boot.bin'. Load address: 0x41000000 Loading: ######################################## 881.8 KiB/s done Bytes transferred = 200604 (30f9c hex) smc911x: MAC 00:de:ad:be:af:00   Flash u-boot with following commands => protect off all Un-Protect Flash Bank # 1 => erase 0 +40000 .. done Erased 2 sectors => cp.b 0x41000000 0 0x40000 Copy to Flash... 9....8....7....6....5....4....3....2....1....done </li> </ol>

FAQ
TBD

Known Issues
TBD