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.
Hardware
R-Car V2H Evaluation BOARD
R-Car V2H Debug BOARD
For more information go to R-Car/Boards/Wheat:Hardware
Hardware Features
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 IMI Gen4 minicube automotive camera (OV10635, MAX9271)
maxim Maxim OV10635 camera
Fakra 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.
- Lift up stopper as depicted on figure 4-1,then insert cable between connector and stopper as shown in Figure 4-2.
- Push both ends of stopper to lock the cable.
- 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 File:Uboot-wheat.zip 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
FAQ
TBD
Known Issues
TBD
