Premier Farnell Embest SBC-PH8700 User manual

SBC-PH8700 User Manual
Embest Technology Co. Ltd | http://www.embest-tech.com 1
User Manual
[SBC-PH8700]

SBC-PH8700 User Manual
Embest Technology Co. Ltd | http://www.embest-tech.com 2
Revision History
Rev.
Note
Author
20160902
Initial
Sandy
20160927
Rev01 Release
Sandy

SBC-PH8700 User Manual
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Catalog
Revision History ........................................................................................................................................................... 2
Catalog ......................................................................................................................................................................... 3
Release Note................................................................................................................................................................ 5
1. Images Version............................................................................................................................................. 5
2. Feature List .................................................................................................................................................. 5
3. Known Issues ............................................................................................................................................... 6
Chapter 1 Quick Start ............................................................................................................................................... 7
1.1 Burn the System Images to the SD Card .................................................................................................. 7
1.2 System Boot from SD Card....................................................................................................................... 8
1.3 System Boot from EMMC......................................................................................................................... 9
Chapter 2 Function test .......................................................................................................................................... 10
2.1 LED ......................................................................................................................................................... 10
2.2 RTC ......................................................................................................................................................... 10
2.3 EEPROM ................................................................................................................................................. 11
2.4 EMMC .................................................................................................................................................... 12
2.5 ADC ........................................................................................................................................................ 12
2.6 HDMI...................................................................................................................................................... 13
2.7 HDMI Audio ........................................................................................................................................... 13
2.8 LCD......................................................................................................................................................... 13
2.9 Backlight................................................................................................................................................. 13
2.10 Touchscreen........................................................................................................................................... 13
2.11 Serial ...................................................................................................................................................... 14
2.11.1 UART1 ........................................................................................................................................ 14
2.11.2 UART2 ........................................................................................................................................ 14
2.11.3 UART4 ........................................................................................................................................ 14
2.12 RS485 ..................................................................................................................................................... 14
2.12.1 RS485-2 and RS485-3................................................................................................................. 14
2.13 CAN ........................................................................................................................................................ 15
2.14 Network ................................................................................................................................................. 15
2.15 USB......................................................................................................................................................... 16
2.15.1 USB Host .................................................................................................................................... 16
2.15.2 OTG Test ..................................................................................................................................... 16

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Chapter 3 System Compilation ............................................................................................................................... 18
3.1 Building Development Environment...................................................................................................... 18
3.2 Compiling U-Boot................................................................................................................................... 18
3.2.1 Get the U-Boot Source Code...................................................................................................... 18
3.2.2 Compile and Burn the Images to SD Card.................................................................................. 18
3.2.3 Compile and Burn the Images to EMMC.................................................................................... 18
3.3 Compiling Kernel.................................................................................................................................... 19
3.3.1 Get Kernel Source Code ............................................................................................................. 19
3.3.2 Compile and Burn the Images to SD Card.................................................................................. 19

SBC-PH8700 User Manual
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Release Note
1. Images Version
SBC-PH8700_Shipment_Image_SDcard_Rev01.img
SBC-PH8700_Shipment_Image_EMMC_Rev01.img
2. Feature List
Feature List
SBC-PH8700
Schematic
Page#
On-Chip
Peripherals
On-Board
Peripherals
Detail Functions(existing)
u-boot version
2015.09
Supports kernel boot
kernel version
4.1.6
Supports all below functionality
Filesystem
Debian
Default root file system used by
debian
CPU
PH8700-U5
AM3358_ZCZ
Null
DDRAM
PH8700-P8-U12
DDR
MT41K256M16HA-125
Can access read write and run
code
PMIC
PH8700-P3-U2
I2C0
TPS65217
Null
eMMC
PH8700-P9-U13
MMC1
MTFC4GLDEA
Can access read write and boot
SDCard
Null
MicroSD_(TF)
SPH1800-P6-TF1
MMC0
Null
Can access read write and boot
External-RTC
SPH1800-P9-U55
I2C0
RX-8025TUB
can read write and keep time off
power
Integrited-RTC
PH8800-u11
RTC
Null
can read write and keep time off
power
LEDs
PH8800-p10-D3/D
4
gpio
Null
System can control LED to light or
not
LCD
SPH1800-P9-J9
RGB
Null
Can show picture on the screen
Backlight
SPH1800-P9-J9
PWM
Null
System can control the LCD
backlight
TouchScreen
SPH1800-P9-J9
ADC-TSC
Null
System use touchscreen
EEPROM
PH8800-p8-u14
MMC1
MTFC4GACAAAM-4M
IT
Can access read write
CAN
SPH1800-p8-J61
CAN1
MC33901WEF
System can send and receive data

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between two board
UART-0
SPH1800-p7-CN4
UART0
NUll
System can send and receive data
in loopback mode
UART-1
SPH1800-p7-J4
UART5
MAX3232CUE+
System can send and receive data
in loopback mode
UART-2
SPH1800-p13-J58
UART3
Null
System can send and receive data
in loopback mode
UART-4
SPH1800-p13-J58
UART1
MAX3232CUE+
System can send and receive data
in loopback mode
RS485-2
SPH1800-p8-u5
SPI0
SC16IS752IPW
System can send and receive data
between two board
RS485-3
SPH1800-p8-u5
SPI0
SC16IS752IPW
System can send and receive data
between two board
USB-Host
SPH1800-p11-p3
USB1
Null
Can recognize U disk by USB host
USB-OTG
SPH1800-p11-j13
USB0
Null
Can recognize U disk in host
mode, and can work as usb
ethernet in device mode
Ethernet-1
PH8800-P9-U9
RGMII1
KSZ9031RNXIA
Can ping the server
Ethernet-2
SPH1800-P12-J17
RGMII2
AR8035
Can ping the server
HDMI
SPH1800-P10-U34
I2C0
TDA19988BHN/C1,551
Can show picture on the screen
Audio
SPH1800-P10-U34
I2C0
TDA19988BHN/C1,551
can play wav
3. Known Issues
Known issue List
Detail
LCD
4.3 inch screen turn white for a while in boot
7 inch screen blink several times when boot
HDMI
Not shown correctly
Not support Sony HDMI display

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Chapter 1 Quick Start
1.1 Burn the System Images to the SD Card
Firstly, you should prepare a SD card, which is no less than 2GB.
Then, download and install “Win32 Disk Imager”from https://sourceforge.net/projects/win32diskimager/.
Select the system image: SBC-PH8700_Shipment_Image_SDcard_Rev01.img:
Click “Write”button to burn the images:

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1.2 System Boot from SD Card
Install the Serial Communication software (e.g. SecureCRT), select the corresponding port number, baudrate
as 115200, data bits as 8, stop bits as 1, parity as none.
Connect the DEBUG interface (CN4) to the serial interface of PC with a USB to TTL module.
Insert the MicroSD card into the card slot (TF1).
Press S3 button, then powered the board with a 5V, 2A power. Release S3 after the power reset.
Wait for the system boot up, then the serial output will show the following information:
Enter username and password as “root”to login;

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1.3 System Boot from EMMC
Copy the SBC-PH8700_Shipment_Image_EMMC_Rev01.img to a U-disk.
Refer to 1.2, boot the system from SD Card, then plug the U-disk to P3;
Execute the following instructions on the serial terminal:
root@embest:~# ls /dev/sd*
/dev/sda /dev/sda1
root@embest:~# mount /dev/sda1 /mnt/
root@embest:~# dd if=/mnt/SBC-PH8700_Shipment_Image_EMMC_Rev01.img of=/dev/mmcblk1
Note: Burn the EMMC takes a long time, please wait patiently.
Then power reset the board to boot from EMMC (Don’t press S3 anymore).

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Chapter 2 Function test
First of all, please refer to Chapter 1.1 and boot up the system. Then test the functions according to the following
guidance.
2.1 LED
User can control LED (D2, D3) indicators on SOM-PH8700 Board. After the system boot up, please execute the
following instructions in serial terminal to implement the test; (D2 is attached to user_leds_d2, D3 to
user_leds_d3)
Light out LED:
root@embest:~# echo 0 > /sys/class/leds/user_leds_d2/brightness
root@embest:~# echo 0 > /sys/class/leds/user_leds_d3/brightness
Light up LED:
root@embest:~# echo 1 > /sys/class/leds/user_leds_d2/brightness
root@embest:~# echo 1 > /sys/class/leds/user_leds_d3/brightness
2.2 RTC
Execute the following instructions on the serial terminal:
Check the current system time:
root@embest:~# date
Sat Jan 1 00:02:07 UTC 2000
Set current time as 10:46, March 9, 2016
root@embest:~# date 030910462016
Wed Mar 9 10:46:00 UTC 2016
Write system clock into RTC:
root@embest:~# hwclock –w
Read RTC value:
root@embest:~# hwclock
Wed 09 Mar 2016 10:46:23 AM UTC -0.432561 seconds
The above information indicates that the hardware clock-RTC-has been set to March 9, 2016, so the system clock
is saved in the hardware clock.
Reboot the system and check the current system time:
root@embest:~# date
Wed Mar 9 10:46:45 UTC 2016

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2.3 EEPROM
Execute the following instructions on the serial terminal:
root@embest:~# ./eeprom_test
data will write to EEPROM at 0x400
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f
90 91 92 93 94 95 96 97 98 99 9a 9b 9c 9d 9e 9f
a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 aa ab ac ad ae af
b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 ba bb bc bd be bf
c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 ca cb cc cd ce cf
d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 da db dc dd de df
e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef
f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff
data read from EEPROM at 0x400
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f
90 91 92 93 94 95 96 97 98 99 9a 9b 9c 9d 9e 9f
a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 aa ab ac ad ae af
b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 ba bb bc bd be bf
c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 ca cb cc cd ce cf
d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 da db dc dd de df
e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef

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f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff
If write and read data are the same, the test passes.
2.4 EMMC
Execute the following instructions on the serial terminal:
root@embest:~# touch emmc_read emmc_write
Modify emmc_write value:
root@embest:~# vi emmc_write
E.g. Write “emmc write test”into the system
Write emmc instructions:
root@embest:~# dd if=emmc_write of=/dev/mmcblk1
[ 68.358218] mmcblk1: p1 p2
0+1 records in
0+1 records out
16 bytes (16 B) copied, 0.0273767 s, 0.6 kB/s
Read emmc instructions:
root@embest:~# dd if=/dev/mmcblk1 of=emmc_read bs=1K count=10
10+0 records in
10+0 records out
10240 bytes (10 kB) copied, 0.00800079 s, 1.3 MB/s
Check emmc_read value:
root@embest:~# cat emmc_read
emmc write test
Test passes;
2.5 ADC
Execute the following instructions on the serial terminal to get the sampling values returned:
root@embest:~# cat /sys/bus/platform/devices/TI-am335x-adc/iio\:device0/in_voltage4_raw
571
root@embest:~# cat /sys/bus/platform/devices/TI-am335x-adc/iio\:device0/in_voltage5_raw
863
root@embest:~# cat /sys/bus/platform/devices/TI-am335x-adc/iio\:device0/in_voltage6_raw
863
root@embest:~# cat /sys/bus/platform/devices/TI-am335x-adc/iio\:device0/in_voltage7_raw
879

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2.6 HDMI
Open the uEnv.txt file from SD card, modify fdtfile=embest-SOM_PH8700-BB_SPH1800-HDMI.dtb
Connect the display with HDMI cable, then reboot the system;
2.7 HDMI Audio
Connect the HDMI device, execute the following instruction to play the default audio file:
root@embest:~# aplay /boot/firmware/audio_sample.wav
Playing WAVE '/boot/firmware/audio_sample.wav' : Signed 16 bit Little Endian, Rate 22050 Hz, Stereo
2.8 LCD
4.3” LCD:
Open the uEnv.txt file from SD card, modify fdtfile= embest-SOM_PH8700-BB_SPH1800-4.3inch_LCD.dtb
Connect the screen module to J9, then reboot the system.
7” LCD:
Open the uEnv.txt file from SD card, modify fdtfile= embest-SOM_PH8700-BB_SPH1800-7inch_LCD.dtb
Connect the screen module to J9, then reboot the system.
2.9 Backlight
The backlight brightness has a range from 1 to 8, in which 8 means highest brightness, 1 means lowest.
Execute the following instructions on the serial terminal to implement the backlight test:
The darkest:
root@embest:~# echo 1 > /sys/class/backlight/backlight/brightness
The brightest:
root@embest:~# echo 8 > /sys/class/backlight/backlight/brightness
2.10 Touchscreen
Connect the screen module to J9, execute the following instructions on the serial terminal to implement the touch
screen calibration program:
root@embest:~# ts_calibrate
Following the notes on LCD, click the “+”icon for five times to complete the calibration.

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2.11 Serial
The board has 4 serial interfaces, while the UART0 (CN4) is the debug interface. Execute the following instructions
on the serial terminal to test UART 1, UART2 and UART4:
2.11.1UART1
Short Pin 2 and 3 in J4:
root@embest:~# ./uart_test -d /dev/ttyS1 -b 115200
/dev/ttyS1 SEND: 1234567890
/dev/ttyS1 RECV 10 total
/dev/ttyS1 RECV: 1234567890
2.11.2UART2
Short Pin 16 and 17 in J58:
root@embest:~# ./uart_test -d /dev/ttyS2 -b 115200
/dev/ttyS2 SEND: 1234567890
/dev/ttyS2 RECV 10 total
/dev/ttyS2 RECV: 1234567890
2.11.3UART4
Short Pin 14 and 15 in J58:
root@embest:~# ./uart_test -d /dev/ttyS4 -b 115200
/dev/ttyS2 SEND: 1234567890
/dev/ttyS2 RECV 10 total
/dev/ttyS2 RECV: 1234567890
Note: Press “CTRL+C”to exit the serial test.
2.12 RS485
2.12.1RS485-2 and RS485-3
Short connect Pin 7 and 9, Pin 8 and 10 in J62 (That is RS485-A3 to RS485-A2, RS485-B3 to RS485-B2):
Execute the following instructions on the serial terminal (in the background):
root@embest:~# ./uart_test -d /dev/ttySC1 -b 9600 -s "a" &
Then enter the following:
root@embest:~# ./uart_test -d /dev/ttySC0 -b 9600 -s "c"
/dev/ttySC0 SEND: c
/dev/ttySC1 RECV 1 total
/dev/ttySC1 RECV: c

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/dev/ttySC1 SEND: a
/dev/ttySC0 RECV 1 total
/dev/ttySC0 RECV: a
TtySC0, ttySC1 will send data separately, receive data correctly;
2.13 CAN
Test method as below:
Execute the following instructions on the serial terminal:
root@embest:~# ip link set can0 type can bitrate 50000 loopback on
root@embest:~# ip link set can0 up
[ 1080.870648] c_can_platform 481cc000.can can0: setting BTR=1c1d BRPE=0000
Execute the following instructions to receive data packet in the background:
root@embest:~# candump can0 &
Execute the following instructions to send data packet:
root@embest:~# cansend can0 123#11223344556677
can0 123 [7] 11 22 33 44 55 66 77
can0 123 [7] 11 22 33 44 55 66 77
Shut off the device:
root@embest:~# ip link set can0 down
read: Network is down
root@embest:~# [ 1280.241265] c_can_platform 481cc000.can can0: setting BTR=1c1d BRPE=0000
2.14 Network
Connect eth cable to J17, execute the following instructions on the serial terminal:
Configure the IP address:
root@embest:~# ifconfig eth0 192.168.2.64
Testing network interface:
root@embest:~# ping 192.168.2.1
To test eth1, you need to disconnect the cable with J17, connect the cable with the external ETH module, then use
the above instructions to test. (Change eth0 to eth1).

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2.15 USB
2.15.1USB Host
Insert the U disk to the USB Host interface (P3); serial terminal will display the disk information:
[ 749.839750] usb 2-1: USB disconnect, device number 2
[ 753.033776] usb 2-1: new high-speed USB device number 3 using musb-hdrc
[ 753.174244] usb 2-1: New USB device found, idVendor=0781, idProduct=5530
[ 753.181112] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 753.189783] usb 2-1: Product: Cruzer
[ 753.193454] usb 2-1: Manufacturer: SanDisk
[ 753.198779] usb 2-1: SerialNumber: 20060876900F3042FBB5
[ 753.207733] usb-storage 2-1:1.0: USB Mass Storage device detected
[ 753.218483] scsi host1: usb-storage 2-1:1.0
[ 754.224988] scsi 1:0:0:0: Direct-Access SanDisk Cruzer 1.26 PQ: 0 ANSI: 5
[ 754.248822] sd 1:0:0:0: [sda] 7821312 512-byte logical blocks: (4.00 GB/3.72 GiB)
[ 754.261207] sd 1:0:0:0: [sda] Write Protect is off
[ 754.269365] sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 754.291840] sda:
[ 754.300985] sd 1:0:0:0: [sda] Attached SCSI removable disk
Execute the following instructions on the serial terminal:
root@embest:~# ls /dev/sd*
/dev/sda
Storage nodes locate under /dev;
2.15.2OTG Test
2.15.2.1 1. MASTER DEVICE
Connect U disk to J13 with an OTG cable:
[ 777.452379] usb 2-1: USB disconnect, device number 3
[ 828.653766] usb 1-1: new high-speed USB device number 2 using musb-hdrc
[ 828.794284] usb 1-1: New USB device found, idVendor=0781, idProduct=5530
[ 828.801145] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 828.811356] usb 1-1: Product: Cruzer

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[ 828.817391] usb 1-1: Manufacturer: SanDisk
[ 828.823054] usb 1-1: SerialNumber: 20060876900F3042FBB5
[ 828.834098] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 828.848209] scsi host2: usb-storage 1-1:1.0
[ 829.854966] scsi 2:0:0:0: Direct-Access SanDisk Cruzer 1.26 PQ: 0 ANSI: 5
[ 829.879600] sd 2:0:0:0: [sda] 7821312 512-byte logical blocks: (4.00 GB/3.72 GiB)
[ 829.893393] sd 2:0:0:0: [sda] Write Protect is off
[ 829.902869] sd 2:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 829.927923] sda:
[ 829.939997] sd 2:0:0:0: [sda] Attached SCSI removable disk
Execute the following instructions on the serial terminal:
root@embest:~# ls /dev/sd*
/dev/sda
Storage nodes locate under /dev;
2.15.2.2 2. SLAVE DEVICE
Connect J13 to PC, open the device manager, and check if the following device is recognized:

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Chapter 3 System Compilation
3.1 Building Development Environment
Copy the release folder to Linux’s $HOME directory (extract the rar files), while the compilation tool
gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf under path $HOME/S5_Tool. Use the following instructions to
extract it:
$xz -d gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf.tar.xz
$tar –xvf gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf.tar
Import the environment variable:
$export
CROSS_COMPILE=$HOME/S5_Tool/gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabi
hf-
$export ARCH=arm
3.2 Compiling U-Boot
3.2.1 Get the U-Boot Source Code
U-boot source code locates under path $HOME/S4_Sourcecode/, extract the u-boot*.tar.gz:
$ cd $HOME/S4_Sourcecode/
$ tar -zxvf u-boot*.tar.gz
3.2.2 Compile and Burn the Images to SD Card
$ cd $HOME/S4_Sourcecode/u-boot
$ make distclean
$make som_ph8700_defconfig
$make
When the compilation finished, it will generate a MLO and u-boot.img under path $HOME/S4_Sourcecode/u-boot,
copy the two files to SD card;
3.2.3 Compile and Burn the Images to EMMC
$ cd $HOME/S4_Sourcecode/u-boot
$ make distclean
$make som_ph8700_emmcboot_defconfig
$make
When the compilation finished, it will generate a MLO and u-boot.img under path $HOME/S4_Sourcecode/u-boot,

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burn the two files to EMMC.
3.3 Compiling Kernel
3.3.1 Get Kernel Source Code
The source code of the kernel locate under $HOME/S4_Sourcecode/, extract the linux*.tar.gz
$ tar -zxvf linux*.tar.gz
3.3.2 Compile and Burn the Images to SD Card
$ cd $HOME/S4_Sourcecode/linux
$ make distclean
$ make embest_ti_8700_defconfig
$ make
When the compilation finished, it will generate
-zImage under $HOME/S4_Sourcecode/linux/arch/arm/boot;
-the following 3 files under $HOME/S4_Sourcecode/linux/arch/arm/boot/dts
1. embest-SOM_PH8700-BB_SPH1800-4.3inch_LCD.dtb
2. embest-SOM_PH8700-BB_SPH1800-7inch_LCD.dtb
3. embest-SOM_PH8700-BB_SPH1800-HDMI.dtb
The dtb files are corresponding for 4.3”LCD, 7”LCD and HDMI display. (Refer to HDMI and LCD )
Copy the files to SD Card.