bE-STM32MP157_650_R512_E4_I

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High performance industrial oriented computing module byteENGINE STM32MP157C with dual core ARM® Cortex®-A7 CPU (650 MHz). The CPU features furthermore a Co-CPU: 32-bit ARM® Cortex®-M4 (207 Mhz) and 3D graphics acceleration Vivante® – OpenGL® ES 2.0 Up to 26 Mtriangle/s, 133 Mpixel/s. SDRAM capacity is 512 MB DDR3. Flash-Memory is 4 GB eMMC.

Dual-core ARM® Cortex®-A7 CPU (650 MHz)
Co-CPU: 32-bit ARM® Cortex®-M4 (207 Mhz)
Parallel RGB/MIPI 24bit up to 1366x768@60 FPS
Vivante® - OpenGL® ES 2.0, 26 Mtriangle/s, 133 MP/s
SDRAM: 512 MB
eMMC: 4 GB
30 x 40 x 5 mm
-40 to +85 °C operational temp.

The byteENGINE STM32MP157 is a high performance industrial oriented computing module. It allows you a short time-to-market, reducing development costs and substantial design risks.

The system on module (SOM) uses the STM32MP157C device which is based on the high-performance dual-core ARM® Cortex®-A7 32-bit RISC core operating at up to 650 MHz. The STM32MP157xAC devices also embed a Cortex®-M4 32-bit RISC core operating at up to 200 MHz frequency. The Cortex-M4 core features a floating point unit (FPU) single precision which supports ARM® single-precision data- processing instructions and data types. Furthermore, the STM32MP157xAC devices embed a 3D graphic processing unit (Vivante® – OpenGL® ES 2.0) running at up to 533 MHz, with performances up to 26 Mtriangle/s, 133 Mpixel/s.

The onboard SDRAM is 512 MB, and the onboard Flash capacity is 4 GB eMMC.

Bytes at work also provides a security configuration with secure boot + cryptography (CRYP).

CPU

Frequency (max)	Dual 650 MHz
Floating Point	YES (NEON™)
Co-CPU	32-bit ARM® Cortex® M4 (209 MHz)
Security	Basic, Secure boot + cryptography (CRYP)

Memory

EEPROM	32 KB (containing HW configuration)
SDRAM	512MB
Flash Type	eMMC
Flash Capacity	4 GB
SPI Nor Flash	16 MB

Ethernet

Speed

2 x 10/100/1.000 (Mbit/s)

Multimedia

2D/3D Graphics	Vivante® – OpenGL® ES 2.0 Up to 26 Mtriangle/s, 133 Mpixel/s
Video	Parallel RGB 24bit up to 1366×768@60 FPS
Camera Parallel	8- to 14-bit camera interface up to 140 Mbyte/s
HDMI-CEC	1

Expansion

SD/MMC/SDIO

Serial

I2S, PDM, SPDIF	4
SPI	6
I2C	6
UART	4
USART	4
CAN	2

USB

2.0 HS

1 Host + 1 OTG

Miscellaneous

Watchdog Timers	3
Boot Mode	Selectable with Strapping Pins on Baseboard
FSMC	Yes
GPIO	176 GPIOS
JTAG	Yes
PWM / ECAP / QEP	4
ADC	2 x 16 Bit
DAC	2 x 12 Bit
Motor Ctrl Timers	2
RTC	With sub-second accuracy and hardware calendar and backup battery input
Temp	1

Hardware Acceleration

AES	128, 192, 256, TDES
CRC	2
HASH	MD5, SHA-1, SHA224, SHA256, HMAC
TRNG	2

Mechanical Information

Connector	2 x 100 pin
Dimension	30 x 40 x 5 mm
Input Voltage	3,3 – 5 V
Operational Temperature	-40 to +85 °C
Power Consumption	~2 W

Operating System

Linux (yocto)

Yes

Ordering Code: bE-STM32MP15[7]_[650]_R[512 MB]_[E 4GB]_[I]

The Ordering Code allows the customer to recognize easily
the detailed specification of the ordered SOM.

[SOM]:	SOM type	bE: byteENGINE
STM32MP15[x]:	CPU type	1: STM32MP151, 3: STM32MP153, 7: STM32MP157
[SPEED MHz]:	Clock speed	650, 800
R[xxx MB]:	RAM size	128, 256, 512, 1024 MB
[E/GB] [S/MB]:	FLASH type/size	eMMC: 4, 8, 16, 32, 64 GB / serial NAND: 128 MB
[C, I]:	Temperature range	[C] Customer 0° to +70° Celsius, [I] Industrial -40° to +85° Celsius

This section describes briefly the advantages of the compatible operating system (OS) Yocto Project. Furthermore, you will find information about how to create a bootable SD-Card with a prebuilt image by bytesatwork, how to install the prebuilt toolchain with an example and delivers links to the provided Yocto-layers.

Table of content

Supported OS

The Yocto Project (YP) is an open source collaboration project that helps developers create custom Linux-based systems regardless of the hardware architecture. Bytes at work is part of the Yocto Project and provides specific solutions for your specific applications. bytesatwork provides furthermore the necessary tools for a quick and productive test run.
Here are some highlights for the Yocto Project:

Provides a recent Linux kernel along with a set of system commands and libraries suitable for the embedded environment.
Makes available system components such as X11, GTK+, Qt, Clutter, and SDL (among others) so you can create a rich user experience on devices that have display hardware. For devices that do not have a display or where you wish to use alternative UI frameworks, these components need not be installed.
Creates a focused and stable core compatible with the OpenEmbedded project with which you can easily and reliably build and develop.
Fully supports a wide range of hardware and device emulation through the QEMU Emulator.

Provides a layer mechanism that allows you to easily extend the system, make customizations, and keep them organized.

Creating SD-Card

To accelerate the starting process bytesatwork provides a prebuilt image. This allows you to start a complete Yocto System from a microSD-Card. Here you will find information about how to write the prebuilt image to a microSD-Card in order to create a bootable image:

* Windows *
- Unzip the <file.wic.gz> (e.g. with 7-zip)
- Write the resulting <file.wic> to the uSD-card with a tool like Roadkil's Disk Image[https://www.roadkil.net/program.php?ProgramID=12]

* Linux *
- gunzip -c <file.wic.gz> | dd of=/dev/mmcblk0 bs=8M conv=fdatasync status=progress
- To improve write performance, you could use bmap-tools:
  bmaptool copy <file.wic.gz> /dev/mmcblk0

Initial SDK / Toolchain

In the Yocto Project development environment, toolchains are used to build the image and applications that run on the target hardware. You can install a prebuilt toolchain with just a few commands:

1) Download the Toolchain and install it
./poky-bytesatwork-glibc-x86_64-devbase-image-bytesatwork-cortexa7t2hf-neon-vfpv4-bytedevkit-toolchain-2.7.2.sh

2) Source the installed Toolchain
# source
/opt/poky-bytesatwork/2.7.2/environment-setup-cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi

3) Check if Cross-compiler is available in environment:
# echo $CC
# arm-poky-linux-gnueabi-gcc -mthumb -mfpu=neon-vfpv4 -mfloat-abi=hard
-mcpu=cortex-a7
--sysroot=/opt/poky-bytesatwork/2.7.2/sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi

4) Crosscompile the source code, e.g. by:
# $CC helloworld.c -o helloworld

5) Check generated binary:
# file helloworld
# helloworld: ELF 32-bit LSB pie executable, ARM, EABI5 version 1

6) Copy the binary to the target, e.g. by scp:
# scp helloworld root@<ip of bytedevkit>:

7) Login to target by user root, password rootme:
# ssh root@<ip of bytedevkit>

8) Run helloworld on target:
root@bytedevkit:~# cd /root; ./helloworld

Yocto Layers

Layers support the inclusion of technologies, hardware components, and software components. bytesatwork provides on GitHub the according layers to build a Yocto Based operating system (OS) efficiently. You can find the layers at the following links:

Generic layer:
Yocto branch zeus: https://github.com/bytesatwork/meta-bytesatwork.git

Platform specific layer:
Yocto branch zeus: https://github.com/bytesatwork/meta-bytesatwork-ti.git

Build your own image by using the repo tool:
Yocto branch zeus, https://github.com/bytesatwork/bsp-platform-ti/
How to use the repo tool: https://github.com/bytesatwork/bsp-platform-ti/blob/zeus/README.md

bE-STM32MP157_650_R512_E4_I

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