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Sama5d27WLSom1-EK

Last modified by Microchip on 2025/09/12 05:49

SoC Features

The SAMA5D2 series is a high-performance, ultra-low-power ARM Cortex-A5 processor based MPU. The Cortex A5 processor runs up to 500MHz and features the ARM NEON SIMD engine a 128kB L2 cache and a floating point unit. It supports multiple memories, including latest-generation technologies such as DDR3, LPDDR3, and QSPI Flash. It integrates powerful peripherals for connectivity (EMAC, USB, dual CAN, up to 10 UARTs, etc.) and user interface applications (TFT LCD controller, embedded capacitive touch controller, class D amplifier, audio PLL, CMOS sensor interface, etc.). The devices offer advanced security functions to protect customer code and secure external data transfers. These include ARM TrustZone, tamper detection, secure data storage, hardware encryption engines including private keys, on-the-fly decryption of code stored in external DDR or QSPI memory and a secure boot loader.

sama5d2.png

Kit Information

Kit Overview

The ATSAMA5D27-WLSOM1-EK1 is ideal for evaluating and prototyping with the SAMA5D27-WLSOM1, Wireless System On Module (SOM) and the SAMA5D27C-LD2G, LPDDR2 System In Package (SIP).

The Evaluation Kit is made up of a baseboard, an ATSAMA5D27-WLSOM1 SOM soldered on the baseboard and an ATSAMA5D27C-LD2G SIP soldered on the SOM.

The ATSAMA5D27-WLSOM1 Module integrates a 2-Gbit LPDDR2SDRAM, a Wi-Fi®/Bluetooth® module, a Secure Element device, a Power Management IC (PMIC), a QSPI memory, a 10/100 Mbps Ethernet PHY. 94 GPIO pins are provided by the SOM for general use in the system.

The baseboard features a wide range of peripherals, as well as a user interface. Connectors and expansion headers allows for easy customization and quick access to leading edge embedded features such as MikroElektronica Click Boards™.

The Evaluation Kit is supported by mainline Linux distribution as well as bare metal software frameworks allowing you to easily get started with your development.

The SAMA5D27 WLSOM1 EK documents can be found on microchip website, as following:

Kit Overview

Kit User Guide

a5d27_wlsom1_ek1_rev1_board_presentation.jpg

Access the console

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Access the console on DEBUG serial port

The serial console can be accessed from the DEBUG port with the help of a TTL-to-USB serial cable (marked as DEBUG J26).

Using DEBUG on TTL-to-USB connector (DEBUG J26)

  • For Microsoft Windows users: Install the driver of your USB TTL serial cable. FTDI-based ones are the most popular, have a look to this page to get the driver: https://www.ftdichip.com/Drivers/VCP.htm * Be sure to connect a 3.3V compatible cable and identify its GND pin. Place it properly according to the silkscreen and connect the cable to the board (J26)
    • For Microsoft Windows users: Identify the USB connection that is established, USB Serial Port should appear in Device Manager. The COMxx number will be used to configure the terminal emulator.
      ftdi serial line
    • For Linux users: Identify the serial USB connection by monitoring the last lines of dmesg command. The /dev/ttyUSBx number will be used to configure the terminal emulator.
      [605576.562740] usb 1-1.1.2: new full-speed USB device number 17 using ehci-pci
      [605576.660920] usb 1-1.1.2: New USB device found, idVendor=0403, idProduct=6001
      [605576.660933] usb 1-1.1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
      [605576.660939] usb 1-1.1.2: Product: TTL232R-3V3
      [605576.660944] usb 1-1.1.2: Manufacturer: FTDI
      [605576.660958] usb 1-1.1.2: SerialNumber: FTGNVZ04
      [605576.663092] ftdi_sio 1-1.1.2:1.0: FTDI USB Serial Device converter detected
      [605576.663120] usb 1-1.1.2: Detected FT232RL
      [605576.663122] usb 1-1.1.2: Number of endpoints 2
      [605576.663124] usb 1-1.1.2: Endpoint 1 MaxPacketSize 64
      [605576.663126] usb 1-1.1.2: Endpoint 2 MaxPacketSize 64
      [605576.663128] usb 1-1.1.2: Setting MaxPacketSize 64
      [605576.663483] usb 1-1.1.2: FTDI USB Serial Device converter now attached to ttyUSB0 A /dev/ttyUSB0 node has been created.
  • Now open your favorite terminal emulator with appropriate settings

Demo

Demo archives

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Play with the PTC demos

For more details regarding the PTC demos, please see Using PTC.

Build From source code

Setup ARM Cross Compiler

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Build AT91Bootstrap from sources

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Assuming you are at the AT91Bootstrap root directory, you will find a configs folder which contains several default configuration files:

sama5d27_wlsom1_ekqspi_uboot_defconfig
sama5d27_wlsom1_eksd_uboot_defconfig
Information

Tips: qspi means to read quad-SPI serial flash, sd means to read mmc card.

You can configure AT91Bootstrap to load U-Boot binary from SD Card by doing:

$ make mrproper
$ make sama5d27_wlsom1_eksd_uboot_defconfig

If the configuring process is successful, the .config file can be found at AT91Bootstrap root directory.

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Build U-Boot from sources

Getting U-Boot sources

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Cross-compiling U-Boot

Before compiling the U-Boot, you need setup cross compile toolchain in the section.

Warning

Latest versions of U-boot (2018.07 and newer) have a minimum requirement of 6.0 version of the GCC toolchain. We always recommend to use the latest versions.

Once the AT91 U-Boot sources available, cross-compile U-Boot is made in two steps: configuration and compiling. Check the Configuration chapter in U-Boot reference manual.

Information

Go to the configs/ to find the exact target when invoking make.

The U-Boot environment variables can be stored in different media, above config files can specify where to store the U-Boot environment.

   # To put environment variables in quad-SPI serial flash:
   sama5d27_wlsom1_ek_qspiflash_defconfig
  # To put environment variables in SD/MMC card:
   sama5d27_wlsom1_ek_mmc_defconfig

Here are the building steps for the SAMA5D27-WLSOM1-EK board:

# You can change the config according to your needs.
make sama5d27_wlsom1_ek_mmc_defconfig
make

The result of these operations is a fresh U-Boot binary called u-boot.bin corresponding to the binary ELF file u-boot.

  • u-boot.bin is the file you should store on the board
  • u-boot is the ELF format binary file you may use to debug U-Boot through a JTag link for instance.

Build Kernel from sources

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Build Yocto Project rootfs from sources

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