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Revision History
Revision Date
1.0
1.1
Sept 1, 2015
Sept 6, 2015
Author
S Kerr, G Mohiuddin
S Kerr
2.0 Nov 7, 2015 S Kerr
Murata Wi-Fi/BT
EVK for i.MX6
Quick Start Guide
(Linux)
Change Description
Initial Release
Removed software compile/build dependency. User can bring up
Freescale platform by downloading necessary files before flashing bootable SD card. Refer to Linux User Guide on software build procedures.
Modified Murata Wi-Fi/BT EVK definition. This simplifies bring-up on
Freescale i.MX6 Platforms. Incorporated changes for i.MX6UL 3.14.38
GA BSP Release.
©2009-2015 by Murata Electronics N.A., Inc.
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Table of Contents
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LIST OF TABLES
LIST OF FIGURES
Figure 9: Murata i.MX InterConnect V1 Adapter
Figure 10: Murata i.MX InterConnect V1 Adapter
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1
Introduction
Murata has partnered with Freescale Semiconductor and Broadcom Corporation to offer a complete
Wi-Fi and Bluetooth connectivity environment for building world class Internet-connected products.
The Murata Connectivity Modules enable developers to minimize the development time and effort for connectivity function implementation. This guide provides details for getting started with Wi-Fi and
Bluetooth on iMX6 platforms using Freescale Linux 3.14.38_6UL GA BSP . A typical Murata Wi-Fi/BT
EVK contains all the hardware necessary to enable Wi-Fi and Bluetooth functionality: contents are
Part #/
Tag Color
Picture of Contents Description of Contents
Murata Wi-Fi/BT EVB such as
Type ZP, Type 1BW, Type 1DX and SN8000. Type ZP is pictured.
1
.
2
3.
4
.
.
Murata i.MX InterConnect V1:
SD pins (DAT0..7) provide both
Wi-Fi SDIO and Bluetooth UART connection. Wired SD Card
Extender connects control signals:
WL_REG_ON
BT_REG_ON
WL_HOST_WAKE (optional)
Murata i.MX InterConnect V2:
SD pins provide Wi-Fi SDIO; ribbon cable connection provides
Bluetooth UART and control signals. 50 mm ribbon cable included.
2.4/5.0 GHz Whip/Tilt SMA
Antenna (for dual-band Wi-Fi)
Or
2.4 GHz Whip SMA Antenna
(for single band Wi-Fi)
Table 1: Murata Wi-Fi/BT EVK (for i.MX6) Contents
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Murata Wi-
Fi/BT EVK’s supported on Freescale i.MX6 Platforms are listed in Table 2. Currently four
modules are available. If you are having difficulty obtaining the desired Murata EVK, please contact
Murata for additional support.
Part Description Order part number
Type ZP EVK+ 802.11b/g/n/ac and BT EVK for i.MX6 LBEH5HMZPC-TEMP-DS-SD
Type 1BW EVK+ 802.11a/b/g/n and BT EVK for i.MX6 LBEH5DU1BW-TEMP-DS-SD
Wi-Fi b/g/n/ac a/b/g/n b/g/n
Bluetooth Smart
Ready
Yes
Yes
Yes
Type 1DX EVK+ 802.11b/g/n and BT EVK for i.MX6 LBEE5KL1DX-TEMP-DS-SD
SN8000
802.11b/g/n EVK for i.MX6
FCC certified, industrial
88-00153-90
Table 2: Murata Wi-
Fi/BT EVK’s Supported b/g/n No
Connection Diagram for the Murata Interconnect kit is provided in Figure 1. Murata Wi-Fi/BT kit for
i.MX6 enables this configuration by providing two custom-built Adapter boards. Two adapter boards are provided in each kit to allowing the user to bring up the Wi-Fi/Bluetooth interfaces in the easiest manner possible.
WLAN SDIO
Freescale i.MX6
Platform
BLUETOOTH
HCI H4-UART
Murata
Wi-Fi/BT
EVB:
ZP/1BW/
1DX/
SN8000
CTRL Signals
WL_REG_ON
BT_REG_ON
WL_HOST_WAKE
Figure 1: Murata IMX Interconnect Kit Interfaces
Note: 3
rd
party Freescale i.MX6 EVK’s are *not* supported.
©2009-2015 by Murata Electronics N.A., Inc.
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Table 3 presents the Freescale Platform and Murata Wi-Fi/BT EVK configurations. The first
column displays the default i.MX InterConnect Adapter (V1 or V2) for each combination of Freescale branded i.MX6 Reference Platforms and Murata Wi-Fi/BT EVK. An additional column indicates the optional configuration.
NOTE: Murata recommends the default configuration.
As Table 3 indicates, currently four (4) Freescale i.MX6 Platforms are supported. There is only one
complication for default configuration. Namely the i.MX 6Quad/DualLite SABRE-SD requires rework to successfully interface with the Murata hardware. As shipped from the factory, the i.MX
6Quad/DualLite SABRE-SD does not connect the J13 Bluetooth ribbon cable connector to the
necessary UART and control signals. Please reference the Hardware User Manual for necessary
rework. If Wi-Fi only functionality is acceptable then V1 Adapter is well suited (see optional column).
The only other optional hardware configuration is for i.MX 6SoloX SABRE-SD. The V1 adapter requires no rework for this platform and is the default configuration. However if the V2 adapter is desired (frees up one SD2 card slot) then rework is necessary. For specifics please reference the
Only one of the four i.MX6 Platforms do not connect all control signals: WL_REG_ON, BT_REG_ON, and WL_HOST_WAKE. The i.MX6 UltraLite EVK does not connect WL_HOST_WAKE by default.
Freescale i.MX6 Platform i.MX6Quad/DualLite SABRE-SD
DEFAULT
OPTIONAL Notes i.MX 6SoloX SABRE-SD i.MX 6SoloLite EVK
(Rework
Required)
(Wi-Fi Only)
(Rework
Required)
N/A
Please reference section 3.3.2.1 of
Hardware User Manual for rework instructions. V1 adapter option requires different DTB file.
For V2 adapter option, please reference section 3.1.2.1 of Hardware User Manual for rework instructions. V2 adapter requires different DTB file.
i.MX 6UltraLite EVK
N/A Rework necessary to UltraLite platform is option WL_HOST_WAKE is required. Please reference section 3.4.1.1 of Hardware User
Manual for rework instructions.
Table 3: Murata i.MX InterConnect Adapter Selection Table
For any given Freescale Platform/Murata EVK, click o n the corresponding “V1” or “V2” hyperlink to get redirected to relevant section in document.
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1.1 Acronyms
Acronym
API
DTB
EVB
EVK
FW
GPIO
PC
SW
UART
USB
Meaning
Application Programming Interface
Device Tree Blob: Kernel reads in at boot time for configuration.
Evaluation Board (Murata module on custom PCB)
Evaluation Kit (includes EVB + Adapter)
Firmware
General Purpose Input/Output
Personal Computer
Software
Universal Asynchronous Receiver/Transmitter
Universal Serial Bus
Table 4: Acronyms used in Quick Start Guide
1.2 References
1.2.1 Linux User Manual
Murata Wi-
Fi/BT EVK for i.MX6 Linux User Manual 2.0, “Murata Wi-Fi BT EVK for i.MX6 Linux User
Manual 2.0.pdf”.
This manual describes all steps necessary to build the file system, kernel, DTB files, and WLAN
“bcmdhd” driver necessary for supporting Freescale i.MX6 Platforms and the Murata Wi-Fi/BT EVK.
1.2.2 Hardware User Manual
Murata Wi-Fi/BT EVK for i.MX6 Hardware User Manu al 2.0, “Murata Wi-Fi BT EVK for i.MX6
Hardware User Manual 2.0.pdf”.
This manual details the Murata Wi-Fi/BT EVK InterConnect Adapter hardware. All interface signals to the Freescale i.MX6 Platforms are described. Specifics on interfacing each i.MX6 Platform to Murata
Wi-Fi/BT EVK are provided.
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2
Connecting to i.MX 6SoloX SABRE-SD
Murata Wi-Fi/BT EVB is oriented right-side up, and it provides both Wi-Fi and BT functionality via
SD3/SD2 slots: see Figure 2 below.
2.1 Murata i.MX InterConnect V1 Adapter
[1] Make sure no power is applied to i.MX 6SoloX SABRE-SD.
[2] Check that VIO setting on Murata i.MX6 Interconnect V1 Adapter (Part #2 in Table 1) is set to
3.3V (VBAT_SDIO). Refer to Red Rectangle
for correct jumper setting in Figure 8.
[3] Insert V1 Adapter board into SD3 slot and SD Card Extender into SD2 slot. Note the
orientation as shown in Figure 2.
[4] Connect antenna (Part #4) to the SMA connector of the Murata EVB (Part #1).
[5] Now you can connect the EVB to the 60-pin Samtec connector on the V1 Adapter board.
[6] Prepare SD card to boot platform per Section 6. U-boot has to be specific for i.MX 6SoloX.
[7] Power on platform and interrupt at u-boot. Type in following commands to set correct DTB file:
=> setenv fdt_file imx6sx-sdb-murata-v1_sdext.dtb
=> saveenv
=> reset (causes platform to boot kernel)
[8] Refer to Section 7 to test/verify Wi-Fi and Bluetooth functionality.
Figure 2: i.MX 6SoloX SABRE-SD with V1 Adapter and Type ZP EVB
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2.2 Murata i.MX InterConnect V2 Adapter (Optional)
Refer to the Hardware User Manual for detailed necessary rework instructions on i.MX 6SoloX
SABRE-SD. Both WL_REG_ON and WL_HOST_WAKE need to be connected. Clearly two
advantages with this configuration: “tidy” solution and opens up SD3 slot: see Figure 3 below.
These steps will only pass if Freescale Platform has been correctly reworked.
[1] Make sure no power is applied to i.MX 6SoloX SABRE-SD.
[2] Check that VIO setting on Murata i.MX6 Interconnect V2 Adapter (Part #3 in Table 1) is set to
3.3V (VBAT_SDIO). Refer to Red Rectangle
for correct jumper setting in Figure 11.
[3] After connecting ribbon cable to both adapter and i.MX 6SoloX, insert V2 Adapter board into
SD2 slot. Refer to the Hardware User Manual for more information on ribbon cable connection.
[4] Connect antenna (Part #4) to the SMA connector of the Murata EVB (Part #1).
[5] Now you can connect the EVB to the 60-pin Samtec connector on the V2 Adapter board.
[6] Prepare SD card to boot platform per Section 6. U-boot has to be specific for i.MX 6SoloX.
[7] Power on platform and interrupt at u-boot. Type in following commands to set correct DTB file:
=> setenv fdt_file imx6sx-sdb-murata-v2.dtb
=> saveenv
=> reset (causes platform to boot kernel)
[8] Refer to Section 7 to test/verify Wi-Fi and Bluetooth functionality.
Figure 3: i.MX 6SoloX SABRE-SD with V2 Adapter and Type 1DX EVB
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3
Connecting to i.MX 6SoloLite EVK
Referring to Table 3, V1 Adapter is the only solution for this platform. Murata Wi-Fi/BT EVB is
oriented right-side up, and it provides both Wi-Fi and BT functionality via SD1 slot with control signals
connected from SD3 slot using SD Card Extender: see Figure 4 below.
3.1 Murata i.MX InterConnect V1 Adapter
[1] Make sure no power is applied to i.MX 6SoloLite EVK.
[2] Check that VIO setting on Murata i.MX6 Interconnect V1 Adapter (Part #2 in Table 1) is set to
3.3V (VBAT_SDIO). Refer to Red Rectangle
for correct jumper setting in Figure 8.
[3] Insert V1 Adapter board into SD1 slot and SD Card Extender into SD3 slot. Note the
orientation as shown in Figure 4.
[4] Connect antenna (Part #4) to the SMA connector of the Murata EVB (Part #1).
[5] Now you can connect the EVB to the 60-pin Samtec connector on the V1 Adapter board.
[6] Prepare SD card to boot platform per Section 6. U-boot has to be specific for i.MX 6SoloLite.
[7] Power on platform and interrupt at u-boot. Type in following commands to set correct DTB file:
=> setenv fdt_file imx6sl-evk-murata-v1_sdext.dtb
=> saveenv
=> reset (causes platform to boot kernel)
[8] Refer to Section 7 to test/verify Wi-Fi and Bluetooth functionality.
Figure 4: i.MX 6SoloLite EVK with V1 Adapter and Type 1DX EVB
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4
Connecting to i.MX 6Quad/DualLite SABRE-SD
Referring to Table 3, the i.MX 6Quad/DualLite SABRE-SD presents additional challenges. If the only
interface required is WLAN, then the V1 Adapter on SD2 slot (with SD Card Extender on SD3 slot) provides an adequate solution. However if Bluetooth (UART) connection is required, then the only option is to rework the Freescale platform.
As shipped from the factory, the i.MX 6Quad/DualLite SABRE-SD does not connect the J13 Bluetooth
ribbon cable connector to the necessary UART and control signals. Please reference the Hardware
User Manual for necessary rework. Freescale also details the board rework in their schematic file
(Bluetooth page). Page 15 of the Freescale schematic (SPF-27516_C3.pdf) correctly captures the necessary rework to be done.
Repeated here:
NOTE: To use J13, populate resistors R209 - R213 and depopulated the SPI NOR FLASH
U14. Resistors R214 and R215 should not be populated because both UART outputs (TXDs) have been crossed together and both UART inputs (RXDs) have been crossed together. To make the UART work correctly, solder a jumper wire from R215 pad 1 to R214 pad 2 and from
R215 pad 2 to R214 pad 1.
If (after rework) V2 Adapter does not look to work correctly, try V1 Adapter and verify just Wi-Fi functionality. Board rework can only be done by a skilled technician with the correct tools.
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4.1 Murata i.MX InterConnect V2 Adapter
These steps will only pass if Freescale Platform has been correctly reworked. See Section 4.
NOTE: The Freescale i.MX6 platform has been inverted. This makes working with Wi-Fi/BT EVK much easier.
The one drawback is if Ethernet port must be accessed. To properly match Wi-Fi/BT EVK and i.MX6 platform heights, nylon washers are ad ded as additional spacers to “standard” Freescale i.MX6 standoffs.
[1] Make sure no power is applied to i.MX 6Quad/DualLite SABRE-SD.
[2] Check that VIO setting on Murata i.MX6 Interconnect V2 Adapter (Part #3 in Table 1) is set to
3.3V (VBAT_SDIO). Refer to Red Rectangle
for correct jumper setting in Figure 11.
[3] After connecting ribbon cable to both adapter and i.MX6Q/DL, insert Adapter board into SD2
slot. Note the orientation as shown in Figure 5.
[4] Connect antenna (Part #4) to the SMA connector of the Murata EVB (Part #1).
[5] Now you can connect the EVB to the 60-pin Samtec connector on the Adapter board.
[6] Prepare SD card to boot platform per Section 6. U-boot has to be specific for i.MX 6Quad/DL.
[7] Power on platform and interrupt at u-boot. Type in following commands to set correct DTB file:
=> setenv fdt_file imx6q-sabresd-murata-v2.dtb (or imx6dl-sabresd-murata-v2.dtb)
=> saveenv
=> reset (causes platform to boot kernel)
[9] Refer to Section 7 to test/verify Wi-Fi and Bluetooth functionality.
Figure 5: i.MX 6Quad SABRE-SD (Inverted) with V2 Adapter and Type ZP EVB
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4.2 Murata i.MX InterConnect V1 Adapter (Optional)
This configuration only supports Wi-Fi functionality.
NOTE: This Wi-Fi/BT configuration does not allow the user to use SD3 slot to default SD Card boot slot. To boot platform, the user must configure alternative boot method such as EMMC flash.
[1] Make sure no power is applied to i.MX 6Quad/DualLite SABRE-SD.
[2] Check that VIO setting on Murata i.MX6 Interconnect V1 Adapter (Part #2 in Table 1) is set to
3.3V (VBAT_SDIO). Refer to Red Rectangle
for correct jumper setting in Figure 8.
[3] Insert V1 Adapter board into SD2 slot and SD Card Extender into SD3 slot. Note the
orientation as shown in Figure 6.
[4] Connect antenna (Part #4) to the SMA connector of the Murata EVB (Part #1).
[5] Now you can connect the EVB to the 60-pin Samtec connector on the Adapter board.
[6] Prepare SD card to boot platform per Section 6. U-boot has to be specific for i.MX 6Quad/DL.
[7] Power on platform and interrupt at u-boot. Type in following commands to set correct DTB file:
=> setenv fdt_file imx6q-sabresd-murata-v1_sdext.dtb (or imx6dl-sabresd-murata-v1_sdext.dtb)
=> saveenv
=> reset (causes platform to boot kernel)
[8] Refer to Section 7 to test/verify Wi-Fi and Bluetooth functionality.
Figure 6: i.MX 6Quad SABRE-SD with V1 Adapter and Type 1DX EVB
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5
Connecting to i.MX 6UltraLite EVK
V2 Adapter for providing both Wi-Fi (SDIO in-band interrupt signaling) and Bluetooth connectivity.
NOTE: The default hardware configuration on i.MX 6UltraLite EVK only supports SDIO in-band interrupts. For out-of-band interrupts (WL_HOST_WAKE connected), rework is necessary. For specifics please reference the
5.1 Murata i.MX InterConnect V2 Adapter
[1] Make sure no power is applied to i.MX 6UltraLite EVK.
[2] Check that VIO setting on Murata i.MX6 Interconnect V2 Adapter (Part #3 in Table 1) is set to
3.3V (VBAT_SDIO). Refer to Red Rectangle
for correct jumper setting in Figure 11.
[3] Connect antenna (Part #4) to the SMA connector of the Murata EVB (Part #1).
[4] Connect the EVB to the 60-pin Samtec connector on the Adapter board.
[5] Connect ribbon cable at both ends before inserting Murata EVK into SD1 slot. Note the
orientation as shown in Figure 7. The UltraLite uses a
“push-push” SD card connector.
Make sure that the adapter clicks in correctly.
[6] Prepare SD card to boot platform per Section 6. U-boot has to be specific for i.MX 6UltraLite.
[7] Power on platform and interrupt at u-boot. Type in following commands to set correct DTB file:
=> setenv fdt_file imx6ul-14x14-evk-murata-v2.dtb
=> saveenv
=> reset (causes platform to boot kernel)
[8] Refer to Section 7 to test/verify Wi-Fi and Bluetooth functionality.
Figure 7: i.MX 6UltraLite EVK with V2 Adapter and Type 1DX EVB
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6
Preparing Bootable SD Card for i.MX6 with Murata Wi-Fi/BT EVK
The current release supported is Freescale Linux 3.14.38_6UL GA BSP . The L3.14.38_6UL release integrates the necessary Broadcom Wi-Fi and Bluetooth drivers. For this specific release, Freescale only provides a pre-built image for the i.MX 6UltraLite EVK. For other Freescale i.MX6 Platforms the end user must build the image using the Yocto distribution for L3.14.38. If you prefer to use L3.14.38
rootfs (ideal approach) then please reference the Linux User Manual .
However to ease initial platform bring-up, a hybrid approach is taken (for non-UltraLite platforms) by using previous L3.14.28_GA rootfs with the new L3.14.38 Kernel, DTB, and Wi-Fi driver files:
Download the appropriate i.MX6 “bundle”: hyperlinks provided in Table 5.
Flash SD card with
“*.sdcard” image file.
Download modified kernel file (zImage), new Murata Device Tree Blob (DTB) files, and Wi-Fi driver (bcmdhd.ko) from Murata/i.MX Portal on Freescale Community website.
For non-UltraLite platforms, c opy zImage and dtb files to “/boot” folder. Also copy “bcmdhd.ko” to “/lib/modules/3.14.xx.yy/kernel/drivers/net/wireless/bcmdhd/” folder.
For i.MX 6UltraLite, copy on ly necessary dtb file to “/boot” folder.
Download Broadcom Firmware package from Freescale/Murata i.MX Support Portal on
Broadcom Community website and copy to
“/home/root” folder
“Blacklist” the bcmdhd driver so there is no attempt to insmod it during kernel boot. This is accomplished by editing the “/etc/modprobe.d/blacklist.conf” file.
6.1 IMPORTANT: Getting Signed Up for Freescale and Broadcom Portals
This is the only step which is time-sensitive. You need to be a registered user at both Freescale and
Broadcom Community websites. Once you are registered please email [email protected]
to gain access to both Freescale/Murata i.MX Support Portal and Murata/i.MX Portal . Turnaround for this request is typically no more than 24 hours.
6.2 Downloading Freescale and Broadcom Packages
Once you have access, download the following packages:
- L3.14.38_6ul-ga_binaries_11072015
- BRCM_FW_for_i.MX_11072015
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6.3 Downloading i.MX6 Image Files to Flash SD Card
provides direct download links to i.MX6 “Bundles” for each Freescale Platform. The available
SD card images are included too. All links point to common www.freescale.com
download area.
Simply click on the hyperlink for the desired
“SD Card Image File” and download the package. Once the download has finished pull the appropriate *.sdcard file from the bundle/package.
i.MX6 Platform
Available SD Card Image Files
i.MX 6Quad/DualLite SABRE-SD i.MX 6SoloX SABRE-SD fsl-image-gui-x11-imx6qdlsolo.sdcard
fsl-image-qt5-x11-imx6qdlsolo.sdcard
fsl-image-gui-x11-imx6sxsabresd.sdcard
fsl-image-qt5-x11-imx6sxsabresd.sdcard
i.MX 6SoloLite EVK fsl-image-gui-x11-imx6slevk.sdcard fsl-image-qt5-x11-imx6slevk.sdcard
i.MX 6UltraLite EVK fsl-image-gui-x11-imx6ulevk.sdcard
Table 5: i.MX6 Bundle Download Links and Specific SD Card Image Filenames
6.4 Flashing SD Card
Insert SD card into host machine (PC). The SD card must get enumerated as “/dev/sdx” device (may require SD card to USB adapter)
. Once SD card has been inserted, run “dmesg” command to find which “/dev/sdx” device just enumerated.
NOTE: Before running next command, make sure you have selected correct device. Otherwise you can wipe your hard drive!
$ sudo dd if=<fsl image name>.sdcard of=/dev/sdx bs=1M && sync
6.5 Copying/Replacing/Modifying Files on SD Card
You will have already downloaded two packages from Section 6.2. Now we have to copy these files
over to newly prepared SD card.
First let’s take care of
Freescale binary download (contains zImage, new dtb files, and bcmdhd.ko driver file).
$ tar –xvf L3.14.38_6ul-ga_binaries_11072015.tar
$ cd L3.14.38_6ul-ga_binaries_11072015
For non-UltraLite platforms, we copy over the modified kernel:
$ sudo cp zImage <i.MX6 Target Boot folder>
For all platforms, we need to copy over the modified DTB files:
$ sudo cp *.dtb <i.MX6 Target Boot folder>
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Next two steps are optional. I f already using L3.14.38 rootfs, then we don’t have to copy “bcmdhd.ko”.
For previous L3.14.28 rootfs, perform next two steps:
$ sudo mkdir <i.MX6 rootfs>/lib/modules/3.14.xx.yy/kernel/drivers/net/wireless/bcmdhd
$ sudo cp bcmdhd.ko <i.MX6 rootfs>/lib/modules/3.14.xx.yy/kernel/drivers/net/wireless/bcmdhd/
To better understand the new Device Tree Blob (dtb) files, please refer to Table 6. The target i.MX6
device is listed along with options of dts/dtb files. DTS files are located at “/arch/arm/boot/dts”. DTB files are very useful when it comes to re-configuring hardware. When booting the platform, customer merely has to select the correct DTB file by using “setenv fdt_file” command at u-boot prompt.
Target (MACHINE) Default
imx6dlsabresd imx6dl-sabresd-murata-v2.dtb imx6qsabresd imx6slevk imx6q-sabresd-murata-v2.dtb
Optional
imx6dl-sabresd-murata-v1_sdext.dtb imx6q-sabresd-murata-v1_sdext.dtb imx6sl-evk-murata-v1_sdext.dtb N/A imx6sxsabresd imx6ulevk imx6sx-sdb-murata-v1_sdext.dtb imx6sx-sdb-murata-v2.dtb imx6ul-14x14-evk-murata-v2.dtb N/A
Table 6: i.MX6 Targets supported on Linux 3.14.38 GA Release
Next let’s take care of the
Broadcom firmware drop . This step is just a simple copy.
$ sudo cp BRCM_FW_for_i.MX_11072015.tar <i.MX6 rootfs>/home/root/
To prevent Broadcom WLAN (bcmdhd) driver being loaded during kernel boot, it must be added to
“blacklist” configuration file. In the command below, “gedit” is used to edit the “blacklist.conf” file:
$ sudo gedit <i.MX6 rootfs>/etc/modprobe.d/blacklist.conf
add line: “blacklist bcmdhd”; save file
Now the SD card is ready. Make sure all changes are saved correctly
(i.e. “sync” command or “safely remove drive”, etc.) and plug it into the Freescale i.MX6 Platform.
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7
Test/Verification of Wi-Fi and Bluetooth
Now the kernel should be booting correctly on the platform with Murata Wi-Fi/BT EVK pugged in (i.e. already set correct DTB file when interrupting u-boot). Next steps are to quickly verify that Wi-Fi and
Bluetooth are functional.
Before testing either Wi-
Fi or Bluetooth, there is one necessary step (first boot only on “fresh” SD card) to install the necessary firmware, NVRAM, and tool files. Once kernel has booted, you should see the Broadcom firmware package in the root home folder. First extract it
(using “tar” command) and then run Murata shell script to install necessary files.
Login: root
$ ls
BRCM_FW_for_i.MX_11072015.tar
$ tar -xvf BRCM_FW_for_i.MX_11072015.tar
$ cd BRCM_FW_for_i.MX_11072015
$ . ./Murata_Startup_Script.sh
Expected output is (need to enter current Murata module being tested and hit return):
Please enter EVB String (ZP, 1BW, 1DX, or SN8000): 1DX
Selecting Murata Type 1DX...
The Murata script file does the following:
1) Copies Bluetooth firmware “patch files” to “/etc/firmware” folder.
2) Copies Wi-Fi folders (ZP/1BW/1DX/SN8000) to “/lib/firmware/bcm” folder. Each of these folders contains firmware and NVRAM specific to each module.
3) Copies “WL” tool to “/bin” folder. This is a Broadcom-specific WLAN configuration/test utility.
4) Copies firmware and NVRAM for selected module to “/lib/firmware/bcm” folder. This script file defaults to copying over NVRAM for SDIO in-band interrupt signaling.
5) If user enters wrong module string then the script will exit with a warning statement.
7.1 Bringing up Wi-Fi for Quick Test/Verification
To bring up Wi-Fi, a script file is included to make things easier. Invoke as follows:
$ . ./insmod_Wi-Fi-Driver.sh
Some of the key parameters:
-
“firmware_path” provides entire path and filename to firmware being loaded.
-
“nvram_path” provides entire path and filename to NVRAM being loaded.
-
“dhd_msg_level” sets debug output. Defaults to 0x1 (error only). For full logs, set this to 0xffff.
NOTE: “insmod_Wi-Fi-Driver.sh” script may require editing so that correct path is used for “bcmdhd.ko” file.
Path for 3.14.38 kernel is default. Path for 3.14.28 is commented out.
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Expected Output Is: dhd_module_init in
Power-up adapter 'DHD generic adapter' wifi_platform_bus_enumerate device present 1
F1 signature OK, socitype:0x1 chip:0xa9a6 rev:0x1 pkg:0x3
DHD: dongle ram size is set to 524288(orig 524288) at 0x0 wifi_platform_get_mac_addr
CFG80211-ERROR) wl_setup_wiphy : Registering Vendor80211) wl_create_event_handler(): thread:wl_event_handler:3a8 started
CFG80211-ERROR) wl_event_handler : tsk Enter, tsk = 0xa9dc141c dhd_attach(): thread:dhd_watchdog_thread:3a9 started dhd_attach(): thread:dhd_dpc:3aa started dhd_deferred_work_init: work queue initialized dhdsdio_write_vars: Download, Upload and compare of NVRAM succeeded. dhd_bus_init: enable 0x06, ready 0x06 (waited 0us) wifi_platform_get_mac_addr
Firmware up: op_mode=0x0005, MAC=fc:db:b3:80:eb:81
Firmware version = wl0: Dec 11 2014 04:20:45 version 7.10.323.34 (r520360) FWID 01-ea2beeba dhd_wlfc_init(): successfully enabled bdcv2 tlv signaling, 79 dhd_wlfc_init: query wlfc_mode succeed, fw_caps=0x1c dhd_wlfc_init(): wlfc_mode=0x1c, ret=0
Dongle Host Driver, version 1.141.72 (r)
Compiled from
Register interface [wlan0] MAC: fc:db:b3:80:eb:81
You can ignore the “CFG80211-ERROR” messages. Key line is the last one indicating that “wlan0” interface is active. Now invoke
“ifconfig” command to bring up “wlan0”. “WL” can be invoked to actively scan the environment.
The “scanresults” will return any visible SSID’s.
$ ifconfig wlan0 192.168.1.111 up /* Other IP Address (or none) can be selected here. */
$ wl scan
$ sleep 2 /* Delay inserted for Wi-Fi to obtain probe responses; increases for dual-band. */
$ wl scanresults
NOTE: "CFG80211-ERROR) wl_notify_scan_status : scan is not ready" message is to be expected. The delay in command sequence is necessary. Otherwise “wl scanresults” returns nothing. Only once “CFG80211-
ERROR
” message is logged to console, can “wl scanresults” be invoked.
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Expected Output Is:
$ ifconfig wlan0 192.168.1.111 up
$ wl scan
“CFG80211-ERROR) wl_notify_scan_status : scan is not ready
$ wl scanresults
SSID: "Murata-WS-416F82"
Mode: Managed RSSI: -68 dBm SNR: 0 dB noise: 0 dBm Flags: RSSI on-channel Channel: 1
BSSID: 00:0B:6C:41:6F:82 Capability: ESS ShortSlot
Supported Rates: [ 1(b) 2(b) 5.5(b) 6 9 11(b) 12 18 24 36 48 54 ]
HT Capable:
Chanspec: 2.4GHz channel 1 20MHz (0x1001)
Primary channel: 1
HT Capabilities:
Supported MCS : [ 0 1 2 3 4 5 6 7 ]
SSID: "MY_AP_SSID"
Mode: Managed RSSI: -61 dBm SNR: 0 dB noise: 0 dBm Flags: RSSI on-channel Channel: 1
BSSID: 00:18:E7:FE:5C:13 Capability: ESS WEP ShortPre ShortSlot
Supported Rates: [ 1(b) 2(b) 5.5(b) 6(b) 9 11(b) 12(b) 18 24(b) 36 48 54 ]
WPA:
multicast cipher: TKIP
unicast ciphers(2): AES-CCMP TKIP
AKM Suites(1): WPA-PSK
No WPA Capabilities advertised
RSN:
multicast cipher: TKIP
unicast ciphers(2): AES-CCMP TKIP
AKM Suites(1): WPA-PSK
Capabilities(0x0000): No Pre-Auth, Pairwise, 1 PTK Replay Ctr1 GTK Replay Ctr
HT Capable:
Chanspec: 2.4GHz channel 1 20MHz (0x1001)
…… etc.
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7.2 Bringing up Bluetooth for Quick Test/Verification
For Murata modules supporting Bluetooth, we can verify the HCI UART connection by invoking
“hciattach”, bringing up the interface with “hciconfig” and then invoking “hcitool scan” to see what
Bluetooth devices are visible. The Bluetooth test commands vary depending on interconnect: which
GPIO toggles the BT_REG_ON signal, and the UART port connection. It is necessary to reset the
Bluetooth core before trying to initia lize it (i.e. download Bluetooth “patch file” firmware – located in
user can copy/paste/invoke entire command sequence from the console.
i.MX6
i.MX 6Quad/DualLite
SABRE-SD i.MX 6SoloX SABRE-SD
GPIO171; UART3 (V1) GPIO106; UART5 (V2)
Both V1/V2 Adapters provide BT connectivity on SoloX. i.MX 6SoloLite EVK i.MX 6UltraLite EVK
Default
Optional
N/A (V1)
N/A
N/A
Notes
Only V2 Adapter connection provides BT connectivity.
GPIO252 does not allow its direction to be set. Always output.
Table 7: GPIO and UART Settings for Bluetooth Tests
When controlling the
“GPIO register/BT_REG_ON signal”, we drive BT_REG_ON low (resets BT core) and then drive it high again (takes BT core out of reset). Test command sequence is as follows: echo [GPIO #] > /sys/class/gpio/export echo out > /sys/class/gpio/gpio[GPIO #]/direction /* SKIP this step for i.MX 6UltraLite EVK */ echo 0 > /sys/class/gpio/gpio[GPIO #]/value sleep 0.1 echo 1 > /sys/class/gpio/gpio[GPIO#]/value hciattach /dev/ttymxc[UART# -1] bcm43xx 3000000 flow -t 20 hciconfig hci0 up hcitool scan
To clarify the syntax, here is the command sequence for i.MX 6Quad SABRE-SD with V2 Adapter
(sequence sets UART rate to 3Mbaud - default rate for Broadcom chipset): echo 2 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio2/direction echo 0 > /sys/class/gpio/gpio2/value sleep 0.1 echo 1 > /sys/class/gpio/gpio2/value hciattach /dev/ttymxc4 bcm43xx 3000000 flow -t 20 hciconfig hci0 up hcitool scan
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Here is example output with Type ZP module (not including GPIO setup):
$ hciattach /dev/ttymxc4 bcm43xx 3000000 flow -t 20 bcm43xx_init
Set Controller UART speed to 3000000 bit/s
Flash firmware /etc/firmware/BCM4335C0.ZP.hcd
Set Controller UART speed to 3000000 bit/s
Device setup complete
$ hciconfig hci0 up
$ hcitool scan
Scanning ...
60:D8:19:B3:7F:41 DMNTNGR-X220
78:F7:BE:72:07:E6 SDK's GS4
7.2.1 i.MX 6Quad/DualLite SABRE-SD (Default: V2 Adapter)
echo 2 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio2/direction echo 0 > /sys/class/gpio/gpio2/value sleep 0.1 echo 1 > /sys/class/gpio/gpio2/value hciattach /dev/ttymxc4 bcm43xx 3000000 flow -t 20 hciconfig hci0 up hcitool scan
7.2.2 i.MX 6SoloX SABRE-SD (Default: V1 Adapter)
echo 171 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio171/direction echo 0 > /sys/class/gpio/gpio171/value sleep 0.1 echo 1 > /sys/class/gpio/gpio171/value hciattach /dev/ttymxc2 bcm43xx 3000000 flow -t 20 hciconfig hci0 up hcitool scan
7.2.3 i.MX 6SoloX SABRE-SD (Optional: V2 Adapter)
echo 106 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio106/direction echo 0 > /sys/class/gpio/gpio106/value sleep 0.1 echo 1 > /sys/class/gpio/gpio106/value hciattach /dev/ttymxc4 bcm43xx 3000000 flow -t 20 hciconfig hci0 up hcitool scan
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7.2.4 i.MX 6SoloLite EVK (Default: V1 Adapter)
echo 145 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio145/direction echo 0 > /sys/class/gpio/gpio145/value sleep 0.1 echo 1 > /sys/class/gpio/gpio145/value hciattach /dev/ttymxc3 bcm43xx 3000000 flow -t 20 hciconfig hci0 up hcitool scan
7.2.5 i.MX 6UltraLite EVK (Default: V2 Adapter)
echo 252 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio252/direction echo 0 > /sys/class/gpio/gpio252/value sleep 0.1 echo 1 > /sys/class/gpio/gpio252/value hciattach /dev/ttymxc1 bcm43xx 3000000 flow -t 20 hciconfig hci0 up hcitool scan
8
Verifying Adapter Boards
To ensure correct functioning of Murata Wi-Fi/BT EVK, it is of key importance to check the adapter configuration based upon jumper settings and short pads open/closed.
8.1 Murata i.MX InterConnect V1 Adapter
Figure 8: Murata i.MX InterConnect V1 Adapter - Top
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Refer to Figure 8: Murata i.MX InterConnect V1 Adapter - Top for default configuration on V1
Adapter board. VIO jumper should be in RED position
– set for VBAT_SDIO which is approximately
3.3V (i.e. VIO = VBAT). The adapter allows for 1.8V VIO operation (
ORANGE
position) but this Quick
Start Guide currently does not support that option. A future revision will support both 1.8V and 3.3V
VIO signaling on platforms/configurations that permit it. Note that there are no closed (soldered) short-pads on V1 Adapter from top view. Of course you will see the soldered connections for
WL_HOST_WAKE, WL_REG_ON, and BT_REG_ON.
Figure 9: Murata i.MX InterConnect V1 Adapter
– Bottom #1
Figure 10: Murata i.MX InterConnect V1 Adapter
– Bottom #2
Two figures are presented for the bottom side of the Murata i.MX InterConnect V1 Adapter. This is
done to give unobstructed views of all the short pads. Refer to Figure 9: Murata i.MX InterConnect
– Bottom #1 and Figure 10: Murata i.MX InterConnect V1 Adapter – Bottom #2 for
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default configuration on V1 Adapter Board. Compare your adapter with the short pads (open versus closed). There should be a one-to-one mapping. The short pad selections on bottom of adapter board connect Bluetooth UART through to SD_DAT4..7 pins (TP109, TP122, TP116, and TP130 closed/soldered). TP133 short pad is closed/soldered to connect VBAT_SDIO (voltage supply from
SD VDD Pin #4) to VBAT_IN which powers the Murata Wi-Fi/BT EVB. The other power supply option is to use an external power supply: short TP134 (with TP133 open) and connect external supply to
TP131 and TP
132 (marked “EXT VBAT 4-5V” and “GND” on silkscreen - see Figure 8).
The V1 Adapter is prewired to SD Card Extender. This is done to provide “plug ‘n play” interoperability with Freescale i.MX 6SoloX SABRE-SD and i.MX 6SoloLite EVK. The connected signals are BT_REG_ON (yellow), WL_REG_ON (orange), and WL_HOST_WAKE (blue). This allows direct mapping to i.MX6 GPIO’s to these control signals. For additional specific information on default
configuration, please reference the Hardware User Manual.
8.2 Murata i.MX InterConnect V2 Adapter
To ensure correct functioning of Murata Wi-Fi/BT EVK, it is of key importance to check the adapter configuration based upon jumper settings and short pads open/closed. V2 Adapter is much simpler than V1. However it is still important to check all connections to make sure they match defaults.
Refer to Figure 11: Murata i.MX InterConnect Adapter V2 Adapter - Top. VIO jumper should be in
RED
position
– set for VBAT_SDIO which is approximately 3.3V (i.e. VIO = VBAT). The adapter allows for 1.8V VIO operation (
ORANGE
position) but this Quick Start Guide currently does not support that option. A future revision will support both 1.8V and 3.3V VIO signaling on platforms/configurations that permit it. Only two short pads are close on top: TP14 and TP13. TP14 short pad is closed/soldered to connect VBAT_SDIO (voltage supply from SD VDD Pin #4) to
VBAT_IN which powers the Murata Wi-Fi/BT EVB. The other power supply option is to use an external power supply: short TP15 (with TP14 open) and connect external supply to TP11 and TP12
(marked “Ext/VBAT4-5V” and “GND” on silkscreen - see Figure 11). TP13 connects the
BT_REG_ON control signal.
Figure 11: Murata i.MX InterConnect Adapter V2 Adapter - Top
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Refer to Figure 12: Murata i.MX InterConnect Adapter V2 Adapter - Bottom. Both TP20 and TP21
short pads are closed to connect WL_REG_ON and WL_HOST_WAKE respectively.
WL_HOST_WAKE is an optional out-of-band interrupt signal that is not defined in this Quick Start document. It will be documented (and optionally enabled) in future version.
Figure 12: Murata i.MX InterConnect Adapter V2 Adapter - Bottom
For additional specific information on default configuration, please reference the Hardware User
9
Technical Support Contact
Contact Wireless module application support at [email protected]
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