M88 Evaluation Kit User Guide
Connecting to the board
STO-DEV7227-HB Rev. 2.1
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11.2
Enabling the GNSS LED
There is a LED situated close to P504 which can be used to indicate 3D fix on the GNSS receiver. To
enable this function, the following commands needs to be given to the M88 (they can be put in the
startup.ini for convenience).
out cf 0x80
(set PF7 as output)
out df 0xf3
(set PF7 to high)
This will result in the LED blinking green when the GNSS is acquiring a signal and change to fixed green
when the GNSS receiver has a 3D fix.
11.3
Check GNSS reception on the M88
After starting the PTP engine (mode 1, 2 or 3) give the following commands to check the status.
ptp2 gps status
(this will print GPS interface status)
ptp2 gps nmea
(this will print satellite information)
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Connecting to the board
•
After powering the system, connect one end of the USB cable to the M88 Evaluation Kit and the
other end to your computer. After connecting to the PC, the “Found New Hardware Wizard”
will appear on the PC. Allow the wizard to install the USB driver automatically.
•
Verify which communication port is assigned to the USB serial port by checking the Device
Manager. You will need this information to configure the serial port being used.
•
Open your terminal program application and connect it to the serial port using a baud rate of
115200, 8 bit data, no parity, 1 stop bit and no flow control.
•
When you hit enter, you should see the following:
localhost.localdomain (M88-128, v1.0.x)
Login:
Use the following credentials to login:
Login: root
Password: root
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Application examples
These application examples are meant as a quick start guide and refers to the use of
Silicon Labs'
Qg 2
Carrier Grade Multi-Sync Gateway and PTP Grandmaster (see [2])
13.1
Set up the M88 Evaluation Kit as a E2E, Multicast PTP slave
Here’s a guide on how to set up the Qg 2 as Grandmaster and get the
M88 Evaluation Kit to synchronize
to the Qg 2.
13.1.1
Setting up the Qg 2
Please refer to [3] for details on how to communicate to and configure the Qg 2.
