OL2385SWUG datasheet(56/64 Pages) NXP

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NXP Semiconductors

OL2385SWUG

SIGFOX software driver

OL2385SWUG

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User guide

Rev. 2.1 — 6 April 2018

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serial output of the OL2385 board, as the RSSI level of each received frame. In an

ideal lossless system, displayed RSSI level value will be equal to the set power level

value. However, that is not the case due to losses in the connected RF cable. A

reduced value of the RSSI level on putty terminal is likely.

8. Click on the

config... tab on the Baseband block of the block diagram on the signal

generator. Choose the Custom digital modulation option from the list. This is to create

the 2GFSK settings and required frame data, which is supposed to be transmitted.

9. Set the modulation settings as shown in Figure 41. These settings should

be exactly the same as given for RX demodulation in SIGFOX specification

PRS_UNB_MODEM_RCZX.pdf (location: nxp.com/OM2385).

10.Select data list as the data source and fill the GFSK frame AA AA B2 27 1F 20 41

84 32 68 C5 BA 53 AE 79 E7 F6 DD 9B in the data list as shown in the figure below.

(Check the figures in Section 7.3.5 "LBT testing for RCZ3" for RCZ3 to know more

about data list creation)

11.The settings for sending the frame on the right frequency are done now. Connect an

RF cable from the signal generator to the OL2385.

12.Connect the P20 (marked on the backside of the board or within schematics) on the

OL2385 board with RXD of the FTDI cable as shown in the figure below (usually a

yellow wire). Connect the other end of the USB cable to the PC.

13.Download a terminal program of your choice. This example is the terminal program

Putty.

14.Open the terminal program.

15.Fill the putty settings as per the diagram below (com port number and speed are main

settings). Click on

Open to start the putty program.

16.Choose

Send test mode SPI command: Type 14, and then press Enter; type 3 as

test mode, and then press Enter; type number of frames as test mode config... and

press Enter. This will start the receiver of the device, which waits for the frames to be

received.

17.The device is now listening and waiting for the frames. Click on the check box on the

RF/A Mod block of the block diagram on the signal generator to start RF transmission

of the frame.

18.If all of the above steps were completed correctly, Passed RSSI = –80 dBm or Failed

RSSI = –80 dBm will appear on the putty terminal as shown in Figure 43. This means

the device successfully received the frames. If you do not see anything, the device

is not correctly calibrated for static frequency, is not matched correctly for RX, or the

transmission power level is too low.

OL2385SWUG Datasheet(PDF) 56 Page - NXP Semiconductors

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