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NXP Semiconductors

OL2385SWUG

SIGFOX software driver

OL2385SWUG

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User guide

Rev. 2.1 — 6 April 2018

28 / 64

6.2.4.4 SPI command descriptions

For details of each command, refer to SIGFOX SPI Command Interface Description.xls

at:

www.nxp.com/products/software-and-tools/hardware-development-tools/freedom-

development-boards/om2385-sf001-ol2385-wireless-sub-ghz-transceiver-sigfox-

development-kit-with-kl43z:OM2385-SF001?tab=Documentation_Tab

6.2.4.5 Low-level drivers

This section describes the low-level MCU peripheral drivers used by the SIGFOX

software driver. The SIGFOX driver depends on these low-level drivers for functions such

as communication and control.

Because the SIGFOX software driver is built on AML, it has access to a subset of low-

level drivers supported by the underlying SDK. Most analog devices require that some

of the SPI, I2C, Timer, ADC and GPIO drivers be configured on the MCU side. The AML

layer unifies the API for these selected drivers, making the software driver portable

across SDKs.

Figure 20 illustrates the software driver architecture in terms of communication and

control.

Figure 20. Software driver architecture

6.2.4.6 Required driver setup

In order to execute correctly, the SIGFOX software driver requires the following:

• In the file aml/common_aml.h, the SDK_VERSION macro must indicate which SDK is

being used.

• In the file sf/sf_model.h, the SF_MODEL macro must indicate which SIGFOX model

is being used. Setting this parameter enables the driver to make the necessary

adjustments required to support the model.

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