CCx

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This driver aims to provide a generic API for Texas Instrument's CC110L/CC1101 line of RF transceivers. It tries to wrap up some of the quirks in dealing with these components, so they they don't have to be repeated for each MCU port.

As TI have made many of the registers common across the CC1100 and CC2500 range, this driver should be compatible with other parts. Please notes that it is possible CC110L/CC1101 specific features are used in this driver and the examples.

Modules

This driver has three core modules:

• CCxxxx The abstraction layer which should provide a platform independent interface to the CC1101/CCxxxx.
• QuickStart Convenience functions which depend on the CCxxxx abstraction layer. They demonstrate one particular configuration of the device, using the register configurations from TI's slaa325a example code.
• SPI The hardware specific part of this driver and will need to be tailored for the Microcontroller being used. The functionality required to be implemented can be found in src/spi/ccx_spi.h. Some example implementations of this can be found in src/spi/ports.

Usage

CCX

The file src/ccx.mk tries to quickly bring in the relevant files to your build system. It should be sourced in your project Makefile and will provide the following variables:

• CCX_CSRC - C source files
• CCX_INC - include directories
• CCX_DEF - List of defines for the C preprocessor

An example of using this is available at examples/msp_exp430g2_transceiver/Makefile.

In order to use the CCX API you should:

• Source src/ccx.mk in your project Makefile
• Add CCX_CSRC to your C source/CSRC
• Add CCX_INC to your includes/INC
• Add CCX_DEF to your compiler flags/CFLAGS
• Include ccx_api.h in your C files

Quickstart

To bring in Quickstart you should follow the steps above to use the CCX module. Additionally, before sourcing src/ccx.mk in your project Makefile you should:

• Set CCX_QS_FREQ to be either 315, 433, 868, 915, 2400
• Set CCX_QS_CONNECTED_GDO to be either 0 or 2 to set the receive interrupt as either GD0 or GD2

Ensure that you include ccx_quickstart.h in your relevant C files.

Debug

The following variables can be set in your Makefile before sourcing src/ccx.mk to provide some convenient debugging.

• Set CCX_LOG_ERRORS to 1 to enable a user defined logging function (ccxErrorLog) to be called when an error is encountered.
• Set CCX_TESTS to 1 to compile in a small group of tests. These can be called with ccxRunTests.

Resources

CC1101

• CC1101 Datasheet

CC110L

• CC110L Datasheet

Family

• SPI Design Note DN503 (CC1100/CC1101/CC1150/CC2500/CC2550)
• MSP430 Interface to CC1100/2500 Code LibraryTI (slaa235a)