Gets almanac data from a SiRF receiver

Returns GPSERROR_NONE on success or GPSERROR_CONFIG on failure.

• Call SiRFPollAlmanac before this function to cause the receiver to output the data

• The almanac data is stored in the code as a 448-element array of INT16 values. These 448 elements are partitioned as 32 x 14 elements where the 32 represents the satellite number minus 1 and the 14 represents the number of INT16 values associated with this satellite. The data is packed; the exact format of this representation and packing method can be extracted from the ICD-GPS-2000 document. The ICD-GPS- 2000 document describes the data format of each GPS navigation sub-frame and is available on the web at http://www.arinc.com/gps.

• The user is responsible for allocating and freeing the memory for the parameter(s).

SIRF_ALMANAC_ALLOCATION_SIZE_IN_BYTES, SiRFPollAlmanac

SiRF Specific functions

GPSERROR GPSAPI SirfGetAlmanac(void * pAlmanac);

sirfapi.h

SiRF Specific functions, See Also