Code examples, Header file & crc-16 function, 4 code examples – PNI SeaTRAX User Manual

Page 63: 1 header file & crc-16 function

PNI Sensor Corporation

DOC#1018154 r02

SeaTRAX User Manual

Page 58

7.4

Code Examples

The following example files, CommProtocol.h, CommProtocol.cp, SeaTRAX.h and

SeaTRAX.cp would be used together for proper communication with a SeaTRAX module.

Note: The following files are not included in the sample codes and need to be created by the user:
Processes.h & TickGenerator.h. The comments in the code explain what is needed to be sent or
received from these functions so the user can write this section f

or the user’s platform. For example,

with the TickGenerator.h, the user needs to write a routing that generates 10 msec ticks.

7.4.1

Header File & CRC-16 Function

// type declarations
typedef struct
{

UInt8 AcquisitionMode, FlushFilter;

Float32 AcquireDelay, SampleDelay;

} __attribute__ ((packed)) AcqParams;

typedef struct
{

Float32 MagCalScore;

Float32 reserve1;

Float32 AccelCalScore;

Float32 DistError;

Float32 TiltError;

Float32 TiltRange;

} __attribute__ ((packed)) MagCalScore;

enum
{

// Frame IDs (Commands)

kGetModInfo = 1,

// 1

kGetModInfoResp,

// 2

kSetDataComponents,

// 3

kGetData,

// 4

kGetDataResp,

// 5

kSetConfig,

// 6

kGetConfig,

// 7

kGetConfigResp,

// 8

kSave,

// 9

kStartCal,

// 10

kStopCal,

// 11

kSetFilters,

// 12

kGetFilters,

// 13

kGetFiltersResp,

// 14

kPowerDown,

// 15

kSaveDone,

// 16

kUserCalSampCount,

// 17

kMagCalScore,

// 18