Datalog Test

Table of Contents

• Files and directory structure
• Supported Combinations
• Steps to Run the Example
  • Build, load and run
  • Sample Output

Simple data logging test incorporating datalog library with user configurable parameters as follows:

Parameters	Values
Number of data log channels	4
Buffer size	400
Data type	32bit floating point
Trigger type	Auto trigger
Trigger Value	5.0
Prescalar/size	1

This example verifies data logging capability and showcases datalog API usage. In this example, one float variable (i) will be incremented by "1" in every loop starting with "0" and with trigger value as "5". The *iptr[0] value will be monitored with auto trigger type and if it crosses the trigger value, data logging is initiated and values provided to *iptr[] will be logged for every prescalar loop.

In datalog_input.h, users can use the following defines as per data type:

Data type	Defines
32 bit signed integer	u_int32_t
32 bit unsigned integer	u_uint32_t
64 bit signed integer	u_int64_t
64 bit floating point	u_float64_t
32 bit floating point	u_float32_t
16 bit signed integer	u_int16_t
16 bit unsigned integer	u_uint16_t
8 bit signed integer	u_int8_t
8 bit unsigned integer	u_uint8_t

Files and directory structure

Folder/Files	Description
main.c	Main function for datalog library testing
datalog_test.c	Contains all initialization of test structures and variables with datalog functionality
datalog.c	datalog library source file
datalog.h	datalog library header file at "${SDK_INSTALL_PATH}/source/rtlibs/utilities/datalog/include"
datalog_input.h	User configurable datalog header file needed to be changed at "${SDK_INSTALL_PATH}/source/rtlibs/utilities/datalog/include"
datalog.syscfg	syscfg file for application

Supported Combinations

Steps to Run the Example

Build, load and run

• When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects ).
• When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles ).
• Launch a CCS debug session and run the executable, see CCS Launch, Load and Run

Sample Output

Shown below is a sample output when the application is run and datalog output is observed in datalogBuff[][]:

Datalog Buffer values in expression window of CCS

- Datalog initiated with manual trigger!!
- Data-log buffers are updated!!
- Test passed!!