Datalog Test

Table of Contents

• Files and directory structure
• Supported Combinations
• Steps to Run the Example
  • Sample Output

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

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

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

In datalog_input.h, user can use 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 strctures and variables with datalog functionality
datalog.c	datalog library source file
datalog.h	datalog library header file at "${SDK_INSTALL_PATH}/source/utilities/datalog/include"
datalog_input.h	User configurable datalog header file need to be changed at "${SDK_INSTALL_PATH}/source/utilities/datalog/include"
datalog.syscfg	syscfg file for application

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 nortos
	r5fss0-0 freertos
Toolchain	ti-arm-clang
Boards	am263x-cc
Example folder	examples/utilities/datalog

Steps to Run the Example

• 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 observed in datalogBuff[][]:

Datalog Buffer values in expression window of CCS

- Datalog initiated with Auto trigger!!
- Data-log buffers are updated !!