Guidelines for the ADS8330 Example Project for the TMS320C6000 DSP family

1. Legal Notes
2. Hardware Settings
3. Software

3.1 Development Environment

3.2 Project Directory

3.3 DCP Settings

3.4 Application Settings

3.5 Code Composer Studio Settings

3.6 Exposed Functions

3.7 Additional Notes

1. Legal Notes

By using this program you agree to the terms of the Legal notes

2. Hardware Settings

Converter Board

General Information

Name	: ADS8330M EVM
Partnumber	: ???
Revision	: Preliminary
Literature Number	: ???
Vendor	: Texas Instruments

Jumper Settings

Designator	Position
W1	1-2
W2	1-2
W4	1-2
W5	1-2
W6	1-2
W7	2-3
W8	3-4
W9	closed

External Signal Connections

This section shows all external signals mandatory to successfully run the example project.

Apply a Analog Signal with the following parameters:

`- type`	`: Sine`
`- frequency`	`: 1kHz`
`- voff`	`: 2.0V`
`- vpp`	`: 4.0V`
`- connector`	`: J2`
`- r`	`: HI-Z`

Interface Board

General Information

Name	: 5-6K Interface EVM
Partnumber	: 5-6KINTERFACE
Revision	: B
Literature Number	: SLAU104B
Vendor	: Texas Instruments

Jumper Settings

Designator	Position
W2	2-3
W3	2-3
W9	1-2
W11	1-2
Other	don't care

Power Connections

This section shows all external power connection needed to run the example project.

Apply a voltage for the Analog Section with the following parameters:

`- voltage`	`: -/+6V`
`- signal`	`: -/+VA`
`- connector`	`: J1`

Apply a voltage for the Analog Section with the following parameters:

`- voltage`	`: +5V`
`- signal`	`: +5VA`
`- connector`	`: J2`

DSP Board

General Information

Name	: TMS320C6713 DSK
Partnumber	: N/A
Revision	: A
Literature Number	: N/A
Vendor	: Spectrum Digital

Switch Settings

Designator	Position
SW3.1	off
SW3.2	off
SW3.3	off
SW3.4	off

Power Connections

This section shows all external power connection needed to run the example project.

Apply a voltage for the DSP Section with the following parameters:

`- voltage`	`: +5V`
`- signal`	`: +5V`
`- connector`	`: J5`

Additional Hardware Notes

Connecting the ADS8330EVM to the 5/6k I/F EVM

Connect the ADS8330EVM to J10/J16/JP5 so it is connected to McBSP0/Timer1/ExtInt6. The example project uses these resources.

3. Software

3.1 Development Environment

Code Composer Studio version	: 3.10
Project Name	: ADS8330-DSK6713-CCS3v1

3.2 Project Directory

Project Directory Name: ADS8330-DSK6713-CCS3v1

- [Debug]

- ADS8330-DSK6713-CCS3v1.map

- ADS8330-DSK6713-CCS3v1.out

- [Release]

- ADS8330-DSK6713-CCS3v1.map

- ADS8330-DSK6713-CCS3v1.out

- dc_conf.h
- main.c
- t8330_fn.h
- t8330_ob.c
- ads8330.cdb
- ads8330cfg.cmd
- ads8330cfg.h
- ads8330cfg.h62
- ads8330cfg.s62
- ads8330cfg_c.c
- ADS8330-DSK6713-CCS3v1.pjt
- tidc_api.c
- tidc_api.h

Map file of the .out file (debug version)

Downloadable .out file (debug version)

Map file of the .out file (release version)

Downloadable .out file (release version)

Header file including defines for the converter and DSP based on GUI settings
Application layer file of the project
Header file of the generated interface software
Source file of the generated interface software
Configuration database (CDB) file of the project
Linker command file generated from the CDB
Header file generated from the CDB (you may include this in you source code)
Internal header file generated from the CDB
Internal source file generated from the CDB
Source file for initializing resources
Project file
Source file of translation layer for the DCP interface software
Header file of translation layer for the DCP interface software

3.3 DCP Settings

This section describes the graphical user interface configuration of both the DSP and the ADS8330 tabulator in the Data Converter Support Tool.
The interface software for this example project was generated using these settings.

DSP Tab Settings

`- DSP Type`	`: TMS320C6713`
`- DSP Clock`	`: 225`
`- Dispatcher in DSP/BIOS Used`	`: unchecked`

Converter Tab Settings

`- Analog Supply`	`: 3.3V`
`- Conversion Start`	`: CONVST pin`
`- Serial Port`	`: McBSP 0`
`- CONVST Source`	`: Timer 1`
`- CONVST Frequency [kHz]`	`: 969.828`
`- Interrupt Number`	`: Ext Int 6`

3.4 Application Settings

Sample Buffer

The Sample Buffer is a data field within the C source code where the samples read from the converter are stored in.
This data field is declared in the application file (main.c).
In this example project the Sample Buffer has the following parameter:

`- Name`	`: Buffer1`
`- Size`	`: 2048`
`- DataType`	`: unsigned int`
`- Name`	`: Buffer2`
`- Size`	`: 2048`
`- DataType`	`: unsigned int`

3.5 Code Composer Studio Settings

How To Display Data Samples

This section describes how to graphically watch samples collected from the data converter and, thus, verify the proper work of the converter.

1. Start Code Composer Studio

2. Open the Project

3. Download the $PrjDir\Debug\ADS8330-DSK6713-CCS3v1.out file to the DSP (DO NOT recompile)

4. Open two Graph Window (parameters are listed below)

5. Run the Program

6. Stop the Program

7. You should see the collected data samples in the graph window.

8. Since channel 0 has an analog signal and channel 1 is grounded the graph will look like a color filled sine wave (channel 0 and 1 are interleaved)."

Parameter for the Graph Window(s):

`- Start Address`	`: Buffer1`
`- Acquisition Buffer Size`	`: 2048`
`- Display Data Size`	`: 2048`
`- DSP Data Type`	`: 32-bit unsigned integer`
`- Autoscale`	`: off`
`- Maximum Y-value`	`: 1048568`

`- Start Address`	`: Buffer2`
`- Acquisition Buffer Size`	`: 2048`
`- Display Data Size`	`: 2048`
`- DSP Data Type`	`: 32-bit unsigned integer`
`- Autoscale`	`: off`
`- Maximum Y-value`	`: 1048568`

Since no compiling took place by now (software is binary the same as during the creation of this example project) the user can check the hardware.
In case the system does not work as expected the problem lies most probably in the hardware.

3.6 Exposed Functions

None.

3.7 Additional Notes

Channel Sorting

Channel sorting is not supported by the software. Because of speed issues the data samples are "read as they come". Thus, it is not determinable whether samples of channel 0 or channel 1 are located at odd/even memory locations in the buffer. The application layer has to check for the TAG flag (bit 3) to determine the channel the data sample comes from.

Reading a Single Sample

Because of the problem described in "Channel Sorting" above the software will read two consecutive data and packs them into the "long" data type, which is 40bit wide. Each data samples takes 20bit (16 bit data sample, 1 bit TAG, 3 trailing '0'). The first read will be copied to the upper 20bit the second read to the lower 20bit. The application needs to identify the requested channel be checking the TAG bit (bit 23 for the first read, bit 3 for the second read).

Shift/Mask of Data Samples

The data samples are not shifted or masked. To get the sample values a right shift by 4 is needed.

Serial Port Speed

The serial port clock should be greater than 32MHz to ensure data are read before the next conversion starts.

Serial Port Speed Issue

During development of this software communication problems occured at frequencies near the converter serial port limit.

Converter Read Mode

This software read the data from the converter in "Read-while-Converting" mode.

Conversion Clock

The converter uses the internal oscillator as conversion clock only (no serial port clock support).

Pin 10 Function

Pin 10 is set to EOC functionality always.

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Guidelines for the ADS8330 Example Project for the TMS320C6000 DSP family

Table of Contents

General Information

Jumper Settings

External Signal Connections

General Information

Jumper Settings

Power Connections

General Information

Switch Settings

Power Connections

Connecting the ADS8330EVM to the 5/6k I/F EVM

DSP Tab Settings

Converter Tab Settings

Sample Buffer

How To Display Data Samples

Channel Sorting

Reading a Single Sample

Shift/Mask of Data Samples

Serial Port Speed

Serial Port Speed Issue

Converter Read Mode

Conversion Clock

Pin 10 Function