DSK 6713 and

TMS320C6713

STDS - Sistemas de Telecomunicações

Definidos por Software

PSTR – Processamento de Sinal em Tempo Real

Goals and Summary• Goals

• DSP TMS320C6713: main features and integrated development environment

• Summary

• The TMS320C6x processors family

• DSK- Developers Starter Kit C6713

• BSL – Board Support Library

• IDE – Integrated Development Environment

• Some software examples

Inverno 2017/2018 2

TMS320C67x processor family

• Floating-point DSP

• High performance DSP: several instructions on a single clock

• Audio, image, instrumentation and control applications

• Texas Instruments: “These devices are ideal forprofessional audio products, mixers, audio synthesis,instrument / amplifier modeling, audio conferencing andbroadcast; biometrics, medical, industrial, digital imaging,speech recognition and voice-over packet.”

Inverno 2017/2018 3

TMS320C6713 Processor

• Load Store Architecture (32 registers)

• VLIW – Very Long Instruction Word, several 32 bit instructions, on a single clock cycle (up to 8 instructions)

• 225 MHz clock frequency

• Each cycle lasts 4.4 ns

• Executes up to:

• 1800 MIPS (Million Integer Operations per Second)

• 1350 MFLOPS (Million Floating-Point Operations per Second)

Inverno 2017/2018 4

DSK 6713 – DSP Starter Kit

Inverno 2017/2018 5

Daughter CardDaughter Card

Roomfor

Expansion

Internal

Memory

(192 kB)CPU

ProgramCache

DataCache

EMIF

SDRAM(8/16 MB)

CE2

CE3

Flash ROM(256 kB)

I/O Port

CE1

CE0

DSK 6713 – DSP Starter Kit

Inverno 2017/2018 6

DSK 6713 – DSP Starter Kit

Inverno 2017/2018 7

DSK 6713 – DSP Starter Kit• Developed by both Texas Instruments and

Spectrum Digital

• Main building blocks:• TMS320C6713 processor at 225 MHz (192 Kb of

internal RAM) • CPLD – Complex Programmable Logic Device (CPLD)• SDRAM – Synchronous Dynamic RAM (8 MB / 16 MB)• Flash – 512 kB • AIC23 – ADC e DAC, two stereo analog channels, with

sampling frequency from 8 kHz up to 96 kHz• 4 DIP switch and 4 LED• JTAG Interface for Target-Host communication

Inverno 2017/2018 8

DSK 6713 – DSP Starter Kit

• Analog interface:

• 2 analog stereo channels – microphone and line

• Sampling frequency ranges from 8 kHz up to 96 kHz

• Input and output interfaces:

• Input - 4 DIP switch

• Output - 4 LED

Inverno 2017/2018 9

BSL – Board Support Library

• API written in ‘C’

• Interface with DSK peripherals

• It has five internal modules:• Board Setup – Main Board

• Codec – AIC23 (ADC and DAC) configuration

• DIP – DIP switches read

• LED - Write on the LED

• Flash - Flash Programming

Inverno 2017/2018 10

BSL – Board Support Library

• Board Setup – board initialization

• DSK6713_init() Initialize the 6713 DSK

• DSK6713_rget() Read a 16-bit value from a CPLD register

• DSK6713_rset() Write a 16-bit value to a CPLD register

• DSK6713_version() Get the DSK version

• DSK6713_wait() Spin in a software delay loop

• DSK6713_waitusec() Spin in a software delay loop (microseconds)

• Prototypes in file "dsk6713.h"

Inverno 2017/2018 11

AIC23 – Analog Interface Controler

Inverno 2017/2018 12

ADC and DAC on the same chip 2 analog stereo channels, with sampling frequencies from 8 kHz up to 96 kHz McBSP0 for command data and McBSP1 for user data

CODEC – AIC23 - Features

• Two analog stereo channels

• Pre-amplification stage for microphone input

• Loudspeaker direct connection

• Sampling frequencies in the set: 8, 16, 24, 32, 44, 48, and 96 kHz

• Quantization with 16, 20, 24, or 32 bit

Inverno 2017/2018 13

CODEC – AIC23 - Interface

• DSK6713_AIC23_openCodec() Get and handle to the CODEC• DSK6713_AIC23_closeCodec() Release an handle• DSK6713_AIC23_config() CODEC configuration (sampling rate)• DSK6713_AIC23_read() Read a 32 bit data word• DSK6713_AIC23_write() Write a 32 bit data word• DSK6713_AIC23_setFreq() Set the sampling frequency

• DSK6713_AIC23_rset() Write on a control register• DSK6713_AIC23_rget() Read a control register value• DSK6713_AIC23_outGain() Set the output gain• DSK6713_AIC23_loopback() Enable/disable the loop-back mode• DSK6713_AIC23_mute() Enable/disable the mute mode• DSK6713_AIC23_powerDown() Enable/disable the powerdown mode

Inverno 2017/2018 14

Prototypes in file "dsk6713_aic23.h"

DIP-Switch and LED - Interface

• DIP

• DSK6713_DIP_init() Initialize the DIP switch

• DSK6713_DIP_get() Read the DIP switch

• LED

• DSK6713_LED_init() LED initialization

• DSK6713_LED_off() Turn off a given LED

• DSK6713_LED_on() Turn on a given LED

• DSK6713_LED_toggle() Toggle a given LED state

Inverno 2017/2018 15

Prototypes in files "dsk6713_dip.h“ and "dsk6713_led.h“, respectively

Sample Programs/Projects

1. IdentityPolling• y[n]=x[n] operation, with polling

2. IdentityInterrupt• y[n]=x[n] operation, with an interrupt routine

3. Led DIP • Example of the use of the LED and DIP Switch

4. SinusoidalGenerator• Example of sinusoidal generator, with a 2 kHz sinusoid

Inverno 2017/2018 16

1 - IdentityPolling – main program

int main(){

DSK6713_AIC23_CodecHandle hCodec; // Handle para o AIC.Int16 xl, xr, yl, yr; // Amostra de entrada e de saída

DSK6713_init(); // Iniciar a BSL (Board Support Library). //hCodec = DSK6713_AIC23_openCodec(0, &config_LINE ); // Programar ADC e DAChCodec = DSK6713_AIC23_openCodec(0, &config_MIC ); //DSK6713_AIC23_setFreq( hCodec, DSK6713_AIC23_FREQ_32KHZ );

for ( ; ; ) { // Leitura do canal esquerdo e do canal direito.xl = (Int16) MCBSP_read(DSK6713_AIC23_DATAHANDLE);xr = (Int16) MCBSP_read(DSK6713_AIC23_DATAHANDLE); // Eco.yl = xl; yr = xr;// Escrita do canal esquerdo e do canal direito.MCBSP_write(DSK6713_AIC23_DATAHANDLE, yl);MCBSP_write(DSK6713_AIC23_DATAHANDLE, yr);

}// Fechar o codec.//DSK6713_AIC23_closeCodec(hCodec); //return 0;

}

Inverno 2017/2018 17

1 - IdentityPolling – setup the AIC23 codec#include "dsk6713.h"#include "dsk6713_aic23.h"

// Codec configuration settingsDSK6713_AIC23_Config config_LINE = { \

0x0017, /* 0 DSK6713_AIC23_LEFTINVOL Left line input channel volume */ \0x0017, /* 1 DSK6713_AIC23_RIGHTINVOL Right line input channel volume */ \0x00d8, /* 2 DSK6713_AIC23_LEFTHPVOL Left channel headphone volume */ \0x00d8, /* 3 DSK6713_AIC23_RIGHTHPVOL Right channel headphone volume */ \0x0012, /* 4 DSK6713_AIC23_ANAPATH Analog audio path control - LINE */ \0x0000, /* 5 DSK6713_AIC23_DIGPATH Digital audio path control */ \0x0000, /* 6 DSK6713_AIC23_POWERDOWN Power down control */ \0x0043, /* 7 DSK6713_AIC23_DIGIF Digital audio interface format */ \0x0081, /* 8 DSK6713_AIC23_SAMPLERATE Sample rate control */ \0x0001 /* 9 DSK6713_AIC23_DIGACT Digital interface activation */ \

};

int main(){

DSK6713_AIC23_CodecHandle hCodec; // Handle for AIC23.DSK6713_init(); // Initialize BSL (Board Support Library).

hCodec = DSK6713_AIC23_openCodec(0, &config_LINE ); // Setup AIC23....

Inverno 2017/2018 18

2 - IdentityInterrupt – main programinterrupt void serialPortRcvISR(void);float volumeGain;

void main(){

DSK6713_AIC23_CodecHandle hCodec;DSK6713_init(); // Initialize the board support library, must be called first

hCodec = DSK6713_AIC23_openCodec(0, &config_MIC);

MCBSP_FSETS(SPCR1, RINTM, FRM);MCBSP_FSETS(SPCR1, XINTM, FRM);MCBSP_FSETS(RCR1, RWDLEN1, 16BIT);MCBSP_FSETS(XCR1, XWDLEN1, 16BIT);

volumeGain = 0.5;

IRQ_globalDisable(); // Globally disables interruptsIRQ_nmiEnable(); // Enables the NMI interruptIRQ_map(IRQ_EVT_RINT1,15); // Maps an event to a physical interruptIRQ_enable(IRQ_EVT_RINT1); // Enables the eventIRQ_globalEnable(); // Globally enables interrupts

while(1) { }}

Inverno 2017/2018 19

2 – IdentityInterrupt – interrupt routine detailinterrupt void serialPortRcvISR(){

Int16 xl, xr, yl, yr;// Leitura do canal esquerdo e do canal direito.xl = (Int16) MCBSP_read(DSK6713_AIC23_DATAHANDLE);xr = (Int16) MCBSP_read(DSK6713_AIC23_DATAHANDLE);// Eco.yl = xl; yr = xr; // Escrita do canal esquerdo e do canal direito.MCBSP_write(DSK6713_AIC23_DATAHANDLE, yl);MCBSP_write(DSK6713_AIC23_DATAHANDLE, yr);

}

Inverno 2017/2018 20

.ref _c_int00

.ref _serialPortRcvISR ; refer the address of ISR defined in C

.sect "vectors"

……

INT15: MVKL .S2 _serialPortRcvISR, B0MVKH .S2 _serialPortRcvISR, B0B .S2 B05*NOP

Vectors.asm

Set the interrupt routine (written in ‘C’) to the entry number 15.

3 - DIP and LED usage#include "dsk6713.h"#include "dsk6713_led.h"#include "dsk6713_dip.h"

void main(){

DSK6713_init(); // Initialize the board support library, must be first BSL callDSK6713_LED_init(); // Initialize the LED and DIP switch modules of the BSLDSK6713_DIP_init();

while(1) {DSK6713_LED_toggle(0); // Toggle LED #0

// Check DIP switch #3 and light LED #3 accordingly, 0 = switch pressedif (DSK6713_DIP_get(3) == 0)

// Switch pressed, turn LED #3 onDSK6713_LED_on(3);

else// Switch not pressed, turn LED #3 off */DSK6713_LED_off(3);

// Spin in a software delay loop for about 200msDSK6713_waitusec(200000);

} }

Inverno 2017/2018 21

4 – Sinusoidal Generator

#include "dsk6713.h"…..

int main()

{

Int16 y[4] = { 10000, 0, -10000, 0 };

Int16 i=0;

DSK6713_AIC23_setFreq( hCodec, DSK6713_AIC23_FREQ_8KHZ );

…..

for ( ; ; ) {

while ( !DSK6713_AIC23_read(hCodec, &xl) );

while ( !DSK6713_AIC23_read(hCodec, &xr) );

while ( !DSK6713_AIC23_write(hCodec, y[i]) );

while ( !DSK6713_AIC23_write(hCodec, y[i]) );

if (++i==4)

i=0;

}

return 0;

}Inverno 2017/2018 22

Code Composer Studio V6

Inverno 2017/2018 23

Bibliography

• Technical data sheets:

• TMS320C6713C - Tms320c6713.pdf

• DSK6713 - Dsk6713_TechRef.pdf

• BSL - BSL API.pdf

• AIC23 - Tlv320aic23b manual.pdf

• Code Composer - CC_Manual.pdf

Inverno 2017/2018 24