tms320f28044 query

bharadwaj acharya

Other Parts Discussed in Thread: TMS320F28044, CCSTUDIO

hi ,

actually I dont know where to post my query.

Iam using tms320f28044,and debugging it in code composer v3.3.during debugging one of the examples I had a problem with this GPIO exmple.

// TI File $Revision: /main/2 $

// Checkin $Date: July 17, 2006 16:23:00 $

//###########################################################################

// FILE: Example_2804xGpioSetup.c

// TITLE: DSP2804x Device GPIO Setup

// ASSUMPTIONS:

// This program requires the DSP2804x header files.

// Two different examples are included. Select the example

// to execute before compiling using the #define statements

// found at the top of the code.

// As supplied, this project is configured for "boot to SARAM"

// operation. The 2804x Boot Mode table is shown below.

// For information on configuring the boot mode of an eZdsp,

// please refer to the documentation included with the eZdsp,

// Boot GPIO18 GPIO29 GPIO34

// Mode SPICLKA SCITXDA

// SCITXB

// -------------------------------------

// Flash 1 1 1

// SCI-A 1 1 0

// SPI-A 1 0 1

// I2C-A 1 0 0

// ECAN-A 0 1 1

// SARAM 0 1 0 <- "boot to SARAM"

// OTP 0 0 1

// I/0 0 0 0

// DESCRIPTION:

// Configures the 2804x GPIO into two different configurations

// This code is verbose to illustrate how the GPIO could be setup.

// In a real application, lines of code can be combined for improved

// code size and efficency.

// This example only sets-up the GPIO.. nothing is actually done with

// the pins after setup.

// In general:

// All pullup resistors are enabled. For ePWMs this may not be desired.

// Input qual for communication ports (eCAN, SPI, SCI, I2C) is asynchronous

// Input qual for Trip pins (TZ) is asynchronous

// Input qual for eCAP and eQEP signals is synch to SYSCLKOUT

// Input qual for some I/O's and interrupts may have a sampling window

//###########################################################################

// $TI Release: DSP2804x C/C++ Header Files V1.30 $

// $Release Date: July 27, 2009 $

//###########################################################################

#include "DSP2804x_Device.h" // DSP2804x Headerfile Include File

#include "DSP2804x_Examples.h" // DSP2804x Examples Include File

// Select the example to compile in. Only one example should be set as 1

// the rest should be set as 0.

#define EXAMPLE1 1 // Basic pinout configuration example

#define EXAMPLE2 0 // Communication pinout example

// Prototype statements for functions found within this file.

void Gpio_setup1(void);

void Gpio_setup2(void);

void main(void)

{

// Step 1. Initialize System Control:

// PLL, WatchDog, enable Peripheral Clocks

// This example function is found in the DSP2804x_SysCtrl.c file.

InitSysCtrl();

// Step 2. Initalize GPIO:

// This example function is found in the DSP2804x_Gpio.c file and

// illustrates how to set the GPIO to it's default state.

// InitGpio(); Skipped for this example

// Step 3. Clear all interrupts and initialize PIE vector table:

// Disable CPU interrupts

DINT;

// Initialize PIE control registers to their default state.

// The default state is all PIE interrupts disabled and flags

// are cleared.

// This function is found in the DSP2804x_PieCtrl.c file.

InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:

IER = 0x0000;

IFR = 0x0000;

// Initialize the PIE vector table with pointers to the shell Interrupt

// Service Routines (ISR).

// This will populate the entire table, even if the interrupt

// is not used in this example. This is useful for debug purposes.

// The shell ISR routines are found in DSP2804x_DefaultIsr.c.

// This function is found in DSP2804x_PieVect.c.

InitPieVectTable();

// Step 4. Initialize all the Device Peripherals:

// This function is found in DSP2804x_InitPeripherals.c

// InitPeripherals(); // Not required for this example

// Step 5. User specific code:

#if EXAMPLE1

// This example is a basic pinout

Gpio_setup1();

#endif // - EXAMPLE1

#if EXAMPLE2

// This example is a communications pinout

Gpio_setup2();

#endif

}

void Gpio_setup1(void)

{

// Example 1:

// Basic Pinout.

// This basic pinout includes:

// PWM1-3, ECAP1, ECAP2, TZ1-TZ4, SPI-A, EQEP1, SCI-A, I2C

// and a number of I/O pins

// These can be combined into single statements for improved

// code efficiency.

// Enable PWM1-3 on GPIO0-GPIO5

EALLOW;

GpioCtrlRegs.GPAPUD.bit.GPIO0 = 0; // Enable pullup on GPIO0

GpioCtrlRegs.GPAPUD.bit.GPIO1 = 0; // Enable pullup on GPIO1

GpioCtrlRegs.GPAPUD.bit.GPIO2 = 0; // Enable pullup on GPIO2

GpioCtrlRegs.GPAPUD.bit.GPIO3 = 0; // Enable pullup on GPIO3

GpioCtrlRegs.GPAPUD.bit.GPIO4 = 0; // Enable pullup on GPIO4

GpioCtrlRegs.GPAPUD.bit.GPIO5 = 0; // Enable pullup on GPIO5

GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1; // GPIO0 = PWM1A

GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1; // GPIO1 = PWM1B

GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1; // GPIO2 = PWM2A

GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1; // GPIO3 = PWM2B

GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 1; // GPIO4 = PWM3A

GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 1; // GPIO5 = PWM3B

// Enable an GPIO output on GPIO6, set it high

GpioCtrlRegs.GPAPUD.bit.GPIO6 = 0; // Enable pullup on GPIO6

GpioDataRegs.GPASET.bit.GPIO6 = 1; // Load output latch

GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 0; // GPIO6 = GPIO6

GpioCtrlRegs.GPADIR.bit.GPIO6 = 1; // GPIO6 = output

// Enable eCAP1 on GPIO7

GpioCtrlRegs.GPAPUD.bit.GPIO7 = 0; // Enable pullup on GPIO7

GpioCtrlRegs.GPAQSEL1.bit.GPIO7 = 0; // Synch to SYSCLOUT

GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 3; // GPIO7 = ECAP2

// Enable GPIO outputs on GPIO8 - GPIO11, set it high

GpioCtrlRegs.GPAPUD.bit.GPIO8 = 0; // Enable pullup on GPIO8

GpioDataRegs.GPASET.bit.GPIO8 = 1; // Load output latch

GpioCtrlRegs.GPAMUX1.bit.GPIO8 = 0; // GPIO8 = GPIO8

GpioCtrlRegs.GPADIR.bit.GPIO8 = 1; // GPIO8 = output

GpioCtrlRegs.GPAPUD.bit.GPIO9 = 0; // Enable pullup on GPIO9

GpioDataRegs.GPASET.bit.GPIO9 = 1; // Load output latch

GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 0; // GPIO9 = GPIO9

GpioCtrlRegs.GPADIR.bit.GPIO9 = 1; // GPIO9 = output

GpioCtrlRegs.GPAPUD.bit.GPIO10 = 0; // Enable pullup on GPIO10

GpioDataRegs.GPASET.bit.GPIO10 = 1; // Load output latch

GpioCtrlRegs.GPAMUX1.bit.GPIO10 = 0; // GPIO10 = GPIO10

GpioCtrlRegs.GPADIR.bit.GPIO6 = 1; // GPIO10 = output

GpioCtrlRegs.GPAPUD.bit.GPIO11 = 0; // Enable pullup on GPIO11

GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 0; // GPIO11 = GPIO11

GpioCtrlRegs.GPADIR.bit.GPIO11 = 1; // GPIO11 = output

// Enable Trip Zone inputs on GPIO12 - GPIO15

GpioCtrlRegs.GPAPUD.bit.GPIO12 = 0; // Enable pullup on GPIO12

GpioCtrlRegs.GPAPUD.bit.GPIO13 = 0; // Enable pullup on GPIO13

GpioCtrlRegs.GPAPUD.bit.GPIO14 = 0; // Enable pullup on GPIO14

GpioCtrlRegs.GPAPUD.bit.GPIO15 = 0; // Enable pullup on GPIO15

GpioCtrlRegs.GPAQSEL1.bit.GPIO12 = 3; // asynch input

GpioCtrlRegs.GPAQSEL1.bit.GPIO13 = 3; // asynch input

GpioCtrlRegs.GPAQSEL1.bit.GPIO14 = 3; // asynch input

GpioCtrlRegs.GPAQSEL1.bit.GPIO15 = 3; // asynch input

GpioCtrlRegs.GPAMUX1.bit.GPIO12 = 1; // GPIO12 = TZ1

GpioCtrlRegs.GPAMUX1.bit.GPIO13 = 1; // GPIO13 = TZ2

GpioCtrlRegs.GPAMUX1.bit.GPIO14 = 1; // GPIO14 = TZ3

GpioCtrlRegs.GPAMUX1.bit.GPIO15 = 1; // GPIO15 = TZ4

// Enable SPI-A on GPIO16 - GPIO19

GpioCtrlRegs.GPAPUD.bit.GPIO16 = 0; // Enable pullup on GPIO16

GpioCtrlRegs.GPAPUD.bit.GPIO17 = 0; // Enable pullup on GPIO17

GpioCtrlRegs.GPAPUD.bit.GPIO18 = 0; // Enable pullup on GPIO18

GpioCtrlRegs.GPAPUD.bit.GPIO19 = 0; // Enable pullup on GPIO19

GpioCtrlRegs.GPAQSEL2.bit.GPIO16 = 3; // asynch input

GpioCtrlRegs.GPAQSEL2.bit.GPIO17 = 3; // asynch input

GpioCtrlRegs.GPAQSEL2.bit.GPIO18 = 3; // asynch input

GpioCtrlRegs.GPAQSEL2.bit.GPIO19 = 3; // asynch input

GpioCtrlRegs.GPAMUX2.bit.GPIO16 = 1; // GPIO16 = SPICLKA

GpioCtrlRegs.GPAMUX2.bit.GPIO17 = 1; // GPIO17 = SPIS0MIA

GpioCtrlRegs.GPAMUX2.bit.GPIO18 = 1; // GPIO18 = SPICLKA

GpioCtrlRegs.GPAMUX2.bit.GPIO19 = 1; // GPIO19 = SPISTEA

// Enable EQEP1 on GPIO20 - GPIO23

GpioCtrlRegs.GPAPUD.bit.GPIO20 = 0; // Enable pullup on GPIO20

GpioCtrlRegs.GPAPUD.bit.GPIO21 = 0; // Enable pullup on GPIO21

GpioCtrlRegs.GPAPUD.bit.GPIO22 = 0; // Enable pullup on GPIO22

GpioCtrlRegs.GPAPUD.bit.GPIO23 = 0; // Enable pullup on GPIO23

GpioCtrlRegs.GPAQSEL2.bit.GPIO20 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAQSEL2.bit.GPIO21 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAQSEL2.bit.GPIO22 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAQSEL2.bit.GPIO23 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAMUX2.bit.GPIO20 = 1; // GPIO20 = EQEP1A

GpioCtrlRegs.GPAMUX2.bit.GPIO21 = 1; // GPIO21 = EQEP1B

GpioCtrlRegs.GPAMUX2.bit.GPIO22 = 1; // GPIO22 = EQEP1S

GpioCtrlRegs.GPAMUX2.bit.GPIO23 = 1; // GPIO23 = EQEP1I

// Enable eCAP1 on GPIO24

GpioCtrlRegs.GPAPUD.bit.GPIO24 = 0; // Enable pullup on GPIO24

GpioCtrlRegs.GPAQSEL2.bit.GPIO24 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAMUX2.bit.GPIO24 = 1; // GPIO24 = ECAP1

// Set input qualifcation period for GPIO25 & GPIO26

GpioCtrlRegs.GPACTRL.bit.QUALPRD3=1; // Qual period = SYSCLKOUT/2

GpioCtrlRegs.GPAQSEL2.bit.GPIO25=2; // 6 samples

GpioCtrlRegs.GPAQSEL2.bit.GPIO26=2; // 6 samples

// Make GPIO25 the input source for XINT1

GpioCtrlRegs.GPAMUX2.bit.GPIO25 = 0; // GPIO25 = GPIO25

GpioCtrlRegs.GPADIR.bit.GPIO25 = 0; // GPIO25 = input

GpioIntRegs.GPIOXINT1SEL.all = 25; // XINT1 connected to GPIO25

// Make GPIO26 the input source for XINT2

GpioCtrlRegs.GPAMUX2.bit.GPIO26 = 0; // GPIO26 = GPIO26

GpioCtrlRegs.GPADIR.bit.GPIO26 = 0; // GPIO26 = input

GpioIntRegs.GPIOXINT2SEL.all = 26; // XINT2 connected to GPIO26

// Make GPIO27 wakeup from HALT/STANDBY Low Power Modes

GpioCtrlRegs.GPAMUX2.bit.GPIO27 = 0; // GPIO27 = GPIO27

GpioCtrlRegs.GPADIR.bit.GPIO27 = 0; // GPIO27 = input

GpioIntRegs.GPIOLPMSEL.bit.GPIO27=1; // GPIO27 will wake the device

SysCtrlRegs.LPMCR0.bit.QUALSTDBY=2; // Qualify GPIO27 by 2 OSCCLK

// cycles before waking the device

// from STANDBY

// Enable SCI-A on GPIO28 - GPIO29

GpioCtrlRegs.GPAPUD.bit.GPIO28 = 0; // Enable pullup on GPIO28

GpioCtrlRegs.GPAQSEL2.bit.GPIO28 = 3; // Asynch input

GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 1; // GPIO28 = SCIRXDA

GpioCtrlRegs.GPAPUD.bit.GPIO29 = 0; // Enable pullup on GPIO29

GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 1; // GPIO29 = SCITXDA

// Enable CAN-A on GPIO30 - GPIO31

GpioCtrlRegs.GPAPUD.bit.GPIO30 = 0; // Enable pullup on GPIO30

GpioCtrlRegs.GPAMUX2.bit.GPIO30 = 1; // GPIO30 = CANTXA

GpioCtrlRegs.GPAPUD.bit.GPIO31 = 0; // Enable pullup on GPIO31

GpioCtrlRegs.GPAQSEL2.bit.GPIO31 = 3; // Asynch input

GpioCtrlRegs.GPAMUX2.bit.GPIO31 = 1; // GPIO31 = CANRXA

// Enable I2C-A on GPIO32 - GPIO33

GpioCtrlRegs.GPBPUD.bit.GPIO32 = 0; // Enable pullup on GPIO32

GpioCtrlRegs.GPBMUX1.bit.GPIO32 = 1; // GPIO32 = SDAA

GpioCtrlRegs.GPBQSEL1.bit.GPIO33 = 3; // Asynch input

GpioCtrlRegs.GPBPUD.bit.GPIO33 = 0; // Enable pullup on GPIO33

GpioCtrlRegs.GPBQSEL1.bit.GPIO33 = 3; // Asynch input

GpioCtrlRegs.GPBMUX1.bit.GPIO33 = 1; // GPIO33 = SCLA

// Make GPIO34 an input

GpioCtrlRegs.GPBPUD.bit.GPIO34 = 0; // Enable pullup on GPIO34

GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 0; // GPIO34 = GPIO34

GpioCtrlRegs.GPBDIR.bit.GPIO34 = 0; // GPIO34 = input

EDIS;

}

void Gpio_setup2(void)

{

// Example 1:

// Communications Pinout.

// This basic communications pinout includes:

// PWM1-3, CAP1, CAP2, SPI-A, SPI-B, CAN-A, SCI-A and I2C

// and a number of I/O pins

// Enable PWM1-3 on GPIO0-GPIO5

EALLOW;

GpioCtrlRegs.GPAPUD.bit.GPIO0 = 0; // Enable pullup on GPIO0

GpioCtrlRegs.GPAPUD.bit.GPIO1 = 0; // Enable pullup on GPIO1

GpioCtrlRegs.GPAPUD.bit.GPIO2 = 0; // Enable pullup on GPIO2

GpioCtrlRegs.GPAPUD.bit.GPIO3 = 0; // Enable pullup on GPIO3

GpioCtrlRegs.GPAPUD.bit.GPIO4 = 0; // Enable pullup on GPIO4

GpioCtrlRegs.GPAPUD.bit.GPIO5 = 0; // Enable pullup on GPIO5

GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1; // GPIO0 = PWM1A

GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1; // GPIO1 = PWM1B

GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1; // GPIO2 = PWM2A

GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1; // GPIO3 = PWM2B

GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 1; // GPIO4 = PWM3A

GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 1; // GPIO5 = PWM3B

// Enable an GPIO output on GPIO6

GpioCtrlRegs.GPAPUD.bit.GPIO6 = 0; // Enable pullup on GPIO6

GpioDataRegs.GPASET.bit.GPIO6 = 1; // Load output latch

GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 0; // GPIO6 = GPIO6

GpioCtrlRegs.GPADIR.bit.GPIO6 = 1; // GPIO6 = output

// Enable eCAP1 on GPIO7

GpioCtrlRegs.GPAPUD.bit.GPIO7 = 0; // Enable pullup on GPIO7

GpioCtrlRegs.GPAQSEL1.bit.GPIO7 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 3; // GPIO7 = ECAP2

// Enable GPIO outputs on GPIO8 - GPIO11

GpioCtrlRegs.GPAPUD.bit.GPIO8 = 0; // Enable pullup on GPIO8

GpioDataRegs.GPASET.bit.GPIO8 = 1; // Load output latch

GpioCtrlRegs.GPAMUX1.bit.GPIO8 = 0; // GPIO8 = GPIO8

GpioCtrlRegs.GPADIR.bit.GPIO8 = 1; // GPIO8 = output

GpioCtrlRegs.GPAPUD.bit.GPIO9 = 0; // Enable pullup on GPIO9

GpioDataRegs.GPASET.bit.GPIO9 = 1; // Load output latch

GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 0; // GPIO9 = GPIO9

GpioCtrlRegs.GPADIR.bit.GPIO9 = 1; // GPIO9 = output

GpioCtrlRegs.GPAPUD.bit.GPIO10 = 0; // Enable pullup on GPIO10

GpioDataRegs.GPASET.bit.GPIO10 = 1; // Load output latch

GpioCtrlRegs.GPAMUX1.bit.GPIO10 = 0; // GPIO10 = GPIO10

GpioCtrlRegs.GPADIR.bit.GPIO10 = 1; // GPIO10 = output

GpioCtrlRegs.GPAPUD.bit.GPIO11 = 0; // Enable pullup on GPIO11

GpioDataRegs.GPASET.bit.GPIO11 = 1; // Load output latch

GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 0; // GPIO11 = GPIO11

GpioCtrlRegs.GPADIR.bit.GPIO11 = 1; // GPIO11 = output

// Enable SPI-B on GPIO12 - GPIO15

GpioCtrlRegs.GPAPUD.bit.GPIO12 = 0; // Enable pullup on GPIO12 (SPISIMOB)

GpioCtrlRegs.GPAPUD.bit.GPIO12 = 0; // Enable pullup on GPIO13 (SPISOMIB)

GpioCtrlRegs.GPAPUD.bit.GPIO14 = 0; // Enable pullup on GPIO14 (SPICLKB)

GpioCtrlRegs.GPAPUD.bit.GPIO15 = 0; // Enable pullup on GPIO15 (SPISTEB)

GpioCtrlRegs.GPAQSEL1.bit.GPIO12 = 3; // asynch input

GpioCtrlRegs.GPAQSEL1.bit.GPIO13 = 3; // asynch input

GpioCtrlRegs.GPAQSEL1.bit.GPIO14 = 3; // asynch input

GpioCtrlRegs.GPAQSEL1.bit.GPIO15 = 3; // asynch input

GpioCtrlRegs.GPAMUX1.bit.GPIO12 = 3; // GPIO12 = SPISIMOB

GpioCtrlRegs.GPAMUX1.bit.GPIO13 = 3; // GPIO13 = SPISOMIB

GpioCtrlRegs.GPAMUX1.bit.GPIO14 = 3; // GPIO14 = SPICLKB

GpioCtrlRegs.GPAMUX1.bit.GPIO15 = 3; // GPIO15 = SPISTEB

// Enable SPI-A on GPIO16 - GPIO19

GpioCtrlRegs.GPAPUD.bit.GPIO16 = 0; // Enable pullup on GPIO16 (SPICLKA)

GpioCtrlRegs.GPAPUD.bit.GPIO17 = 0; // Enable pullup on GPIO17 (SPIS0MIA)

GpioCtrlRegs.GPAPUD.bit.GPIO18 = 0; // Enable pullup on GPIO18 (SPICLKA)

GpioCtrlRegs.GPAPUD.bit.GPIO19 = 0; // Enable pullup on GPIO19 (SPISTEA)

GpioCtrlRegs.GPAQSEL2.bit.GPIO16 = 3; // asynch input

GpioCtrlRegs.GPAQSEL2.bit.GPIO17 = 3; // asynch input

GpioCtrlRegs.GPAQSEL2.bit.GPIO18 = 3; // asynch input

GpioCtrlRegs.GPAQSEL2.bit.GPIO19 = 3; // asynch input

GpioCtrlRegs.GPAMUX2.bit.GPIO16 = 1; // GPIO16 = SPICLKA

GpioCtrlRegs.GPAMUX2.bit.GPIO17 = 1; // GPIO17 = SPIS0MIA

GpioCtrlRegs.GPAMUX2.bit.GPIO18 = 1; // GPIO18 = SPICLKA

GpioCtrlRegs.GPAMUX2.bit.GPIO19 = 1; // GPIO19 = SPISTEA

// Enable EQEP1 on GPIO20 - GPIO23

GpioCtrlRegs.GPAPUD.bit.GPIO20 = 0; // Enable pullup on GPIO20 (EQEP1A)

GpioCtrlRegs.GPAPUD.bit.GPIO21 = 0; // Enable pullup on GPIO21 (EQEP1B)

GpioCtrlRegs.GPAPUD.bit.GPIO22 = 0; // Enable pullup on GPIO22 (EQEP1S)

GpioCtrlRegs.GPAPUD.bit.GPIO23 = 0; // Enable pullup on GPIO23 (EQEP1I)

GpioCtrlRegs.GPAQSEL2.bit.GPIO20 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAQSEL2.bit.GPIO21 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAQSEL2.bit.GPIO22 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAQSEL2.bit.GPIO23 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAMUX2.bit.GPIO20 = 1; // GPIO20 = EQEP1A

GpioCtrlRegs.GPAMUX2.bit.GPIO21 = 1; // GPIO21 = EQEP1B

GpioCtrlRegs.GPAMUX2.bit.GPIO22 = 1; // GPIO22 = EQEP1S

GpioCtrlRegs.GPAMUX2.bit.GPIO23 = 1; // GPIO23 = EQEP1I

// Enable eCAP1 on GPIO24

GpioCtrlRegs.GPAPUD.bit.GPIO24 = 0; // Enable pullup on GPIO24 (ECAP1)

GpioCtrlRegs.GPAQSEL2.bit.GPIO24 = 0; // Synch to SYSCLKOUT

GpioCtrlRegs.GPAMUX2.bit.GPIO24 = 1; // GPIO24 = ECAP1

// Set input qualifcation period for GPIO25 & GPIO26 inputs

GpioCtrlRegs.GPACTRL.bit.QUALPRD3=1; // Qual period = SYSCLKOUT/2

GpioCtrlRegs.GPAQSEL2.bit.GPIO25=2; // 6 samples

GpioCtrlRegs.GPAQSEL2.bit.GPIO26=1; // 3 samples

// Make GPIO25 the input source for XINT1

GpioCtrlRegs.GPAMUX2.bit.GPIO25 = 0; // GPIO25 = GPIO25

GpioCtrlRegs.GPADIR.bit.GPIO25 = 0; // GPIO25 = input

GpioIntRegs.GPIOXINT1SEL.all = 25; // XINT1 connected to GPIO25

// Make GPIO26 the input source for XINT2

GpioCtrlRegs.GPAMUX2.bit.GPIO26 = 0; // GPIO26 = GPIO26

GpioCtrlRegs.GPADIR.bit.GPIO26 = 0; // GPIO26 = input

GpioIntRegs.GPIOXINT2SEL.all = 26; // XINT2 connected to GPIO26

// Make GPIO27 wakeup from HALT/STANDBY Low Power Modes

GpioCtrlRegs.GPAMUX2.bit.GPIO27 = 0; // GPIO27 = GPIO27

GpioCtrlRegs.GPADIR.bit.GPIO27 = 0; // GPIO27 = input

GpioIntRegs.GPIOLPMSEL.bit.GPIO27=1; // GPIO27 will wake the device

SysCtrlRegs.LPMCR0.bit.QUALSTDBY=2; // Qualify GPIO27 by 2 OSCCLK

// cycles before waking the device

// from STANDBY

// Enable SCI-A on GPIO28 - GPIO29

GpioCtrlRegs.GPAPUD.bit.GPIO28 = 0; // Enable pullup on GPIO28

GpioCtrlRegs.GPAQSEL2.bit.GPIO28 = 3; // asynch input

GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 1; // GPIO28 = SCIRXDA

GpioCtrlRegs.GPAPUD.bit.GPIO29 = 0; // Enable pullup on GPIO29

GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 1; // GPIO29 = SCITXDA

// Enable CAN-A on GPIO30 - GPIO31

GpioCtrlRegs.GPAPUD.bit.GPIO30 = 0; // Enable pullup on GPIO30

GpioCtrlRegs.GPAMUX2.bit.GPIO30 = 1; // GPIO30 = CANTXA

GpioCtrlRegs.GPAPUD.bit.GPIO31 = 0; // Enable pullup on GPIO31

GpioCtrlRegs.GPAQSEL2.bit.GPIO31 = 3; // asynch input

GpioCtrlRegs.GPAMUX2.bit.GPIO31 = 1; // GPIO31 = CANRXA

// Enable I2C-A on GPIO32 - GPIO33

GpioCtrlRegs.GPBPUD.bit.GPIO32 = 0; // Enable pullup on GPIO32

GpioCtrlRegs.GPBPUD.bit.GPIO33 = 0; // Enable pullup on GPIO33

GpioCtrlRegs.GPBQSEL1.bit.GPIO32 = 3; // asynch input

GpioCtrlRegs.GPBMUX1.bit.GPIO32 = 1; // GPIO32 = SDAA

GpioCtrlRegs.GPBMUX1.bit.GPIO33 = 1; // GPIO33 = SCLA

// Make GPIO34 an input

GpioCtrlRegs.GPBPUD.bit.GPIO32 = 0; // Enable pullup on GPIO34

GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 0; // GPIO34 = GPIO34

GpioCtrlRegs.GPBDIR.bit.GPIO34 = 0; // GPIO34 = input

EDIS;

}

//===========================================================================

// No more.

//===========================================================================

so when iam debugging it in ccsav3.3,i was getting the errors.

[DSP2804x_GlobalVariableDefs.c] "C:\CCStudio_v3.3\C2000\cgtools\bin\cl2000" -g -q -pdr -fr"C:/tidcs/c28/DSP2804x/v130/DSP2804x_examples/gpio_toggle/Debug" -fs"C:/tidcs/c28/DSP2804x/v130/DSP2804x_examples/gpio_toggle/Debug" -i"../../DSP2804x_headers/include" -i"../../DSP2804x_common/include" -d"_DEBUG" -d"LARGE_MODEL" -ml -mt -v28 -@"../../DSP2804x_examples/gpio_toggle/Debug.lkf" "DSP2804x_GlobalVariableDefs.c"

"DSP2804x_GlobalVariableDefs.c", line 222: error: variable "GpioCtrlRegs" was declared with a never-completed type

"DSP2804x_GlobalVariableDefs.c", line 230: error: variable "GpioDataRegs" was declared with a never-completed type

"DSP2804x_GlobalVariableDefs.c", line 238: error: variable "GpioIntRegs" was declared with a never-completed type

3 errors detected in the compilation of "DSP2804x_GlobalVariableDefs.c".

>> Compilation failure

[Example_2804xGpioToggle.c] "C:\CCStudio_v3.3\C2000\cgtools\bin\cl2000" -g -q -pdr -fr"C:/tidcs/c28/DSP2804x/v130/DSP2804x_examples/gpio_toggle/Debug" -fs"C:/tidcs/c28/DSP2804x/v130/DSP2804x_examples/gpio_toggle/Debug" -i"../../DSP2804x_headers/include" -i"../../DSP2804x_common/include" -d"_DEBUG" -d"LARGE_MODEL" -ml -mt -v28 -@"Debug.lkf" "Example_2804xGpioToggle.c"

"Example_2804xGpioToggle.c", line 153: error: identifier "GpioDataRegs" is undefined

"Example_2804xGpioToggle.c", line 172: error: identifier "GpioDataRegs" is undefined

"Example_2804xGpioToggle.c", line 198: error: identifier "GpioDataRegs" is undefined

"Example_2804xGpioToggle.c", line 224: error: identifier "GpioCtrlRegs" is undefined

4 errors detected in the compilation of "Example_2804xGpioToggle.c".

>> Compilation failure

Build Complete,

7 Errors, 0 Warnings, 0 Remarks.

Iam unable to get the clue to work this out.I even looked into the header files ,which included this gpios file.

can anyone help me out with this?

thank you.

over 15 years ago

C2000™︎ microcontrollers

C2000 microcontrollers forum

tms320f28044 query