GPIO_02 NOT WORKING as GPIO output

tyntyn23

GPIO02's output is always 0.

The following code uses either GPIO_IF or gpio.h to create PWM wave, however, GPIO_02 only outputs 0. While when the same code applies GPIO_08, the PWM works perfectly.

TI technical support team: Can you verify on your side?

int main(void) {

BoardInit();

UDMAInit();

InitTerm();

MAP_PRCMPeripheralClkEnable(PRCM_GPIOA0, PRCM_RUN_MODE_CLK);

MAP_PinTypeGPIO(PIN_57, PIN_MODE_0, false); // GPIO_2 mode
MAP_GPIODirModeSet(GPIOA0_BASE, 0x04, GPIO_DIR_MODE_OUT); // GPIO_2 as output

unsigned int gpio2_port;

unsigned char gpio2_pin;

//GPIO_IF_GetPortNPin(2, &gpio2_port, &gpio2_pin);

while(1) {

// set to 0 method A:

//GPIO_IF_Set(2, gpio2_port, gpio2_pin, 0); // does not work

// set to 0 method B:

MAP_GPIOPinWrite(GPIOA0_BASE,GPIO_PIN_2,0); // does not work

MAP_UtilsDelay(8000000);

// set to 1 method A:

//GPIO_IF_Set(2, gpio2_port, gpio2_pin, 1); // does not work

// set to 1 method B:

MAP_GPIOPinWrite(GPIOA0_BASE,GPIO_PIN_2,GPIO_PIN_2); // does not work

MAP_UtilsDelay(8000000);

}

over 8 years ago

0 tyntyn23 over 8 years ago

Intellectual 430 points

New test results:

GPIO08，GPIO09，GPIO22 works well for alternating 1 and 0 outputs.

BUT,
GPIO02，GPIO07，GPIO28 don't. They all behave the same: all outputs 0 constantly.

Please advice.

0 Praneet Kumar over 8 years ago in reply to tyntyn23

TI__Genius 16230 points

I modified the 'blinky' application of the SDK to toggle GPIO-07 and GPIO-28 and see no issues whatsoever in toggling these lines. I'm attaching the modified files for your reference.

-/Praneet

1680.main.c

//*****************************************************************************
//
// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
//
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions
//  are met:
//
//    Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
//    Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the
//    distribution.
//
//    Neither the name of Texas Instruments Incorporated nor the names of
//    its contributors may be used to endorse or promote products derived
//    from this software without specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
//  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
//  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
//  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
//  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
//  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
//  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
//  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//*****************************************************************************

//*****************************************************************************
//
// Application Name     - Blinky
// Application Overview - The objective of this application is to showcase the
//                        GPIO control using Driverlib api calls. The LEDs
//                        connected to the GPIOs on the LP are used to indicate
//                        the GPIO output. The GPIOs are driven high-low
//                        periodically in order to turn on-off the LEDs.
// Application Details  -
// http://processors.wiki.ti.com/index.php/CC32xx_Blinky_Application
// or
// docs\examples\CC32xx_Blinky_Application.pdf
//
//*****************************************************************************

//****************************************************************************
//
//! \addtogroup blinky
//! @{
//
//****************************************************************************

// Standard includes
#include <stdio.h>

// Driverlib includes
#include "hw_types.h"
#include "hw_ints.h"
#include "hw_memmap.h"
#include "hw_common_reg.h"
#include "interrupt.h"
#include "hw_apps_rcm.h"
#include "prcm.h"
#include "rom.h"
#include "rom_map.h"
#include "prcm.h"
#include "gpio.h"
#include "utils.h"

// Common interface includes
#include "gpio_if.h"

#include "pinmux.h"

#define APPLICATION_VERSION     "1.1.1"

//*****************************************************************************
//                 GLOBAL VARIABLES -- Start
//*****************************************************************************
#if defined(ccs)
extern void (* const g_pfnVectors[])(void);
#endif
#if defined(ewarm)
extern uVectorEntry __vector_table;
#endif
//*****************************************************************************
//                 GLOBAL VARIABLES -- End
//*****************************************************************************


//*****************************************************************************
//                      LOCAL FUNCTION PROTOTYPES
//*****************************************************************************
void LEDBlinkyRoutine();
static void BoardInit(void);

//*****************************************************************************
//                      LOCAL FUNCTION DEFINITIONS
//*****************************************************************************

//*****************************************************************************
//
//! Configures the pins as GPIOs and peroidically toggles the lines
//!
//! \param None
//!
//! This function
//!    1. Configures 3 lines connected to LEDs as GPIO
//!    2. Sets up the GPIO pins as output
//!    3. Periodically toggles each LED one by one by toggling the GPIO line
//!
//! \return None
//
//*****************************************************************************
void LEDBlinkyRoutine()
{
    unsigned int gpio7Port, gpio28Port;
    unsigned char gpio7Pin, gpio28Pin;

    //
    // Toggle the lines initially to turn off the LEDs.
    // The values driven are as required by the LEDs on the LP.
    //
    GPIO_IF_LedOff(MCU_ALL_LED_IND);

    GPIO_IF_GetPortNPin(7, &gpio7Port, &gpio7Pin);
    GPIO_IF_GetPortNPin(28, &gpio28Port, &gpio28Pin);
    while(1)
    {
        #if 0
        //
        // Alternately toggle hi-low each of the GPIOs
        // to switch the corresponding LED on/off.
        //
        MAP_UtilsDelay(8000000);
        GPIO_IF_LedOn(MCU_RED_LED_GPIO);
        MAP_UtilsDelay(8000000);
        GPIO_IF_LedOff(MCU_RED_LED_GPIO);
        MAP_UtilsDelay(8000000);
        GPIO_IF_LedOn(MCU_ORANGE_LED_GPIO);
        MAP_UtilsDelay(8000000);
        GPIO_IF_LedOff(MCU_ORANGE_LED_GPIO);
        MAP_UtilsDelay(8000000);
        GPIO_IF_LedOn(MCU_GREEN_LED_GPIO);
        MAP_UtilsDelay(8000000);
        GPIO_IF_LedOff(MCU_GREEN_LED_GPIO);
        #endif

        MAP_UtilsDelay(8000000);
        GPIO_IF_Set(7, gpio7Port, gpio7Pin, 1);
        MAP_UtilsDelay(8000000);
        GPIO_IF_Set(7, gpio7Port, gpio7Pin, 0);
        MAP_UtilsDelay(8000000);
        GPIO_IF_Set(28, gpio28Port, gpio28Pin, 1);
        MAP_UtilsDelay(8000000);
        GPIO_IF_Set(28, gpio28Port, gpio28Pin, 0);

    }

}
//*****************************************************************************
//
//! Board Initialization & Configuration
//!
//! \param  None
//!
//! \return None
//
//*****************************************************************************
static void
BoardInit(void)
{
/* In case of TI-RTOS vector table is initialize by OS itself */
#ifndef USE_TIRTOS
    //
    // Set vector table base
    //
#if defined(ccs)
    MAP_IntVTableBaseSet((unsigned long)&g_pfnVectors[0]);
#endif
#if defined(ewarm)
    MAP_IntVTableBaseSet((unsigned long)&__vector_table);
#endif
#endif

    //
    // Enable Processor
    //
    MAP_IntMasterEnable();
    MAP_IntEnable(FAULT_SYSTICK);

    PRCMCC3200MCUInit();
}
//****************************************************************************
//
//! Main function
//!
//! \param none
//!
//! This function
//!    1. Invokes the LEDBlinkyTask
//!
//! \return None.
//
//****************************************************************************
int
main()
{
    //
    // Initialize Board configurations
    //
    BoardInit();

    //
    // Power on the corresponding GPIO port B for 9,10,11.
    // Set up the GPIO lines to mode 0 (GPIO)
    //
    PinMuxConfig();
    GPIO_IF_LedConfigure(LED1|LED2|LED3);

    GPIO_IF_LedOff(MCU_ALL_LED_IND);

    //
    // Start the LEDBlinkyRoutine
    //
    LEDBlinkyRoutine();
    return 0;
}

//*****************************************************************************
//
// Close the Doxygen group.
//! @}
//
//*****************************************************************************

3580.pinmux.c

//*****************************************************************************
// pinmux.c
//
// configure the device pins for different peripheral signals
//
// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
//
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions
//  are met:
//
//    Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
//    Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the
//    distribution.
//
//    Neither the name of Texas Instruments Incorporated nor the names of
//    its contributors may be used to endorse or promote products derived
//    from this software without specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
//  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
//  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
//  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
//  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
//  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
//  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
//  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//*****************************************************************************

// This file was automatically generated on 7/21/2014 at 3:06:20 PM
// by TI PinMux version 3.0.334
//
//*****************************************************************************

#include "pinmux.h"
#include "hw_types.h"
#include "hw_memmap.h"
#include "hw_gpio.h"
#include "pin.h"
#include "rom.h"
#include "rom_map.h"
#include "gpio.h"
#include "prcm.h"

//*****************************************************************************
void
PinMuxConfig(void)
{
    //
    // Enable Peripheral Clocks
    //
    MAP_PRCMPeripheralClkEnable(PRCM_GPIOA1, PRCM_RUN_MODE_CLK);
    MAP_PRCMPeripheralClkEnable(PRCM_GPIOA0, PRCM_RUN_MODE_CLK);
    MAP_PRCMPeripheralClkEnable(PRCM_GPIOA3, PRCM_RUN_MODE_CLK);

    //
    // Configure PIN_64 for GPIOOutput
    //
    MAP_PinTypeGPIO(PIN_64, PIN_MODE_0, false);
    MAP_GPIODirModeSet(GPIOA1_BASE, 0x2, GPIO_DIR_MODE_OUT);

    //GPIO-07
    MAP_PinTypeGPIO(PIN_62, PIN_MODE_0, false);
    MAP_GPIODirModeSet(GPIOA0_BASE, 0x80, GPIO_DIR_MODE_OUT);

    //GPIO-28
    MAP_PinTypeGPIO(PIN_18, PIN_MODE_0, false);
    MAP_GPIODirModeSet(GPIOA3_BASE, 0x10, GPIO_DIR_MODE_OUT);

    //
    // Configure PIN_01 for GPIOOutput
    //
    MAP_PinTypeGPIO(PIN_01, PIN_MODE_0, false);
    MAP_GPIODirModeSet(GPIOA1_BASE, 0x4, GPIO_DIR_MODE_OUT);

    //
    // Configure PIN_02 for GPIOOutput
    //
    MAP_PinTypeGPIO(PIN_02, PIN_MODE_0, false);
    MAP_GPIODirModeSet(GPIOA1_BASE, 0x8, GPIO_DIR_MODE_OUT);
}

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GPIO_02 NOT WORKING as GPIO output