How can I configure to activate GPIO pin?

[chwa_1570756]

Hello,

I use WICED6.2 with the platform of CYW94343WWCD1_EVB, when I make the  "snip.gpio-CYW94343WWCD1_EVB download run", everything is ok and LED1&2 on borad can blink properly. Anyway I want to operate another gpio pin of WICED_GPIO_20(MICRO_GPIO_2),

so I just simply modified the definition  of #define WICED_LED1  ( WICED_GPIO_11 ) to  #define WICED_LED1  ( WICED_GPIO_20 ) in platform.h and dowload run, but I can not get voltage level changes from WICED_GPIO_20 pin measuring by a multi-meter.

anybody know if there is some else gpio configure I missed?

Chris

[Zhengbao_Zhang]

Hi:

   do you have a change on this define position?

/* PWM peripherals. Used by WICED/platform/MCU/wiced_platform_common.c */

const platform_pwm_t platform_pwm_peripherals[] =

{

  [WICED_PWM_1] = {TIM3, 3, RCC_APB1Periph_TIM3, GPIO_AF_TIM3, &platform_gpio_pins[WICED_GPIO_11]},

  [WICED_PWM_2] = {TIM10, 1, RCC_APB2Periph_TIM10, GPIO_AF_TIM10, &platform_gpio_pins[WICED_GPIO_26]},

[chwa_1570756]

Hi zhez​

Thanks for your reply.

I try to change the WICED_GPIO_11 to WICED_GPIO_20 in all related code including your advice above, but I still can not observe voltage change on the pin of PC0.0 (WICED_GPIO_20)  controlled by snip.gpio.c

any other issue I did not consider?

[AxLi_1746341]

zhez wrote:

Hi:

   do you have a change on this define position?

/* PWM peripherals. Used by WICED/platform/MCU/wiced_platform_common.c */

const platform_pwm_t platform_pwm_peripherals[] =

{

  [WICED_PWM_1] = {TIM3, 3, RCC_APB1Periph_TIM3, GPIO_AF_TIM3, &platform_gpio_pins[WICED_GPIO_11]},

  [WICED_PWM_2] = {TIM10, 1, RCC_APB2Periph_TIM10, GPIO_AF_TIM10, &platform_gpio_pins[WICED_GPIO_26]},

Why checking PWM peripherals?

wiced_pwm_init() is never called by snip.gpio.

[chwa_1570756]

Hi axel,

Thanks for your reply.

What do you think of the original question about GPIO pin?

[AxLi_1746341]

Make sure WICED_GPIO_20 is properly initialized by platform_gpio_init().

[Zhengbao_Zhang]

Hi Chris:

     Not to set WICED_GPIO_20,  it is config to  WICED_BUTTON1 , and set to input_pull_up .  and it is initialized after led GPIO, so your modification will not work.  Thanks Axel, forget the PWM setting.

   or you need to change the WCIED_BUTTON1 to another pin define.

[chwa_1570756]

Hi,

As following the advice I added the initialized program in platform.c like this:

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void platform_led_init( void )

{

    /* Initialise LEDs and turn off by default */

    platform_gpio_init( &platform_gpio_pins[WICED_GPIO_21], OUTPUT_PUSH_PULL ); // the added line for initialize pin

    platform_gpio_init( &platform_gpio_pins[WICED_LED1], OUTPUT_PUSH_PULL );

    platform_gpio_init( &platform_gpio_pins[WICED_LED2], OUTPUT_PUSH_PULL );

    platform_led_set_state(WICED_LED_INDEX_1, WICED_LED_ON);

    platform_led_set_state(WICED_LED_INDEX_2, WICED_LED_OFF);

}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

And change the pin state in gpio.c like this:

void application_start( )

{

    wiced_bool_t led1 = WICED_FALSE;

    wiced_bool_t led2 = WICED_FALSE;

    wiced_bool_t button1_pressed;

    wiced_bool_t button2_pressed;

    /* Initialise the WICED device */

    wiced_init();

    WPRINT_APP_INFO( ( "The LEDs are flashing. Holding a button will force the corresponding LED on\n" ) );

    while ( 1 )

    {

        /* Read the state of Button 1 */

        button1_pressed = wiced_gpio_input_get( WICED_BUTTON1 ) ? WICED_FALSE : WICED_TRUE;  /* The button has inverse logic */

        if ( button1_pressed == WICED_TRUE )

        {   /* Turn LED1 on */

            wiced_gpio_output_high( WICED_LED1 );

        }

        else

        {   /* Toggle LED1 */

            if ( led1 == WICED_TRUE )

            {

                wiced_gpio_output_low( WICED_LED1 );

                led1 = WICED_FALSE;

                wiced_gpio_output_high( WICED_GPIO_21); // the added line for testing pin state

            }

            else

            {

                wiced_gpio_output_high( WICED_LED1 );

                led1 = WICED_TRUE;

                wiced_gpio_output_low( WICED_GPIO_21); // the added line for testing pin state

            }

        }

        wiced_rtos_delay_milliseconds( 250 );

    }

}

Normally  WICED_GPIO_21(GPIOC.1) active state should be observed by multi meter, but it always keep low.

[chwa_1570756]

Hi,

I try to test those pins of PORTA  or PORTB using the same procedure, they can work normally, so I guess the PORTC pins are not correctly initialized by platform_gpio_init( ) API command.