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Thread: ECAT_SSC: Uninitialized gpio_config stack variables in HW_Init()

  1. #1
    Beginner Beginner aikihana is on a distinguished road
    Join Date
    May 2018

    ECAT_SSC: Uninitialized gpio_config stack variables in HW_Init()

    It looks like there is a bug in the HW_Init code in "Dave/Generated/ECAT_SSC/xmc_eschw.c"

    The gpio_config and port_control structures are not being fully initialized. This results in the gpio_config.output_level variable being assigned a random stack value.
    When gpio_config.output_level is used to initialize the ECAT gpios in XMC_GPIO_Init() it assigns garbage stack values into the OMR register.

    port->OMR = (uint32_t)config->output_level << pin;

    UINT16 HW_Init(void)
    uint8_t i;
    XMC_ECAT_PORT_CTRL_t port_control;
    XMC_GPIO_CONFIG_t gpio_config;

    memset(&port_control, 0, sizeof(port_control)); // <-- add this line
    memset(&gpio_config, 0, sizeof(gpio_config)); // <-- add this line

    DAVE Version: 4.4.2
    ECAT_SSC APP Version: 4.0.22

  2. #2

    Infineon Employee
    Infineon Employee
    jferreira will become famous soon enough
    Join Date
    Oct 2012

    Thanks for the feedback we will correct it in the next release.

    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

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