main.c

/******************************************************************************
* File Name: main.c
*
* Description: This is the source code for the MCWDT Interrupt Application Example
*              for ModusToolbox.
*
* Related Document: See README.md
*
*******************************************************************************
* Copyright 2022-2024, Cypress Semiconductor Corporation (an Infineon company) or
* an affiliate of Cypress Semiconductor Corporation.  All rights reserved.
*
* This software, including source code, documentation and related
* materials ("Software") is owned by Cypress Semiconductor Corporation
* or one of its affiliates ("Cypress") and is protected by and subject to
* worldwide patent protection (United States and foreign),
* United States copyright laws and international treaty provisions.
* Therefore, you may use this Software only as provided in the license
* agreement accompanying the software package from which you
* obtained this Software ("EULA").
* If no EULA applies, Cypress hereby grants you a personal, non-exclusive,
* non-transferable license to copy, modify, and compile the Software
* source code solely for use in connection with Cypress's
* integrated circuit products.  Any reproduction, modification, translation,
* compilation, or representation of this Software except as specified
* above is prohibited without the express written permission of Cypress.
*
* Disclaimer: THIS SOFTWARE IS PROVIDED AS-IS, WITH NO WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, NONINFRINGEMENT, IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress
* reserves the right to make changes to the Software without notice. Cypress
* does not assume any liability arising out of the application or use of the
* Software or any product or circuit described in the Software. Cypress does
* not authorize its products for use in any products where a malfunction or
* failure of the Cypress product may reasonably be expected to result in
* significant property damage, injury or death ("High Risk Product"). By
* including Cypress's product in a High Risk Product, the manufacturer
* of such system or application assumes all risk of such use and in doing
* so agrees to indemnify Cypress against all liability.
*******************************************************************************/

#include "cy_pdl.h"
#include "cyhal.h"
#include "cybsp.h"
#include "cy_retarget_io.h"



/*******************************************************************************
* Global Variables
********************************************************************************/
/* MCWDT_0 interrupt configuration structure */
cy_stc_sysint_t mcwdt_irq_cfg =
{
    .intrSrc = ((NvicMux3_IRQn << 16) | srss_interrupt_mcwdt_0_IRQn),
    .intrPriority = 2UL
};

/*******************************************************************************
* Function Prototypes
********************************************************************************/
void handle_error(void);
void ISR_MCWDT_0(void);



/*******************************************************************************
* Function Name: main
********************************************************************************
* Summary:
* This is the main function。
*
* Parameters:
*  none
*
* Return:
*  int
*
*******************************************************************************/
int main(void)
{
    cy_rslt_t result;
    cy_en_mcwdt_status_t mcwdt_init_status = CY_MCWDT_SUCCESS;

    /* Initialize the device and board peripherals */
    result = cybsp_init() ;

    /* BSP initialization failed. Stop program execution */
    if (result != CY_RSLT_SUCCESS)
    {
        CY_ASSERT(0);
    }

    /* Enable global interrupts */
    __enable_irq();

    /* Initialize retarget-io to use the debug UART port */
    result = cy_retarget_io_init(CYBSP_DEBUG_UART_TX, CYBSP_DEBUG_UART_RX,
                                 CY_RETARGET_IO_BAUDRATE);

    /* retarget-io initialization failed. Stop program execution */
    if (result != CY_RSLT_SUCCESS)
    {
        handle_error();
    }

    /* Initialize the MCWDT_0 */
    mcwdt_init_status = Cy_MCWDT_Init(MCWDT_0_HW, &MCWDT_0_config);

    if(mcwdt_init_status!=CY_MCWDT_SUCCESS)
    {
        handle_error();
    }

    /* Sets up the interrupt handler */
    Cy_SysInt_Init(&mcwdt_irq_cfg, ISR_MCWDT_0);

    /* Enable the MCWDT interrupt in NVIC */
    NVIC_EnableIRQ((IRQn_Type) NvicMux3_IRQn);

    /* Enable the MCWDT_0 counters */
    Cy_MCWDT_Unlock(MCWDT_0_HW);
    Cy_MCWDT_SetInterruptMask(MCWDT_0_HW, CY_MCWDT_CTR_Msk);
    Cy_MCWDT_Enable(MCWDT_0_HW, CY_MCWDT_CTR_Msk,
                    0u);
    Cy_MCWDT_Lock(MCWDT_0_HW);

    /* Print a message on UART */
    /* \x1b[2J\x1b[;H - ANSI ESC sequence for clear screen */
    printf("\x1b[2J\x1b[;H");

    printf("*************** "
            "XMC7000 MCU: Multi-Counter Watchdog Timer Example "
            "*************** \r\n\n");

    printf("\r\nMCWDT initialization is complete. USER LED blinking \r\n");

    for(;;)
    {

    }
}

/*******************************************************************************
* Function Name: ISR_MCWDT_0
********************************************************************************
* Summary:
*  MCWDT interrupt handler .
*
* Parameters:
*  None
*
* Return:
*  None
*******************************************************************************/
void ISR_MCWDT_0(void)
{
    uint32_t masked;
    masked = Cy_MCWDT_GetInterruptStatusMasked(MCWDT_0_HW);

    if(MCWDT_INTR_MASKED_CTR0_INT_Msk & masked)
    {
        Cy_GPIO_Inv(CYBSP_USER_LED1_PORT, CYBSP_USER_LED1_PIN);
    }
    if(MCWDT_INTR_MASKED_CTR1_INT_Msk & masked)
    {
        Cy_GPIO_Inv(CYBSP_USER_LED2_PORT, CYBSP_USER_LED2_PIN);
    }
#ifndef KIT_XMC71
    if(MCWDT_INTR_MASKED_CTR2_INT_Msk & masked)
    {
        Cy_GPIO_Inv(CYBSP_USER_LED3_PORT, CYBSP_USER_LED3_PIN);
    }
#endif
    Cy_MCWDT_ClearInterrupt(MCWDT_0_HW, masked);

}

/*******************************************************************************
* Function Name: handle_error
********************************************************************************
* Summary:
* This function processes unrecoverable errors such as UART / MCWDT component
* initialization error. In case of such error the system will stay in
* an infinite loop of this function.
*
* Parameters:
*  None
*
* Return:
*  None
*
*******************************************************************************/
void handle_error(void)
{
     /* Disable all interrupts */
    __disable_irq();

    /* Halt the CPU */
    CY_ASSERT(0);

}

/* [] END OF FILE */