main.c

/******************************************************************************
* File Name:   main.c
*
* Description: This is the source code for the Class-B Safety I2C test for SCB
*              Block code example for ModusToolbox.
*
* Related Document: See README.md
*
*
*******************************************************************************
* Copyright 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.
*******************************************************************************/

/*******************************************************************************
* Includes
********************************************************************************/

#include "cy_pdl.h"
#include "cybsp.h"
#include "cy_retarget_io.h"
#include "SelfTest_I2C_SCB.h"

/*******************************************************************************
* Macros
********************************************************************************/
#define MAX_INDEX_VAL (0xFFF0u)

#if COMPONENT_CAT1A
    #define INTR_SRC_MASTER CYBSP_DUT_I2C_MASTER_IRQ
    #define INTR_SRC_SLAVE  CYBSP_DUT_I2C_SLAVE_IRQ
#elif COMPONENT_CAT1C
    #define INTR_SRC_MASTER ((NvicMux3_IRQn << 16) | CYBSP_DUT_I2C_MASTER_IRQ)
    #define INTR_SRC_SLAVE  ((NvicMux2_IRQn << 16) | CYBSP_DUT_I2C_SLAVE_IRQ)
#endif

/*******************************************************************************
* Global Variables
********************************************************************************/
static cy_stc_scb_i2c_context_t CYBSP_DUT_I2C_MASTER_context;
static cy_stc_scb_i2c_context_t CYBSP_DUT_I2C_SLAVE_context;
static uint8_t i2c_slave_read_buf[PACKET_SIZE];
static uint8_t i2c_slave_write_buf[PACKET_SIZE];

/*******************************************************************************
* Function Prototypes
********************************************************************************/
static void CYBSP_DUT_I2C_MASTER_Interrupt(void);
static void CYBSP_DUT_I2C_SLAVE_Interrupt(void);
static void SelfTest_I2C_SCB_Init(void);

/*******************************************************************************
* Function Name: main
********************************************************************************
* Summary:
* The main function performs the following tasks:
*    1. Initializes the device, board peripherals, and retarget-io for prints.
*    2. Calls the SelfTest_I2C_SCB_Init function to initialize the UART component.
*    3. Calls the SelfTest_I2C_SCB API to test the I2C SCB IP.
*
* Parameters:
*  void
*
* Return:
*  int
*
*******************************************************************************/

int main(void)
{
    cy_rslt_t result;

    uint8_t ret;

    uint16_t count = 0u;

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

    /* Board init 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);
    if (result != CY_RSLT_SUCCESS)
    {
        CY_ASSERT(0);
    }

    /* \x1b[2J\x1b[;H - ANSI ESC sequence for clear screen */
    printf("\x1b[2J\x1b[;H");
    printf("\r\nClass-B Safety Test: I2C\r\n");

    /* Init I2C SelfTest*/
    SelfTest_I2C_SCB_Init();

    for (;;)
    {

        /*******************************/
        /* Run I2C Self Test...       */
        /*******************************/

        ret = SelfTest_I2C_SCB(CYBSP_DUT_I2C_MASTER_HW, &CYBSP_DUT_I2C_MASTER_context,
                CYBSP_DUT_I2C_SLAVE_HW, &CYBSP_DUT_I2C_SLAVE_context,
                i2c_slave_read_buf, i2c_slave_write_buf);

        if ((PASS_COMPLETE_STATUS != ret) && (PASS_STILL_TESTING_STATUS != ret))
        {

            /* Process error */
            printf("\r\nI2C Protocol test: error \r\n");
            /* For demo purposes in case of error detection
             * message is printed to DEBUG Output and code execution
             *             * is stopped here in a while loop */
            while (1)
            {
            }
        }

        /* Print test counter */
        printf("\rI2C Protocol communication testing at run-time... count=%d", count);

        count++;
        if (count > MAX_INDEX_VAL)
        {
            count = 0u;
        }
    }
}




/*****************************************************************************
* Function Name: SelfTest_I2C_SCB_Init
******************************************************************************
*
* Summary:
*  Init I2C components and create I2C slave buffers
*
* Parameters:
*  NONE
*
* Return:
*  NONE
*
* Note:
*
*****************************************************************************/
static void SelfTest_I2C_SCB_Init(void)
{
    cy_en_scb_i2c_status_t i2c_res;
    cy_en_sysint_status_t int_res;

    const cy_stc_sysint_t CYBSP_DUT_I2C_MASTER_IRQ_config =
    {
            .intrSrc = INTR_SRC_MASTER,
            .intrPriority = 3u
    };

    /*Initialize and enable the I2C in master mode*/
   i2c_res = Cy_SCB_I2C_Init(CYBSP_DUT_I2C_MASTER_HW, &CYBSP_DUT_I2C_MASTER_config, &CYBSP_DUT_I2C_MASTER_context);
   if(i2c_res != CY_SCB_I2C_SUCCESS)
   {
       CY_ASSERT(0);
   }

   /* Hook interrupt service routine */
   int_res = Cy_SysInt_Init(&CYBSP_DUT_I2C_MASTER_IRQ_config, &CYBSP_DUT_I2C_MASTER_Interrupt);
   if(int_res != CY_SYSINT_SUCCESS)
   {
       CY_ASSERT(0);
   }

   /* Enable Interrupt */
    #if COMPONENT_CAT1A
       NVIC_EnableIRQ(CYBSP_DUT_I2C_MASTER_IRQ_config.intrSrc);
    #elif COMPONENT_CAT1C
       NVIC_EnableIRQ((IRQn_Type) NvicMux3_IRQn);
    #endif

   Cy_SCB_I2C_Enable(CYBSP_DUT_I2C_MASTER_HW);


   const cy_stc_sysint_t CYBSP_DUT_I2C_SLAVE_IRQ_config = {
            .intrSrc = INTR_SRC_SLAVE,
            .intrPriority = 3u,
    };

    /* Initialize and enable I2C Component in slave mode. */
    i2c_res = Cy_SCB_I2C_Init(CYBSP_DUT_I2C_SLAVE_HW, &CYBSP_DUT_I2C_SLAVE_config, &CYBSP_DUT_I2C_SLAVE_context);
    if(i2c_res != CY_SCB_I2C_SUCCESS)
    {
        CY_ASSERT(0);
    }

    /* Configure read buffer */
    Cy_SCB_I2C_SlaveConfigReadBuf(CYBSP_DUT_I2C_SLAVE_HW, i2c_slave_read_buf,PACKET_SIZE, &CYBSP_DUT_I2C_SLAVE_context);
    /* Configure write buffer */
    Cy_SCB_I2C_SlaveConfigWriteBuf(CYBSP_DUT_I2C_SLAVE_HW, i2c_slave_write_buf,PACKET_SIZE, &CYBSP_DUT_I2C_SLAVE_context);

    int_res = Cy_SysInt_Init(&CYBSP_DUT_I2C_SLAVE_IRQ_config, &CYBSP_DUT_I2C_SLAVE_Interrupt);
    if(int_res != CY_SYSINT_SUCCESS)
    {
        CY_ASSERT(0);
    }

   /* Enable Interrupt */
    #if COMPONENT_CAT1A
       NVIC_EnableIRQ(CYBSP_DUT_I2C_SLAVE_IRQ_config.intrSrc);
    #elif COMPONENT_CAT1C
       NVIC_EnableIRQ((IRQn_Type)NvicMux2_IRQn);
    #endif

    Cy_SCB_I2C_Enable(CYBSP_DUT_I2C_SLAVE_HW);

}


/*******************************************************************************
* Function Name: CYBSP_DUT_I2C_MASTER_Interrupt
****************************************************************************//**
*
* Summary:
*   Invokes the Cy_SCB_I2C_Interrupt() PDL driver function.
*
*******************************************************************************/
static void CYBSP_DUT_I2C_MASTER_Interrupt(void)
{
    Cy_SCB_I2C_MasterInterrupt(CYBSP_DUT_I2C_MASTER_HW, &CYBSP_DUT_I2C_MASTER_context);
}


/*******************************************************************************
* Function Name: CYBSP_DUT_I2C_SLAVE_Interrupt
****************************************************************************//**
*
* Summary:
*   Invokes the Cy_SCB_I2C_Interrupt() PDL driver function.
*
*******************************************************************************/
static void CYBSP_DUT_I2C_SLAVE_Interrupt(void)
{
    Cy_SCB_I2C_SlaveInterrupt(CYBSP_DUT_I2C_SLAVE_HW, &CYBSP_DUT_I2C_SLAVE_context);
}
/* [] END OF FILE */