main.c

/******************************************************************************
* File Name:   main.c
*
* Description: This is the source code for the DPS310 pressure sensor Application
*
* Related Document: See Readme.md
*
*******************************************************************************
* Copyright 2022, 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 header files
 ******************************************************************************/
#include "cy_pdl.h"
#include "cyhal.h"
#include "cybsp.h"
#include "cy_retarget_io.h"
#include "xensiv_dps3xx_mtb.h"
#include "xensiv_dps3xx.h"

/*******************************************************************************
* Macros
*******************************************************************************/
#define OVERSAMPLING            7
#define I2C_MASTER_FREQUENCY    400000

/*******************************************************************************
* Global Variables
********************************************************************************/
/* Context for dps310 */
xensiv_dps3xx_t dps310_sensor;

/* Declaration for i2c handler */
cyhal_i2c_t I2Cm_HW;

/* Define the I2C master configuration structure */
cyhal_i2c_cfg_t i2c_cfg_master = {
        CYHAL_I2C_MODE_MASTER,
        0,                          /* address is not used for master mode */
        I2C_MASTER_FREQUENCY
};

/*******************************************************************************
 * Function Name: main
 ********************************************************************************
 * Summary:
 * This is the main function for CM4 CPU. It perfroms the following opeartions:
 *    1. Initializes the BSP
 *    2. Initializes retarget IO for UART debug printing
 *    3. Initializes I2C using HAL driver
 *    4. Initializes the DPS310 pressure sensor
 *    5. Measures the temperature and the pressure values and prints it on the
*        serial terminal every 1 second.
 *
 * Return:
 *  int
 *
 *******************************************************************************/
int main(void)
{
    cy_rslt_t result;
    uint32_t revisionID = 0;
    float pressure, temperature;

    /* Initialize the device and board peripherals */
    result = cybsp_init();
    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 to clear screen. */
    printf("\x1b[2J\x1b[;H \r");
    printf("=========================================================\n\r");
    printf("  PSoC 6 MCU:  Interfacing DPS310 Pressure Sensor \r\n");
    printf("=========================================================\n\n\r");

    /* Initialize i2c for pressure sensor */
    result = cyhal_i2c_init(&I2Cm_HW, CYBSP_I2C_SDA, CYBSP_I2C_SCL, NULL);
    if (result != CY_RSLT_SUCCESS)
    {
        printf("\r\nI2C initialization failed\r\n");
        CY_ASSERT(0);
    }

    /* Configure i2c with master configurations */
    result = cyhal_i2c_configure(&I2Cm_HW, &i2c_cfg_master);
    if (result != CY_RSLT_SUCCESS)
    {
        printf("\r\nFailed to configure I2C\r\n");
        CY_ASSERT(0);
    }

    /* Initialize pressure sensor */
    result = xensiv_dps3xx_mtb_init_i2c(&dps310_sensor, &I2Cm_HW,
                                        XENSIV_DPS3XX_I2C_ADDR_DEFAULT);
    if (result != CY_RSLT_SUCCESS)
    {
        printf("\r\nFailed to initialize DPS310 I2C\r\n");
        CY_ASSERT(0);
    }

    /* Retrieve the DPS310 Revision ID and display the same */
    if (xensiv_dps3xx_get_revision_id(&dps310_sensor,(uint8_t*)&revisionID) == CY_RSLT_SUCCESS)
    {
        printf("DPS310 Revision ID = %d\r\n\n",(uint8_t)revisionID);
    }
    else
    {
        printf("Failed to get Revision ID\r\n");
        CY_ASSERT(0);
    }

    for (;;)
    {
        /* Read the pressure and temperature data */
        if (xensiv_dps3xx_read(&dps310_sensor, &pressure, &temperature) == CY_RSLT_SUCCESS)
        {
            /* Display the pressure and temperature data in console*/
            printf("Pressure : %0.2f mBar", pressure);
            /* 0xF8 - ASCII Degree Symbol */
            printf("\t Temperature: %0.2f %cC \r\n", temperature, 0xF8);
        }
        else
        {
            printf("\n Failed to read temperature and pressure data.\r\n");
            CY_ASSERT(0);
        }
        
        /* Generate a delay of 1 second before next read */
        cyhal_system_delay_ms(1000);
    }
}

/* [] END OF FILE */