main.c

/******************************************************************************
* File Name:   main.c
*
* Description: This is the source code for the USBPD Sink PPS demo Example
*              for ModusToolbox.
*
* Related Document: See README.md
*
*
*******************************************************************************
* Copyright 2021-2023, 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 "cybsp.h"
#include "config.h"

#include "cy_pdutils_sw_timer.h"
#include "cy_usbpd_common.h"
#include "cy_pdstack_common.h"
#include "cy_usbpd_typec.h"
#include "cy_pdstack_dpm.h"
#include "cy_usbpd_vbus_ctrl.h"
#include "cy_usbpd_phy.h"
#include "instrumentation.h"
#include "app.h"
#include "pdo.h"
#include "psink.h"
#include "swap.h"
#include "vdm.h"
#include "charger_detect.h"
#include "mtbcfg_ezpd.h"

#if CY_PD_PPS_SNK_ENABLE
#include "pps.h"

/*******************************************************************************
* Global Variables
********************************************************************************/
/* User Switch Interrupt Configuration */
const cy_stc_sysint_t User_Switch_intr_config =
{
    .intrSrc = CYBSP_USER_SW_IRQ,   /* Source of interrupt signal */
    .intrPriority = 3u,             /* Interrupt priority */
};

/* Flag to detect switch press event */
volatile uint8_t SwitchPressFlag = 0;

/* Flag to indicate PPS mode (true - PPS mode, false - Non PPS mode) */
bool ppsSetFlag = false;

/* Flag to start PPS timer for first time */
bool ppsInitTimerFlag = true;

void User_Switch_Interrupt_Handler(void);
#else
bool ppsSetFlag = false;
#endif /* CY_PD_PPS_SNK_ENABLE */

cy_stc_pdutils_sw_timer_t        gl_TimerCtx;
cy_stc_usbpd_context_t   gl_UsbPdPort0Ctx;

cy_stc_pdstack_context_t gl_PdStackPort0Ctx;
#if PMG1_PD_DUALPORT_ENABLE
cy_stc_usbpd_context_t gl_UsbPdPort1Ctx;
cy_stc_pdstack_context_t gl_PdStackPort1Ctx;
#endif /* PMG1_PD_DUALPORT_ENABLE */

const cy_stc_pdstack_dpm_params_t pdstack_port0_dpm_params =
{
        .dpmSnkWaitCapPeriod = 400,
        .dpmRpAudioAcc = CY_PD_RP_TERM_RP_CUR_DEF,
        .dpmDefCableCap = 300,
        .muxEnableDelayPeriod = 0,
        .typeCSnkWaitCapPeriod = 0,
        .defCur = 90
};

#if PMG1_PD_DUALPORT_ENABLE
const cy_stc_pdstack_dpm_params_t pdstack_port1_dpm_params =
{
        .dpmSnkWaitCapPeriod = 400,
        .dpmRpAudioAcc = CY_PD_RP_TERM_RP_CUR_DEF,
        .dpmDefCableCap = 300,
        .muxEnableDelayPeriod = 0,
        .typeCSnkWaitCapPeriod = 0,
        .defCur = 90
};
#endif /* PMG1_PD_DUALPORT_ENABLE */
cy_stc_pdstack_context_t * gl_PdStackContexts[NO_OF_TYPEC_PORTS] =
{
        &gl_PdStackPort0Ctx,
#if PMG1_PD_DUALPORT_ENABLE
        &gl_PdStackPort1Ctx
#endif /* PMG1_PD_DUALPORT_ENABLE */
};

/*******************************************************************************
 * Macro declarations
 ******************************************************************************/
#define CY_ASSERT_FAILED    (0u)

/*******************************************************************************
* Function Prototypes
********************************************************************************/
bool mux_ctrl_init(uint8_t port)
{
    /* No MUXes to be controlled on the PMG1 proto kits. */
    CY_UNUSED_PARAMETER(port);
    return true;
}

const cy_stc_sysint_t wdt_interrupt_config =
{
    .intrSrc = (IRQn_Type)srss_interrupt_wdt_IRQn,
    .intrPriority = 0U,
};

const cy_stc_sysint_t usbpd_port0_intr0_config =
{
    .intrSrc = (IRQn_Type)mtb_usbpd_port0_IRQ,
    .intrPriority = 0U,
};

const cy_stc_sysint_t usbpd_port0_intr1_config =
{
    .intrSrc = (IRQn_Type)mtb_usbpd_port0_DS_IRQ,
    .intrPriority = 0U,
};

#if PMG1_PD_DUALPORT_ENABLE
const cy_stc_sysint_t usbpd_port1_intr0_config =
{
    .intrSrc = (IRQn_Type)mtb_usbpd_port1_IRQ,
    .intrPriority = 0U,
};

const cy_stc_sysint_t usbpd_port1_intr1_config =
{
    .intrSrc = (IRQn_Type)mtb_usbpd_port1_DS_IRQ,
    .intrPriority = 0U,
};
#endif /* PMG1_PD_DUALPORT_ENABLE */

cy_stc_pdstack_context_t *get_pdstack_context(uint8_t portIdx)
{
    return (gl_PdStackContexts[portIdx]);
}

/* Solution PD event handler */
void sln_pd_event_handler(cy_stc_pdstack_context_t* ctx, cy_en_pdstack_app_evt_t evt, const void *data)
{
    (void)ctx;

    if(evt == APP_EVT_HANDLE_EXTENDED_MSG)
    {
        cy_stc_pd_packet_extd_t * ext_mes = (cy_stc_pd_packet_extd_t * )data;
        if ((ext_mes->msg != CY_PDSTACK_EXTD_MSG_SECURITY_RESP) && (ext_mes->msg != CY_PDSTACK_EXTD_MSG_FW_UPDATE_RESP))
        {
            /* Send Not supported message */
            Cy_PdStack_Dpm_SendPdCommand(ctx, CY_PDSTACK_DPM_CMD_SEND_NOT_SUPPORTED, NULL, true, NULL);
        }
    }
}

void instrumentation_cb(uint8_t port, inst_evt_t evt)
{
    uint8_t evt_offset = APP_TOTAL_EVENTS;
    evt += evt_offset;
    sln_pd_event_handler(&gl_PdStackPort0Ctx, (cy_en_pdstack_app_evt_t)evt, NULL);
}

static void wdt_interrupt_handler(void)
{
    /* Clear WDT pending interrupt */
    Cy_WDT_ClearInterrupt();

#if (CY_PDUTILS_TIMER_TICKLESS_ENABLE == 0)
    /* Load the timer match register. */
    Cy_WDT_SetMatch((Cy_WDT_GetCount() + gl_TimerCtx.multiplier));
#endif /* (TIMER_TICKLESS_ENABLE == 0) */

    /* Invoke the timer handler. */
    Cy_PdUtils_SwTimer_InterruptHandler (&(gl_TimerCtx));
}

static void cy_usbpd0_intr0_handler(void)
{
    Cy_USBPD_Intr0Handler(&gl_UsbPdPort0Ctx);
}

static void cy_usbpd0_intr1_handler(void)
{
    Cy_USBPD_Intr1Handler(&gl_UsbPdPort0Ctx);
}

#if PMG1_PD_DUALPORT_ENABLE
static void cy_usbpd1_intr0_handler(void)
{
    Cy_USBPD_Intr0Handler(&gl_UsbPdPort1Ctx);
}

static void cy_usbpd1_intr1_handler(void)
{
    Cy_USBPD_Intr1Handler(&gl_UsbPdPort1Ctx);
}
#endif /* PMG1_PD_DUALPORT_ENABLE */

cy_stc_pd_dpm_config_t* get_dpm_connect_stat(void)
{
    return &(gl_PdStackPort0Ctx.dpmConfig);
}

#if PMG1_PD_DUALPORT_ENABLE
cy_stc_pd_dpm_config_t* get_dpm_port1_connect_stat()
{
    return &(gl_PdStackPort1Ctx.dpmConfig);
}
#endif /* PMG1_PD_DUALPORT_ENABLE */

/*
 * Application callback functions for the DPM. Since this application
 * uses the functions provided by the stack, loading the stack defaults.
 */
const cy_stc_pdstack_app_cbk_t app_callback =
{
    app_event_handler,
    vconn_enable,
    vconn_disable,
    vconn_is_present,
    vbus_is_present,
    vbus_discharge_on,
    vbus_discharge_off,
    psnk_set_voltage,
    psnk_set_current,
    psnk_enable,
    psnk_disable,
    eval_src_cap,
    eval_dr_swap,
    eval_pr_swap,
    eval_vconn_swap,
    eval_vdm,
    vbus_get_value,
};

cy_stc_pdstack_app_cbk_t* app_get_callback_ptr(cy_stc_pdstack_context_t * context)
{
    (void)context;
    /* Solution callback pointer is same for all ports */
    return ((cy_stc_pdstack_app_cbk_t *)(&app_callback));
}

#if CY_PD_PPS_SNK_ENABLE
/*******************************************************************************
* Function Name: User_Switch_Interrupt_Handler
********************************************************************************
*
* Summary:
*  This function is executed when interrupt is triggered through the user switch press.
*
*******************************************************************************/
void User_Switch_Interrupt_Handler(void)
{
    /* Set Switch press flag to 1 */
    SwitchPressFlag = 1;

    /* Clear the Interrupt */
    Cy_GPIO_ClearInterrupt(CYBSP_USER_SW_PORT, CYBSP_USER_SW_NUM);
}
#endif /* CY_PD_PPS_SNK_ENABLE */

int main(void)
{
    cy_rslt_t result;
    cy_stc_pdutils_timer_config_t timerConfig;

    /* Initialize the device and board peripherals */
    result = cybsp_init() ;
    if (result != CY_RSLT_SUCCESS)
    {
        CY_ASSERT(0);
    }

#if CY_PD_PPS_SNK_ENABLE
    cy_en_sysint_status_t intr_result;

    /* Initialize Switch GPIO interrupt */
    intr_result = Cy_SysInt_Init(&User_Switch_intr_config, &User_Switch_Interrupt_Handler);
    if (intr_result != CY_SYSINT_SUCCESS)
    {
        CY_ASSERT(CY_ASSERT_FAILED);
    }

    /* Clear any pending interrupt and enable the User Switch Interrupt */
    NVIC_ClearPendingIRQ(User_Switch_intr_config.intrSrc);
    NVIC_EnableIRQ(User_Switch_intr_config.intrSrc);
#endif /* CY_PD_PPS_SNK_ENABLE */

    /*
     * Register the interrupt handler for the watchdog timer. This timer is used to
     * implement the soft timers required by the USB-PD Stack.
     */
    Cy_SysInt_Init(&wdt_interrupt_config, &wdt_interrupt_handler);
    NVIC_EnableIRQ(wdt_interrupt_config.intrSrc);

    timerConfig.sys_clk_freq = Cy_SysClk_ClkSysGetFrequency();
    timerConfig.hw_timer_ctx = NULL;

    /* Initialize the soft timer module. */
    Cy_PdUtils_SwTimer_Init(&gl_TimerCtx, &timerConfig);

    /* Enable global interrupts */
    __enable_irq();

    /* Initialize the instrumentation related data structures. */
    instrumentation_init();

    /* Register callback function to be executed when instrumentation fault occurs. */
    instrumentation_register_cb((instrumentation_cb_t)instrumentation_cb);

    /* Configure and enable the USBPD interrupts */
    Cy_SysInt_Init(&usbpd_port0_intr0_config, &cy_usbpd0_intr0_handler);
    NVIC_EnableIRQ(usbpd_port0_intr0_config.intrSrc);

    Cy_SysInt_Init(&usbpd_port0_intr1_config, &cy_usbpd0_intr1_handler);
    NVIC_EnableIRQ(usbpd_port0_intr1_config.intrSrc);

#if PMG1_PD_DUALPORT_ENABLE
    /* Configure and enable the USBPD interrupts for Port #1. */
    Cy_SysInt_Init(&usbpd_port1_intr0_config, &cy_usbpd1_intr0_handler);
    NVIC_EnableIRQ(usbpd_port1_intr0_config.intrSrc);

    Cy_SysInt_Init(&usbpd_port1_intr1_config, &cy_usbpd1_intr1_handler);
    NVIC_EnableIRQ(usbpd_port1_intr1_config.intrSrc);
#endif /* PMG1_PD_DUALPORT_ENABLE */

    /* Initialize the USBPD driver */
#if defined(CY_DEVICE_CCG3)
    Cy_USBPD_Init(&gl_UsbPdPort0Ctx, 0, mtb_usbpd_port0_HW, NULL,
            (cy_stc_usbpd_config_t *)&mtb_usbpd_port0_config, get_dpm_connect_stat);
#else
    Cy_USBPD_Init(&gl_UsbPdPort0Ctx, 0, mtb_usbpd_port0_HW, mtb_usbpd_port0_HW_TRIM,
            (cy_stc_usbpd_config_t *)&mtb_usbpd_port0_config, get_dpm_connect_stat);
#if PMG1_PD_DUALPORT_ENABLE
    Cy_USBPD_Init(&gl_UsbPdPort1Ctx, 1, mtb_usbpd_port1_HW, mtb_usbpd_port1_HW_TRIM,
            (cy_stc_usbpd_config_t *)&mtb_usbpd_port1_config, get_dpm_port1_connect_stat);
#endif /* PMG1_PD_DUALPORT_ENABLE */
#endif

    /* Initialize the Device Policy Manager. */
    Cy_PdStack_Dpm_Init(&gl_PdStackPort0Ctx,
                       &gl_UsbPdPort0Ctx,
                       &mtb_usbpd_port0_pdstack_config,
                       app_get_callback_ptr(&gl_PdStackPort0Ctx),
                       &pdstack_port0_dpm_params,
                       &gl_TimerCtx);

#if PMG1_PD_DUALPORT_ENABLE
    Cy_PdStack_Dpm_Init(&gl_PdStackPort1Ctx,
                       &gl_UsbPdPort1Ctx,
                       &mtb_usbpd_port1_pdstack_config,
                       app_get_callback_ptr(&gl_PdStackPort1Ctx),
                       &pdstack_port1_dpm_params,
                       &gl_TimerCtx);
#endif /* PMG1_PD_DUALPORT_ENABLE */

    /* Perform application level initialization. */
    app_init(&gl_PdStackPort0Ctx);
#if PMG1_PD_DUALPORT_ENABLE
    app_init(&gl_PdStackPort1Ctx);
#endif /* PMG1_PD_DUALPORT_ENABLE */

    /* Initialize the fault configuration values */
    fault_handler_init_vars(&gl_PdStackPort0Ctx);
#if PMG1_PD_DUALPORT_ENABLE
    fault_handler_init_vars(&gl_PdStackPort1Ctx);
#endif /* PMG1_PD_DUALPORT_ENABLE */

    /* Start any timers or tasks associated with application instrumentation. */
    instrumentation_start();

    /* Start the device policy manager operation. This will initialize the USB-PD block and enable connect detection. */
    Cy_PdStack_Dpm_Start(&gl_PdStackPort0Ctx);
#if PMG1_PD_DUALPORT_ENABLE
    Cy_PdStack_Dpm_Start(&gl_PdStackPort1Ctx);
#endif /* PMG1_PD_DUALPORT_ENABLE */

    /*
     * After the initialization is complete, keep processing the USB-PD device policy manager task in a loop.
     * Since this application does not have any other function, the PMG1 device can be placed in "deep sleep"
     * mode for power saving whenever the PD stack and drivers are idle.
     */
    for (;;)
    {
        /* Handle the device policy tasks for each PD port. */
        Cy_PdStack_Dpm_Task(&gl_PdStackPort0Ctx);
#if PMG1_PD_DUALPORT_ENABLE
        Cy_PdStack_Dpm_Task(&gl_PdStackPort1Ctx);
#endif /* PMG1_PD_DUALPORT_ENABLE */

        /* Perform any application level tasks. */
        app_task(&gl_PdStackPort0Ctx);
#if PMG1_PD_DUALPORT_ENABLE
        app_task(&gl_PdStackPort1Ctx);
#endif /* PMG1_PD_DUALPORT_ENABLE */

        /* Perform tasks associated with instrumentation. */
        instrumentation_task();

#if CY_PD_PPS_SNK_ENABLE
        /* PPS mode */
        if (ppsSetFlag == true)
        {
            /* Start the software timer for PPS */
            if (ppsInitTimerFlag)
            {
                /* Start a timer of 1 seconds for Policy engine to request PPS 5V */
                Cy_PdUtils_SwTimer_Start (&gl_TimerCtx, (void *)&gl_PdStackPort0Ctx, (cy_timer_id_t)PPS_INIT_CONTRACT_TIMER_ID,
                        PPS_INIT_CONTRACT_DELAY, pps_init_contract_callback);

                /* Start a timer to indicate PPS Source using User LED (Blinks - PPS Source) */
                Cy_PdUtils_SwTimer_Start (&gl_TimerCtx, (void *)&gl_PdStackPort0Ctx, (cy_timer_id_t)PPS_LED_TIMER_ID,
                        USER_LED_BLINK_DURATION, led_callback);

                /* Clear the initialFlag */
                ppsInitTimerFlag = false;
            }

            /* Check if switch is pressed */
            if (SwitchPressFlag)
            {
                /* Send Get PPS Status Message to Source */
                Cy_PdStack_Dpm_SendPdCommand(&gl_PdStackPort0Ctx, CY_PDSTACK_DPM_CMD_GET_PPS_STATUS, NULL, false, NULL);

                /* Clear the flag */
                SwitchPressFlag = 0;
            }

            /* Perform PPS task */
            pps_task();
        }
#endif /* CY_PD_PPS_SNK_ENABLE */

        /* Non PPS mode */
        if (ppsSetFlag == false)
        {
            /* Glows the User LED to indicate it is not a PPS source */
            Cy_GPIO_Clr(CYBSP_USER_LED_PORT, CYBSP_USER_LED_PIN);
        }

#if SYS_DEEPSLEEP_ENABLE
        /* If possible, enter deep sleep mode for power saving. */
        system_sleep(&gl_PdStackPort0Ctx, 
#if PMG1_PD_DUALPORT_ENABLE
                &gl_PdStackPort1Ctx
#else
                NULL
#endif /* PMG1_PD_DUALPORT_ENABLE */
                );
#endif /* SYS_DEEPSLEEP_ENABLE */
    }
}

/* [] END OF FILE */