mma9553_demo.c

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/*
 * Copyright (c) 2016, Freescale Semiconductor, Inc.
 * Copyright 2016-2017 NXP
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

/**
 * @file mma9553_demo.c
 *  @brief The mma9553_demo.c file implements the ISSDK MMA9553L sensor driver
 *          example demonstration as a Accelerometer in I2C Mode.
 */

/*  SDK Includes */
#include "board.h"
#include "pin_mux.h"
#include "fsl_lptmr.h"
#include "clock_config.h"

/* CMSIS Includes */
#include "Driver_I2C.h"

/* ISSDK Includes */
#include "issdk_hal.h"
#include "gpio_driver.h"
#include "mma9553_drv.h"
#include "host_io_uart.h"
#include "systick_utils.h"
#include "auto_detection_service.h"

/*******************************************************************************
 * Macros
 ******************************************************************************/
#define SAMPLING_RATE_ms (100)                /* Timeout for the ODR Timer. */
#define MMA9553_ACCEL_DATA_SIZE (6)           /* 2 byte X,Y,Z Axis Data each. */
#define mma9553_en_callback LPTMR0_IRQHandler /* Timer timeout Callback. */

#define MMA9553_STREAM_DATA_SIZE (10)

/*! @brief Unique Name for this application which should match the target GUI pkg name. */
#define APPLICATION_NAME "MMA9553 Pedometer Demo"
/*! @brief Version to distinguish between instances the same application based on target Shield and updates. */
#define APPLICATION_VERSION "2.5"

/*******************************************************************************
 * Constants
 ******************************************************************************/
/*! Prepare the register write list to configure MMA9553L in 30Hz Mode. */
const registercommandlist_t cMma9553Config30Hz[] = {
    {SetFSRange_2g, 0, sizeof(SetFSRange_2g)},                     /* Set FS Range 2G */
    {SetSampleRate_30Hz, 0, sizeof(SetSampleRate_30Hz)},           /* Set Sensor Sampling Rate 30Hz */
    {SetAFEPriority_for30Hz, 0, sizeof(SetAFEPriority_for30Hz)},   /* Set AFE Priority for 30Hz Sampling Rate */
    {SetMBoxPriority_for30Hz, 0, sizeof(SetMBoxPriority_for30Hz)}, /* Set MBox Priority for 30Hz Sampling Rate */
    __END_WRITE_CMD__};

/*! Prepare the register read list to read the raw Accel data from MMA9553. */
const registerreadlist_t cMma9553ReadRawOutput[] = {
    {.readFrom = MMA9553_XYZ_DATA_OFFSET, .numBytes = MMA9553_ACCEL_DATA_SIZE}, __END_READ_DATA__};

/*******************************************************************************
 * Globals
 ******************************************************************************/
char boardString[ADS_MAX_STRING_LENGTH] = {0}, shieldString[ADS_MAX_STRING_LENGTH] = {0},
     embAppName[ADS_MAX_STRING_LENGTH] = {0};
volatile bool bStreamingEnabled = false, bMma9553DataReady = false, bMma9553Ready = false;
uint8_t gStreamID; /* The auto assigned Stream ID. */
int32_t gSystick;
GENERIC_DRIVER_GPIO *pGpioDriver = &Driver_GPIO_KSDK;

/*******************************************************************************
 * Functions
 ******************************************************************************/
/* LPTMR based ODR Callback function. */
void mma9553_en_callback(void)
{
    LPTMR_ClearStatusFlags(LPTMR0, kLPTMR_TimerCompareFlag);
    bMma9553DataReady = true;
}

/* Handler for Device Info and Streaming Control Commands. */
bool process_host_command(
    uint8_t tag, uint8_t *hostCommand, uint8_t *hostResponse, size_t *hostMsgSize, size_t respBufferSize)
{
    bool success = false;

    /* If it is Host requesting Device Info, send Board Name and Shield Name. */
    if (tag == HOST_PRO_INT_DEV_TAG)
    { /* Byte 1     : Payload - Length of APPLICATION_NAME (b)
       * Bytes=b    : Payload Application Name
       * Byte b+1   : Payload - Length of BOARD_NAME (s)
       * Bytes=s    : Payload Board Name
       * Byte b+s+2 : Payload - Length of SHIELD_NAME (v)
       * Bytes=v    : Payload Shield Name */

        size_t appNameLen = strlen(embAppName);
        size_t boardNameLen = strlen(boardString);
        size_t shieldNameLen = strlen(shieldString);

        if (respBufferSize >= boardNameLen + shieldNameLen + appNameLen + 3)
        { /* We have sufficient buffer. */
            *hostMsgSize = 0;
        }
        else
        {
            return false;
        }

        hostResponse[*hostMsgSize] = appNameLen;
        *hostMsgSize += 1;

        memcpy(hostResponse + *hostMsgSize, embAppName, appNameLen);
        *hostMsgSize += appNameLen;

        hostResponse[*hostMsgSize] = boardNameLen;
        *hostMsgSize += 1;

        memcpy(hostResponse + *hostMsgSize, boardString, boardNameLen);
        *hostMsgSize += boardNameLen;

        hostResponse[*hostMsgSize] = shieldNameLen;
        *hostMsgSize += 1;

        memcpy(hostResponse + *hostMsgSize, shieldString, shieldNameLen);
        *hostMsgSize += shieldNameLen;

        return true;
    }

    /* If it is Host sending Streaming Commands, take necessary actions. */
    if ((tag == (HOST_PRO_INT_CMD_TAG | HOST_PRO_CMD_W_CFG_TAG)) &&
        (*hostMsgSize == HOST_MSG_CMD_ACT_OFFSET - HOST_MSG_LEN_LSB_OFFSET))
    {                           /* Byte 1 : Payload - Operation Code (Start/Stop Operation Code)
                                 * Byte 2 : Payload - Stream ID (Target Stream for carrying out operation) */
        switch (hostCommand[0]) /* Execute desired operation (Start/Stop) on the requested Stream. */
        {
            case HOST_CMD_START:
                if (hostCommand[1] == gStreamID && bMma9553Ready && bStreamingEnabled == false)
                {
                    BOARD_SystickStart(&gSystick);
                    bStreamingEnabled = true;
                    success = true;
                }
                break;
            case HOST_CMD_STOP:
                if (hostCommand[1] == gStreamID && bMma9553Ready && bStreamingEnabled == true)
                {
                    pGpioDriver->clr_pin(&GREEN_LED);
                    bStreamingEnabled = false;
                    success = true;
                }
                break;
            default:
                break;
        }
        *hostMsgSize = 0; /* Zero payload in response. */
    }

    return success;
}

/*!
 * @brief Main function
 */
int main(void)
{
    int32_t status;
    uint8_t streamingPacket[STREAMING_HEADER_LEN + MMA9553_STREAM_DATA_SIZE];

    lptmr_config_t lptmrConfig;
    mma9553_i2c_sensorhandle_t mma9553Driver;
    mma9553_acceldata_t rawData = {.timestamp = 0};

    ARM_DRIVER_I2C *pI2Cdriver = &I2C_S_DRIVER;
    ARM_DRIVER_USART *pUartDriver = &HOST_S_DRIVER;

    /*! Initialize the MCU hardware */
    BOARD_BootClockRUN();
    BOARD_SystickEnable();

    /* Create the Short Application Name String for ADS. */
    sprintf(embAppName, "%s:%s", APPLICATION_NAME, APPLICATION_VERSION);

    /* Run ADS. */
    BOARD_RunADS(embAppName, boardString, shieldString, ADS_MAX_STRING_LENGTH);

    /* Create the Full Application Name String for Device Info Response. */
    sprintf(embAppName, "%s:%s:%s", SHIELD_NAME, APPLICATION_NAME, APPLICATION_VERSION);

    /*! Initialize RGB LED pin used by FRDM board */
    pGpioDriver->pin_init(&GREEN_LED, GPIO_DIRECTION_OUT, NULL, NULL, NULL);

    /* Initialize ODR Timer. */
    LPTMR_GetDefaultConfig(&lptmrConfig);
    LPTMR_Init(LPTMR0, &lptmrConfig);
    LPTMR_EnableInterrupts(LPTMR0, kLPTMR_TimerInterruptEnable);
    LPTMR_SetTimerPeriod(LPTMR0, MSEC_TO_COUNT(SAMPLING_RATE_ms, CLOCK_GetFreq(kCLOCK_LpoClk)));
    EnableIRQ(LPTMR0_IRQn);

    /*! Initialize the I2C driver. */
    status = pI2Cdriver->Initialize(I2C_S_SIGNAL_EVENT);
    if (ARM_DRIVER_OK != status)
    {
        return -1;
    }

    /*! Set the I2C Power mode. */
    status = pI2Cdriver->PowerControl(ARM_POWER_FULL);
    if (ARM_DRIVER_OK != status)
    {
        return -1;
    }

    /*! Set the I2C bus speed. */
    status = pI2Cdriver->Control(ARM_I2C_BUS_SPEED, ARM_I2C_BUS_SPEED_FAST);
    if (ARM_DRIVER_OK != status)
    {
        return -1;
    }

    /*! Initialize the UART driver. */
    status = pUartDriver->Initialize(HOST_S_SIGNAL_EVENT);
    if (ARM_DRIVER_OK != status)
    {
        return -1;
    }

    /*! Set the UART Power mode. */
    status = pUartDriver->PowerControl(ARM_POWER_FULL);
    if (ARM_DRIVER_OK != status)
    {
        return -1;
    }

    /*! Set UART Baud Rate. */
    status = pUartDriver->Control(ARM_USART_MODE_ASYNCHRONOUS, BOARD_DEBUG_UART_BAUDRATE);
    if (ARM_DRIVER_OK != status)
    {
        return -1;
    }

    /*! Initialize the MMA9553 sensor driver. */
    status = MMA9553_I2C_Initialize(&mma9553Driver, &I2C_S_DRIVER, I2C_S_DEVICE_INDEX, MMA9553_I2C_ADDR);
    if (SENSOR_ERROR_NONE == status)
    {
        /*!  Set the task to be executed while waiting for I2C transactions to complete. */
        MMA9553_I2C_SetIdleTask(&mma9553Driver, (registeridlefunction_t)SMC_SetPowerModeVlpr, SMC);

        /*! Configure the MMA9553 sensor driver with 30Hz Mode settings. */
        status = MMA9553_I2C_Configure(&mma9553Driver, cMma9553Config30Hz);
        if (SENSOR_ERROR_NONE == status)
        {
            bMma9553Ready = true;
        }
    }

    /*! Initialize streaming and assign a Stream ID. */
    gStreamID =
        Host_IO_Init(pUartDriver, (void *)mma9553Driver.pCommDrv, &mma9553Driver.deviceInfo, NULL, MMA9553_I2C_ADDR);
    /* Confirm if a valid Stream ID has been allocated for this stream. */
    if (0 == gStreamID)
    {
        bMma9553Ready = false;
    }
    else
    {
        /*! Populate streaming header. */
        Host_IO_Add_ISO_Header(gStreamID, streamingPacket, MMA9553_STREAM_DATA_SIZE);
        pGpioDriver->clr_pin(&GREEN_LED);
    }

    LPTMR_StartTimer(LPTMR0);
    for (;;) /* Forever loop */
    {        /* Call UART Non-Blocking Receive. */
        Host_IO_Receive(process_host_command, HOST_FORMAT_HDLC);

        /* Process packets only if streaming has been enabled by Host and ODR Timer ISR has expired. */
        if (false == bStreamingEnabled || false == bMma9553DataReady)
        {
            SMC_SetPowerModeWait(SMC); /* Power save, wait if nothing to do. */
            continue;
        }
        else
        { /*! Clear the data ready flag, it will be set again by the ISR. */
            bMma9553DataReady = false;
            pGpioDriver->toggle_pin(&GREEN_LED);
        }

        /*! Read the raw sensor data from the MMA9553. */
        status = MMA9553_I2C_CommandResponse(&mma9553Driver, NULL, cMma9553ReadRawOutput, (uint8_t *)&rawData.accel);
        if (ARM_DRIVER_OK != status)
        {
            continue;
        }

        /* Update timestamp from Systick framework. */
        rawData.timestamp += BOARD_SystickElapsedTime_us(&gSystick);

        /* Copy Raw samples to Streaming Buffer. */
        memcpy(streamingPacket + STREAMING_HEADER_LEN, &rawData, MMA9553_STREAM_DATA_SIZE);
        /* Send streaming packet to Host. */
        Host_IO_Send(streamingPacket, sizeof(streamingPacket), HOST_FORMAT_HDLC);
    }
}