board.c

Go to the documentation of this file.

/*
 * Copyright 2017 NXP
 * All rights reserved.
 * 
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include "fsl_common.h"
#include "fsl_debug_console.h"
#include "board.h"
#if defined(SDK_I2C_BASED_COMPONENT_USED) && SDK_I2C_BASED_COMPONENT_USED
#include "fsl_lpi2c.h"
#endif /* SDK_I2C_BASED_COMPONENT_USED */
#if defined BOARD_USE_CODEC
#include "fsl_wm8960.h"
#endif
/*******************************************************************************
 * Variables
 ******************************************************************************/
#if defined BOARD_USE_CODEC
codec_config_t boardCodecConfig = {
    .I2C_SendFunc = BOARD_Codec_I2C_Send,
    .I2C_ReceiveFunc = BOARD_Codec_I2C_Receive,
    .op.Init = WM8960_Init,
    .op.Deinit = WM8960_Deinit,
    .op.SetFormat = WM8960_ConfigDataFormat
};
#endif

/*******************************************************************************
 * Code
 ******************************************************************************/
 
/* Get debug console frequency. */
uint32_t BOARD_DebugConsoleSrcFreq(void)
{
    uint32_t freq;

    /* To make it simple, we assume default PLL and divider settings, and the only variable
       from application is use PLL3 source or OSC source */
    if (CLOCK_GetMux(kCLOCK_UartMux) == 0) /* PLL3 div6 80M */
    {
        freq = (CLOCK_GetPllFreq(kCLOCK_PllUsb1) / 6U) / (CLOCK_GetDiv(kCLOCK_UartDiv) + 1U);
    }
    else
    {
        freq = CLOCK_GetOscFreq() / (CLOCK_GetDiv(kCLOCK_UartDiv) + 1U);
    }

    return freq;
} 
 
/* Initialize debug console. */
void BOARD_InitDebugConsole(void)
{
    uint32_t uartClkSrcFreq = BOARD_DebugConsoleSrcFreq();

    DbgConsole_Init(BOARD_DEBUG_UART_BASEADDR, BOARD_DEBUG_UART_BAUDRATE, BOARD_DEBUG_UART_TYPE, uartClkSrcFreq);
}
   
/* MPU configuration. */
void BOARD_ConfigMPU(void)
{
    /* Disable I cache and D cache */
    if (SCB_CCR_IC_Msk == (SCB_CCR_IC_Msk & SCB->CCR)) {
        SCB_DisableICache();
    }
    if (SCB_CCR_DC_Msk == (SCB_CCR_DC_Msk & SCB->CCR)) {
        SCB_DisableDCache();
    }

    /* Disable MPU */
    ARM_MPU_Disable();

    /* Region 0 setting */
    MPU->RBAR = ARM_MPU_RBAR(0, 0xC0000000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_512MB);

    /* Region 1 setting */
    MPU->RBAR = ARM_MPU_RBAR(1, 0x80000000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_1GB);

    /* Region 2 setting */
#if defined(XIP_EXTERNAL_FLASH)
    MPU->RBAR = ARM_MPU_RBAR(2, 0x60000000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_512MB);
#else
    MPU->RBAR = ARM_MPU_RBAR(2, 0x60000000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_512MB);
#endif

    /* Region 3 setting */
    MPU->RBAR = ARM_MPU_RBAR(3, 0x00000000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_1GB);
    
    /* Region 4 setting */
    MPU->RBAR = ARM_MPU_RBAR(4, 0x00000000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_128KB);

    /* Region 5 setting */
    MPU->RBAR = ARM_MPU_RBAR(5, 0x20000000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_128KB);

    /* Region 6 setting */
    MPU->RBAR = ARM_MPU_RBAR(6, 0x20200000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_256KB);

    /* The define sets the cacheable memory to shareable, 
     * this suggestion is referred from chapter 2.2.1 Memory regions, 
     * types and attributes in Cortex-M7 Devices, Generic User Guide */
#if defined(SDRAM_IS_SHAREABLE)
    /* Region 7 setting, set whole SDRAM can be accessed by cache */
    MPU->RBAR = ARM_MPU_RBAR(7, 0x80000000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 1, 1, 1, 0, ARM_MPU_REGION_SIZE_32MB); 
#else
    /* Region 7 setting, set whole SDRAM can be accessed by cache */
    MPU->RBAR = ARM_MPU_RBAR(7, 0x80000000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_32MB);
#endif

    /* Region 8 setting, set last 2MB of SDRAM can't be accessed by cache, glocal variables which are not expected to be accessed by cache can be put here */
    MPU->RBAR = ARM_MPU_RBAR(8, 0x81E00000U);
    MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 1, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_2MB);   

    /* Enable MPU */ 
    ARM_MPU_Enable(MPU_CTRL_PRIVDEFENA_Msk);
                
    /* Enable I cache and D cache */ 
    SCB_EnableDCache();
    SCB_EnableICache();
}

#if defined(SDK_I2C_BASED_COMPONENT_USED) && SDK_I2C_BASED_COMPONENT_USED
void BOARD_LPI2C_Init(LPI2C_Type *base, uint32_t clkSrc_Hz)
{
    lpi2c_master_config_t lpi2cConfig = {0};

    /*
     * lpi2cConfig.debugEnable = false;
     * lpi2cConfig.ignoreAck = false;
     * lpi2cConfig.pinConfig = kLPI2C_2PinOpenDrain;
     * lpi2cConfig.baudRate_Hz = 100000U;
     * lpi2cConfig.busIdleTimeout_ns = 0;
     * lpi2cConfig.pinLowTimeout_ns = 0;
     * lpi2cConfig.sdaGlitchFilterWidth_ns = 0;
     * lpi2cConfig.sclGlitchFilterWidth_ns = 0;
     */
    LPI2C_MasterGetDefaultConfig(&lpi2cConfig);
    LPI2C_MasterInit(base, &lpi2cConfig, clkSrc_Hz);
}

status_t BOARD_LPI2C_Send(LPI2C_Type *base, uint8_t deviceAddress, uint32_t subAddress,
                uint8_t subAddressSize, uint8_t *txBuff, uint8_t txBuffSize)
{
    status_t reVal;

    /* Send master blocking data to slave */
    reVal = LPI2C_MasterStart(base, deviceAddress, kLPI2C_Write);
    if (kStatus_Success == reVal)
    {
        while (LPI2C_MasterGetStatusFlags(base) & kLPI2C_MasterNackDetectFlag)
        {
        } 

        reVal = LPI2C_MasterSend(base, &subAddress, subAddressSize);
        if (reVal != kStatus_Success)
        {
            return reVal;
        }

        reVal = LPI2C_MasterSend(base, txBuff, txBuffSize);
        if (reVal != kStatus_Success)
        {
            return reVal;
        }

        reVal = LPI2C_MasterStop(base);
        if (reVal != kStatus_Success)
        {
            return reVal;
        }
    }

    return reVal;
}

status_t BOARD_LPI2C_Receive(LPI2C_Type *base, uint8_t deviceAddress, uint32_t subAddress,
                uint8_t subAddressSize, uint8_t *rxBuff, uint8_t rxBuffSize)
{
    status_t reVal;

    reVal = LPI2C_MasterStart(base, deviceAddress, kLPI2C_Write);
    if (kStatus_Success == reVal)
    {
        while (LPI2C_MasterGetStatusFlags(base) & kLPI2C_MasterNackDetectFlag)
        {
        }

        reVal = LPI2C_MasterSend(base, &subAddress, subAddressSize);
        if (reVal != kStatus_Success)
        {
            return reVal;
        }

        reVal = LPI2C_MasterRepeatedStart(base, deviceAddress, kLPI2C_Read);
        if (reVal != kStatus_Success)
        {
            return reVal;
        }

        reVal = LPI2C_MasterReceive(base, rxBuff, rxBuffSize);
        if (reVal != kStatus_Success)
        {
            return reVal;
        }

        reVal = LPI2C_MasterStop(base);
        if (reVal != kStatus_Success)
        {
            return reVal;
        }
    }
    return reVal;
}

void BOARD_Accel_I2C_Init(void)
{    
    BOARD_LPI2C_Init(BOARD_ACCEL_I2C_BASEADDR, BOARD_ACCEL_I2C_CLOCK_FREQ);
}

status_t BOARD_Accel_I2C_Send(uint8_t deviceAddress, uint32_t subAddress, uint8_t subaddressSize, uint32_t txBuff)
{
    uint8_t data = (uint8_t)txBuff;

    return BOARD_LPI2C_Send(BOARD_ACCEL_I2C_BASEADDR, deviceAddress, subAddress,
                subaddressSize, &data, 1);
}

status_t BOARD_Accel_I2C_Receive(uint8_t deviceAddress, uint32_t subAddress, uint8_t subaddressSize,
                uint8_t *rxBuff, uint8_t rxBuffSize)
{
    return BOARD_LPI2C_Receive(BOARD_ACCEL_I2C_BASEADDR, deviceAddress, subAddress,
            subaddressSize,  rxBuff, rxBuffSize);
}

void BOARD_Codec_I2C_Init(void)
{
    BOARD_LPI2C_Init(BOARD_CODEC_I2C_BASEADDR, BOARD_CODEC_I2C_CLOCK_FREQ);
}

status_t BOARD_Codec_I2C_Send(
    uint8_t deviceAddress, uint32_t subAddress, uint8_t subAddressSize, const uint8_t *txBuff, uint8_t txBuffSize)
{
    return BOARD_LPI2C_Send(BOARD_CODEC_I2C_BASEADDR, deviceAddress, subAddress, subAddressSize, (uint8_t *)txBuff,
                            txBuffSize);
}

status_t BOARD_Codec_I2C_Receive(
    uint8_t deviceAddress, uint32_t subAddress, uint8_t subAddressSize, uint8_t *rxBuff, uint8_t rxBuffSize)
{
    return BOARD_LPI2C_Receive(BOARD_CODEC_I2C_BASEADDR, deviceAddress, subAddress, subAddressSize, rxBuff,
                               rxBuffSize);
}
#endif /* SDK_I2C_BASED_COMPONENT_USED */