/******************************************************************************
 * @file     main.c
 * @version  V3.00
 * $Revision: 3 $
 * $Date: 16/10/17 3:05p $
 * @brief    Show how to read/program embedded flash by ISP function.
 * @note
 * @copyright SPDX-License-Identifier: Apache-2.0
 * @copyright Copyright (C) 2016 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include <stdio.h>
#include "M0564.h"

#define PLL_CLOCK           72000000

#define APROM_TEST_BASE             0x3000
#define DATA_FLASH_TEST_BASE        0x5000
#define DATA_FLASH_TEST_END         0x12000

#define TEST_PATTERN                0x5A5A5A5A


void SYS_Init(void)
{
    /*---------------------------------------------------------------------------------------------------------*/
    /* Init System Clock                                                                                       */
    /*---------------------------------------------------------------------------------------------------------*/

    /* Enable HIRC clock (Internal RC 22.1184MHz) */
    CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);

    /* Wait for HIRC clock ready */
    CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);

    /* Select HCLK clock source as HIRC and HCLK source divider as 1 */
    CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));

    /* Set PLL to Power-down mode and PLLSTB bit in CLK_STATUS register will be cleared by hardware.*/
    CLK_DisablePLL();

    /* Enable HXT clock (external XTAL 12MHz) */
    CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);

    /* Wait for HXT clock ready */
    CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);

    /* Set core clock as PLL_CLOCK from PLL */
    CLK_SetCoreClock(PLL_CLOCK);

    /* Enable UART module clock */
    CLK_EnableModuleClock(UART0_MODULE);

    /* Select UART module clock source as HXT and UART module clock divider as 1 */
    CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));

    /*---------------------------------------------------------------------------------------------------------*/
    /* Init I/O Multi-function                                                                                 */
    /*---------------------------------------------------------------------------------------------------------*/
    /* Set PD multi-function pins for UART0 RXD and TXD */
    SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD0MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
    SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
}

void UART_Init()
{
    /*---------------------------------------------------------------------------------------------------------*/
    /* Init UART                                                                                               */
    /*---------------------------------------------------------------------------------------------------------*/
    UART_Open(UART0, 115200);
}

static int  SetDataFlashBase(uint32_t u32DFBA)
{
    uint32_t au32Config[2];

    /* Read current User Configuration */
    FMC_ReadConfig(au32Config, 1);

    /* Just return when Data Flash has been enabled */
    if(!(au32Config[0] & 0x1))
        return 0;

    /* Enable User Configuration Update */
    FMC_EnableConfigUpdate();

    /* Erase User Configuration */
    FMC_Erase(FMC_CONFIG_BASE);

    /* Write User Configuration to Enable Data Flash */
    au32Config[0] &= ~0x1;
    au32Config[1] = u32DFBA;

    if(FMC_WriteConfig(au32Config, 2))
        return -1;

    printf("\nSet Data Flash base as 0x%x.\n", FMC_ReadDataFlashBaseAddr());

    /* Perform chip reset to make new User Config take effect */
    SYS->IPRST0 |= SYS_IPRST0_CHIPRST_Msk;

    return 0;
}

int32_t FillDataPattern(uint32_t u32StartAddr, uint32_t u32EndAddr, uint32_t u32Pattern)
{
    uint32_t u32Addr;

    for(u32Addr = u32StartAddr; u32Addr < u32EndAddr; u32Addr += 4)
    {
        FMC_Write(u32Addr, u32Pattern);
    }
    return 0;
}


int32_t  VerifyData(uint32_t u32StartAddr, uint32_t u32EndAddr, uint32_t u32Pattern)
{
    uint32_t    u32Addr;
    uint32_t    u32Data;

    for(u32Addr = u32StartAddr; u32Addr < u32EndAddr; u32Addr += 4)
    {
        u32Data = FMC_Read(u32Addr);
        if(u32Data != u32Pattern)
        {
            printf("\nFMC_Read data verify failed at address 0x%x, read=0x%x, expect=0x%x\n", u32Addr, u32Data, u32Pattern);
            return -1;
        }
    }
    return 0;
}


int32_t  FlashTest(uint32_t u32StartAddr, uint32_t u32EndAddr, uint32_t u32Pattern)
{
    uint32_t    u32Addr;

    for(u32Addr = u32StartAddr; u32Addr < u32EndAddr; u32Addr += FMC_FLASH_PAGE_SIZE)
    {
        printf("    Flash test address: 0x%x    \r", u32Addr);

        // Erase page
        FMC_Erase(u32Addr);

        // Verify if page contents are all 0xFFFFFFFF
        if(VerifyData(u32Addr, u32Addr + FMC_FLASH_PAGE_SIZE, 0xFFFFFFFF) < 0)
        {
            printf("\nPage 0x%x erase verify failed!\n", u32Addr);
            return -1;
        }

        // Write test pattern to fill the whole page
        if(FillDataPattern(u32Addr, u32Addr + FMC_FLASH_PAGE_SIZE, u32Pattern) < 0)
        {
            printf("Failed to write page 0x%x!\n", u32Addr);
            return -1;
        }

        // Verify if page contents are all equal to test pattern
        if(VerifyData(u32Addr, u32Addr + FMC_FLASH_PAGE_SIZE, u32Pattern) < 0)
        {
            printf("\nData verify failed!\n ");
            return -1;
        }

        FMC_Erase(u32Addr);

        // Verify if page contents are all 0xFFFFFFFF
        if(VerifyData(u32Addr, u32Addr + FMC_FLASH_PAGE_SIZE, 0xFFFFFFFF) < 0)
        {
            printf("\nPage 0x%x erase verify failed!\n", u32Addr);
            return -1;
        }
    }
    printf("\r    Flash Test Passed.          \n");
    return 0;
}

int main()
{
    uint32_t i, u32Data;

    /* Unlock protected registers */
    SYS_UnlockReg();

    SYS_Init();
    UART_Init();

    /*
        This sample code is used to show how to use StdDriver API to implement ISP functions.
    */

    printf("\n\n");
    printf("+----------------------------------------+\n");
    printf("|        FMC ISP Sample Code             |\n");
    printf("+----------------------------------------+\n");

    //SYS_UnlockReg();

    /* Enable FMC ISP function */
    FMC_Open();

    if(SetDataFlashBase(DATA_FLASH_TEST_BASE) < 0)
    {
        printf("Failed to set Data Flash base address!\n");
        goto lexit;
    }

    /* Read BS */
    printf("  Boot Mode ............................. ");
    if(FMC_GetBootSource() == 0)
        printf("[APROM]\n");
    else
    {
        printf("[LDROM]\n");
        printf("  WARNING: The driver sample code must execute in AP mode!\n");
        goto lexit;
    }

    u32Data = FMC_ReadCID();
    printf("  Company ID ............................ [0x%08x]\n", u32Data);

    u32Data = FMC_ReadPID();
    printf("  Product ID ............................ [0x%08x]\n", u32Data);

    for(i = 0; i < 3; i++)
    {
        u32Data = FMC_ReadUID(i);
        printf("  Unique ID %d ........................... [0x%08x]\n", i, u32Data);
    }

    for(i = 0; i < 4; i++)
    {
        u32Data = FMC_ReadUCID(i);
        printf("  Unique Customer ID %d .................. [0x%08x]\n", i, u32Data);
    }

    /* Read User Configuration */
    printf("  User Config 0 ......................... [0x%08x]\n", FMC_Read(FMC_CONFIG_BASE));
    printf("  User Config 1 ......................... [0x%08x]\n", FMC_Read(FMC_CONFIG_BASE + 4));

    /* Read Data Flash base address */
    u32Data = FMC_ReadDataFlashBaseAddr();
    printf("  Data Flash Base Address ............... [0x%08x]\n", u32Data);

    printf("\n\nLDROM test =>\n");
    FMC_EnableLDUpdate();
    if(FlashTest(FMC_LDROM_BASE, FMC_LDROM_BASE + FMC_LDROM_SIZE, TEST_PATTERN) < 0)
    {
        printf("\n\nLDROM test failed!\n");
        goto lexit;
    }
    FMC_DisableLDUpdate();

    printf("\n\nAPROM test =>\n");
    FMC_EnableAPUpdate();
    if(FlashTest(APROM_TEST_BASE, DATA_FLASH_TEST_BASE, TEST_PATTERN) < 0)
    {
        printf("\n\nAPROM test failed!\n");
        goto lexit;
    }
    FMC_DisableAPUpdate();

    printf("\n\nData Flash test =>\n");
    if(FlashTest(DATA_FLASH_TEST_BASE, DATA_FLASH_TEST_END, TEST_PATTERN) < 0)
    {
        printf("\n\nUHB test failed!\n");
        goto lexit;
    }

lexit:

    /* Disable FMC ISP function */
    FMC_Close();

    /* Lock protected registers */
    SYS_LockReg();

    printf("\nFMC Sample Code Completed.\n");

    while(1);
}

/*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/
