/*************************************************************************//**
 * @file     main.c
 * @version  V1.00
 * $Revision: 1 $
 * $Date: 14/09/15 2:23p $
 * @brief    Read the smartcard ATR from smartcard 0 interface.
 *
 * @note
 * Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include <stdio.h>
#include "Nano100Series.h"
#include "sclib.h"

/**
  * @brief  The interrupt services routine of smartcard port 0
  * @param  None
  * @retval None
  */
void SC0_IRQHandler(void)
{
    // Please don't remove any of the function calls below
    if(SCLIB_CheckCDEvent(0))
        return; // Card insert/remove event occurred, no need to check other event...
    SCLIB_CheckTimeOutEvent(0);
    SCLIB_CheckTxRxEvent(0);
    SCLIB_CheckErrorEvent(0);

    return;
}

void SYS_Init(void)
{
    /*---------------------------------------------------------------------------------------------------------*/
    /* Init System Clock                                                                                       */
    /*---------------------------------------------------------------------------------------------------------*/
    /* Unlock protected registers */
    SYS_UnlockReg();

    /* Enable External XTAL (4~24 MHz) */
    CLK_EnableXtalRC(CLK_PWRCTL_HXT_EN_Msk);

    /* Waiting for 12MHz clock ready */
    CLK_WaitClockReady( CLK_CLKSTATUS_HXT_STB_Msk);

    /* Switch HCLK clock source to HXT */
    CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_HXT,CLK_HCLK_CLK_DIVIDER(1));

    /* Enable IP clock */
    CLK_EnableModuleClock(UART0_MODULE);
    CLK_EnableModuleClock(SC0_MODULE);


    /* Select IP clock source */
    CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART_S_HXT, CLK_UART_CLK_DIVIDER(1));
    CLK_SetModuleClock(SC0_MODULE, CLK_CLKSEL2_SC_S_HXT, CLK_SC0_CLK_DIVIDER(3)); // SC clock is 4MHz

    /* Update System Core Clock */
    /* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
    SystemCoreClockUpdate();


    /*---------------------------------------------------------------------------------------------------------*/
    /* Init I/O Multi-function                                                                                 */
    /*---------------------------------------------------------------------------------------------------------*/
    /* Set GPB multi-function pins for UART0 RXD and TXD */
    SYS->PB_L_MFP &= ~(SYS_PB_L_MFP_PB0_MFP_Msk | SYS_PB_L_MFP_PB1_MFP_Msk);
    SYS->PB_L_MFP |= (SYS_PB_L_MFP_PB1_MFP_UART0_TX | SYS_PB_L_MFP_PB0_MFP_UART0_RX);
    /* Set PA.8 ~ PA.11 and PB.4 for SC0 interface */
    SYS->PA_H_MFP &= ~(SYS_PA_H_MFP_PA8_MFP_Msk |
                       SYS_PA_H_MFP_PA9_MFP_Msk |
                       SYS_PA_H_MFP_PA10_MFP_Msk |
                       SYS_PA_H_MFP_PA11_MFP_Msk);
    SYS->PB_L_MFP &= ~SYS_PB_L_MFP_PB4_MFP_Msk;

    SYS->PA_H_MFP |= (SYS_PA_H_MFP_PA8_MFP_SC0_CLK |
                      SYS_PA_H_MFP_PA9_MFP_SC0_DAT |
                      SYS_PA_H_MFP_PA10_MFP_SC0_PWR |
                      SYS_PA_H_MFP_PA11_MFP_SC0_RST);
    SYS->PB_L_MFP |= SYS_PB_L_MFP_PB4_MFP_SC0_CD;

    /* Lock protected registers */
    SYS_LockReg();
}

int main(void)
{
    SCLIB_CARD_INFO_T s_info;
    int retval, i;

    /* Init System, IP clock and multi-function I/O
       In the end of SYS_Init() will issue SYS_LockReg()
       to lock protected register. If user want to write
       protected register, please issue SYS_UnlockReg()
       to unlock protected register if necessary */
    SYS_Init();

    /* Init UART to 115200-8n1 for print message */
    UART_Open(UART0, 115200);

    printf("\nThis sample code reads ATR from smartcard\n");

    // Open smartcard interface 0. CD pin state low indicates card insert and PWR pin low raise VCC pin to card
    // PA.8  --> SC0 CLK
    // PA.9  <-> SC0 DAT
    // PA.10 --> SC0 PWR
    // PA.11 --> SC0 RST
    // PB.4  <-- SC0 CD
    SC_Open(SC0, SC_PIN_STATE_LOW, SC_PIN_STATE_HIGH);
    NVIC_EnableIRQ(SC0_IRQn);

    // Wait 'til card insert
    while(SC_IsCardInserted(SC0) == FALSE);
    // Activate slot 0
    retval = SCLIB_Activate(0, FALSE);

    if(retval == SCLIB_SUCCESS)
    {
        SCLIB_GetCardInfo(0, &s_info);
        printf("ATR: ");
        for(i = 0; i < s_info.ATR_Len; i++)
            printf("%02x ", s_info.ATR_Buf[i]);
        printf("\n");
    }
    else
        printf("Smartcard activate failed\n");

    while(1);
}

/*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/


