Nano100 smartcard 当uart 使用 7bit通讯

/******************************************************************************

 * [url=home.php?mod=space&uid=288409]@file[/url]     main.c

 * [url=home.php?mod=space&uid=895143]@version[/url]  V1.00

 * $Revision: 4 $

 * $Date: 14/09/11 7:15p $

 * [url=home.php?mod=space&uid=247401]@brief[/url]    Demonstrate Smartcard UART mode by connecting PA.8 and PA.9 pins.

 *

 * @note

 * Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.

*****************************************************************************/

#include <stdio.h>

#include "Nano100Series.h"



uint8_t au8TxBuf[] = "Hello World!";

uint8_t au8RxBuf[13]={0,0,0,0,0,0,0,0,0,0,0,0,0};

uint8_t        au8Rxindex=0;



/**

  * @brief  The interrupt services routine of smartcard port 0

  * @param  None

  * @retval None

  */

void SC0_IRQHandler(void)

{

    // Print SCUART received data to UART port

    // Data length here is short, so we're not care about UART FIFO over flow.

    UART_WRITE(UART0, SCUART_READ(SC0));



    // RDA is the only interrupt enabled in this sample, this status bit

    // automatically cleared after Rx FIFO empty. So no need to clear interrupt

    // status here.



    return;

}



void SC1_IRQHandler(void)

{

    UART_WRITE(UART0, SCUART_READ(SC0));



                au8RxBuf[au8Rxindex]=SCUART_READ(SC1);

                au8Rxindex++;

                if(au8Rxindex>=13)

                {

                                au8Rxindex=0;

                }

}



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);

    CLK_EnableModuleClock(SC1_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(1));

    CLK_SetModuleClock(SC1_MODULE, CLK_CLKSEL2_SC_S_HXT, CLK_SC0_CLK_DIVIDER(1));

    /* 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 and PA.9 pin for SC UART mode */

    SYS->PA_H_MFP &= ~(SYS_PA_H_MFP_PA8_MFP_Msk | SYS_PA_H_MFP_PA9_MFP_Msk);

    SYS->PA_H_MFP |= (SYS_PA_H_MFP_PA8_MFP_SC0_CLK | SYS_PA_H_MFP_PA9_MFP_SC0_DAT);

                SYS->PC_L_MFP &= ~(SYS_PC_L_MFP_PC0_MFP_Msk | SYS_PC_L_MFP_PC1_MFP_Msk);

    SYS->PC_L_MFP |= (SYS_PC_L_MFP_PC0_MFP_SC1_CLK | SYS_PC_L_MFP_PC1_MFP_SC1_DAT);

    /* Lock protected registers */

    SYS_LockReg();

}



int main(void)

{

    /* 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("This sample code demos smartcard interface UART mode\n");

    printf("Please connect SC0 CLK pin(PA.8) with SC0 I/O pin(PA.9)\n");

    printf("Hit any key to continue\n");

//     getchar();



    // Open smartcard interface 0 in UART mode.

    SCUART_Open(SC0, 115200);

          SCUART_Open(SC1, 115200);

    // Enable smartcard receive interrupt

    SCUART_ENABLE_INT(SC0, SC_IER_RDA_IE_Msk);

    NVIC_EnableIRQ(SC0_IRQn);

    SCUART_ENABLE_INT(SC1, SC_IER_RDA_IE_Msk);

    NVIC_EnableIRQ(SC1_IRQn);

    // Write output buffer to smartcard tx FIFO

    SCUART_Write(SC0, au8TxBuf, sizeof(au8TxBuf));







    while(1);

}



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