NUC029用定时器写延时函数

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

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

 * [url=home.php?mod=space&uid=895143]@version[/url]  V3.00

 * $Revision: 2 $

 * $Date: 16/10/25 4:30p $

 * [url=home.php?mod=space&uid=247401]@brief[/url]    Show how to use timer0 to create various delay time.

 * @note

 * Copyright (C) 2016 Nuvoton Technology Corp. All rights reserved.

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

#include <stdio.h>

#include "NUC029xGE.h"





#define PLL_CLOCK       72000000





void SYS_Init(void)

{

    /*---------------------------------------------------------------------------------------------------------*/

    /* Init System Clock                                                                                       */

    /*---------------------------------------------------------------------------------------------------------*/

    /* Enable HIRC clock */

    CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);



    /* Waiting for HIRC clock ready */

    CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);



    /* Switch HCLK clock source to HIRC */

    CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));



    /* Enable HXT */

    CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);



    /* Waiting for clock ready */

    CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);



    /* Set core clock as PLL_CLOCK from PLL and SysTick source to HCLK/2*/

    CLK_SetCoreClock(PLL_CLOCK);

    CLK_SetSysTickClockSrc(CLK_CLKSEL0_STCLKSEL_HCLK_DIV2);



    /* Enable peripheral clock */

    CLK_EnableModuleClock(UART0_MODULE);

    CLK_EnableModuleClock(TMR0_MODULE);

    CLK_EnableModuleClock(TMR1_MODULE);



    /* Peripheral clock source */

    CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_PLL, CLK_CLKDIV0_UART(1));

    CLK_SetModuleClock(TMR0_MODULE, CLK_CLKSEL1_TMR0SEL_PCLK0, 0);

    CLK_SetModuleClock(TMR1_MODULE, CLK_CLKSEL1_TMR1SEL_HXT, 0);



    /*---------------------------------------------------------------------------------------------------------*/

    /* Init I/O Multi-function                                                                                 */

    /*---------------------------------------------------------------------------------------------------------*/

    /* Set multi-function pins for UART0 RXD and TXD */

    SYS->GPA_MFPL &= ~(SYS_GPA_MFPL_PA2MFP_Msk | SYS_GPA_MFPL_PA3MFP_Msk);

    SYS->GPA_MFPL |= (SYS_GPA_MFPL_PA3MFP_UART0_RXD | SYS_GPA_MFPL_PA2MFP_UART0_TXD);

}



void UART0_Init(void)

{

    /*---------------------------------------------------------------------------------------------------------*/

    /* Init UART                                                                                               */

    /*---------------------------------------------------------------------------------------------------------*/

    /* Reset UART module */

    SYS_ResetModule(UART0_RST);



    /* Configure UART0 and set UART0 Baudrate */

    UART_Open(UART0, 115200);

}



/*---------------------------------------------------------------------------------------------------------*/

/*  MAIN function                                                                                          */

/*---------------------------------------------------------------------------------------------------------*/

int main(void)

{

    volatile uint32_t u32DelayTime;



    /* Unlock protected registers */

    SYS_UnlockReg();



    /* Init System, peripheral clock and multi-function I/O */

    SYS_Init();



    /* Lock protected registers */

    SYS_LockReg();



    /* Init UART0 for printf */

    UART0_Init();



    printf("\n\nCPU [url=home.php?mod=space&uid=72445]@[/url] %d Hz\n", SystemCoreClock);

    printf("+-----------------------------------+\n");

    printf("|    Timer Delay API Sample Code    |\n");

    printf("+-----------------------------------+\n\n");



    printf("# This sample code is using Timer1 to check Timer0 TIMER_Delay API delay time is reasonable or not.\n");

    printf("# Delay time includes 100 ms, 200 ms, 300 ms, 400 ms and 500 ms.\n\n");



    /* Start Timer1 to measure delay period of TIMER_Delay API is reasonable or not */

    TIMER1->CTL = TIMER_PERIODIC_MODE | (12 - 1);

    TIMER_ResetCounter(TIMER1);

    TIMER_Start(TIMER1);



    TIMER_ResetCounter(TIMER1);

    TIMER_Delay(TIMER0, 100000);

    u32DelayTime = TIMER_GetCounter(TIMER1) / 1000;

    printf("    Check DelayTime-1 is %d ms .... ", u32DelayTime);

    if(u32DelayTime == 100)

        printf("PASS.\n");

    else

        printf("FAIL.\n");



    TIMER_ResetCounter(TIMER1);

    TIMER_Delay(TIMER0, 200000);

    u32DelayTime = TIMER_GetCounter(TIMER1) / 1000;

    printf("    Check DelayTime-2 is %d ms .... ", u32DelayTime);

    if(u32DelayTime == 200)

        printf("PASS.\n");

    else

        printf("FAIL.\n");



    TIMER_ResetCounter(TIMER1);

    TIMER_Delay(TIMER0, 300000);

    u32DelayTime = TIMER_GetCounter(TIMER1) / 1000;

    printf("    Check DelayTime-3 is %d ms .... ", u32DelayTime);

    if(u32DelayTime == 300)

        printf("PASS.\n");

    else

        printf("FAIL.\n");



    TIMER_ResetCounter(TIMER1);

    TIMER_Delay(TIMER0, 400000);

    u32DelayTime = TIMER_GetCounter(TIMER1) / 1000;

    printf("    Check DelayTime-4 is %d ms .... ", u32DelayTime);

    if(u32DelayTime == 400)

        printf("PASS.\n");

    else

        printf("FAIL.\n");



    TIMER_ResetCounter(TIMER1);

    TIMER_Delay(TIMER0, 500000);

    u32DelayTime = TIMER_GetCounter(TIMER1) / 1000;

    printf("    Check DelayTime-5 is %d ms .... ", u32DelayTime);

    if(u32DelayTime == 500)

        printf("PASS.\n");

    else

        printf("FAIL.\n");



    printf("\n*** Check TIMER_Delay API delay time done ***\n");



    while(1);

}



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