- /**************************************************************************//**
- * [url=home.php?mod=space&uid=288409]@file[/url] main.c
- * [url=home.php?mod=space&uid=895143]@version[/url] V3.00
- * $Revision: 4 $
- * $Date: 14/01/28 11:45a $
- * [url=home.php?mod=space&uid=247401]@brief[/url] NUC029 Series Timer Driver Sample Code
- *
- * @note
- * Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
- ******************************************************************************/
- #include <stdio.h>
- #include "NUC029xAN.h"
- #define PLLCON_SETTING CLK_PLLCON_50MHz_HXT
- #define PLL_CLOCK 50000000
- /*---------------------------------------------------------------------------------------------------------*/
- /* Global Interface Variables Declarations */
- /*---------------------------------------------------------------------------------------------------------*/
- volatile uint32_t g_au32TMRINTCount[4] = {0};
- /**
- * @brief Timer0 IRQ
- *
- * @param None
- *
- * [url=home.php?mod=space&uid=266161]@return[/url] None
- *
- * [url=home.php?mod=space&uid=1543424]@Details[/url] The Timer0 default IRQ, declared in startup_NUC029xAN.s.
- */
- void TMR0_IRQHandler(void)
- {
- if(TIMER_GetIntFlag(TIMER0) == 1)
- {
- /* Clear Timer0 time-out interrupt flag */
- TIMER_ClearIntFlag(TIMER0);
- g_au32TMRINTCount[0]++;
- }
- }
- /**
- * @brief Timer1 IRQ
- *
- * @param None
- *
- * @return None
- *
- * @details The Timer1 default IRQ, declared in startup_NUC029xAN.s.
- */
- void TMR1_IRQHandler(void)
- {
- if(TIMER_GetIntFlag(TIMER1) == 1)
- {
- /* Clear Timer1 time-out interrupt flag */
- TIMER_ClearIntFlag(TIMER1);
- g_au32TMRINTCount[1]++;
- }
- }
- /**
- * @brief Timer2 IRQ
- *
- * @param None
- *
- * @return None
- *
- * @details The Timer2 default IRQ, declared in startup_NUC029xAN.s.
- */
- void TMR2_IRQHandler(void)
- {
- if(TIMER_GetIntFlag(TIMER2) == 1)
- {
- /* Clear Timer2 time-out interrupt flag */
- TIMER_ClearIntFlag(TIMER2);
- g_au32TMRINTCount[2]++;
- }
- }
- /**
- * @brief Timer3 IRQ
- *
- * @param None
- *
- * @return None
- *
- * @details The Timer3 default IRQ, declared in startup_NUC029xAN.s.
- */
- void TMR3_IRQHandler(void)
- {
- if(TIMER_GetIntFlag(TIMER3) == 1)
- {
- /* Clear Timer3 time-out interrupt flag */
- TIMER_ClearIntFlag(TIMER3);
- g_au32TMRINTCount[3]++;
- }
- }
- void SYS_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init System Clock */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Enable IRC22M clock */
- CLK->PWRCON |= CLK_PWRCON_IRC22M_EN_Msk;
- /* Waiting for IRC22M clock ready */
- CLK_WaitClockReady(CLK_CLKSTATUS_IRC22M_STB_Msk);
- /* Switch HCLK clock source to HIRC */
- CLK->CLKSEL0 = CLK_CLKSEL0_HCLK_S_HIRC;
- /* Set PLL to Power-down mode and PLL_STB bit in CLKSTATUS register will be cleared by hardware.*/
- CLK->PLLCON |= CLK_PLLCON_PD_Msk;
- /* Enable external 12 MHz XTAL, IRC10K */
- CLK->PWRCON |= CLK_PWRCON_XTL12M_EN_Msk | CLK_PWRCON_OSC10K_EN_Msk;
- /* Enable PLL and Set PLL frequency */
- CLK->PLLCON = PLLCON_SETTING;
- /* Waiting for clock ready */
- CLK_WaitClockReady(CLK_CLKSTATUS_PLL_STB_Msk | CLK_CLKSTATUS_XTL12M_STB_Msk | CLK_CLKSTATUS_IRC10K_STB_Msk);
- /* Switch HCLK clock source to PLL, STCLK to HCLK/2 */
- CLK->CLKSEL0 = CLK_CLKSEL0_STCLK_S_HCLK_DIV2 | CLK_CLKSEL0_HCLK_S_PLL;
- /* Enable peripheral clock */
- CLK->APBCLK = CLK_APBCLK_UART0_EN_Msk |
- CLK_APBCLK_TMR0_EN_Msk | CLK_APBCLK_TMR1_EN_Msk | CLK_APBCLK_TMR2_EN_Msk | CLK_APBCLK_TMR3_EN_Msk;
- /* Peripheral clock source */
- CLK->CLKSEL1 = CLK_CLKSEL1_UART_S_PLL |
- CLK_CLKSEL1_TMR0_S_HXT | CLK_CLKSEL1_TMR1_S_HCLK | CLK_CLKSEL1_TMR2_S_HIRC | CLK_CLKSEL1_TMR3_S_HXT;
- /* Update System Core Clock */
- /* User can use SystemCoreClockUpdate() to calculate PllClock, SystemCoreClock and CycylesPerUs automatically. */
- SystemCoreClockUpdate();
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init I/O Multi-function */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Set P3 multi-function pins for UART0 RXD, TXD */
- SYS->P3_MFP = SYS_MFP_P30_RXD0 | SYS_MFP_P31_TXD0;
- }
- void UART0_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init UART */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Reset IP */
- SYS_ResetModule(UART0_RST);
- /* Configure UART0 and set UART0 Baudrate */
- UART_Open(UART0, 115200);
- }
- /*---------------------------------------------------------------------------------------------------------*/
- /* MAIN function */
- /*---------------------------------------------------------------------------------------------------------*/
- int main(void)
- {
- volatile uint32_t u32InitCount;
- /* 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 Periodic and Interrupt Sample Code |\n");
- printf("+------------------------------------------------+\n\n");
- printf("# Timer Settings:\n");
- printf(" Timer0: Clock source 12 MHz; Periodic mode; Enable interrupt; 1 interrupt tick/sec.\n");
- printf(" Timer1: Clock source HCLK(50 MHz); Periodic mode; Enable interrupt; 2 interrupt ticks/sec.\n");
- printf(" Timer2: Clock source HIRC(22 MHz); Periodic mode; Enable interrupt; 4 interrupt ticks/sec.\n");
- printf(" Timer3: Clock source 12 MHz; Periodic mode; Enable interrupt; 8 interrupt ticks/sec.\n");
- printf("# Check Timer0 ~ Timer3 interrupt counts are reasonable or not.\n\n");
- /* Open Timer0 frequency to 0.5 Hz in periodic mode, and enable interrupt */
- TIMER_Open(TIMER0, TIMER_PERIODIC_MODE, 1);
- TIMER_EnableInt(TIMER0);
- /* Open Timer1 frequency to 1 Hz in periodic mode, and enable interrupt */
- TIMER_Open(TIMER1, TIMER_PERIODIC_MODE, 2);
- TIMER_EnableInt(TIMER1);
- /* Open Timer2 frequency to 2 Hz in periodic mode, and enable interrupt */
- TIMER_Open(TIMER2, TIMER_PERIODIC_MODE, 4);
- TIMER_EnableInt(TIMER2);
- /* Open Timer3 frequency to 4 Hz in periodic mode, and enable interrupt */
- TIMER_Open(TIMER3, TIMER_PERIODIC_MODE, 8);
- TIMER_EnableInt(TIMER3);
- /* Enable Timer0 ~ Timer3 NVIC */
- NVIC_EnableIRQ(TMR0_IRQn);
- NVIC_EnableIRQ(TMR1_IRQn);
- NVIC_EnableIRQ(TMR2_IRQn);
- NVIC_EnableIRQ(TMR3_IRQn);
- /* Clear Timer0 ~ Timer3 interrupt counts to 0 */
- g_au32TMRINTCount[0] = g_au32TMRINTCount[1] = g_au32TMRINTCount[2] = g_au32TMRINTCount[3] = 0;
- u32InitCount = g_au32TMRINTCount[0];
- /* Start Timer0 ~ Timer3 counting */
- TIMER_Start(TIMER0);
- TIMER_Start(TIMER1);
- TIMER_Start(TIMER2);
- TIMER_Start(TIMER3);
- /* Check Timer0 ~ Timer3 interrupt counts */
- printf("# Timer interrupt counts :\n");
- while(u32InitCount < 20)
- {
- if(g_au32TMRINTCount[0] != u32InitCount)
- {
- printf("TMR0:%3d TMR1:%3d TMR2:%3d TMR3:%3d\n",
- g_au32TMRINTCount[0], g_au32TMRINTCount[1], g_au32TMRINTCount[2], g_au32TMRINTCount[3]);
- u32InitCount = g_au32TMRINTCount[0];
- }
- }
- printf("*** PASS ***\n");
- while(1);
- }
- /*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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