- /**************************************************************************//**
- * [url=home.php?mod=space&uid=288409]@file[/url] main.c
- * [url=home.php?mod=space&uid=895143]@version[/url] V2.00
- * $Revision: 6 $
- * $Date: 15/04/13 11:46a $
- * [url=home.php?mod=space&uid=247401]@brief[/url] Get the current RTC data/time per tick.
- * @note
- * Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
- ******************************************************************************/
- #include <stdio.h>
- #include "NUC200Series.h"
- #define PLL_CLOCK 50000000
- /*---------------------------------------------------------------------------------------------------------*/
- /* Global Interface Variables Declarations */
- /*---------------------------------------------------------------------------------------------------------*/
- volatile uint32_t g_u32RTCTickINT;
- /**
- * @brief IRQ Handler for RTC Interrupt
- *
- * @param None
- *
- * [url=home.php?mod=space&uid=266161]@return[/url] None
- *
- * [url=home.php?mod=space&uid=1543424]@Details[/url] The RTC_IRQHandler is default IRQ of RTC, declared in startup_NUC200Series.s.
- */
- void RTC_IRQHandler(void)
- {
- /* To check if RTC Tick interrupt occurred */
- if(RTC_GET_TICK_INT_FLAG() == 1)
- {
- /* Clear RTC tick interrupt flag */
- RTC_CLEAR_TICK_INT_FLAG();
- g_u32RTCTickINT++;
- PB8 ^= 1;
- }
- }
- void SYS_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init System Clock */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Enable Internal RC 22.1184MHz clock */
- CLK_EnableXtalRC(CLK_PWRCON_OSC22M_EN_Msk);
- /* Waiting for Internal RC clock ready */
- CLK_WaitClockReady(CLK_CLKSTATUS_OSC22M_STB_Msk);
- /* Switch HCLK clock source to Internal RC and HCLK source divide 1 */
- CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_HIRC, CLK_CLKDIV_HCLK(1));
- /* Enable external XTAL 12MHz clock and 32 kHz XTAL */
- CLK_EnableXtalRC((CLK_PWRCON_XTL12M_EN_Msk | CLK_PWRCON_XTL32K_EN_Msk));
- /* Waiting for clock ready */
- CLK_WaitClockReady((CLK_CLKSTATUS_XTL12M_STB_Msk | CLK_CLKSTATUS_XTL32K_STB_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 */
- CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART_S_HXT, CLK_CLKDIV_UART(1));
-
- /* Enable RTC module clock */
- CLK_EnableModuleClock(RTC_MODULE);
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init I/O Multi-function */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Set PB multi-function pins for UART0 RXD, TXD */
- SYS->GPB_MFP &= ~(SYS_GPB_MFP_PB0_Msk | SYS_GPB_MFP_PB1_Msk);
- SYS->GPB_MFP |= (SYS_GPB_MFP_PB0_UART0_RXD | SYS_GPB_MFP_PB1_UART0_TXD);
- }
- void UART0_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init UART */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Reset UART0 */
- SYS_ResetModule(UART0_RST);
- /* Configure UART0 and set UART0 Baudrate */
- UART_Open(UART0, 115200);
- }
- /*---------------------------------------------------------------------------------------------------------*/
- /* MAIN function */
- /*---------------------------------------------------------------------------------------------------------*/
- int main(void)
- {
- S_RTC_TIME_DATA_T sWriteRTC, sReadRTC;
- uint32_t u32Sec;
- /* 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] %dHz\n", SystemCoreClock);
- printf("+-----------------------------------------+\n");
- printf("| RTC Date/Time and Tick Sample Code |\n");
- printf("+-----------------------------------------+\n\n");
- /* Open RTC and start counting */
- sWriteRTC.u32Year = 2014;
- sWriteRTC.u32Month = 2;
- sWriteRTC.u32Day = 6;
- sWriteRTC.u32DayOfWeek = RTC_THURSDAY;
- sWriteRTC.u32Hour = 15;
- sWriteRTC.u32Minute = 30;
- sWriteRTC.u32Second = 30;
- sWriteRTC.u32TimeScale = RTC_CLOCK_24;
- RTC_Open(&sWriteRTC);
- /* Enable RTC tick interrupt, one RTC tick is 1/4 second */
- NVIC_EnableIRQ(RTC_IRQn);
- RTC_EnableInt(RTC_RIER_TIER_Msk);
- RTC_SetTickPeriod(RTC_TICK_1_4_SEC);
- printf("# Showing RTC Date/Time on UART-0.\n\n");
- printf("Date/Time is: (Use PB.8 to check tick period time is 1/4 second) \n");
- /* Use PB.8 to check tick period time */
- PB->PMD = (PB->PMD & ~0x00030000) | (0x00010000);
- u32Sec = 0;
- g_u32RTCTickINT = 0;
- while(1)
- {
- if(g_u32RTCTickINT == 4)
- {
- g_u32RTCTickINT = 0;
- /* Read current RTC date/time */
- RTC_GetDateAndTime(&sReadRTC);
- printf(" %d/%02d/%02d %02d:%02d:%02d\r",
- sReadRTC.u32Year, sReadRTC.u32Month, sReadRTC.u32Day, sReadRTC.u32Hour, sReadRTC.u32Minute, sReadRTC.u32Second);
- if(u32Sec == sReadRTC.u32Second)
- {
- printf("\nRTC tick period time is incorrect.\n");
- while(1);
- }
- u32Sec = sReadRTC.u32Second;
- }
- }
- }
- /*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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