- /**************************************************************************//**
- * [url=home.php?mod=space&uid=288409]@file[/url] main.c
- * [url=home.php?mod=space&uid=895143]@version[/url] V3.00
- * $Revision: 6 $
- * $Date: 15/09/02 10:04a $
- * [url=home.php?mod=space&uid=247401]@brief[/url] Get the current RTC data/time per tick.
- * @note
- * Copyright (C) 2013~2015 Nuvoton Technology Corp. All rights reserved.
- ******************************************************************************/
- #include <stdio.h>
- #include "M451Series.h"
- #define PLL_CLOCK 72000000
- /*---------------------------------------------------------------------------------------------------------*/
- /* 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_M451Series.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 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 and LXT-32KHz */
- CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk | CLK_PWRCTL_LXTEN_Msk);
- /* Waiting for clock ready */
- CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk | CLK_STATUS_LXTSTB_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(RTC_MODULE);
- /* Peripheral clock source */
- CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_PLL, CLK_CLKDIV0_UART(1));
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init I/O Multi-function */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Set PD multi-function pins for UART0 RXD, TXD */
- SYS->GPD_MFPL = SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_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)
- {
- S_RTC_TIME_DATA_T sWriteRTC, sReadRTC;
- uint32_t u32Sec;
- uint8_t u8IsNewDateTime = 0;
- /* 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");
- /* Enable RTC NVIC */
- NVIC_EnableIRQ(RTC_IRQn);
- /* Open RTC and start counting */
- sWriteRTC.u32Year = 2014;
- sWriteRTC.u32Month = 5;
- sWriteRTC.u32Day = 15;
- 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 */
- RTC_EnableInt(RTC_INTEN_TICKIEN_Msk);
- RTC_SetTickPeriod(RTC_TICK_1_4_SEC);
- printf("# Showing RTC date/time on UART0.\n\n");
- printf("1.) Use PB.8 to check tick period time is 1/4 second or not.\n");
- printf("2.) Show RTC date/time and change date/time after 5 seconds:\n");
- /* Use PB.8 to check tick period time */
- PB->MODE = (PB->MODE & ~GPIO_MODE_MODE8_Msk) | (GPIO_MODE_OUTPUT << GPIO_MODE_MODE8_Pos);
- u32Sec = 0;
- g_u32RTCTickINT = 0;
- while(1)
- {
- if(g_u32RTCTickINT == 4)
- {
- g_u32RTCTickINT = 0;
- /* Read current RTC date/time */
- RTC_GetDateAndTime(&sReadRTC);
- if(u8IsNewDateTime == 0)
- {
- printf(" %d/%02d/%02d %02d:%02d:%02d\n",
- sReadRTC.u32Year, sReadRTC.u32Month, sReadRTC.u32Day, sReadRTC.u32Hour, sReadRTC.u32Minute, sReadRTC.u32Second);
- }
- else
- {
- 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;
- if(u8IsNewDateTime == 0)
- {
- if(u32Sec == (sWriteRTC.u32Second + 5))
- {
- printf("\n");
- printf("3.) Update new date/time to 2014/05/18 11:12:13.\n");
- u8IsNewDateTime = 1;
- RTC_SetDate(2014, 5, 18, RTC_SUNDAY);
- RTC_SetTime(11, 12, 13, RTC_CLOCK_24, RTC_AM);
- }
- }
- }
- }
- }
- /*** (C) COPYRIGHT 2013~2015 Nuvoton Technology Corp. ***/
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