- /**************************************************************************//**
- * [url=home.php?mod=space&uid=288409]@file[/url] main.c
- * [url=home.php?mod=space&uid=895143]@version[/url] V1.00
- * $Date: 14/08/28 10:51a $
- * [url=home.php?mod=space&uid=247401]@brief[/url] Toggle PC.9 to turn on / off the board LED
- *
- * @note
- * Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
- *
- ******************************************************************************/
- #include <stdio.h>
- #include "M451Series.h"
- #define HCLK_CLOCK 72000000
- void SYS_Init(void)
- {
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init System Clock */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Unlock protected registers */
- SYS_UnlockReg();
- /* Enable HIRC clock (Internal RC 22.1184MHz) */
- CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
- /* Wait for HIRC clock ready */
- CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
- /* Select HCLK clock source as HIRC and and HCLK clock divider as 1 */
- CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
- /* Enable HXT clock (external XTAL 12MHz) */
- CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
- /* Wait for HXT clock ready */
- CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
- /* Set core clock as HCLK_CLOCK */
- CLK_SetCoreClock(HCLK_CLOCK);
- /* Update System Core Clock */
- /* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
- SystemCoreClockUpdate();
- /*---------------------------------------------------------------------------------------------------------*/
- /* Init I/O Multi-function */
- /*---------------------------------------------------------------------------------------------------------*/
- /* Set GPD multi-function pins for UART0 RXD and TXD */
- SYS->GPD_MFPL &= ~(SYS_GPD_MFPL_PD6MFP_Msk | SYS_GPD_MFPL_PD1MFP_Msk);
- SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD6MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD);
- /* Lock protected registers */
- SYS_LockReg();
- }
- /*---------------------------------------------------------------------------------------------------------*/
- /* MAIN function */
- /*---------------------------------------------------------------------------------------------------------*/
- int main(void)
- {
- int i=0;
- SYS_Init();
- /* Select SysTick clock source as HXT */
- CLK_SetSysTickClockSrc(CLK_CLKSEL0_STCLKSEL_HXT);
- /*Configure PC.9 as Output mode */
- GPIO_SetMode(PC, BIT9, GPIO_MODE_OUTPUT);
- GPIO_SetMode(PC, BIT10, GPIO_MODE_OUTPUT);
- GPIO_SetMode(PC, BIT11, GPIO_MODE_OUTPUT);
-
- /*PWM_ConfigOutputChannel(PWM0, PWM_CH_0_MASK, 100, 50);
- PWM_Start(PWM0,BIT0);
- */
- while(1)
- {
- /* Configure PC.9 to low */
- PC9 = 1; // PC10 = 0;PC11 = 0;
- /* Delay 200 ms */
- CLK_SysTickDelay( 200-i);
- /* Configure PC.9 to high */
- PC9 = 0;//PC10 = 1; PC11 = 1;
- /* Delay 200 ms */
- CLK_SysTickDelay(i);
- i++;
- if(++i == 200 ) i=0;
- }
- }
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