/**************************************************************************//**
* [url=home.php?mod=space&uid=288409]@file[/url] main.c
* [url=home.php?mod=space&uid=895143]@version[/url] V3.00
* $Revision: 3 $
* $Date: 15/09/02 10:03a $
* [url=home.php?mod=space&uid=247401]@brief[/url] Demonstrate how to set GPIO pin mode and use pin data control RGB LED.
* @note
* Copyright (C) 2019 Nuvoton Technology Corp. All rights reserved.
*
******************************************************************************/
#include "stdio.h"
#include "M451Series.h"
#include "NuEdu-Basic01.h"
#define PLL_CLOCK 72000000
/*---------------------------------------------------------------------------------------------------------*/
/* Global variables */
/*---------------------------------------------------------------------------------------------------------*/
uint32_t LED1_R, LED1_G, LED1_B, Blink,brea=0,LED_cnt=0,brea_cnt=0;
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* 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 PLL_CLOCK from PLL */
CLK_SetCoreClock(PLL_CLOCK);
/* Enable UART module clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Select UART module clock source as HXT and UART module clock divider as 1 */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PD multi-function pins for UART0 RXD(PD.6) and TXD(PD.1) */
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);
}
void UART0_Init()
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART module */
SYS_ResetModule(UART0_RST);
/* Configure UART0 and set UART0 baud rate */
UART_Open(UART0, 115200);
}
void TMR1_IRQHandler(void)
{
uint32_t LED_duty,RLED,BLED,GLED,LED_brea;
if(TIMER_GetIntFlag(TIMER1) == 1) {
/* Clear Timer1 time-out interrupt flag */
TIMER_ClearIntFlag(TIMER1);
LED_cnt++;
LED_duty=LED_cnt%100;
if((brea==1)&&((brea_cnt%2)==0))
LED_brea=100-(LED_cnt/100);
else if(brea==1)
LED_brea=LED_cnt/100;
else
LED_brea=0;
RLED=((int32_t)(LED1_R-LED_duty-LED_brea)>0)?1:0;
BLED=((int32_t)(LED1_B-LED_duty-LED_brea)>0)?1:0;
GLED=((int32_t)(LED1_G-LED_duty-LED_brea)>0)?1:0;
if(LED_cnt>=(Blink*1000)) {
RLED=0;
BLED=0;
GLED=0;
}
//PC->DOUT = (PC->DOUT&(~(BIT9|BIT10|BIT11)))|(RLED<<9)|(GLED<<10)|(BLED<<11);
PC->DOUT = (PC->DOUT|BIT9|BIT10|BIT11)&(~((RLED<<9)|(GLED<<10)|(BLED<<11)));
if(LED_cnt==10000) {
LED_cnt=0;
brea_cnt++;
}
}
}
/*---------------------------------------------------------------------------------------------------------*/
/* Main Function */
/*---------------------------------------------------------------------------------------------------------*/
int32_t main(void)
{
/* 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("LED test\n\r");
GPIO_SetMode(PC, BIT11, GPIO_MODE_OUTPUT); //BLED
GPIO_SetMode(PC, BIT10, GPIO_MODE_OUTPUT); //GLED
GPIO_SetMode(PC, BIT9, GPIO_MODE_OUTPUT); //RLED
/* Enable peripheral clock */
CLK_EnableModuleClock(TMR1_MODULE);
CLK_SetModuleClock(TMR1_MODULE, CLK_CLKSEL1_TMR1SEL_HIRC, 0);
TIMER_Open(TIMER1, TIMER_PERIODIC_MODE, 10000);
TIMER_EnableInt(TIMER1);
/* Enable Timer1 NVIC */
NVIC_EnableIRQ(TMR1_IRQn);
/*setting RGB LED*/
LED1_R=100;
LED1_G=100;
LED1_B=100;
Blink=10;
brea=1;
TIMER_Start(TIMER1);
while(1);
}
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