main.c

STR71X系列ARM微控制器原理与实践配套光盘

#include "LED.h"
#include "Key.h"
#include "LCD.h"
#include <ucos_ii.h>

#define STKSIZE 128

OS_STK Stack1[STKSIZE], Stack2[STKSIZE], Stack3[STKSIZE];
OS_STK StackCount[STKSIZE];

void Task1(void *arg)
{
	while(1)
	{
		LED_Set(0, LED_TOGGLE);
		OSTimeDly(128);
	}
}

void Task2(void *arg)
{
	while(1)
	{
		LED_Set(1, LED_TOGGLE);
		OSTimeDly(256);
	}
}

void Task3(void *arg)
{
	while(1)
	{
		LED_Set(2, LED_TOGGLE);
		OSTimeDly(512);
	}
}

void TaskCount(void *arg)
{
	unsigned hh = 0, mm = 0, ss = 0, ms = 0;

	RTC_PrescalerConfig(256);
	RTC_FlagClear(RTC_OWIR);
	RTC_FlagClear(RTC_AIR);
	RTC_FlagClear(RTC_SIR);
	RTC_FlagClear(RTC_GIR);

	EIC_IRQChannelConfig(RTC_IRQChannel, ENABLE);
	EIC_IRQChannelPriorityConfig(RTC_IRQChannel, 1);
	EIC_IRQConfig(ENABLE);

	RTC_ITConfig(RTC_SIT | RTC_GIT, ENABLE);

	OSTimeDly(1);
	OSStatInit();

	OSTaskCreate(Task1, 0, Stack1 + (STKSIZE - 1), 1);
	OSTaskCreate(Task2, 0, Stack2 + (STKSIZE - 1), 2);
	OSTaskCreate(Task3, 0, Stack3 + (STKSIZE - 1), 3);

	LCD_Goto(0, 0);
	LCD_Puts("00:00:00:00");
	LCD_Goto(1, 0);
	LCD_Puts("CPU Usage:");
	while(1)
	{
		OSTimeDly(1);
		if(++ms >= OS_TICKS_PER_SEC)
		{
			ms = 0;
			if(++ss >= 60)
			{
				ss = 0;
				if(++mm >= 60)
				{
					mm = 0;
					++hh;
					LCD_Goto(0, 0);
					LCD_Printf("%02u", hh);
				}
				LCD_Goto(0, 3);
				LCD_Printf("%02u", mm);
			}
			LCD_Goto(0, 6);
			LCD_Printf("%02u", ss);
		}
		LCD_Goto(0, 9);
		LCD_Printf("%02u", ms * 100 / OS_TICKS_PER_SEC);
		LCD_Goto(1, 10);
		LCD_Printf("%3d%%", OSCPUUsage);
	}
}

void __main(void)
{
	#ifdef DEBUG
		debug();
	#endif

	RCCU_Div2Config(ENABLE);						// Enable DIV2
	RCCU_MCLKConfig(RCCU_DEFAULT);					// Configure MCLK = RCLK
	RCCU_FCLKConfig(RCCU_RCLK_8);					// Configure FCLK = RCLK / 8
	RCCU_PCLKConfig(RCCU_RCLK_8);					// Configure PCLK = RCLK / 8
	RCCU_PLL1Config(RCCU_PLL1_Mul_12 , RCCU_Div_2) ;		// Configure the PLL1 ( * 12 , / 2 )
	while(RCCU_FlagStatus(RCCU_PLL1_LOCK) == RESET);// Wait PLL to lock
	RCCU_RCLKSourceConfig(RCCU_PLL1_Output);		// Select PLL1_Output as RCLK clock
	// at this step the CKOUT signal should be equal to 48 Mhz

	EIC_Init();
	LED_Init();
	Key_Init();
	LCD_Init();
	LED_Set(0, LED_ON);
	LED_Set(1, LED_ON);
	LED_Set(2, LED_ON);

	OSInit();

	OSTaskCreate(TaskCount, 0, StackCount + (STKSIZE - 1), 4);

	OSStart();
}